常用函数：
CommonHelper.cs
using System; using System.Collections.Generic; using System.IO; using System.Linq; using System.Security.Cryptography; using System.Text; using System.Threading.Tasks; using System.Web; using RazorEngine; using RazorEngine.Text; namespace DIDAO.Common { public class CommonHelper { /// <summary> /// 传入虚拟路径 返回全路径的html字符串 /// </summary> /// <param name="context">当前数据上下文</param> /// <param name="virtualPath">虚拟路径</param> /// <returns>返回全路径的html字符串</returns> public static string GetHtmlFromVirtualPath(HttpContext context,string virtualPath) { string fileFullPath = context.Server.MapPath(virtualPath); string html = File.ReadAllText(fileFullPath); return html; } /// <summary> /// 输出错误信息到错误界面 /// </summary> /// <param name="context">当前数据上下文</param> /// <param name="virtualPath">错误页面的 虚拟路径</param> /// <param name="errormsg">错误信息</param> public static void OutputError(HttpContext context, string virtualPath,string errormsg) { string htmlError = GetHtmlFromVirtualPath(context, virtualPath); string htmlNewError = htmlError.Replace("{errormsg}", errormsg); context.Response.Write(htmlNewError); } /// <summary> /// 加密 /// </summary> /// <param name="str">原始密码</param> /// <returns>加密密码</returns> public static string Md5Encode(string str) { byte[] bytes = System.Text.Encoding.Default.GetBytes(str); MD5 md5 = new MD5CryptoServiceProvider(); byte[] newBytes = md5.ComputeHash(bytes); string newStr = BitConverter.ToString(newBytes).Replace("-",""); return newStr; } /// <summary> /// 检查字符串 是否含有特殊字符 :含有-false /// </summary> /// <param name="str">输入字符串</param> /// <returns>是否含有特殊字符:含有-false</returns> public static bool CheckStringIsSpecialChar(string str) { bool flag = true; char[] chs = { ',', '/', '\\', '\'', '"' }; foreach (char ch in chs) { if (str.IndexOf(ch) >= 0) { flag = false; } } return flag; } //DES NET加密解密 public static string _KEY = "YANGGUO1"; //密钥 public static string _IV = "YANGGUO2"; //向量 /// <summary> /// 加密 /// </summary> /// <param name="data"></param> /// <returns></returns> public static string DesEncode(string data) { byte[] byKey = System.Text.ASCIIEncoding.ASCII.GetBytes(_KEY); byte[] byIV = System.Text.ASCIIEncoding.ASCII.GetBytes(_IV); DESCryptoServiceProvider cryptoProvider = new DESCryptoServiceProvider(); int i = cryptoProvider.KeySize; MemoryStream ms = new MemoryStream(); CryptoStream cst = new CryptoStream(ms, cryptoProvider.CreateEncryptor(byKey, byIV), CryptoStreamMode.Write); StreamWriter sw = new StreamWriter(cst); sw.Write(data); sw.Flush(); cst.FlushFinalBlock(); sw.Flush(); string strRet = Convert.ToBase64String(ms.GetBuffer(), 0, (int)ms.Length); return strRet; } /// <summary> /// 解密 /// </summary> /// <param name="data"></param> /// <returns></returns> public static string DesDecode(string data) { byte[] byKey = System.Text.ASCIIEncoding.ASCII.GetBytes(_KEY); byte[] byIV = System.Text.ASCIIEncoding.ASCII.GetBytes(_IV); byte[] byEnc; try { data.Replace("_%_", "/"); data.Replace("-%-", "#"); byEnc = Convert.FromBase64String(data); } catch { return null; } DESCryptoServiceProvider cryptoProvider = new DESCryptoServiceProvider(); MemoryStream ms = new MemoryStream(byEnc); CryptoStream cst = new CryptoStream(ms, cryptoProvider.CreateDecryptor(byKey, byIV), CryptoStreamMode.Read); StreamReader sr = new StreamReader(cst); return sr.ReadToEnd(); } } }
有关Razor引擎进行cshtml页面解析的函数：
RazorHelper.cs
