web开发过程中经常用到的一些公共方法及操作
1、JSON转换操作
包含List转换成Json的默认格式；List转换成Json处定义格式；对象转换为Json；对象集合转换Json；普通集合转换Json；DataSet转换为Json；Datatable转换为Json；DataReader转换为Json
#region 私有方法 /// <summary> /// 过滤特殊字符 /// </summary> private static string String2Json(String s) { StringBuilder sb = new StringBuilder(); for (int i = 0; i < s.Length; i++) { char c = s.ToCharArray()[i]; switch (c) { case '\"': sb.Append("\\\""); break; case '\\': sb.Append("\\\\"); break; case '/': sb.Append("\\/"); break; case '\b': sb.Append("\\b"); break; case '\f': sb.Append("\\f"); break; case '\n': sb.Append("\\n"); break; case '\r': sb.Append("\\r"); break; case '\t': sb.Append("\\t"); break; default: sb.Append(c); break; } } return sb.ToString(); } /// <summary> /// 格式化字符型、日期型、布尔型 /// </summary> private static string StringFormat(string str, Type type) { if (type == typeof(string)) { str = String2Json(str); str = "\"" + str + "\""; } else if (type == typeof(DateTime)) { str = "\"" + str + "\""; } else if (type == typeof(bool)) { str = str.ToLower(); } else if (type != typeof(string) && string.IsNullOrEmpty(str)) { str = "\"" + str + "\""; } return str; } #endregion #region List转换成Json /// <summary> /// List转换成Json /// </summary> public static string ListToJson<T>(IList<T> list) { object obj = list[0]; return ListToJson<T>(list, obj.GetType().Name); } /// <summary> /// List转换成Json /// </summary> public static string ListToJson<T>(IList<T> list, string jsonName) { StringBuilder Json = new StringBuilder(); if (string.IsNullOrEmpty(jsonName)) jsonName = list[0].GetType().Name; Json.Append("{\"" + jsonName + "\":["); if (list.Count > 0) { for (int i = 0; i < list.Count; i++) { T obj = Activator.CreateInstance<T>(); PropertyInfo[] pi = obj.GetType().GetProperties(); Json.Append("{"); for (int j = 0; j < pi.Length; j++) { Type type = pi[j].GetValue(list[i], null).GetType(); Json.Append("\"" + pi[j].Name.ToString() + "\":" + StringFormat(pi[j].GetValue(list[i], null).ToString(), type)); if (j < pi.Length - 1) { Json.Append(","); } } Json.Append("}"); if (i < list.Count - 1) { Json.Append(","); } } } Json.Append("]}"); return Json.ToString(); } #endregion #region 对象转换为Json /// <summary> /// 对象转换为Json /// </summary> /// <param name="jsonObject">对象</param> /// <returns>Json字符串</returns> public static string ToJson(object jsonObject) { string jsonString = "{"; PropertyInfo[] propertyInfo = jsonObject.GetType().GetProperties(); for (int i = 0; i < propertyInfo.Length; i++) { object objectValue = propertyInfo[i].GetGetMethod().Invoke(jsonObject, null); string value = string.Empty; if (objectValue is DateTime || objectValue is Guid || objectValue is TimeSpan) { value = "'" + objectValue.ToString() + "'"; } else if (objectValue is string) { value = "'" + ToJson(objectValue.ToString()) + "'"; } else if (objectValue is IEnumerable) { value = ToJson((IEnumerable)objectValue); } else { value = ToJson(objectValue.ToString()); } jsonString += "\"" + ToJson(propertyInfo[i].Name) + "\":" + value + ","; } jsonString.Remove(jsonString.Length - 1, jsonString.Length); return jsonString + "}"; } #endregion #region 对象集合转换Json /// <summary> /// 对象集合转换Json /// </summary> /// <param name="array">集合对象</param> /// <returns>Json字符串</returns> public static string ToJson(IEnumerable array) { string jsonString = "["; foreach (object item in array) { jsonString += ToJson(item) + ","; } jsonString.Remove(jsonString.Length - 1, jsonString.Length); return jsonString + "]"; } #endregion #region 普通集合转换Json /// <summary> /// 普通集合转换Json /// </summary> /// <param name="array">集合对象</param> /// <returns>Json字符串</returns> public static string ToArrayString(IEnumerable array) { string jsonString = "["; foreach (object item in array) { jsonString = ToJson(item.ToString()) + ","; } jsonString.Remove(jsonString.Length - 1, jsonString.Length); return jsonString + "]"; } #endregion #region DataSet转换为Json /// <summary> /// DataSet转换为Json /// </summary> /// <param name="dataSet">DataSet对象</param> /// <returns>Json字符串</returns> public static string ToJson(DataSet dataSet) { string jsonString = "{"; foreach (DataTable table in dataSet.Tables) { jsonString += "\"" + table.TableName + "\":" + ToJson(table) + ","; } jsonString = jsonString.TrimEnd(','); return jsonString + "}"; } #endregion #region Datatable转换为Json /// <summary> /// Datatable转换为Json /// </summary> /// <param name="table">Datatable对象</param> /// <returns>Json字符串</returns> public static string ToJson(DataTable dt) { StringBuilder jsonString = new StringBuilder(); jsonString.Append("["); DataRowCollection drc = dt.Rows; for (int i = 0; i < drc.Count; i++) { jsonString.Append("{"); for (int j = 0; j < dt.Columns.Count; j++) { string strKey = dt.Columns[j].ColumnName; string strValue = drc[i][j].ToString(); Type type = dt.Columns[j].DataType; jsonString.Append("\"" + strKey + "\":"); strValue = StringFormat(strValue, type); if (j < dt.Columns.Count - 1) { jsonString.Append(strValue + ","); } else { jsonString.Append(strValue); } } jsonString.Append("},"); } jsonString.Remove(jsonString.Length - 1, 1); jsonString.Append("]"); return jsonString.ToString(); } /// <summary> /// DataTable转换为Json /// </summary> public static string ToJson(DataTable dt, string jsonName) { StringBuilder Json = new StringBuilder(); if (string.IsNullOrEmpty(jsonName)) jsonName = dt.TableName; Json.Append("{\"" + jsonName + "\":["); if (dt.Rows.Count > 0) { for (int i = 0; i < dt.Rows.Count; i++) { Json.Append("{"); for (int j = 0; j < dt.Columns.Count; j++) { Type type = dt.Rows[i][j].GetType(); Json.Append("\"" + dt.Columns[j].ColumnName.ToString() + "\":" + StringFormat(dt.Rows[i][j].ToString(), type)); if (j < dt.Columns.Count - 1) { Json.Append(","); } } Json.Append("}"); if (i < dt.Rows.Count - 1) { Json.Append(","); } } } Json.Append("]}"); return Json.ToString(); } #endregion #region DataReader转换为Json /// <summary> /// DataReader转换为Json /// </summary> /// <param name="dataReader">DataReader对象</param> /// <returns>Json字符串</returns> public static string ToJson(DbDataReader dataReader) { StringBuilder jsonString = new StringBuilder(); jsonString.Append("["); while (dataReader.Read()) { jsonString.Append("{"); for (int i = 0; i < dataReader.FieldCount; i++) { Type type = dataReader.GetFieldType(i); string strKey = dataReader.GetName(i); string strValue = dataReader[i].ToString(); jsonString.Append("\"" + strKey + "\":"); strValue = StringFormat(strValue, type); if (i < dataReader.FieldCount - 1) { jsonString.Append(strValue + ","); } else { jsonString.Append(strValue); } } jsonString.Append("},"); } dataReader.Close(); jsonString.Remove(jsonString.Length - 1, 1); jsonString.Append("]"); return jsonString.ToString(); } #endregion
2、XML操作类
/// <summary> /// Xml的操作公共类 /// </summary> public class XmlHelper { #region 字段定义 /// <summary> /// XML文件的物理路径 /// </summary> private string _filePath = string.Empty; /// <summary> /// Xml文档 /// </summary> private XmlDocument _xml; /// <summary> /// XML的根节点 /// </summary> private XmlElement _element; #endregion #region 构造方法 /// <summary> /// 实例化XmlHelper对象 /// </summary> /// <param name="xmlFilePath">Xml文件的相对路径</param> public XmlHelper(string xmlFilePath) { //获取XML文件的绝对路径 _filePath = SysHelper.GetPath(xmlFilePath); } #endregion #region 创建XML的根节点 /// <summary> /// 创建XML的根节点 /// </summary> private void CreateXMLElement() { //创建一个XML对象 _xml = new XmlDocument(); if (DirFile.IsExistFile(_filePath)) { //加载XML文件 _xml.Load(this._filePath); } //为XML的根节点赋值 _element = _xml.DocumentElement; } #endregion #region 获取指定XPath表达式的节点对象 /// <summary> /// 获取指定XPath表达式的节点对象 /// </summary> /// <param name="xPath">XPath表达式, /// 范例1: @"Skill/First/SkillItem", 等效于 @"//Skill/First/SkillItem" /// 范例2: @"Table[USERNAME='a']" , []表示筛选,USERNAME是Table下的一个子节点. /// 范例3: @"ApplyPost/Item[@itemName='岗位编号']",@itemName是Item节点的属性. /// </param> public XmlNode GetNode(string xPath) { //创建XML的根节点 CreateXMLElement(); //返回XPath节点 return _element.SelectSingleNode(xPath); } #endregion #region 获取指定XPath表达式节点的值 /// <summary> /// 获取指定XPath表达式节点的值 /// </summary> /// <param name="xPath">XPath表达式, /// 范例1: @"Skill/First/SkillItem", 等效于 @"//Skill/First/SkillItem" /// 范例2: @"Table[USERNAME='a']" , []表示筛选,USERNAME是Table下的一个子节点. /// 范例3: @"ApplyPost/Item[@itemName='岗位编号']",@itemName是Item节点的属性. /// </param> public string GetValue(string xPath) { //创建XML的根节点 CreateXMLElement(); //返回XPath节点的值 return _element.SelectSingleNode(xPath).InnerText; } #endregion #region 获取指定XPath表达式节点的属性值 /// <summary> /// 获取指定XPath表达式节点的属性值 /// </summary> /// <param name="xPath">XPath表达式, /// 范例1: @"Skill/First/SkillItem", 等效于 @"//Skill/First/SkillItem" /// 范例2: @"Table[USERNAME='a']" , []表示筛选,USERNAME是Table下的一个子节点. /// 范例3: @"ApplyPost/Item[@itemName='岗位编号']",@itemName是Item节点的属性. /// </param> /// <param name="attributeName">属性名</param> public string GetAttributeValue(string xPath, string attributeName) { //创建XML的根节点 CreateXMLElement(); //返回XPath节点的属性值 return _element.SelectSingleNode(xPath).Attributes[attributeName].Value; } #endregion #region 新增节点 /// <summary> /// 1. 功能：新增节点。 /// 2. 使用条件：将任意节点插入到当前Xml文件中。 /// </summary> /// <param name="xmlNode">要插入的Xml节点</param> public void AppendNode(XmlNode xmlNode) { //创建XML的根节点 CreateXMLElement(); //导入节点 XmlNode node = _xml.ImportNode(xmlNode, true); //将节点插入到根节点下 _element.AppendChild(node); } /// <summary> /// 1. 功能：新增节点。 /// 2. 使用条件：将DataSet中的第一条记录插入Xml文件中。 /// </summary> /// <param name="ds">DataSet的实例，该DataSet中应该只有一条记录</param> public void AppendNode(DataSet ds) { //创建XmlDataDocument对象 XmlDataDocument xmlDataDocument = new XmlDataDocument(ds); //导入节点 XmlNode node = xmlDataDocument.DocumentElement.FirstChild; //将节点插入到根节点下 AppendNode(node); } #endregion #region 删除节点 /// <summary> /// 删除指定XPath表达式的节点 /// </summary> /// <param name="xPath">XPath表达式, /// 范例1: @"Skill/First/SkillItem", 等效于 @"//Skill/First/SkillItem" /// 范例2: @"Table[USERNAME='a']" , []表示筛选,USERNAME是Table下的一个子节点. /// 范例3: @"ApplyPost/Item[@itemName='岗位编号']",@itemName是Item节点的属性. /// </param> public void RemoveNode(string xPath) { //创建XML的根节点 CreateXMLElement(); //获取要删除的节点 XmlNode node = _xml.SelectSingleNode(xPath); //删除节点 _element.RemoveChild(node); } #endregion //删除节点 #region 保存XML文件 /// <summary> /// 保存XML文件 /// </summary> public void Save() { //创建XML的根节点 CreateXMLElement(); //保存XML文件 _xml.Save(this._filePath); } #endregion //保存XML文件 #region 静态方法 #region 创建根节点对象 /// <summary> /// 创建根节点对象 /// </summary> /// <param name="xmlFilePath">Xml文件的相对路径</param> private static XmlElement CreateRootElement(string xmlFilePath) { //定义变量，表示XML文件的绝对路径 string filePath = ""; //获取XML文件的绝对路径 filePath = SysHelper.GetPath(xmlFilePath); //创建XmlDocument对象 XmlDocument xmlDocument = new XmlDocument(); //加载XML文件 xmlDocument.Load(filePath); //返回根节点 return xmlDocument.DocumentElement; } #endregion #region 获取指定XPath表达式节点的值 /// <summary> /// 获取指定XPath表达式节点的值 /// </summary> /// <param name="xmlFilePath">Xml文件的相对路径</param> /// <param name="xPath">XPath表达式, /// 范例1: @"Skill/First/SkillItem", 等效于 @"//Skill/First/SkillItem" /// 范例2: @"Table[USERNAME='a']" , []表示筛选,USERNAME是Table下的一个子节点. /// 范例3: @"ApplyPost/Item[@itemName='岗位编号']",@itemName是Item节点的属性. /// </param> public static string GetValue(string xmlFilePath, string xPath) { //创建根对象 XmlElement rootElement = CreateRootElement(xmlFilePath); //返回XPath节点的值 return rootElement.SelectSingleNode(xPath).InnerText; } #endregion #region 获取指定XPath表达式节点的属性值 /// <summary> /// 获取指定XPath表达式节点的属性值 /// </summary> /// <param name="xmlFilePath">Xml文件的相对路径</param> /// <param name="xPath">XPath表达式, /// 范例1: @"Skill/First/SkillItem", 等效于 @"//Skill/First/SkillItem" /// 范例2: @"Table[USERNAME='a']" , []表示筛选,USERNAME是Table下的一个子节点. /// 范例3: @"ApplyPost/Item[@itemName='岗位编号']",@itemName是Item节点的属性. /// </param> /// <param name="attributeName">属性名</param> public static string GetAttributeValue(string xmlFilePath, string xPath, string attributeName) { //创建根对象 XmlElement rootElement = CreateRootElement(xmlFilePath); //返回XPath节点的属性值 return rootElement.SelectSingleNode(xPath).Attributes[attributeName].Value; } #endregion #endregion public static void SetValue(string xmlFilePath, string xPath, string newtext) { //string path = SysHelper.GetPath(xmlFilePath); //var queryXML = from xmlLog in xelem.Descendants("msg_log") // //所有名字为Bin的记录 // where xmlLog.Element("user").Value == "Bin" // select xmlLog; //foreach (XElement el in queryXML) //{ // el.Element("user").Value = "LiuBin";//开始修改 //} //xelem.Save(path); } }
