c# 基础类
using WL.Infrastructure.Http;
using System;using System.Collections.Generic;using System.IO;using System.Linq;using System.Text;using System.Text.RegularExpressions;using System.Web;using System.Drawing;using System.Drawing.Imaging;using System.Drawing.Drawing2D;namespace WL.Infrastructure.Common{ public class Common { private static int seed = 1; private static int key_seed = 1; private static int noseed = 1; private static int domseed = 1; private static int geseed = 1; /// <summary> /// 取得客户端真实IP。如果有代理则取第一个非内网地址 /// </summary> public static string IPAddress { get { string result = String.Empty; result = HttpContext.Current.Request.ServerVariables["HTTP_X_FORWARDED_FOR"]; if (result != null && result != String.Empty) { //可能有代理; if (result.IndexOf(".") == -1) //没有“.”肯定是非IPv4格式; result = null; else { if (result.IndexOf(",") != -1) { //有“,”，估计多个代理。取第一个不是内网的IP。; result = result.Replace(" ", "").Replace("'", ""); string[] temparyip = result.Split(",;".ToCharArray()); for (int i = 0; i < temparyip.Length; i++) { if (IsIPAddress(temparyip[i]) && temparyip[i].Substring(0, 3) != "10." && temparyip[i].Substring(0, 7) != "192.168" && temparyip[i].Substring(0, 7) != "172.16.") { return temparyip[i]; //找到不是内网的地址 ; } } } else if (IsIPAddress(result)) //代理即是IP格式; return result; else result = null; //代理中的内容 非IP，取IP ; } } string IpAddress = (HttpContext.Current.Request.ServerVariables["HTTP_X_FORWARDED_FOR"] != null && HttpContext.Current.Request.ServerVariables["HTTP_X_FORWARDED_FOR"] != String.Empty) ? HttpContext.Current.Request.ServerVariables["HTTP_X_FORWARDED_FOR"] : HttpContext.Current.Request.ServerVariables["REMOTE_ADDR"]; if (null == result || result == String.Empty) result = HttpContext.Current.Request.ServerVariables["REMOTE_ADDR"]; if (result == null || result == String.Empty) result = HttpContext.Current.Request.UserHostAddress; if (result == "::1") { result = "127.0.0.1"; } return result; } } /// <summary> /// 绕过cnd获取真实ip /// </summary> /// <returns></returns> public static string GetUserIp() { string userIP = "未获取用户IP"; try { if (HttpContext.Current == null || HttpContext.Current.Request == null || HttpContext.Current.Request.ServerVariables == null) return ""; string CustomerIP = ""; //CDN加速后取到的IP CustomerIP = HttpContext.Current.Request.Headers["Cdn-Src-Ip"]; if (!string.IsNullOrEmpty(CustomerIP)) { return CustomerIP; } CustomerIP = HttpContext.Current.Request.ServerVariables["HTTP_X_FORWARDED_FOR"]; if (!String.IsNullOrEmpty(CustomerIP)) return CustomerIP; if (HttpContext.Current.Request.ServerVariables["HTTP_VIA"] != null) { CustomerIP = HttpContext.Current.Request.ServerVariables["HTTP_X_FORWARDED_FOR"]; if (CustomerIP == null) CustomerIP = HttpContext.Current.Request.ServerVariables["REMOTE_ADDR"]; } else { CustomerIP = HttpContext.Current.Request.ServerVariables["REMOTE_ADDR"]; } if (string.Compare(CustomerIP, "unknown", true) == 0) return HttpContext.Current.Request.UserHostAddress; return CustomerIP; } catch { } return userIP; } /**/ /// <summary> /// 判断是否是IP地址格式 0.0.0.0 /// </summary> /// <param name="str1">待判断的IP地址</param> /// <returns>true or false</returns> public static bool IsIPAddress(string str1) { if (str1 == null || str1 == string.Empty || str1.Length < 7 || str1.Length > 15) return false; string regformat = @"^/d{1,3}[/.]/d{1,3}[/.]/d{1,3}[/.]