using System; using System.Collections; using System.Collections.Generic; using System.IO; using System.Linq; using System.Reflection; using System.Text; using System.Threading.Tasks; using System.Web; using RazorEngine; using RazorEngine.Text; namespace DIDAO.Common { public class RazorHelper { /// <summary> /// Razor解析cshtml页面，并输出到浏览器 /// </summary> /// <param name="context">上下文</param> /// <param name="cshtmlVirtualPath">cshtml页面的虚拟路径</param> /// <param name="model">传递的虚拟实例，可不传</param> public static void RazorParse(HttpContext context, string cshtmlVirtualPath, object model=null) { string fullPath = context.Server.MapPath(cshtmlVirtualPath); string cshtml = File.ReadAllText(fullPath); string cacheName = fullPath + File.GetLastWriteTime(fullPath); string html = Razor.Parse(cshtml, model, cacheName); context.Response.Write(html); } /// <summary> /// 对html进行加密 /// </summary> /// <param name="htmlStr">html标签</param> /// <returns>加密之后的字符串</returns> public static HtmlEncodedString HtmlEncodedString(string htmlStr) { return new HtmlEncodedString(htmlStr); } /// <summary> /// 对html原样显示 /// </summary> /// <param name="htmlStr">html标签</param> /// <returns>html原来样子</returns> public static RawString RawString(string htmlStr) { return new RawString(htmlStr); } /// <summary> /// 拼接生成CheckBox 标签 /// </summary> /// <param name="isCheck">是否选中</param> /// <param name="extendProperties">扩展属性的对象：比如，new {id='managerId',name='manager',style='color:red' }</param> /// <returns>CheckBox标签</returns> public static RawString CheckBox(bool isCheck, object extendProperties) { StringBuilder sb = new StringBuilder(); sb.Append("<input type='checkbox' "); sb.Append(RenderExtProperties(extendProperties)); if (isCheck) { sb.Append(" checked "); } sb.AppendLine(" />"); return new RawString(sb.ToString()); } /// <summary> /// 拼接扩展属性 及对应的值 /// </summary> /// <param name="extendProperties">扩展属性 所在的匿名实例</param> /// <returns>拼接生成的 包含属性名和值 的字符串： 比如，“ name='manager' id='managerId' ” </returns> private static string RenderExtProperties(object extendProperties) { StringBuilder sb = new StringBuilder(); #region 拼接扩展属性 Type extType = extendProperties.GetType(); PropertyInfo[] props = extType.GetProperties(); foreach (PropertyInfo prop in props) { string extPropName = prop.Name; object extPropValue = prop.GetValue(extendProperties); sb.Append(" ").Append(extPropName).Append("='").Append(extPropValue).Append("' "); } #endregion return sb.ToString(); } /// <summary> /// 拼接生成DropDownList下拉列表 标签 /// </summary> /// <param name="list">实例的集合</param> /// <param name="valuePropName">实际的值属性的名称：比如，Id</param> /// <param name="textPropName">显示的文本属性的名称：比如，Name</param> /// <param name="selectedValue">选中的值</param> /// <param name="extendProperties">扩展属性的对象：比如，new {id='managerId',name='manager',style='color:red' }</param> /// <returns>DropDownList下拉列表 标签</returns> public static RawString DropDownList(IEnumerable list, string valuePropName, string textPropName, object selectedValue, object extendProperties) { //<select name='' id='' > //<option value=''> </option> //</select> StringBuilder sb = new StringBuilder(); sb.Append("<select "); #region 拼接扩展属性 sb.Append(RenderExtProperties(extendProperties)); #endregion sb.AppendLine(" >"); #region 拼接下拉选项 foreach (object item in list) { object valuePropValue, textPropValue; GetvalueAndTextPropValue(item, valuePropName, textPropName, out valuePropValue, out textPropValue); sb.Append("<option