3、文件下载
public class FileDown { public FileDown() { } /// <summary> /// 参数为虚拟路径 /// </summary> public static string FileNameExtension(string FileName) { return Path.GetExtension(MapPathFile(FileName)); } /// <summary> /// 获取物理地址 /// </summary> public static string MapPathFile(string FileName) { return HttpContext.Current.Server.MapPath(FileName); } /// <summary> /// 普通下载 /// </summary> /// <param name="FileName">文件虚拟路径</param> public static void DownLoadold(string FileName) { string destFileName = MapPathFile(FileName); if (File.Exists(destFileName)) { FileInfo fi = new FileInfo(destFileName); HttpContext.Current.Response.Clear(); HttpContext.Current.Response.ClearHeaders(); HttpContext.Current.Response.Buffer = false; HttpContext.Current.Response.AppendHeader("Content-Disposition", "attachment;filename=" + HttpUtility.UrlEncode(Path.GetFileName(destFileName), System.Text.Encoding.UTF8)); HttpContext.Current.Response.AppendHeader("Content-Length", fi.Length.ToString()); HttpContext.Current.Response.ContentType = "application/octet-stream"; HttpContext.Current.Response.WriteFile(destFileName); HttpContext.Current.Response.Flush(); HttpContext.Current.Response.End(); } } /// <summary> /// 分块下载 /// </summary> /// <param name="FileName">文件虚拟路径</param> public static void DownLoad(string FileName) { string filePath = MapPathFile(FileName); long chunkSize = 204800; //指定块大小 byte[] buffer = new byte[chunkSize]; //建立一个200K的缓冲区 long dataToRead = 0; //已读的字节数 FileStream stream = null; try { //打开文件 stream = new FileStream(filePath, FileMode.Open, FileAccess.Read, FileShare.Read); dataToRead = stream.Length; //添加Http头 HttpContext.Current.Response.ContentType = "application/octet-stream"; HttpContext.Current.Response.AddHeader("Content-Disposition", "attachement;filename=" + HttpUtility.UrlEncode(Path.GetFileName(filePath))); HttpContext.Current.Response.AddHeader("Content-Length", dataToRead.ToString()); while (dataToRead > 0) { if (HttpContext.Current.Response.IsClientConnected) { int length = stream.Read(buffer, 0, Convert.ToInt32(chunkSize)); HttpContext.Current.Response.OutputStream.Write(buffer, 0, length); HttpContext.Current.Response.Flush(); HttpContext.Current.Response.Clear(); dataToRead -= length; } else { dataToRead = -1; //防止client失去连接 } } } catch (Exception ex) { HttpContext.Current.Response.Write("Error:" + ex.Message); } finally { if (stream != null) stream.Close(); HttpContext.Current.Response.Close(); } } /// <summary> /// 输出硬盘文件，提供下载 支持大文件、续传、速度限制、资源占用小 /// </summary> /// <param name="_Request">Page.Request对象</param> /// <param name="_Response">Page.Response对象</param> /// <param name="_fileName">下载文件名</param> /// <param name="_fullPath">带文件名下载路径</param> /// <param name="_speed">每秒允许下载的字节数</param> /// <returns>返回是否成功</returns> //--------------------------------------------------------------------- //调用： // string FullPath=Server.MapPath("count.txt"); // ResponseFile(this.Request,this.Response,"count.txt",FullPath,100); //--------------------------------------------------------------------- public static bool ResponseFile(HttpRequest _Request, HttpResponse _Response, string _fileName, string _fullPath, long _speed) { try { FileStream myFile = new FileStream(_fullPath, FileMode.Open, FileAccess.Read, FileShare.ReadWrite); BinaryReader br = new BinaryReader(myFile); try { _Response.AddHeader("Accept-Ranges", "bytes"); _Response.Buffer = false; long fileLength = myFile.Length; long startBytes = 0; int pack = 10240; //10K bytes int sleep = (int)Math.Floor((double)(1000 * pack / _speed)) + 1; if (_Request.Headers["Range"] != null) { _Response.StatusCode = 206; string[] range = _Request.Headers["Range"].Split(new char[] { '=', '-' }); startBytes = Convert.ToInt64(range[1]); } _Response.AddHeader("Content-Length", (fileLength - startBytes).ToString()); if (startBytes != 0) { _Response.AddHeader("Content-Range", string.Format(" bytes {0}-{1}/{2}", startBytes, fileLength - 1, fileLength)); } _Response.AddHeader("Connection", "Keep-Alive"); _Response.ContentType = "application/octet-stream"; _Response.AddHeader("Content-Disposition", "attachment;filename=" + HttpUtility.UrlEncode(_fileName, System.Text.Encoding.UTF8)); br.BaseStream.Seek(startBytes, SeekOrigin.Begin); int maxCount = (int)Math.Floor((double)((fileLength - startBytes) / pack)) + 1; for (int i = 0; i < maxCount; i++) { if (_Response.IsClientConnected) { _Response.BinaryWrite(br.ReadBytes(pack)); Thread.Sleep(sleep); } else { i = maxCount; } } } catch { return false; } finally { br.Close(); myFile.Close(); } } catch { return false; } return true; } }
public class FileDown
{
public FileDown()
{ }
/// <summary>
/// 参数为虚拟路径
/// </summary>
public static string FileNameExtension(string FileName)
{
return Path.GetExtension(MapPathFile(FileName));
}
/// <summary>
/// 获取物理地址
/// </summary>
public static string MapPathFile(string FileName)
{
return HttpContext.Current.Server.MapPath(FileName);
}
/// <summary>
/// 普通下载
/// </summary>
/// <param name="FileName">文件虚拟路径</param>
public static void DownLoadold(string FileName)
{
string destFileName = MapPathFile(FileName);
if (File.Exists(destFileName))
{
FileInfo fi = new FileInfo(destFileName);
HttpContext.Current.Response.Clear();
HttpContext.Current.Response.ClearHeaders();
HttpContext.Current.Response.Buffer = false;
HttpContext.Current.Response.AppendHeader("Content-Disposition", "attachment;filename=" + HttpUtility.UrlEncode(Path.GetFileName(destFileName), System.Text.Encoding.UTF8));
HttpContext.Current.Response.AppendHeader("Content-Length", fi.Length.ToString());
HttpContext.Current.Response.ContentType = "application/octet-stream";
HttpContext.Current.Response.WriteFile(destFileName);
HttpContext.Current.Response.Flush();
HttpContext.Current.Response.End();
}
}
/// <summary>
/// 分块下载
/// </summary>
/// <param name="FileName">文件虚拟路径</param>
public static void DownLoad(string FileName)
{
string filePath = MapPathFile(FileName);
long chunkSize = 204800; //指定块大小
byte[] buffer = new byte[chunkSize]; //建立一个200K的缓冲区
long dataToRead = 0; //已读的字节数
FileStream stream = null;
try
{
//打开文件
stream = new FileStream(filePath, FileMode.Open, FileAccess.Read, FileShare.Read);
dataToRead = stream.Length;
//添加Http头
HttpContext.Current.Response.ContentType = "application/octet-stream";
HttpContext.Current.Response.AddHeader("Content-Disposition", "attachement;filename=" + HttpUtility.UrlEncode(Path.GetFileName(filePath)));
HttpContext.Current.Response.AddHeader("Content-Length", dataToRead.ToString());
while (dataToRead > 0)
{
if (HttpContext.Current.Response.IsClientConnected)
{
int length = stream.Read(buffer, 0, Convert.ToInt32(chunkSize));
HttpContext.Current.Response.OutputStream.Write(buffer, 0, length);
HttpContext.Current.Response.Flush();
HttpContext.Current.Response.Clear();
dataToRead -= length;
}
else
{
dataToRead = -1; //防止client失去连接
}
}
}
catch (Exception ex)
{
HttpContext.Current.Response.Write("Error:" + ex.Message);
}
finally
{
if (stream != null) stream.Close();
HttpContext.Current.Response.Close();
}
}
/// <summary>
/// 输出硬盘文件，提供下载 支持大文件、续传、速度限制、资源占用小
/// </summary>
/// <param name="_Request">Page.Request对象</param>
/// <param name="_Response">Page.Response对象</param>
/// <param name="_fileName">下载文件名</param>
/// <param name="_fullPath">带文件名下载路径</param>
/// <param name="_speed">每秒允许下载的字节数</param>
/// <returns>返回是否成功</returns>
//---------------------------------------------------------------------
//调用：
// string FullPath=Server.MapPath("count.txt");
// ResponseFile(this.Request,this.Response,"count.txt",FullPath,100);
//---------------------------------------------------------------------
public static bool ResponseFile(HttpRequest _Request, HttpResponse _Response, string _fileName, string _fullPath, long _speed)
{
try
{
FileStream myFile = new FileStream(_fullPath, FileMode.Open, FileAccess.Read, FileShare.ReadWrite);
BinaryReader br = new BinaryReader(myFile);
try
{
_Response.AddHeader("Accept-Ranges", "bytes");
_Response.Buffer = false;
long fileLength = myFile.Length;
long startBytes = 0;
int pack = 10240; //10K bytes
int sleep = (int)Math.Floor((double)(1000 * pack / _speed)) + 1;
if (_Request.Headers["Range"] != null)
{
_Response.StatusCode = 206;
string[] range = _Request.Headers["Range"].Split(new char[] { '=', '-' });
startBytes = Convert.ToInt64(range[1]);
}
_Response.AddHeader("Content-Length", (fileLength - startBytes).ToString());
if (startBytes != 0)
{
_Response.AddHeader("Content-Range", string.Format(" bytes {0}-{1}/{2}", startBytes, fileLength - 1, fileLength));
}
_Response.AddHeader("Connection", "Keep-Alive");
_Response.ContentType = "application/octet-stream";
_Response.AddHeader("Content-Disposition", "attachment;filename=" + HttpUtility.UrlEncode(_fileName, System.Text.Encoding.UTF8));
br.BaseStream.Seek(startBytes, SeekOrigin.Begin);
int maxCount = (int)Math.Floor((double)((fileLength - startBytes) / pack)) + 1;
for (int i = 0; i < maxCount; i++)
{
if (_Response.IsClientConnected)
{
_Response.BinaryWrite(br.ReadBytes(pack));
Thread.Sleep(sleep);
}
else
{
i = maxCount;
}
}
}
catch
{
return false;
}
finally
{
br.Close();
myFile.Close();
}
}
catch
{
return false;
}
return true;
}
}
4、ResponseFile输出下载
ResponseFile 输出硬盘文件，提供下载 支持大文件、续传、速度限制、资源占用小
public class DownLoadHelper { #region ResponseFile 输出硬盘文件，提供下载 支持大文件、续传、速度限制、资源占用小 /// <summary> /// 输出硬盘文件，提供下载 支持大文件、续传、速度限制、资源占用小 /// </summary> /// <param name="_Request">Page.Request对象</param> /// <param name="_Response">Page.Response对象</param> /// <param name="_fileName">下载文件名</param> /// <param name="_fullPath">带文件名下载路径</param> /// <param name="_speed">每秒允许下载的字节数</param> /// <returns>返回是否成功</returns> public static bool ResponseFile(HttpRequest _Request, HttpResponse _Response, string _fileName, string _fullPath, long _speed) { try { FileStream myFile = new FileStream(_fullPath, FileMode.Open, FileAccess.Read, FileShare.ReadWrite); BinaryReader br = new BinaryReader(myFile); try { _Response.AddHeader("Accept-Ranges", "bytes"); _Response.Buffer = false; long fileLength = myFile.Length; long startBytes = 0; int pack = 10240; //10K bytes //int sleep = 200; //每秒5次 即5*10K bytes每秒 int sleep = (int)Math.Floor((double)(1000 * pack / _speed)) + 1; if (_Request.Headers["Range"] != null) { _Response.StatusCode = 206; string[] range = _Request.Headers["Range"].Split(new char[] { '=', '-' }); startBytes = Convert.ToInt64(range[1]); } _Response.AddHeader("Content-Length", (fileLength - startBytes).ToString()); if (startBytes != 0) { _Response.AddHeader("Content-Range", string.Format(" bytes {0}-{1}/{2}", startBytes, fileLength - 1, fileLength)); } _Response.AddHeader("Connection", "Keep-Alive"); _Response.ContentType = "application/octet-stream"; _Response.AddHeader("Content-Disposition", "attachment;filename=" + HttpUtility.UrlEncode(_fileName, System.Text.Encoding.UTF8)); br.BaseStream.Seek(startBytes, SeekOrigin.Begin); int maxCount = (int)Math.Floor((double)((fileLength - startBytes) / pack)) + 1; for (int i = 0; i < maxCount; i++) { if (_Response.IsClientConnected) { _Response.BinaryWrite(br.ReadBytes(pack)); Thread.Sleep(sleep); } else { i = maxCount; } } } catch { return false; } finally { br.Close(); myFile.Close(); } } catch { return false; } return true; } #endregion }