value='").Append(valuePropValue).Append("' "); if (object.Equals(valuePropValue, selectedValue)) //如果当前值与选中的值相等，则selected （引用类型用equal，如果用=则是不同的实例，因为发生过装箱） { sb.Append(" selected "); } sb.Append(">").Append(textPropValue).AppendLine(" </option> "); } #endregion sb.AppendLine("</select>"); return new RawString(sb.ToString()); } /// <summary> /// 拼接生成RadioButtonList 标签 /// </summary> /// <param name="list">实例的集合</param> /// <param name="valuePropName">实际的值属性的名称：比如，Id</param> /// <param name="textPropName">显示的文本属性的名称：比如，Name</param> /// <param name="selectedValue">选中的值</param> // <param name="extendProperties">扩展属性的对象：比如，new {name='gender',style='color:red' }</param> /// <returns>RadioButtonList 标签</returns> public static RawString RadioButtonList(IEnumerable list, string valuePropName, string textPropName, object selectedValue, object extendProperties) { //<input type="radio" name="gender" value="1" checked /><label>男</label><br /> //只能单选 StringBuilder sb = new StringBuilder(); foreach (object item in list) { object valuePropValue, textPropValue; GetvalueAndTextPropValue(item, valuePropName, textPropName, out valuePropValue, out textPropValue); sb.Append("<input type=\"radio\" "); sb.Append(RenderExtProperties(extendProperties)); sb.Append(" value=\"").Append(valuePropValue).Append("\""); if (object.Equals(valuePropValue, selectedValue)) { sb.Append(" checked "); } sb.Append(" /><label>").Append(textPropValue).AppendLine("</label><br />"); } return new RawString(sb.ToString()); } /// <summary> /// 拼接生成CheckBoxList 标签 /// </summary> /// <param name="list">实例的集合</param> /// <param name="valuePropName">实际的值属性的名称：比如，Id</param> /// <param name="textPropName">显示的文本属性的名称：比如，Name</param> /// <param name="selectedValues">选中的值的数组</param> /// <param name="extendProperties">扩展属性的对象：比如，new {name='hobby',style='color:red' }</param> /// <returns>CheckBoxList 标签</returns> public static RawString CheckBoxList(IEnumerable list, string valuePropName, string textPropName, object[] selectedValues, object extendProperties) { //<input type="checkbox" name="hobby" value="1" checked /><label>足球</label><br /> //可多选 StringBuilder sb = new StringBuilder(); foreach (object item in list) { object valuePropValue, textPropValue; GetvalueAndTextPropValue(item, valuePropName, textPropName, out valuePropValue, out textPropValue); sb.Append("<input type=\"checkbox\" "); sb.Append(RenderExtProperties(extendProperties)); sb.Append(" value=\"").Append(valuePropValue).Append("\" "); if (selectedValues.Contains(valuePropValue)) { sb.Append(" checked "); } sb.Append(" /><label>").Append(textPropValue).AppendLine("</label><br />"); } return new RawString(sb.ToString()); } /// <summary> /// 根据指定实例的 值属性名和文本属性名 获得 值属性值和文本属性值 /// </summary> /// <param name="item">指定实例</param> /// <param name="valuePropName">值属性名</param> /// <param name="textPropName">文本属性名</param> /// <param name="valuePropValue">out 值属性值</param> /// <param name="textPropValue">out 文本属性值</param> private static void GetvalueAndTextPropValue(object item, string valuePropName, string textPropName, out object valuePropValue, out object textPropValue) { Type type = item.GetType(); PropertyInfo valueProp = type.GetProperty(valuePropName); valuePropValue = valueProp.GetValue(item); PropertyInfo textProp = type.GetProperty(textPropName); textPropValue = textProp.GetValue(item); } } }
有关Ajax异步请求的函数：
AjaxHelper.cs
using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Threading.Tasks; using System.Web; using System.Web.Script.Serialization; namespace DIDAO.Common { public class AjaxHelper { /// <summary> /// Ajax返回json数据 /// </summary> /// <param name="context">上下文</param> /// <param name="status">状态码：ok,error</param> /// <param name="msg">信息</param> /// <param name="data">数据:默认null</param> public static void WriteJson(HttpContext context,string status,string msg,object data=null) { string json = new JavaScriptSerializer().Serialize(new { status = status, msg = msg, data = data }); context.Response.Write(json); } } }
有关项目中变量类型的转换和验证：
VolidHelper.cs
using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Threading.Tasks; using System.Web; using System.Web.Script.Serialization; namespace DIDAO.Common { public class AjaxHelper { /// <summary> /// Ajax返回json数据 /// </summary> /// <param name="context">上下文</param> /// <param name="status">状态码：ok,error</param> /// <param name="msg">信息</param> /// <param name="data">数据:默认null</param> public static void WriteJson(HttpContext context,string status,string msg,object data=null) { string json = new JavaScriptSerializer().Serialize(new { status = status, msg = msg, data = data }); context.Response.Write(json); } } }
专门用于存储 常量/枚举 字符串的类：
using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Threading.Tasks; namespace DIDAO.Common { /// <summary> /// 存储常量/枚举 字符串 /// </summary> public class ConstStringHelper { /// <summary> /// admin session中的验证码 /// </summary> public const string ADMINSESSION_VALIDCODE = "AdminSession_ValidCode"; /// <summary> /// admin cookie中是否记忆密码 /// </summary> public const string ADMINCOOKIE_CHKMEMORYPWD = "AdminCookie_chkMemoryPwd"; /// <summary> /// admin cookie中是否自动登录 /// </summary> public const string ADMINCOOKIE_CHKAUTOLOGIN = "AdminCookie_chkAutoLogin"; /// <summary> /// admin cookie中用户名 /// </summary> public const string ADMINCOOKIE_USERNAME = "AdminCookie_UserName"; /// <summary> /// admin cookie中密码 /// </summary> public const string ADMINCOOKIE_PASSWORD = "AdminCookie_Password"; /// <summary> /// admin session中ID /// </summary> public const string ADMINSESSION_ID = "AdminSession_Id"; /// <summary> /// admin session中用户名 /// </summary> public const string ADMINSESSION_USERNAME = "AdminSession_UserName"; /// <summary> /// 枚举 登录状态 /// </summary> public enum LoginResult { OK, //登录成功 UserNameNotExist, //用户名不存在 PasswordError //密码错误 }; /// <summary> /// 枚举 自动登录状态 /// </summary> public enum AutoLoginResult { AutoLogin, //自动登录成功 MemoryPwd, //填充密码 NO //自动登录失败 }; } }
用于当前项目的类，实际起到BLL的作用：
using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Threading.Tasks; using System.Web; using DIDAO.BLL; using DIDAO.Common; using DIDAO.Model; namespace DIDAO.Admin.Common { public class LoginHelper { /// <summary> /// 判断验证码是否正确 /// </summary> /// <param name="context"></param> /// <param name="validCode">用户输入的验证码</param> /// <returns>验证码是否正确</returns> public static bool CheckValidCode(HttpContext context, string validCode) { string sessionValidCode = (string)context.Session[ConstStringHelper.ADMINSESSION_VALIDCODE]; return sessionValidCode == validCode; } /// <summary> /// 把用户名和密码 存入cookie /// </summary> /// <param name="context"></param> /// <param name="username"></param> /// <param name="password"></param> public static void StoreCookie(HttpContext context, string chkMemoryPwd, string chkAutoLogin, string username, string