public class DownLoadHelper
{
#region ResponseFile 输出硬盘文件，提供下载 支持大文件、续传、速度限制、资源占用小
/// <summary>
/// 输出硬盘文件，提供下载 支持大文件、续传、速度限制、资源占用小
/// </summary>
/// <param name="_Request">Page.Request对象</param>
/// <param name="_Response">Page.Response对象</param>
/// <param name="_fileName">下载文件名</param>
/// <param name="_fullPath">带文件名下载路径</param>
/// <param name="_speed">每秒允许下载的字节数</param>
/// <returns>返回是否成功</returns>
public static bool ResponseFile(HttpRequest _Request, HttpResponse _Response, string _fileName, string _fullPath, long _speed)
{
try
{
FileStream myFile = new FileStream(_fullPath, FileMode.Open, FileAccess.Read, FileShare.ReadWrite);
BinaryReader br = new BinaryReader(myFile);
try
{
_Response.AddHeader("Accept-Ranges", "bytes");
_Response.Buffer = false;
long fileLength = myFile.Length;
long startBytes = 0;
int pack = 10240; //10K bytes
//int sleep = 200; //每秒5次 即5*10K bytes每秒
int sleep = (int)Math.Floor((double)(1000 * pack / _speed)) + 1;
if (_Request.Headers["Range"] != null)
{
_Response.StatusCode = 206;
string[] range = _Request.Headers["Range"].Split(new char[] { '=', '-' });
startBytes = Convert.ToInt64(range[1]);
}
_Response.AddHeader("Content-Length", (fileLength - startBytes).ToString());
if (startBytes != 0)
{
_Response.AddHeader("Content-Range", string.Format(" bytes {0}-{1}/{2}", startBytes, fileLength - 1, fileLength));
}
_Response.AddHeader("Connection", "Keep-Alive");
_Response.ContentType = "application/octet-stream";
_Response.AddHeader("Content-Disposition", "attachment;filename=" + HttpUtility.UrlEncode(_fileName, System.Text.Encoding.UTF8));
br.BaseStream.Seek(startBytes, SeekOrigin.Begin);
int maxCount = (int)Math.Floor((double)((fileLength - startBytes) / pack)) + 1;
for (int i = 0; i < maxCount; i++)
{
if (_Response.IsClientConnected)
{
_Response.BinaryWrite(br.ReadBytes(pack));
Thread.Sleep(sleep);
}
else
{
i = maxCount;
}
}
}
catch
{
return false;
}
finally
{
br.Close();
myFile.Close();
}
}
catch
{
return false;
}
return true;
}
#endregion
}
5、字符串操作
/// <summary> /// 字符串操作类 /// 1、GetStrArray(string str, char speater, bool toLower) 把字符串按照分隔符转换成 List /// 2、GetStrArray(string str) 把字符串转 按照, 分割 换为数据 /// 3、GetArrayStr(List list, string speater) 把 List 按照分隔符组装成 string /// 4、GetArrayStr(List list) 得到数组列表以逗号分隔的字符串 /// 5、GetArrayValueStr(Dictionary<int, int> list)得到数组列表以逗号分隔的字符串 /// 6、DelLastComma(string str)删除最后结尾的一个逗号 /// 7、DelLastChar(string str, string strchar)删除最后结尾的指定字符后的字符 /// 8、ToSBC(string input)转全角的函数(SBC case) /// 9、ToDBC(string input)转半角的函数(SBC case) /// 10、GetSubStringList(string o_str, char sepeater)把字符串按照指定分隔符装成 List 去除重复 /// 11、GetCleanStyle(string StrList, string SplitString)将字符串样式转换为纯字符串 /// 12、GetNewStyle(string StrList, string NewStyle, string SplitString, out string Error)将字符串转换为新样式 /// 13、SplitMulti(string str, string splitstr)分割字符串 /// 14、SqlSafeString(string String, bool IsDel) /// </summary> public class StringHelper { /// <summary> /// 把字符串按照分隔符转换成 List /// </summary> /// <param name="str">源字符串</param> /// <param name="speater">分隔符</param> /// <param name="toLower">是否转换为小写</param> /// <returns></returns> public static List<string> GetStrArray(string str, char speater, bool toLower) { List<string> list = new List<string>(); string[] ss = str.Split(speater); foreach (string s in ss) { if (!string.IsNullOrEmpty(s) && s != speater.ToString()) { string strVal = s; if (toLower) { strVal = s.ToLower(); } list.Add(strVal); } } return list; } /// <summary> /// 把字符串转 按照, 分割 换为数据 /// </summary> /// <param name="str"></param> /// <returns></returns> public static string[] GetStrArray(string str) { return str.Split(new Char[] { ',' }); } /// <summary> /// 把 List<string> 按照分隔符组装成 string /// </summary> /// <param name="list"></param> /// <param name="speater"></param> /// <returns></returns> public static string GetArrayStr(List<string> list, string speater) { StringBuilder sb = new StringBuilder(); for (int i = 0; i < list.Count; i++) { if (i == list.Count - 1) { sb.Append(list[i]); } else { sb.Append(list[i]); sb.Append(speater); } } return sb.ToString(); } /// <summary> /// 得到数组列表以逗号分隔的字符串 /// </summary> /// <param name="list"></param> /// <returns></returns> public static string GetArrayStr(List<int> list) { StringBuilder sb = new StringBuilder(); for (int i = 0; i < list.Count; i++) { if (i == list.Count - 1) { sb.Append(list[i].ToString()); } else { sb.Append(list[i]); sb.Append(","); } } return sb.ToString(); } /// <summary> /// 得到数组列表以逗号分隔的字符串 /// </summary> /// <param name="list"></param> /// <returns></returns> public static string GetArrayValueStr(Dictionary<int, int> list) { StringBuilder sb = new StringBuilder(); foreach (KeyValuePair<int, int> kvp in list) { sb.Append(kvp.Value + ","); } if (list.Count > 0) { return DelLastComma(sb.ToString()); } else { return ""; } } #region 删除最后一个字符之后的字符 /// <summary> /// 删除最后结尾的一个逗号 /// </summary> public static string DelLastComma(string str) { return str.Substring(0, str.LastIndexOf(",")); } /// <summary> /// 删除最后结尾的指定字符后的字符 /// </summary> public static string DelLastChar(string str, string strchar) { return str.Substring(0, str.LastIndexOf(strchar)); } #endregion /// <summary> /// 转全角的函数(SBC case) /// </summary> /// <param name="input"></param> /// <returns></returns> public static string ToSBC(string input) { //半角转全角： char[] c = input.ToCharArray(); for (int i = 0; i < c.Length; i++) { if (c[i] == 32) { c[i] = (char)12288; continue; } if (c[i] < 127) c[i] = (char)(c[i] + 65248); } return new string(c); } /// <summary> /// 转半角的函数(SBC case) /// </summary> /// <param name="input">输入</param> /// <returns></returns> public static string ToDBC(string input) { char[] c = input.ToCharArray(); for (int i = 0; i < c.Length; i++) { if (c[i] == 12288) { c[i] = (char)32; continue; } if (c[i] > 65280 && c[i] < 65375) c[i] = (char)(c[i] - 65248); } return new string(c); } /// <summary> /// 把字符串按照指定分隔符装成 List 去除重复 /// </summary> /// <param name="o_str"></param> /// <param name="sepeater"></param> /// <returns></returns> public static List<string> GetSubStringList(string o_str, char sepeater) { List<string> list = new List<string>(); string[] ss = o_str.Split(sepeater); foreach (string s in ss) { if (!string.IsNullOrEmpty(s) && s != sepeater.ToString()) { list.Add(s); } } return list; } #region 将字符串样式转换为纯字符串 /// <summary> /// 将字符串样式转换为纯字符串 /// </summary> /// <param name="StrList"></param> /// <param name="SplitString"></param> /// <returns></returns> public static string GetCleanStyle(string StrList, string SplitString) { string RetrunValue = ""; //如果为空，返回空值 if (StrList == null) { RetrunValue = ""; } else { //返回去掉分隔符 string NewString = ""; NewString = StrList.Replace(SplitString, ""); RetrunValue = NewString; } return RetrunValue; } #endregion #region 将字符串转换为新样式 /// <summary> /// 将字符串转换为新样式 /// </summary> /// <param name="StrList"></param> /// <param name="NewStyle"></param> /// <param name="SplitString"></param> /// <param name="Error"></param> /// <returns></returns> public static string GetNewStyle(string StrList, string NewStyle, string SplitString, out string Error) { string ReturnValue = ""; //如果输入空值，返回空，并给出错误提示 if (StrList == null) { ReturnValue = ""; Error = "请输入需要划分格式的字符串"; } else { //检查传入的字符串长度和样式是否匹配,如果不匹配，则说明使用错误。给出错误信息并返回空值 int strListLength = StrList.Length; int NewStyleLength = GetCleanStyle(NewStyle, SplitString).Length; if (strListLength != NewStyleLength) { ReturnValue = ""; Error = "样式格式的长度与输入的字符长度不符，请重新输入"; } else { //检查新样式中分隔符的位置 string Lengstr = ""; for (int i = 0; i < NewStyle.Length; i++) { if (NewStyle.Substring(i, 1) == SplitString) { Lengstr = Lengstr + "," + i; } } if (Lengstr != "") { Lengstr = Lengstr.Substring(1); } //将分隔符放在新样式中的位置 string[] str = Lengstr.Split(','); foreach (string bb in str) { StrList = StrList.Insert(int.Parse(bb), SplitString); } //给出最后的结果 ReturnValue = StrList; //因为是正常的输出，没有错误 Error = ""; } } return ReturnValue; } #endregion /// <summary> /// 分割字符串 /// </summary> /// <param name="str"></param> /// <param name="splitstr"></param> /// <returns></returns> public static string[] SplitMulti(string str, string splitstr) { string[] strArray = null; if ((str != null) && (str != "")) { strArray = new Regex(splitstr).Split(str); } return strArray; } public static string SqlSafeString(string String, bool IsDel) { if (IsDel) { String = String.Replace("'", ""); String = String.Replace("\"", ""); return String; } String = String.Replace("'", "'"); String = String.Replace("\"", """); return String; } #region 获取正确的Id，如果不是正整数，返回0 /// <summary> /// 获取正确的Id，如果不是正整数，返回0 /// </summary> /// <param name="_value"></param> /// <returns>返回正确的整数ID，失败返回0</returns> public static int StrToId(string _value) { if (IsNumberId(_value)) return int.Parse(_value); else return 0; } #endregion #region 检查一个字符串是否是纯数字构成的，一般用于查询字符串参数的有效性验证。 /// <summary> /// 检查一个字符串是否是纯数字构成的，一般用于查询字符串参数的有效性验证。(0除外) /// </summary> /// <param name="_value">需验证的字符串。。</param> /// <returns>是否合法的bool值。</returns> public static bool IsNumberId(string _value) { return QuickValidate("^[1-9]*[0-9]*$", _value); } #endregion #region 快速验证一个字符串是否符合指定的正则表达式。 /// <summary> /// 快速验证一个字符串是否符合指定的正则表达式。 /// </summary> /// <param name="_express">正则表达式的内容。</param> /// <param name="_value">需验证的字符串。</param> /// <returns>是否合法的bool值。</returns> public static bool QuickValidate(string _express, string _value) { if (_value == null) return false; Regex myRegex = new Regex(_express); if (_value.Length == 0) { return false; } return myRegex.IsMatch(_value); } #endregion #region 根据配置对指定字符串进行 MD5 加密 /// <summary> /// 根据配置对指定字符串进行 MD5 加密 /// </summary> /// <param name="s"></param> /// <returns></returns> public static string GetMD5(string s) { //md5加密 s = System.Web.Security.FormsAuthentication.HashPasswordForStoringInConfigFile(s, "md5").ToString(); return s.ToLower().Substring(8, 16); } #endregion #region 得到字符串长度，一个汉字长度为2 /// <summary> /// 得到字符串长度，一个汉字长度为2 /// </summary> /// <param name="inputString">参数字符串</param> /// <returns></returns> public static int StrLength(string inputString) { System.Text.ASCIIEncoding ascii = new System.Text.ASCIIEncoding(); int tempLen = 0; byte[] s = ascii.GetBytes(inputString); for (int i = 0; i < s.Length; i++) { if ((int)s[i] == 63) tempLen += 2; else tempLen += 1; } return tempLen; } #endregion #region 截取指定长度字符串 /// <summary> /// 截取指定长度字符串 /// </summary> /// <param name="inputString">要处理的字符串</param> /// <param name="len">指定长度</param> /// <returns>返回处理后的字符串</returns> public static string ClipString(string inputString, int len) { bool isShowFix = false; if (len % 2 == 1) { isShowFix = true; len--; } System.Text.ASCIIEncoding ascii = new System.Text.ASCIIEncoding(); int tempLen = 0; string tempString = ""; byte[] s = ascii.GetBytes(inputString); for (int i = 0; i < s.Length; i++) { if ((int)s[i] == 63) tempLen += 2; else tempLen += 1; try { tempString += inputString.Substring(i, 1); } catch { break; } if (tempLen > len) break; } byte[] mybyte = System.Text.Encoding.Default.GetBytes(inputString); if (isShowFix && mybyte.Length > len) tempString += "…"; return tempString; } #endregion #region HTML转行成TEXT /// <summary> /// HTML转行成TEXT /// </summary> /// <param name="strHtml"></param> /// <returns></returns> public static string HtmlToTxt(string strHtml) { string[] aryReg ={ @"<script[^>]*?>.*?</script>", @"<(\/\s*)?!?((\w+:)?\w+)(\w+(\s*=?\s*(([""'])(\\[""'tbnr]|[^\7])*?\7|\w+)|.{0})|\s)*?(\/\s*)?>", @"([\r\n])[\s]+", @"&(quot|#34);", @"&(amp|#38);", @"&(lt|#60);", @"&(gt|#62);", @"&(nbsp|#160);", @"&(iexcl|#161);", @"&(cent|#162);", @"&(pound|#163);", @"&(copy|#169);", @"&#(\d+);", @"-->", @"<!--.*\n" }; string newReg = aryReg[0]; string strOutput = strHtml; for (int i = 0; i < aryReg.Length; i++) { Regex regex = new Regex(aryReg[i], RegexOptions.IgnoreCase); strOutput = regex.Replace(strOutput, string.Empty); } strOutput.Replace("<", ""); strOutput.Replace(">", ""); strOutput.Replace("\r\n", ""); return strOutput; } #endregion #region 判断对象是否为空 /// <summary> /// 判断对象是否为空，为空返回true /// </summary> /// <typeparam name="T">要验证的对象的类型</typeparam> /// <param name="data">要验证的对象</param> public static bool IsNullOrEmpty<T>(T data) { //如果为null if (data == null) { return true; } //如果为"" if (data.GetType() == typeof(String)) { if (string.IsNullOrEmpty(data.ToString().Trim())) { return true; } } //如果为DBNull if (data.GetType() == typeof(DBNull)) { return true; } //不为空 return false; } /// <summary> /// 判断对象是否为空，为空返回true /// </summary> /// <param name="data">要验证的对象</param> public static bool IsNullOrEmpty(object data) { //如果为null if (data == null) { return true; } //如果为"" if (data.GetType() == typeof(String)) { if (string.IsNullOrEmpty(data.ToString().Trim())) { return true; } } //如果为DBNull if (data.GetType() == typeof(DBNull)) { return true; } //不为空 return false; } #endregion }
/// <summary>
/// 字符串操作类
/// 1、GetStrArray(string str, char speater, bool toLower) 把字符串按照分隔符转换成 List
/// 2、GetStrArray(string str) 把字符串转 按照, 分割 换为数据
/// 3、GetArrayStr(List list, string speater) 把 List 按照分隔符组装成 string
/// 4、GetArrayStr(List list) 得到数组列表以逗号分隔的字符串
/// 5、GetArrayValueStr(Dictionary<int, int> list)得到数组列表以逗号分隔的字符串
/// 6、DelLastComma(string str)删除最后结尾的一个逗号
/// 7、DelLastChar(string str, string strchar)删除最后结尾的指定字符后的字符
/// 8、ToSBC(string input)转全角的函数(SBC case)
/// 9、ToDBC(string input)转半角的函数(SBC case)
/// 10、GetSubStringList(string o_str, char sepeater)把字符串按照指定分隔符装成 List 去除重复
/// 11、GetCleanStyle(string StrList, string SplitString)将字符串样式转换为纯字符串
/// 12、GetNewStyle(string StrList, string NewStyle, string SplitString, out string Error)将字符串转换为新样式
/// 13、SplitMulti(string str, string splitstr)分割字符串
/// 14、SqlSafeString(string String, bool IsDel)
/// </summary>
public class StringHelper
{
/// <summary>
/// 把字符串按照分隔符转换成 List
/// </summary>
/// <param name="str">源字符串</param>
/// <param name="speater">分隔符</param>
/// <param name="toLower">是否转换为小写</param>
/// <returns></returns>
public static List<string> GetStrArray(string str, char speater, bool toLower)
{
List<string> list = new List<string>();
string[] ss = str.Split(speater);
foreach (string s in ss)
{
if (!string.IsNullOrEmpty(s) && s != speater.ToString())
{
string strVal = s;
if (toLower)
{
strVal = s.ToLower();
}
list.Add(strVal);
}
}
return list;
}
/// <summary>
/// 把字符串转 按照, 分割 换为数据
/// </summary>
/// <param name="str"></param>
/// <returns></returns>
public static string[] GetStrArray(string str)
{
return str.Split(new Char[] { ',' });
}
/// <summary>
/// 把 List<string> 按照分隔符组装成 string
/// </summary>
/// <param name="list"></param>
/// <param name="speater"></param>
/// <returns></returns>
public static string GetArrayStr(List<string> list, string speater)
{
StringBuilder sb = new StringBuilder();
for (int i = 0; i < list.Count; i++)
{
if (i == list.Count - 1)
{
sb.Append(list[i]);
}
else
{
sb.Append(list[i]);
sb.Append(speater);
}
}
return sb.ToString();
}
/// <summary>
/// 得到数组列表以逗号分隔的字符串
/// </summary>
/// <param name="list"></param>
/// <returns></returns>
public static string GetArrayStr(List<int> list)
{
StringBuilder sb = new StringBuilder();
for (int i = 0; i < list.Count; i++)
{
if (i == list.Count - 1)
{
sb.Append(list[i].ToString());
}
else
{
sb.Append(list[i]);
sb.Append(",");
}
}
return sb.ToString();
}
/// <summary>
/// 得到数组列表以逗号分隔的字符串
/// </summary>
/// <param name="list"></param>
/// <returns></returns>
public static string GetArrayValueStr(Dictionary<int, int> list)
{
StringBuilder sb = new StringBuilder();
foreach (KeyValuePair<int, int> kvp in list)
{
sb.Append(kvp.Value + ",");
}
if (list.Count > 0)
{
return DelLastComma(sb.ToString());
}
else
{
return "";
}
}
#region 删除最后一个字符之后的字符
/// <summary>
/// 删除最后结尾的一个逗号
/// </summary>
public static string DelLastComma(string str)
{
return str.Substring(0, str.LastIndexOf(","));
}
/// <summary>
/// 删除最后结尾的指定字符后的字符
/// </summary>
public static string DelLastChar(string str, string strchar)
{
return str.Substring(0, str.LastIndexOf(strchar));
}
#endregion
/// <summary>
/// 转全角的函数(SBC case)
/// </summary>
/// <param name="input"></param>
/// <returns></returns>
public static string ToSBC(string input)
{
//半角转全角：
char[] c = input.ToCharArray();
for (int i = 0; i < c.Length; i++)
{
if (c[i] == 32)
{
c[i] = (char)12288;
continue;
}
if (c[i] < 127)
c[i] = (char)(c[i] + 65248);
}
return new string(c);
}
/// <summary>
/// 转半角的函数(SBC case)
/// </summary>
/// <param name="input">输入</param>
/// <returns></returns>
public static string ToDBC(string input)
{
char[] c = input.ToCharArray();
for (int i = 0; i < c.Length; i++)
{
if (c[i] == 12288)
{
c[i] = (char)32;
continue;
}
if (c[i] > 65280 && c[i] < 65375)
c[i] = (char)(c[i] - 65248);
}
return new string(c);
}
/// <summary>
/// 把字符串按照指定分隔符装成 List 去除重复
/// </summary>
/// <param name="o_str"></param>
/// <param name="sepeater"></param>
/// <returns></returns>
public static List<string> GetSubStringList(string o_str, char sepeater)
{
List<string> list = new List<string>();
string[] ss = o_str.Split(sepeater);
foreach (string s in ss)
{
if (!string.IsNullOrEmpty(s) && s != sepeater.ToString())
{
list.Add(s);
}
}
return list;
}
#region 将字符串样式转换为纯字符串
/// <summary>
/// 将字符串样式转换为纯字符串
/// </summary>
/// <param name="StrList"></param>
/// <param name="SplitString"></param>
/// <returns></returns>
public static string GetCleanStyle(string StrList, string SplitString)
{
string RetrunValue = "";
//如果为空，返回空值
if (StrList == null)
{
RetrunValue = "";
}
else
{
//返回去掉分隔符
string NewString = "";
NewString = StrList.Replace(SplitString, "");
RetrunValue = NewString;
}
return RetrunValue;
}
#endregion
#region 将字符串转换为新样式
/// <summary>
/// 将字符串转换为新样式
/// </summary>
/// <param name="StrList"></param>
/// <param name="NewStyle"></param>
/// <param name="SplitString"></param>
/// <param name="Error"></param>
/// <returns></returns>
public static string GetNewStyle(string StrList, string NewStyle, string SplitString, out string Error)
{
string ReturnValue = "";
//如果输入空值，返回空，并给出错误提示
if (StrList == null)
{
ReturnValue = "";
Error = "请输入需要划分格式的字符串";
}
else
{
//检查传入的字符串长度和样式是否匹配,如果不匹配，则说明使用错误。给出错误信息并返回空值
int strListLength = StrList.Length;
int NewStyleLength = GetCleanStyle(NewStyle, SplitString).Length;
if (strListLength != NewStyleLength)
{
ReturnValue = "";
Error = "样式格式的长度与输入的字符长度不符，请重新输入";
}
else
{
//检查新样式中分隔符的位置
string Lengstr = "";
for (int i = 0; i < NewStyle.Length; i++)
{
if (NewStyle.Substring(i, 1) == SplitString)
{
Lengstr = Lengstr + "," + i;
}
}
if (Lengstr != "")
{
Lengstr = Lengstr.Substring(1);
}
//将分隔符放在新样式中的位置
string[] str = Lengstr.Split(',');
foreach (string bb in str)
{
StrList = StrList.Insert(int.Parse(bb), SplitString);
}
//给出最后的结果
ReturnValue = StrList;
//因为是正常的输出，没有错误
Error = "";
}
}
return ReturnValue;
}
#endregion
/// <summary>
/// 分割字符串
/// </summary>
/// <param name="str"></param>
/// <param name="splitstr"></param>
/// <returns></returns>
public static string[] SplitMulti(string str, string splitstr)
{
string[] strArray = null;
if ((str != null) && (str != ""))
{
strArray = new Regex(splitstr).Split(str);
}
return strArray;
}
public static string SqlSafeString(string String, bool IsDel)
{
if (IsDel)
{
String = String.Replace("'", "");
String = String.Replace("\"", "");
return String;
}
String = String.Replace("'", "'");
String = String.Replace("\"", """);
return String;
}
#region 获取正确的Id，如果不是正整数，返回0
/// <summary>
/// 获取正确的Id，如果不是正整数，返回0
/// </summary>
/// <param name="_value"></param>
/// <returns>返回正确的整数ID，失败返回0</returns>
public static int StrToId(string _value)
{
if (IsNumberId(_value))
return int.Parse(_value);
else
return 0;
}
#endregion
#region 检查一个字符串是否是纯数字构成的，一般用于查询字符串参数的有效性验证。
/// <summary>
/// 检查一个字符串是否是纯数字构成的，一般用于查询字符串参数的有效性验证。(0除外)
/// </summary>
/// <param name="_value">需验证的字符串。。</param>
/// <returns>是否合法的bool值。</returns>
public static bool IsNumberId(string _value)
{
return QuickValidate("^[1-9]*[0-9]*$", _value);
}
#endregion
#region 快速验证一个字符串是否符合指定的正则表达式。
/// <summary>
/// 快速验证一个字符串是否符合指定的正则表达式。
/// </summary>
/// <param name="_express">正则表达式的内容。</param>
/// <param name="_value">需验证的字符串。</param>
/// <returns>是否合法的bool值。</returns>
public static bool QuickValidate(string _express, string _value)
{
if (_value == null) return false;
Regex myRegex = new Regex(_express);
if (_value.Length == 0)
{
return false;
}
return myRegex.IsMatch(_value);
}
#endregion
#region 根据配置对指定字符串进行 MD5 加密
/// <summary>
/// 根据配置对指定字符串进行 MD5 加密
/// </summary>
/// <param name="s"></param>
/// <returns></returns>
public static string GetMD5(string s)
{
//md5加密
s = System.Web.Security.FormsAuthentication.HashPasswordForStoringInConfigFile(s, "md5").ToString();
return s.ToLower().Substring(8, 16);
}
#endregion
#region 得到字符串长度，一个汉字长度为2
/// <summary>
/// 得到字符串长度，一个汉字长度为2
/// </summary>
/// <param name="inputString">参数字符串</param>
/// <returns></returns>
public static int StrLength(string inputString)
{
System.Text.ASCIIEncoding ascii = new System.Text.ASCIIEncoding();
int tempLen = 0;
byte[] s = ascii.GetBytes(inputString);
for (int i = 0; i < s.Length; i++)
{
if ((int)s[i] == 63)
tempLen += 2;
else
tempLen += 1;
}
return tempLen;
}
#endregion
#region 截取指定长度字符串
/// <summary>
/// 截取指定长度字符串
/// </summary>
/// <param name="inputString">要处理的字符串</param>
/// <param name="len">指定长度</param>
/// <returns>返回处理后的字符串</returns>
public static string ClipString(string inputString, int len)
{
bool isShowFix = false;
if (len % 2 == 1)
{
isShowFix = true;
len--;
}
System.Text.ASCIIEncoding ascii = new System.Text.ASCIIEncoding();
int tempLen = 0;
string tempString = "";
byte[] s = ascii.GetBytes(inputString);
for (int i = 0; i < s.Length; i++)
{
if ((int)s[i] == 63)
tempLen += 2;
else
tempLen += 1;
try
{
tempString += inputString.Substring(i, 1);
}
catch
{
break;
}
if (tempLen > len)
break;
}
byte[] mybyte = System.Text.Encoding.Default.GetBytes(inputString);
if (isShowFix && mybyte.Length > len)
tempString += "…";
return tempString;
}
#endregion
#region HTML转行成TEXT
/// <summary>
/// HTML转行成TEXT
/// </summary>
/// <param name="strHtml"></param>
/// <returns></returns>
public static string HtmlToTxt(string strHtml)
{
string[] aryReg ={
@"<script[^>]*?>.*?</script>",
@"<(\/\s*)?!?((\w+:)?\w+)(\w+(\s*=?\s*(([""'])(\\[""'tbnr]|[^\7])*?\7|\w+)|.{0})|\s)*?(\/\s*)?>",