password) { context.Response.SetCookie(new HttpCookie(ConstStringHelper.ADMINCOOKIE_CHKMEMORYPWD) { Value = chkMemoryPwd, Expires = DateTime.Now.AddDays(7) }); context.Response.SetCookie(new HttpCookie(ConstStringHelper.ADMINCOOKIE_CHKAUTOLOGIN) { Value = chkAutoLogin, Expires = DateTime.Now.AddDays(7) }); context.Response.SetCookie(new HttpCookie(ConstStringHelper.ADMINCOOKIE_USERNAME) { Value = username, Expires = DateTime.Now.AddDays(7) }); context.Response.SetCookie(new HttpCookie(ConstStringHelper.ADMINCOOKIE_PASSWORD) { Value = CommonHelper.DesEncode(password), Expires = DateTime.Now.AddDays(7) }); } /// <summary> /// 把用户id和用户名 存入session /// </summary> /// <param name="context"></param> /// <param name="id"></param> /// <param name="username"></param> public static void StoreSession(HttpContext context,long id,string username) { context.Session[ConstStringHelper.ADMINSESSION_ID] = id; context.Session[ConstStringHelper.ADMINSESSION_USERNAME] = username; } /// <summary> /// 尝试自动登录 或填充密码 /// </summary> /// <param name="context"></param> /// <returns>自动登录后的状态：成功，填充密码，失败继续</returns> public static ConstStringHelper.AutoLoginResult TryAutoLoginOrMemoryPwd(HttpContext context,out string username,out string password) { username = ""; password = ""; //尝试自动登录 HttpCookie cookie_chkAutoLogin = context.Request.Cookies[ConstStringHelper.ADMINCOOKIE_CHKAUTOLOGIN]; if (cookie_chkAutoLogin!=null && cookie_chkAutoLogin.Value=="true") { HttpCookie cookie_username = context.Request.Cookies[ConstStringHelper.ADMINCOOKIE_USERNAME]; HttpCookie cookie_password = context.Request.Cookies[ConstStringHelper.ADMINCOOKIE_PASSWORD]; if (cookie_username != null && cookie_password!=null) { if (CheckLoginStatus(context, cookie_username.Value, CommonHelper.DesDecode(cookie_password.Value)) == ConstStringHelper.LoginResult.OK) { return ConstStringHelper.AutoLoginResult.AutoLogin; } } } //尝试填充密码 HttpCookie cookie_chkMemoryPwd = context.Request.Cookies[ConstStringHelper.ADMINCOOKIE_CHKMEMORYPWD]; if (cookie_chkMemoryPwd != null && cookie_chkMemoryPwd.Value == "true") { HttpCookie cookie_username = context.Request.Cookies[ConstStringHelper.ADMINCOOKIE_USERNAME]; HttpCookie cookie_password = context.Request.Cookies[ConstStringHelper.ADMINCOOKIE_PASSWORD]; if (cookie_username != null && cookie_password != null) { username = cookie_username.Value; password = CommonHelper.DesDecode(cookie_password.Value); return ConstStringHelper.AutoLoginResult.MemoryPwd; } } return ConstStringHelper.AutoLoginResult.NO; } /// <summary> /// 检查登录状态： ok 成功，UserNameNotExist 用户名不存在，PasswordError 密码错误 /// </summary> /// <param name="username"></param> /// <param name="password"></param> /// <returns>枚举： ok 成功，UserNameNotExist 用户名不存在，PasswordError 密码错误</returns> public static ConstStringHelper.LoginResult CheckLoginStatus(HttpContext context,string username,string password) { List<object> list = new MyORM_BLL().SelectModelByField(typeof(TD_ADMIN), "USERNAME='" + username + "'"); //需要先检验username是否有特殊字符 if (list.Count<=0) { return ConstStringHelper.LoginResult.UserNameNotExist; } else if (list.Count == 1) { TD_ADMIN admin = list[0] as TD_ADMIN; if (admin.PASSWORD != CommonHelper.Md5Encode(password)) { return ConstStringHelper.LoginResult.PasswordError; } else { StoreSession(context, admin.ID, username); //存入session return ConstStringHelper.LoginResult.OK; } } else { throw new Exception("数据库错误：用户名重复：" + username); } } } }