@"([\r\n])[\s]+",
@"&(quot|#34);",
@"&(amp|#38);",
@"&(lt|#60);",
@"&(gt|#62);",
@"&(nbsp|#160);",
@"&(iexcl|#161);",
@"&(cent|#162);",
@"&(pound|#163);",
@"&(copy|#169);",
@"&#(\d+);",
@"-->",
@"<!--.*\n"
};
string newReg = aryReg[0];
string strOutput = strHtml;
for (int i = 0; i < aryReg.Length; i++)
{
Regex regex = new Regex(aryReg[i], RegexOptions.IgnoreCase);
strOutput = regex.Replace(strOutput, string.Empty);
}
strOutput.Replace("<", "");
strOutput.Replace(">", "");
strOutput.Replace("\r\n", "");
return strOutput;
}
#endregion
#region 判断对象是否为空
/// <summary>
/// 判断对象是否为空，为空返回true
/// </summary>
/// <typeparam name="T">要验证的对象的类型</typeparam>
/// <param name="data">要验证的对象</param>
public static bool IsNullOrEmpty<T>(T data)
{
//如果为null
if (data == null)
{
return true;
}
//如果为""
if (data.GetType() == typeof(String))
{
if (string.IsNullOrEmpty(data.ToString().Trim()))
{
return true;
}
}
//如果为DBNull
if (data.GetType() == typeof(DBNull))
{
return true;
}
//不为空
return false;
}
/// <summary>
/// 判断对象是否为空，为空返回true
/// </summary>
/// <param name="data">要验证的对象</param>
public static bool IsNullOrEmpty(object data)
{
//如果为null
if (data == null)
{
return true;
}
//如果为""
if (data.GetType() == typeof(String))
{
if (string.IsNullOrEmpty(data.ToString().Trim()))
{
return true;
}
}
//如果为DBNull
if (data.GetType() == typeof(DBNull))
{
return true;
}
//不为空
return false;
}
#endregion
}
6、JS客户端输出
/// <summary> /// 客户端脚本输出 /// </summary> public class JsHelper { /// <summary> /// 弹出信息,并跳转指定页面。 /// </summary> public static void AlertAndRedirect(string message, string toURL) { string js = "<script language=javascript>alert('{0}');window.location.replace('{1}')</script>"; HttpContext.Current.Response.Write(string.Format(js, message, toURL)); HttpContext.Current.Response.End(); } /// <summary> /// 弹出信息,并返回历史页面 /// </summary> public static void AlertAndGoHistory(string message, int value) { string js = @"<Script language='JavaScript'>alert('{0}');history.go({1});</Script>"; HttpContext.Current.Response.Write(string.Format(js, message, value)); HttpContext.Current.Response.End(); } /// <summary> /// 直接跳转到指定的页面 /// </summary> public static void Redirect(string toUrl) { string js = @"<script language=javascript>window.location.replace('{0}')</script>"; HttpContext.Current.Response.Write(string.Format(js, toUrl)); } /// <summary> /// 弹出信息 并指定到父窗口 /// </summary> public static void AlertAndParentUrl(string message, string toURL) { string js = "<script language=javascript>alert('{0}');window.top.location.replace('{1}')</script>"; HttpContext.Current.Response.Write(string.Format(js, message, toURL)); } /// <summary> /// 返回到父窗口 /// </summary> public static void ParentRedirect(string ToUrl) { string js = "<script language=javascript>window.top.location.replace('{0}')</script>"; HttpContext.Current.Response.Write(string.Format(js, ToUrl)); } /// <summary> /// 返回历史页面 /// </summary> public static void BackHistory(int value) { string js = @"<Script language='JavaScript'>history.go({0});</Script>"; HttpContext.Current.Response.Write(string.Format(js, value)); HttpContext.Current.Response.End(); } /// <summary> /// 弹出信息 /// </summary> public static void Alert(string message) { string js = "<script language=javascript>alert('{0}');</script>"; HttpContext.Current.Response.Write(string.Format(js, message)); } /// <summary> /// 注册脚本块 /// </summary> public static void RegisterScriptBlock(System.Web.UI.Page page, string _ScriptString) { page.ClientScript.RegisterStartupScript(page.GetType(), "scriptblock", "<script type='text/javascript'>" + _ScriptString + "</script>"); } }
/// <summary>
/// 客户端脚本输出
/// </summary>
public class JsHelper
{
/// <summary>
/// 弹出信息,并跳转指定页面。
/// </summary>
public static void AlertAndRedirect(string message, string toURL)
{
string js = "<script language=javascript>alert('{0}');window.location.replace('{1}')</script>";
HttpContext.Current.Response.Write(string.Format(js, message, toURL));
HttpContext.Current.Response.End();
}
/// <summary>
/// 弹出信息,并返回历史页面
/// </summary>
public static void AlertAndGoHistory(string message, int value)
{
string js = @"<Script language='JavaScript'>alert('{0}');history.go({1});</Script>";
HttpContext.Current.Response.Write(string.Format(js, message, value));
HttpContext.Current.Response.End();
}
/// <summary>
/// 直接跳转到指定的页面
/// </summary>
public static void Redirect(string toUrl)
{
string js = @"<script language=javascript>window.location.replace('{0}')</script>";
HttpContext.Current.Response.Write(string.Format(js, toUrl));
}
/// <summary>
/// 弹出信息 并指定到父窗口
/// </summary>
public static void AlertAndParentUrl(string message, string toURL)
{
string js = "<script language=javascript>alert('{0}');window.top.location.replace('{1}')</script>";
HttpContext.Current.Response.Write(string.Format(js, message, toURL));
}
/// <summary>
/// 返回到父窗口
/// </summary>
public static void ParentRedirect(string ToUrl)
{
string js = "<script language=javascript>window.top.location.replace('{0}')</script>";
HttpContext.Current.Response.Write(string.Format(js, ToUrl));
}
/// <summary>
/// 返回历史页面
/// </summary>
public static void BackHistory(int value)
{
string js = @"<Script language='JavaScript'>history.go({0});</Script>";
HttpContext.Current.Response.Write(string.Format(js, value));
HttpContext.Current.Response.End();
}
/// <summary>
/// 弹出信息
/// </summary>
public static void Alert(string message)
{
string js = "<script language=javascript>alert('{0}');</script>";
HttpContext.Current.Response.Write(string.Format(js, message));
}
/// <summary>
/// 注册脚本块
/// </summary>
public static void RegisterScriptBlock(System.Web.UI.Page page, string _ScriptString)
{
page.ClientScript.RegisterStartupScript(page.GetType(), "scriptblock", "<script type='text/javascript'>" + _ScriptString + "</script>");
}
}
7、Cookie、Session、Cache操作
public class CookieHelper { /// <summary> /// 清除指定Cookie /// </summary> /// <param name="cookiename">cookiename</param> public static void ClearCookie(string cookiename) { HttpCookie cookie = HttpContext.Current.Request.Cookies[cookiename]; if (cookie != null) { cookie.Expires = DateTime.Now.AddYears(-3); HttpContext.Current.Response.Cookies.Add(cookie); } } /// <summary> /// 获取指定Cookie值 /// </summary> /// <param name="cookiename">cookiename</param> /// <returns></returns> public static string GetCookieValue(string cookiename) { HttpCookie cookie = HttpContext.Current.Request.Cookies[cookiename]; string str = string.Empty; if (cookie != null) { str = cookie.Value; } return str; } /// <summary> /// 添加一个Cookie（24小时过期） /// </summary> /// <param name="cookiename"></param> /// <param name="cookievalue"></param> public static void SetCookie(string cookiename, string cookievalue) { SetCookie(cookiename, cookievalue, DateTime.Now.AddDays(1.0)); } /// <summary> /// 添加一个Cookie /// </summary> /// <param name="cookiename">cookie名</param> /// <param name="cookievalue">cookie值</param> /// <param name="expires">过期时间 DateTime</param> public static void SetCookie(string cookiename, string cookievalue, DateTime expires) { HttpCookie cookie = new HttpCookie(cookiename) { Value = cookievalue, Expires = expires }; HttpContext.Current.Response.Cookies.Add(cookie); } }
public static class SessionHelper2 { /// <summary> /// 添加Session，调动有效期为20分钟 /// </summary> /// <param name="strSessionName">Session对象名称</param> /// <param name="strValue">Session值</param> public static void Add(string strSessionName, string strValue) { HttpContext.Current.Session[strSessionName] = strValue; HttpContext.Current.Session.Timeout = 20; } /// <summary> /// 添加Session，调动有效期为20分钟 /// </summary> /// <param name="strSessionName">Session对象名称</param> /// <param name="strValues">Session值数组</param> public static void Adds(string strSessionName, string[] strValues) { HttpContext.Current.Session[strSessionName] = strValues; HttpContext.Current.Session.Timeout = 20; } /// <summary> /// 添加Session /// </summary> /// <param name="strSessionName">Session对象名称</param> /// <param name="strValue">Session值</param> /// <param name="iExpires">调动有效期（分钟）</param> public static void Add(string strSessionName, string strValue, int iExpires) { HttpContext.Current.Session[strSessionName] = strValue; HttpContext.Current.Session.Timeout = iExpires; } /// <summary> /// 添加Session /// </summary> /// <param name="strSessionName">Session对象名称</param> /// <param name="strValues">Session值数组</param> /// <param name="iExpires">调动有效期（分钟）</param> public static void Adds(string strSessionName, string[] strValues, int iExpires) { HttpContext.Current.Session[strSessionName] = strValues; HttpContext.Current.Session.Timeout = iExpires; } /// <summary> /// 读取某个Session对象值 /// </summary> /// <param name="strSessionName">Session对象名称</param> /// <returns>Session对象值</returns> public static string Get(string strSessionName) { if (HttpContext.Current.Session[strSessionName] == null) { return null; } else { return HttpContext.Current.Session[strSessionName].ToString(); } } /// <summary> /// 读取某个Session对象值数组 /// </summary> /// <param name="strSessionName">Session对象名称</param> /// <returns>Session对象值数组</returns> public static string[] Gets(string strSessionName) { if (HttpContext.Current.Session[strSessionName] == null) { return null; } else { return (string[])HttpContext.Current.Session[strSessionName]; } } /// <summary> /// 删除某个Session对象 /// </summary> /// <param name="strSessionName">Session对象名称</param> public static void Del(string strSessionName) { HttpContext.Current.Session[strSessionName] = null; } }
public class CacheHelper { /// <summary> /// 获取数据缓存 /// </summary> /// <param name="CacheKey">键</param> public static object GetCache(string CacheKey) { System.Web.Caching.Cache objCache = HttpRuntime.Cache; return objCache[CacheKey]; } /// <summary> /// 设置数据缓存 /// </summary> public static void SetCache(string CacheKey, object objObject) { System.Web.Caching.Cache objCache = HttpRuntime.Cache; objCache.Insert(CacheKey, objObject); } /// <summary> /// 设置数据缓存 /// </summary> public static void SetCache(string CacheKey, object objObject, TimeSpan Timeout) { System.Web.Caching.Cache objCache = HttpRuntime.Cache; objCache.Insert(CacheKey, objObject, null, DateTime.MaxValue, Timeout, System.Web.Caching.CacheItemPriority.NotRemovable, null); } /// <summary> /// 设置数据缓存 /// </summary> public static void SetCache(string CacheKey, object objObject, DateTime absoluteExpiration, TimeSpan slidingExpiration) { System.Web.Caching.Cache objCache = HttpRuntime.Cache; objCache.Insert(CacheKey, objObject, null, absoluteExpiration, slidingExpiration); } /// <summary> /// 移除指定数据缓存 /// </summary> public static void RemoveAllCache(string CacheKey) { System.Web.Caching.Cache _cache = HttpRuntime.Cache; _cache.Remove(CacheKey); } /// <summary> /// 移除全部缓存 /// </summary> public static void RemoveAllCache() { System.Web.Caching.Cache _cache = HttpRuntime.Cache; IDictionaryEnumerator CacheEnum = _cache.GetEnumerator(); while (CacheEnum.MoveNext()) { _cache.Remove(CacheEnum.Key.ToString()); } } }
8、网络操作相关的类
/// <summary> /// 网络操作相关的类 /// </summary> public class NetHelper { #region 检查设置的IP地址是否正确，返回正确的IP地址 /// <summary> /// 检查设置的IP地址是否正确，并返回正确的IP地址,无效IP地址返回"-1"。 /// </summary> /// <param name="ip">设置的IP地址</param> //public static string GetValidIP(string ip) //{ // if (PageValidate.IsIP(ip)) // { // return ip; // } // else // { // return "-1"; // } //} #endregion #region 检查设置的端口号是否正确，返回正确的端口号 /// <summary> /// 检查设置的端口号是否正确，并返回正确的端口号,无效端口号返回-1。 /// </summary> /// <param name="port">设置的端口号</param> public static int GetValidPort(string port) { //声明返回的正确端口号 int validPort = -1; //最小有效端口号 const int MINPORT = 0; //最大有效端口号 const int MAXPORT = 65535; //检测端口号 try { //传入的端口号为空则抛出异常 if (port == "") { throw new Exception("端口号不能为空！"); } //检测端口范围 if ((Convert.ToInt32(port) < MINPORT) || (Convert.ToInt32(port) > MAXPORT)) { throw new Exception("端口号范围无效！"); } //为端口号赋值 validPort = Convert.ToInt32(port); } catch (Exception ex) { string errMessage = ex.Message; } return validPort; } #endregion #region 将字符串形式的IP地址转换成IPAddress对象 /// <summary> /// 将字符串形式的IP地址转换成IPAddress对象 /// </summary> /// <param name="ip">字符串形式的IP地址</param> public static IPAddress StringToIPAddress(string ip) { return IPAddress.Parse(ip); } #endregion #region 获取本机的计算机名 /// <summary> /// 获取本机的计算机名 /// </summary> public static string LocalHostName { get { return Dns.GetHostName(); } } #endregion #region 获取本机的局域网IP /// <summary> /// 获取本机的局域网IP /// </summary> public static string LANIP { get { //获取本机的IP列表,IP列表中的第一项是局域网IP，第二项是广域网IP IPAddress[] addressList = Dns.GetHostEntry(Dns.GetHostName()).AddressList; //如果本机IP列表为空，则返回空字符串 if (addressList.Length < 1) { return ""; } //返回本机的局域网IP return addressList[0].ToString(); } } #endregion #region 获取本机在Internet网络的广域网IP /// <summary> /// 获取本机在Internet网络的广域网IP /// </summary> public static string WANIP { get { //获取本机的IP列表,IP列表中的第一项是局域网IP，第二项是广域网IP IPAddress[] addressList = Dns.GetHostEntry(Dns.GetHostName()).AddressList; //如果本机IP列表小于2，则返回空字符串 if (addressList.Length < 2) { return ""; } //返回本机的广域网IP return addressList[1].ToString(); } } #endregion #region 获取远程客户机的IP地址 /// <summary> /// 获取远程客户机的IP地址 /// </summary> /// <param name="clientSocket">客户端的socket对象</param> public static string GetClientIP(Socket clientSocket) { IPEndPoint client = (IPEndPoint)clientSocket.RemoteEndPoint; return client.Address.ToString(); } #endregion #region 创建一个IPEndPoint对象 /// <summary> /// 创建一个IPEndPoint对象 /// </summary> /// <param name="ip">IP地址</param> /// <param name="port">端口号</param> public static IPEndPoint CreateIPEndPoint(string ip, int port) { IPAddress ipAddress = StringToIPAddress(ip); return new IPEndPoint(ipAddress, port); } #endregion #region 创建一个TcpListener对象 /// <summary> /// 创建一个自动分配IP和端口的TcpListener对象 /// </summary> public static TcpListener CreateTcpListener() { //创建一个自动分配的网络节点 IPAddress ipAddress = IPAddress.Any; IPEndPoint localEndPoint = new IPEndPoint(ipAddress, 0); return new TcpListener(localEndPoint); } /// <summary> /// 创建一个TcpListener对象 /// </summary> /// <param name="ip">IP地址</param> /// <param name="port">端口</param> public static TcpListener CreateTcpListener(string ip, int port) { //创建一个网络节点 IPAddress ipAddress = StringToIPAddress(ip); IPEndPoint localEndPoint = new IPEndPoint(ipAddress, port); return new TcpListener(localEndPoint); } #endregion #region 创建一个基于TCP协议的Socket对象 /// <summary> /// 创建一个基于TCP协议的Socket对象 /// </summary> public static Socket CreateTcpSocket() { return new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp); } #endregion #region 创建一个基于UDP协议的Socket对象 /// <summary> /// 创建一个基于UDP协议的Socket对象 /// </summary> public static Socket CreateUdpSocket() { return new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp); } #endregion #region 获取本地终结点 #region 获取TcpListener对象的本地终结点 /// <summary> /// 获取TcpListener对象的本地终结点 /// </summary> /// <param name="tcpListener">TcpListener对象</param> public static IPEndPoint GetLocalPoint(TcpListener tcpListener) { return (IPEndPoint)tcpListener.LocalEndpoint; } /// <summary> /// 获取TcpListener对象的本地终结点的IP地址 /// </summary> /// <param name="tcpListener">TcpListener对象</param> public static string GetLocalPoint_IP(TcpListener tcpListener) { IPEndPoint localEndPoint = (IPEndPoint)tcpListener.LocalEndpoint; return localEndPoint.Address.ToString(); } /// <summary> /// 获取TcpListener对象的本地终结点的端口号 /// </summary> /// <param name="tcpListener">TcpListener对象</param> public static int GetLocalPoint_Port(TcpListener tcpListener) { IPEndPoint localEndPoint = (IPEndPoint)tcpListener.LocalEndpoint; return localEndPoint.Port; } #endregion #region 获取Socket对象的本地终结点 /// <summary> /// 获取Socket对象的本地终结点 /// </summary> /// <param name="socket">Socket对象</param> public static IPEndPoint GetLocalPoint(Socket socket) { return (IPEndPoint)socket.LocalEndPoint; } /// <summary> /// 获取Socket对象的本地终结点的IP地址 /// </summary> /// <param name="socket">Socket对象</param> public static string GetLocalPoint_IP(Socket socket) { IPEndPoint localEndPoint = (IPEndPoint)socket.LocalEndPoint; return localEndPoint.Address.ToString(); } /// <summary> /// 获取Socket对象的本地终结点的端口号 /// </summary> /// <param name="socket">Socket对象</param> public static int GetLocalPoint_Port(Socket socket) { IPEndPoint localEndPoint = (IPEndPoint)socket.LocalEndPoint; return localEndPoint.Port; } #endregion #endregion #region 绑定终结点 /// <summary> /// 绑定终结点 /// </summary> /// <param name="socket">Socket对象</param> /// <param name="endPoint">要绑定的终结点</param> public static void BindEndPoint(Socket socket, IPEndPoint endPoint) { if (!socket.IsBound) { socket.Bind(endPoint); } } /// <summary> /// 绑定终结点 /// </summary> /// <param name="socket">Socket对象</param> /// <param name="ip">服务器IP地址</param> /// <param name="port">服务器端口</param> public static void BindEndPoint(Socket socket, string ip, int port) { //创建终结点 IPEndPoint endPoint = CreateIPEndPoint(ip, port); //绑定终结点 if (!socket.IsBound) { socket.Bind(endPoint); } } #endregion #region 指定Socket对象执行监听 /// <summary> /// 指定Socket对象执行监听，默认允许的最大挂起连接数为100 /// </summary> /// <param name="socket">执行监听的Socket对象</param> /// <param name="port">监听的端口号</param> public static void StartListen(Socket socket, int port) { //创建本地终结点 IPEndPoint localPoint = CreateIPEndPoint(NetHelper.LocalHostName, port); //绑定到本地终结点 BindEndPoint(socket, localPoint); //开始监听 socket.Listen(100); } /// <summary> /// 指定Socket对象执行监听 /// </summary> /// <param name="socket">执行监听的Socket对象</param> /// <param name="port">监听的端口号</param> /// <param name="maxConnection">允许的最大挂起连接数</param> public static void StartListen(Socket socket, int port, int maxConnection) { //创建本地终结点 IPEndPoint localPoint = CreateIPEndPoint(NetHelper.LocalHostName, port); //绑定到本地终结点 BindEndPoint(socket, localPoint); //开始监听 socket.Listen(maxConnection); } /// <summary> /// 指定Socket对象执行监听 /// </summary> /// <param name="socket">执行监听的Socket对象</param> /// <param name="ip">监听的IP地址</param> /// <param name="port">监听的端口号</param> /// <param name="maxConnection">允许的最大挂起连接数</param> public static void StartListen(Socket socket, string ip, int port, int maxConnection) { //绑定到本地终结点 BindEndPoint(socket, ip, port); //开始监听 socket.Listen(maxConnection); } #endregion #region 连接到基于TCP协议的服务器 /// <summary> /// 连接到基于TCP协议的服务器,连接成功返回true，否则返回false /// </summary> /// <param name="socket">Socket对象</param> /// <param name="ip">服务器IP地址</param> /// <param name="port">服务器端口号</param> public static bool Connect(Socket socket, string ip, int port) { try { //连接服务器 socket.Connect(ip, port); //检测连接状态 return socket.Poll(-1, SelectMode.SelectWrite); } catch (SocketException ex) { throw new Exception(ex.Message); //LogHelper.WriteTraceLog(TraceLogLevel.Error, ex.Message); } } #endregion #region 以同步方式发送消息 /// <summary> /// 以同步方式向指定的Socket对象发送消息 /// </summary> /// <param name="socket">socket对象</param> /// <param name="msg">发送的消息</param> public static void SendMsg(Socket socket, byte[] msg) { //发送消息 socket.Send(msg, msg.Length, SocketFlags.None); } /// <summary> /// 使用UTF8编码格式以同步方式向指定的Socket对象发送消息 /// </summary> /// <param name="socket">socket对象</param> /// <param name="msg">发送的消息</param> public static void SendMsg(Socket socket, string msg) { //将字符串消息转换成字符数组 byte[] buffer = ConvertHelper.StringToBytes(msg, Encoding.Default); //发送消息 socket.Send(buffer, buffer.Length, SocketFlags.None); } #endregion #region 以同步方式接收消息 /// <summary> /// 以同步方式接收消息 /// </summary> /// <param name="socket">socket对象</param> /// <param name="buffer">接收消息的缓冲区</param> public static void ReceiveMsg(Socket socket, byte[] buffer) { socket.Receive(buffer); } /// <summary> /// 以同步方式接收消息，并转换为UTF8编码格式的字符串,使用5000字节的默认缓冲区接收。 /// </summary> /// <param name="socket">socket对象</param> public static string ReceiveMsg(Socket socket) { //定义接收缓冲区 byte[] buffer = new byte[5000]; //接收数据，获取接收到的字节数 int receiveCount = socket.Receive(buffer); //定义临时缓冲区 byte[] tempBuffer = new byte[receiveCount]; //将接收到的数据写入临时缓冲区 Buffer.BlockCopy(buffer, 0, tempBuffer, 0, receiveCount); //转换成字符串，并将其返回 return ConvertHelper.BytesToString(tempBuffer, Encoding.Default); } #endregion #region 关闭基于Tcp协议的Socket对象 /// <summary> /// 关闭基于Tcp协议的Socket对象 /// </summary> /// <param name="socket">要关闭的Socket对象</param> public static void Close(Socket socket) { try { //禁止Socket对象接收和发送数据 socket.Shutdown(SocketShutdown.Both); } catch (SocketException ex) { throw ex; } finally { //关闭Socket对象 socket.Close(); } } #endregion #region 发送电子邮件 /// <summary> /// 发送电子邮件,所有SMTP配置信息均在config配置文件中system.net节设置. /// </summary> /// <param name="receiveEmail">接收电子邮件的地址</param> /// <param name="msgSubject">电子邮件的标题</param> /// <param name="msgBody">电子邮件的正文</param> /// <param name="IsEnableSSL">是否开启SSL</param> public static bool SendEmail(string receiveEmail, string msgSubject, string msgBody, bool IsEnableSSL) { //创建电子邮件对象 MailMessage email = new MailMessage(); //设置接收人的电子邮件地址 email.To.Add(receiveEmail); //设置邮件的标题 email.Subject = msgSubject; //设置邮件的正文 email.Body = msgBody; //设置邮件为HTML格式 email.IsBodyHtml = true; //创建SMTP客户端，将自动从配置文件中获取SMTP服务器信息 SmtpClient smtp = new SmtpClient(); //开启SSL smtp.EnableSsl = IsEnableSSL; try { //发送电子邮件 smtp.Send(email); return true; } catch (Exception ex) { throw ex; } } #endregion }
/// <summary>
/// 网络操作相关的类
/// </summary>
public class NetHelper
{
#region 检查设置的IP地址是否正确，返回正确的IP地址
/// <summary>
/// 检查设置的IP地址是否正确，并返回正确的IP地址,无效IP地址返回"-1"。
/// </summary>
/// <param name="ip">设置的IP地址</param>
//public static string GetValidIP(string ip)
//{
// if (PageValidate.IsIP(ip))
// {
// return ip;
// }
// else
// {
// return "-1";
// }
//}
#endregion
#region 检查设置的端口号是否正确，返回正确的端口号
/// <summary>
/// 检查设置的端口号是否正确，并返回正确的端口号,无效端口号返回-1。
/// </summary>
/// <param name="port">设置的端口号</param>
public static int GetValidPort(string port)
{
//声明返回的正确端口号
int validPort = -1;
//最小有效端口号
const int MINPORT = 0;
//最大有效端口号
const int MAXPORT = 65535;
//检测端口号
try
{
//传入的端口号为空则抛出异常
if (port == "")
{
throw new Exception("端口号不能为空！");
}
//检测端口范围
if ((Convert.ToInt32(port) < MINPORT) || (Convert.ToInt32(port) > MAXPORT))
{
throw new Exception("端口号范围无效！");
}
//为端口号赋值
validPort = Convert.ToInt32(port);
}
catch (Exception ex)
{
string errMessage = ex.Message;
}
return validPort;
}
#endregion
#region 将字符串形式的IP地址转换成IPAddress对象
/// <summary>
/// 将字符串形式的IP地址转换成IPAddress对象
/// </summary>
/// <param name="ip">字符串形式的IP地址</param>
public static IPAddress StringToIPAddress(string ip)
{
return IPAddress.Parse(ip);
}
#endregion
#region 获取本机的计算机名
/// <summary>
/// 获取本机的计算机名
/// </summary>
public static string LocalHostName
{
get
{
return Dns.GetHostName();
}
}
#endregion
#region 获取本机的局域网IP
/// <summary>
/// 获取本机的局域网IP
/// </summary>
public static string LANIP
{
get
{
//获取本机的IP列表,IP列表中的第一项是局域网IP，第二项是广域网IP
IPAddress[] addressList = Dns.GetHostEntry(Dns.GetHostName()).AddressList;
//如果本机IP列表为空，则返回空字符串
if (addressList.Length < 1)
{
return "";
}
//返回本机的局域网IP
return addressList[0].ToString();
}
}
#endregion
#region 获取本机在Internet网络的广域网IP
/// <summary>
/// 获取本机在Internet网络的广域网IP
/// </summary>
public static string WANIP
{
get
{
//获取本机的IP列表,IP列表中的第一项是局域网IP，第二项是广域网IP
IPAddress[] addressList = Dns.GetHostEntry(Dns.GetHostName()).AddressList;
//如果本机IP列表小于2，则返回空字符串
if (addressList.Length < 2)
{
return "";
}
//返回本机的广域网IP
return addressList[1].ToString();
}
}
#endregion
#region 获取远程客户机的IP地址
/// <summary>
/// 获取远程客户机的IP地址
/// </summary>
/// <param name="clientSocket">客户端的socket对象</param>
public static string GetClientIP(Socket clientSocket)
{
IPEndPoint client = (IPEndPoint)clientSocket.RemoteEndPoint;
return client.Address.ToString();
}
#endregion
#region 创建一个IPEndPoint对象
/// <summary>
/// 创建一个IPEndPoint对象
/// </summary>
/// <param name="ip">IP地址</param>
/// <param name="port">端口号</param>
public static IPEndPoint CreateIPEndPoint(string ip, int port)
{
IPAddress ipAddress = StringToIPAddress(ip);
return new IPEndPoint(ipAddress, port);
}
#endregion
#region 创建一个TcpListener对象
/// <summary>
/// 创建一个自动分配IP和端口的TcpListener对象
/// </summary>
public static TcpListener CreateTcpListener()
{
//创建一个自动分配的网络节点
IPAddress ipAddress = IPAddress.Any;
IPEndPoint localEndPoint = new IPEndPoint(ipAddress, 0);
return new TcpListener(localEndPoint);
}
/// <summary>
/// 创建一个TcpListener对象
/// </summary>
/// <param name="ip">IP地址</param>
/// <param name="port">端口</param>
public static TcpListener CreateTcpListener(string ip, int port)
{
//创建一个网络节点
IPAddress ipAddress = StringToIPAddress(ip);
IPEndPoint localEndPoint = new IPEndPoint(ipAddress, port);
return new TcpListener(localEndPoint);
}
#endregion
#region 创建一个基于TCP协议的Socket对象
/// <summary>
/// 创建一个基于TCP协议的Socket对象
/// </summary>
public static Socket CreateTcpSocket()
{
return new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
}
#endregion
#region 创建一个基于UDP协议的Socket对象
/// <summary>
/// 创建一个基于UDP协议的Socket对象
/// </summary>
public static Socket CreateUdpSocket()
{
return new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp);
}
#endregion
#region 获取本地终结点
#region 获取TcpListener对象的本地终结点
/// <summary>
/// 获取TcpListener对象的本地终结点
/// </summary>
/// <param name="tcpListener">TcpListener对象</param>
public static IPEndPoint GetLocalPoint(TcpListener tcpListener)
{
return (IPEndPoint)tcpListener.LocalEndpoint;
}
/// <summary>
/// 获取TcpListener对象的本地终结点的IP地址
/// </summary>
/// <param name="tcpListener">TcpListener对象</param>
public static string GetLocalPoint_IP(TcpListener tcpListener)
{
IPEndPoint localEndPoint = (IPEndPoint)tcpListener.LocalEndpoint;
return localEndPoint.Address.ToString();
}
/// <summary>
/// 获取TcpListener对象的本地终结点的端口号
/// </summary>
/// <param name="tcpListener">TcpListener对象</param>
public static int GetLocalPoint_Port(TcpListener tcpListener)
{
IPEndPoint localEndPoint = (IPEndPoint)tcpListener.LocalEndpoint;
return localEndPoint.Port;
}
#endregion
#region 获取Socket对象的本地终结点
/// <summary>
/// 获取Socket对象的本地终结点
/// </summary>
/// <param name="socket">Socket对象</param>
public static IPEndPoint GetLocalPoint(Socket socket)
{
return (IPEndPoint)socket.LocalEndPoint;
}
/// <summary>
/// 获取Socket对象的本地终结点的IP地址
/// </summary>
/// <param name="socket">Socket对象</param>
public static string GetLocalPoint_IP(Socket socket)
{
IPEndPoint localEndPoint = (IPEndPoint)socket.LocalEndPoint;
return localEndPoint.Address.ToString();
}
/// <summary>
/// 获取Socket对象的本地终结点的端口号
/// </summary>
/// <param name="socket">Socket对象</param>
public static int GetLocalPoint_Port(Socket socket)
{
IPEndPoint localEndPoint = (IPEndPoint)socket.LocalEndPoint;
return localEndPoint.Port;
}
#endregion
#endregion
#region 绑定终结点
/// <summary>
/// 绑定终结点
/// </summary>
/// <param name="socket">Socket对象</param>
/// <param name="endPoint">要绑定的终结点</param>
public static void BindEndPoint(Socket socket, IPEndPoint endPoint)
{
if (!socket.IsBound)
{
socket.Bind(endPoint);
}
}
/// <summary>
/// 绑定终结点
/// </summary>
/// <param name="socket">Socket对象</param>
/// <param name="ip">服务器IP地址</param>
/// <param name="port">服务器端口</param>
public static void BindEndPoint(Socket socket, string ip, int port)
{
//创建终结点
IPEndPoint endPoint = CreateIPEndPoint(ip, port);
//绑定终结点
if (!socket.IsBound)
{
socket.Bind(endPoint);
}
}
#endregion
#region 指定Socket对象执行监听
/// <summary>
/// 指定Socket对象执行监听，默认允许的最大挂起连接数为100
/// </summary>
/// <param name="socket">执行监听的Socket对象</param>
/// <param name="port">监听的端口号</param>
public static void StartListen(Socket socket, int port)
{
//创建本地终结点
IPEndPoint localPoint = CreateIPEndPoint(NetHelper.LocalHostName, port);
//绑定到本地终结点
BindEndPoint(socket, localPoint);
//开始监听
socket.Listen(100);
}
/// <summary>
/// 指定Socket对象执行监听
/// </summary>
/// <param name="socket">执行监听的Socket对象</param>
/// <param name="port">监听的端口号</param>
/// <param name="maxConnection">允许的最大挂起连接数</param>
public static void StartListen(Socket socket, int port, int maxConnection)
{
//创建本地终结点
IPEndPoint localPoint = CreateIPEndPoint(NetHelper.LocalHostName, port);
//绑定到本地终结点
BindEndPoint(socket, localPoint);
//开始监听
socket.Listen(maxConnection);
}
/// <summary>
/// 指定Socket对象执行监听
/// </summary>
/// <param name="socket">执行监听的Socket对象</param>
/// <param name="ip">监听的IP地址</param>
/// <param name="port">监听的端口号</param>
/// <param name="maxConnection">允许的最大挂起连接数</param>
public static void StartListen(Socket socket, string ip, int port, int maxConnection)
{
//绑定到本地终结点
BindEndPoint(socket, ip, port);
//开始监听
socket.Listen(maxConnection);
}
#endregion
#region 连接到基于TCP协议的服务器
/// <summary>
/// 连接到基于TCP协议的服务器,连接成功返回true，否则返回false
/// </summary>
/// <param name="socket">Socket对象</param>
/// <param name="ip">服务器IP地址</param>
/// <param name="port">服务器端口号</param>
public static bool Connect(Socket socket, string ip, int port)
{
try
{
//连接服务器
socket.Connect(ip, port);
//检测连接状态
return socket.Poll(-1, SelectMode.SelectWrite);
}
catch (SocketException ex)
{
throw new Exception(ex.Message);
//LogHelper.WriteTraceLog(TraceLogLevel.Error, ex.Message);
}
}
#endregion
#region 以同步方式发送消息
/// <summary>
/// 以同步方式向指定的Socket对象发送消息
/// </summary>
/// <param name="socket">socket对象</param>
/// <param name="msg">发送的消息</param>
public static void SendMsg(Socket socket, byte[] msg)
{
//发送消息
socket.Send(msg, msg.Length, SocketFlags.None);
}
/// <summary>
/// 使用UTF8编码格式以同步方式向指定的Socket对象发送消息
/// </summary>
/// <param name="socket">socket对象</param>
/// <param name="msg">发送的消息</param>
public static void SendMsg(Socket socket, string msg)
{
//将字符串消息转换成字符数组
byte[] buffer = ConvertHelper.StringToBytes(msg, Encoding.Default);
//发送消息
socket.Send(buffer, buffer.Length, SocketFlags.None);
}
#endregion
#region 以同步方式接收消息
/// <summary>
/// 以同步方式接收消息
/// </summary>
/// <param name="socket">socket对象</param>
/// <param name="buffer">接收消息的缓冲区</param>
public static void ReceiveMsg(Socket socket, byte[] buffer)
{
socket.Receive(buffer);
}
/// <summary>
/// 以同步方式接收消息，并转换为UTF8编码格式的字符串,使用5000字节的默认缓冲区接收。
/// </summary>
/// <param name="socket">socket对象</param>
public static string ReceiveMsg(Socket socket)
{
//定义接收缓冲区
byte[] buffer = new byte[5000];
//接收数据，获取接收到的字节数
int receiveCount = socket.Receive(buffer);
//定义临时缓冲区
byte[] tempBuffer = new byte[receiveCount];
//将接收到的数据写入临时缓冲区
Buffer.BlockCopy(buffer, 0, tempBuffer, 0, receiveCount);
//转换成字符串，并将其返回
return ConvertHelper.BytesToString(tempBuffer, Encoding.Default);
}
#endregion
#region 关闭基于Tcp协议的Socket对象
/// <summary>
/// 关闭基于Tcp协议的Socket对象
/// </summary>
/// <param name="socket">要关闭的Socket对象</param>
public static void Close(Socket socket)
{
try
{
//禁止Socket对象接收和发送数据
socket.Shutdown(SocketShutdown.Both);
}
catch (SocketException ex)
{
throw ex;
}
finally
{
//关闭Socket对象
socket.Close();
}
}
#endregion
#region 发送电子邮件
/// <summary>
/// 发送电子邮件,所有SMTP配置信息均在config配置文件中system.net节设置.
/// </summary>
/// <param name="receiveEmail">接收电子邮件的地址</param>
/// <param name="msgSubject">电子邮件的标题</param>
/// <param name="msgBody">电子邮件的正文</param>
/// <param name="IsEnableSSL">是否开启SSL</param>
public static bool SendEmail(string receiveEmail, string msgSubject, string msgBody, bool IsEnableSSL)
{
//创建电子邮件对象
MailMessage email = new MailMessage();
//设置接收人的电子邮件地址
email.To.Add(receiveEmail);
//设置邮件的标题
email.Subject = msgSubject;
//设置邮件的正文
email.Body = msgBody;
//设置邮件为HTML格式
email.IsBodyHtml = true;
//创建SMTP客户端，将自动从配置文件中获取SMTP服务器信息
SmtpClient smtp = new SmtpClient();
//开启SSL
smtp.EnableSsl = IsEnableSSL;
try
{
//发送电子邮件
smtp.Send(email);
return true;
}
catch (Exception ex)
{
throw ex;
}
}
#endregion
}
9、序列化操作及调用 实例
#region 序列化 public class Serialize { /// <summary> /// 序列化为对象 /// </summary> /// <param name="objname"></param> /// <param name="obj"></param> public static void BinarySerialize(string objname,object obj) { try { string filename = objname + ".Binary"; if(System.IO.File.Exists(filename)) System.IO.File.Delete(filename); using (FileStream fileStream = new FileStream(filename, FileMode.Create)) { // 用二进制格式序列化 BinaryFormatter binaryFormatter = new BinaryFormatter(); binaryFormatter.Serialize(fileStream, obj); fileStream.Close(); } } catch(Exception ex) { throw new Exception(ex.Message); } } /// <summary> /// 从二进制文件中反序列化 /// </summary> /// <param name="objname"></param> /// <returns></returns> public static object BinaryDeserialize(string objname) { System.Runtime.Serialization.IFormatter formatter = new BinaryFormatter(); //二进制格式反序列化 object obj; string filename = objname + ".Binary"; if(!System.IO.File.Exists(filename)) throw new Exception("在反序列化之前,请先序列化"); using (Stream stream = new FileStream(filename, FileMode.Open, FileAccess.Read, FileShare.Read)) { obj = formatter.Deserialize(stream); stream.Close(); } //using (FileStream fs = new FileStream(filename, FileMode.Open)) //{ // BinaryFormatter formatter = new BinaryFormatter(); // object obj = formatter.Deserialize(fs); //} return obj; } /// <summary> /// 序列化为soap 即xml /// </summary> /// <param name="objname"></param> /// <returns></returns> public static void SoapSerialize(string objname,object obj) { try { string filename=objname+".Soap"; if(System.IO.File.Exists(filename)) System.IO.File.Delete(filename); using (FileStream fileStream = new FileStream(filename, FileMode.Create)) { // 序列化为Soap SoapFormatter formatter = new SoapFormatter(); formatter.Serialize(fileStream, obj); fileStream.Close(); } } catch(Exception ex) { throw new Exception(ex.Message); } } /// <summary> /// 反序列对象 /// </summary> /// <param name="objname"></param> public static object SoapDeserialize(string objname) { object obj; System.Runtime.Serialization.IFormatter formatter = new SoapFormatter(); string filename=objname+".Soap"; if (!System.IO.File.Exists(filename)) throw new Exception("对反序列化之前,请先序列化"); //Soap格式反序列化 using (Stream stream = new FileStream(filename, FileMode.Open, FileAccess.Read, FileShare.Read)) { obj = formatter.Deserialize(stream); stream.Close(); } return obj; } public static void XmlSerialize(string objname,object obj) { try { string filename=objname+".xml"; if(System.IO.File.Exists(filename)) System.IO.File.Delete(filename); using (FileStream fileStream = new FileStream(filename, FileMode.Create)) { // 序列化为xml XmlSerializer formatter = new XmlSerializer(typeof(Car)); formatter.Serialize(fileStream, obj); fileStream.Close(); } } catch(Exception ex) { throw new Exception(ex.Message); } } /// <summary> /// 从xml序列中反序列化 /// </summary> /// <param name="objname"></param> /// <returns></returns> public static object XmlDeserailize(string objname) { // System.Runtime.Serialization.IFormatter formatter = new XmlSerializer(typeof(Car)); string filename=objname+".xml"; object obj; if (!System.IO.File.Exists(filename)) throw new Exception("对反序列化之前,请先序列化"); //Xml格式反序列化 using (Stream stream = new FileStream(filename, FileMode.Open, FileAccess.Read, FileShare.Read)) { XmlSerializer formatter = new XmlSerializer(typeof(Car)); obj = (Car)formatter.Deserialize(stream); stream.Close(); } return obj; } } #endregion #region 要序列化的类 [Serializable] public class Car { private string _Price; private string _Owner; private string m_filename; [XmlElement(ElementName = "Price")] public string Price { get { return this._Price; } set { this._Price = value; } } [XmlElement(ElementName = "Owner")] public string Owner { get { return this._Owner; } set { this._Owner = value; } } public string Filename { get { return m_filename; } set { m_filename = value; } } public Car(string o, string p) { this.Price = p; this.Owner = o; } public Car() { } } #endregion #region 调用示例 public class Demo { public void DemoFunction() { //序列化 Car car = new Car("chenlin", "120万"); Serialize.BinarySerialize("Binary序列化", car); Serialize.SoapSerialize("Soap序列化", car); Serialize.XmlSerialize("XML序列化", car); //反序列化 Car car2 = (Car)Serialize.BinaryDeserialize("Binary序列化"); car2 = (Car)Serialize.SoapDeserialize("Soap序列化"); car2 = (Car)Serialize.XmlDeserailize("XML序列化"); } } #endregion
10、验证码操作，图片和数字
/// <summary> /// 验证码类 /// </summary> public class Rand { #region 生成随机数字 /// <summary> /// 生成随机数字 /// </summary> /// <param name="length">生成长度</param> public static string Number(int Length) { return Number(Length, false); } /// <summary> /// 生成随机数字 /// </summary> /// <param name="Length">生成长度</param> /// <param name="Sleep">是否要在生成前将当前线程阻止以避免重复</param> public static string Number(int Length, bool Sleep) { if (Sleep) System.Threading.Thread.Sleep(3); string result = ""; System.Random random = new Random(); for (int i = 0; i < Length; i++) { result += random.Next(10).ToString(); } return result; } #endregion #region 生成随机字母与数字 /// <summary> /// 生成随机字母与数字 /// </summary> /// <param name="IntStr">生成长度</param> public static string Str(int Length) { return Str(Length, false); } /// <summary> /// 生成随机字母与数字 /// </summary> /// <param name="Length">生成长度</param> /// <param name="Sleep">是否要在生成前将当前线程阻止以避免重复</param> public static string Str(int Length, bool Sleep) { if (Sleep) System.Threading.Thread.Sleep(3); char[] Pattern = new char[] { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z' }; string result = ""; int n = Pattern.Length; System.Random random = new Random(~unchecked((int)DateTime.Now.Ticks)); for (int i = 0; i < Length; i++) { int rnd = random.Next(0, n); result += Pattern[rnd]; } return result; } #endregion #region 生成随机纯字母随机数 /// <summary> /// 生成随机纯字母随机数 /// </summary> /// <param name="IntStr">生成长度</param> public static string Str_char(int Length) { return Str_char(Length, false); } /// <summary> /// 生成随机纯字母随机数 /// </summary> /// <param name="Length">生成长度</param> /// <param name="Sleep">是否要在生成前将当前线程阻止以避免重复</param> public static string Str_char(int Length, bool Sleep) { if (Sleep) System.Threading.Thread.Sleep(3); char[] Pattern = new char[] { 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z' }; string result = ""; int n = Pattern.Length; System.Random random = new Random(~unchecked((int)DateTime.Now.Ticks)); for (int i = 0; i < Length; i++) { int rnd = random.Next(0, n); result += Pattern[rnd]; } return result; } #endregion } /// <summary> /// 验证图片类 /// </summary> public class YZMHelper { #region 私有字段 private string text; private Bitmap image; private int letterCount = 4; //验证码位数 private int letterWidth = 16; //单个字体的宽度范围 private int letterHeight = 20; //单个字体的高度范围 private static byte[] randb = new byte[4]; private static RNGCryptoServiceProvider rand = new RNGCryptoServiceProvider(); private Font[] fonts = { new Font(new FontFamily("Times New Roman"),10 +Next(1),System.Drawing.FontStyle.Regular), new Font(new FontFamily("Georgia"), 10 + Next(1),System.Drawing.FontStyle.Regular), new Font(new FontFamily("Arial"), 10 + Next(1),System.Drawing.FontStyle.Regular), new Font(new FontFamily("Comic Sans MS"), 10 + Next(1),System.Drawing.FontStyle.Regular) }; #endregion #region 公有属性 /// <summary> /// 验证码 /// </summary> public string Text { get { return this.text; } } /// <summary> /// 验证码图片 /// </summary> public Bitmap Image { get { return this.image; } } #endregion #region 构造函数 public YZMHelper() { HttpContext.Current.Response.Expires = 0; HttpContext.Current.Response.Buffer = true; HttpContext.Current.Response.ExpiresAbsolute = DateTime.Now.AddSeconds(-1); HttpContext.Current.Response.AddHeader("pragma", "no-cache"); HttpContext.Current.Response.CacheControl = "no-cache"; this.text = Rand.Number(4); CreateImage(); } #endregion #region 私有方法 /// <summary> /// 获得下一个随机数 /// </summary> /// <param name="max">最大值</param> private static int Next(int max) { rand.GetBytes(randb); int value = BitConverter.ToInt32(randb, 0); value = value % (max + 1); if (value < 0) value = -value; return value; } /// <summary> /// 获得下一个随机数 /// </summary> /// <param name="min">最小值</param> /// <param name="max">最大值</param> private static int Next(int min, int max) { int value = Next(max - min) + min; return value; } #endregion #region 公共方法 /// <summary> /// 绘制验证码 /// </summary> public void CreateImage() { int int_ImageWidth = this.text.Length * letterWidth; Bitmap image = new Bitmap(int_ImageWidth, letterHeight); Graphics g = Graphics.FromImage(image); g.Clear(Color.White); for (int i = 0; i < 2; i++) { int x1 = Next(image.Width - 1); int x2 = Next(image.Width - 1); int y1 = Next(image.Height - 1); int y2 = Next(image.Height - 1); g.DrawLine(new Pen(Color.Silver), x1, y1, x2, y2); } int _x = -12, _y = 0; for (int int_index = 0; int_index < this.text.Length; int_index++) { _x += Next(12, 16); _y = Next(-2, 2); string str_char = this.text.Substring(int_index, 1); str_char = Next(1) == 1 ? str_char.ToLower() : str_char.ToUpper(); Brush newBrush = new SolidBrush(GetRandomColor()); Point thePos = new Point(_x, _y); g.DrawString(str_char, fonts[Next(fonts.Length - 1)], newBrush, thePos); } for (int i = 0; i < 10; i++) { int x = Next(image.Width - 1); int y = Next(image.Height - 1); image.SetPixel(x, y, Color.FromArgb(Next(0, 255), Next(0, 255), Next(0, 255))); } image = TwistImage(image, true, Next(1, 3), Next(4, 6)); g.DrawRectangle(new Pen(Color.LightGray, 1), 0, 0, int_ImageWidth - 1, (letterHeight - 1)); this.image = image; } /// <summary> /// 字体随机颜色 /// </summary> public Color GetRandomColor() { Random RandomNum_First = new Random((int)DateTime.Now.Ticks); System.Threading.Thread.Sleep(RandomNum_First.Next(50)); Random RandomNum_Sencond = new Random((int)DateTime.Now.Ticks); int int_Red = RandomNum_First.Next(180); int int_Green = RandomNum_Sencond.Next(180); int int_Blue = (int_Red + int_Green > 300) ? 0 : 400 - int_Red - int_Green; int_Blue = (int_Blue > 255) ? 255 : int_Blue; return Color.FromArgb(int_Red, int_Green, int_Blue); } /// <summary> /// 正弦曲线Wave扭曲图片 /// </summary> /// <param name="srcBmp">图片路径</param> /// <param name="bXDir">如果扭曲则选择为True</param> /// <param name="nMultValue">波形的幅度倍数，越大扭曲的程度越高,一般为3</param> /// <param name="dPhase">波形的起始相位,取值区间[0-2*PI)</param> public System.Drawing.Bitmap TwistImage(Bitmap srcBmp, bool bXDir, double dMultValue, double dPhase) { double PI = 6.283185307179586476925286766559; Bitmap destBmp = new Bitmap(srcBmp.Width, srcBmp.Height); Graphics graph = Graphics.FromImage(destBmp); graph.FillRectangle(new SolidBrush(Color.White), 0, 0, destBmp.Width, destBmp.Height); graph.Dispose(); double dBaseAxisLen = bXDir ? (double)destBmp.Height : (double)destBmp.Width; for (int i = 0; i < destBmp.Width; i++) { for (int j = 0; j < destBmp.Height; j++) { double dx = 0; dx = bXDir ? (PI * (double)j) / dBaseAxisLen : (PI * (double)i) / dBaseAxisLen; dx += dPhase; double dy = Math.Sin(dx); int nOldX = 0, nOldY = 0; nOldX = bXDir ? i + (int)(dy * dMultValue) : i; nOldY = bXDir ? j : j + (int)(dy * dMultValue); Color color = srcBmp.GetPixel(i, j); if (nOldX >= 0 && nOldX < destBmp.Width && nOldY >= 0 && nOldY < destBmp.Height) { destBmp.SetPixel(nOldX, nOldY, color); } } } srcBmp.Dispose(); return destBmp; } #endregion }
11、系统操作相关的公共类
/// <summary> /// 系统操作相关的公共类 /// </summary> public static class SysHelper { #region 获取文件相对路径映射的物理路径 /// <summary> /// 获取文件相对路径映射的物理路径 /// </summary> /// <param name="virtualPath">文件的相对路径</param> public static string GetPath(string virtualPath) { return HttpContext.Current.Server.MapPath(virtualPath); } #endregion #region 获取指定调用层级的方法名 /// <summary> /// 获取指定调用层级的方法名 /// </summary> /// <param name="level">调用的层数</param> public static string GetMethodName(int level) { //创建一个堆栈跟踪 StackTrace trace = new StackTrace(); //获取指定调用层级的方法名 return trace.GetFrame(level).GetMethod().Name; } #endregion #region 获取GUID值 /// <summary> /// 获取GUID值 /// </summary> public static string NewGUID { get { return Guid.NewGuid().ToString(); } } #endregion #region 获取换行字符 /// <summary> /// 获取换行字符 /// </summary> public static string NewLine { get { return Environment.NewLine; } } #endregion #region 获取当前应用程序域 /// <summary> /// 获取当前应用程序域 /// </summary> public static AppDomain CurrentAppDomain { get { return Thread.GetDomain(); } } #endregion }
12、处理数据类型转换，数制转换、编码转换相关的类
/// <summary> /// 处理数据类型转换，数制转换、编码转换相关的类 /// </summary> public sealed class ConvertHelper { #region 补足位数 /// <summary> /// 指定字符串的固定长度，如果字符串小于固定长度， /// 则在字符串的前面补足零，可设置的固定长度最大为9位 /// </summary> /// <param name="text">原始字符串</param> /// <param name="limitedLength">字符串的固定长度</param> public static string RepairZero(string text, int limitedLength) { //补足0的字符串 string temp = ""; //补足0 for (int i = 0; i < limitedLength - text.Length; i++) { temp += "0"; } //连接text temp += text; //返回补足0的字符串 return temp; } #endregion #region 各进制数间转换 /// <summary> /// 实现各进制数间的转换。ConvertBase("15",10,16)表示将十进制数15转换为16进制的数。 /// </summary> /// <param name="value">要转换的值,即原值</param> /// <param name="from">原值的进制,只能是2,8,10,16四个值。</param> /// <param name="to">要转换到的目标进制，只能是2,8,10,16四个值。</param> public static string ConvertBase(string value, int from, int to) { try { int intValue = Convert.ToInt32(value, from); //先转成10进制 string result = Convert.ToString(intValue, to); //再转成目标进制 if (to == 2) { int resultLength = result.Length; //获取二进制的长度 switch (resultLength) { case 7: result = "0" + result; break; case 6: result = "00" + result; break; case 5: result = "000" + result; break; case 4: result = "0000" + result; break; case 3: result = "00000" + result; break; } } return result; } catch { //LogHelper.WriteTraceLog(TraceLogLevel.Error, ex.Message); return "0"; } } #endregion #region 使用指定字符集将string转换成byte[] /// <summary> /// 使用指定字符集将string转换成byte[] /// </summary> /// <param name="text">要转换的字符串</param> /// <param name="encoding">字符编码</param> public static byte[] StringToBytes(string text, Encoding encoding) { return encoding.GetBytes(text); } #endregion #region 使用指定字符集将byte[]转换成string /// <summary> /// 使用指定字符集将byte[]转换成string /// </summary> /// <param name="bytes">要转换的字节数组</param> /// <param name="encoding">字符编码</param> public static string BytesToString(byte[] bytes, Encoding encoding) { return encoding.GetString(bytes); } #endregion #region 将byte[]转换成int /// <summary> /// 将byte[]转换成int /// </summary> /// <param name="data">需要转换成整数的byte数组</param> public static int BytesToInt32(byte[] data) { //如果传入的字节数组长度小于4,则返回0 if (data.Length < 4) { return 0; } //定义要返回的整数 int num = 0; //如果传入的字节数组长度大于4,需要进行处理 if (data.Length >= 4) { //创建一个临时缓冲区 byte[] tempBuffer = new byte[4]; //将传入的字节数组的前4个字节复制到临时缓冲区 Buffer.BlockCopy(data, 0, tempBuffer, 0, 4); //将临时缓冲区的值转换成整数，并赋给num num = BitConverter.ToInt32(tempBuffer, 0); } //返回整数 return num; } #endregion }