/d{1,3}$"; Regex regex = new Regex(regformat, RegexOptions.IgnoreCase); return regex.IsMatch(str1); } /// <summary> /// 时间转换时间戳 /// </summary> /// <param name="time"></param> /// <returns></returns> public static string ConvertDateTimeInt(string time) { DateTime dtStart = TimeZone.CurrentTimeZone.ToLocalTime(new DateTime(1970, 1, 1)); DateTime dtNow = DateTime.Parse(time); TimeSpan toNow = dtNow.Subtract(dtStart); string timeStamp = toNow.Ticks.ToString(); timeStamp = timeStamp.Substring(0, timeStamp.Length - 7); return timeStamp; } /// <summary> /// 时间戳转换时间 /// </summary> /// <param name="datestr"></param> /// <returns></returns> public static DateTime ConvertDate(string datestr) { DateTime dtStart = TimeZone.CurrentTimeZone.ToLocalTime(new DateTime(1970, 1, 1)); long lTime = long.Parse(datestr + "0000000"); TimeSpan toNow = new TimeSpan(lTime); DateTime dtResult = dtStart.Add(toNow); return dtResult; } /// <summary> /// 转换时间 /// </summary> /// <param name="time"></param> /// <returns></returns> public static string ConvertDateTimeInt_flot(string time) { DateTime dtStart = TimeZone.CurrentTimeZone.ToLocalTime(new DateTime(1970, 1, 1)); DateTime dtNow = DateTime.Parse(time); TimeSpan toNow = dtNow.Subtract(dtStart); string timeStamp = toNow.Ticks.ToString(); timeStamp = timeStamp.Substring(0, timeStamp.Length - 4); return timeStamp; } /// <summary> /// 上传 /// </summary> /// <param name="_rootPath"></param> /// <param name="_file"></param> /// <param name="_filename"></param> /// <param name="type_s"></param> /// <returns></returns> public static string FileUploader(string _rootPath, HttpPostedFileBase _file, string _filename = null, string type_s = "") { string sFileName = _filename; if (_file != null) { string _filePath = _file.FileName; if (_filePath != string.Empty) { string _fileType = _filePath.Substring(_filePath.LastIndexOf(".")); string sFileRoot = _rootPath; if (!System.IO.Directory.Exists(sFileRoot)) System.IO.Directory.CreateDirectory(sFileRoot); if (sFileName == null) { if (type_s != "") { sFileName = DateTime.Now.ToString("yyyyMMddHHmmssms") + type_s; } else { sFileName = DateTime.Now.ToString("yyyyMMddHHmmssms") + _fileType; } } else { if (type_s != "") { sFileName = sFileName + type_s; } else { sFileName = sFileName + _fileType; } } string sFilePath = sFileRoot + "\\" + sFileName; _file.SaveAs(sFilePath); } } return sFileName; } /// <summary> /// 根据路径把文件转换成数据流 /// </summary> /// <param name="strpath"></param> /// <returns></returns> public static byte[] Returnbyte(string strpath) { // 以二进制方式读文件 FileStream fsMyfile = new FileStream(strpath, FileMode.OpenOrCreate, FileAccess.ReadWrite); // 创建一个二进制数据流读入器，和打开的文件关联 BinaryReader brMyfile = new BinaryReader(fsMyfile); // 把文件指针重新定位到文件的开始 brMyfile.BaseStream.Seek(0, SeekOrigin.Begin); byte[] bytes = brMyfile.ReadBytes(Convert.ToInt32(fsMyfile.Length.ToString())); // 关闭以上new的各个对象 brMyfile.Close(); return bytes; } public static void DeleteFile(string filepatch) { FileInfo file = new FileInfo(filepatch);//指定文件路径 if (file.Exists)//判断文件是否存在 { file.Attributes = FileAttributes.Normal;//将文件属性设置为普通,比方说只读文件设置为普通 file.Delete();//删除文件 } } /// 取得某月的第一天 /// </summary> /// <param name="datetime">要取得月份第一天的时间</param> /// <returns></returns> private DateTime FirstDayOfMonth(DateTime datetime) { return datetime.AddDays(1 - datetime.Day); } /// <summary> /// 取得某月的最后一天 /// </summary> /// <param name="datetime">要取得月份最后一天的时间</param> /// <returns></returns> private DateTime LastDayOfMonth(DateTime datetime) { return datetime.AddDays(1 - datetime.Day).AddMonths(1).AddDays(-1); } /// <summary> /// 取得上个月第一天 /// </summary> /// <param name="datetime">要取得上个月第一天的当前时间</param> /// <returns></returns> public DateTime FirstDayOfPreviousMonth(DateTime datetime) { return datetime.AddDays(1 - datetime.Day).AddMonths(-1); } /// <summary> /// 取得上个月的最后一天 /// </summary> /// <param name="datetime">要取得上个月最后一天的当前时间</param> /// <returns></returns> public DateTime LastDayOfPrdviousMonth(DateTime datetime) { return datetime.AddDays(1 - datetime.Day).AddDays(-1); } /// <summary> /// 取得上周的第一天 /// </summary> /// <param name="datetime">要取得上周最后一天的当前时间</param> /// <returns></returns> public static DateTime FirstDayOfPrdviousWeek(DateTime datetime) { //星期一为第一天 int weeknow = Convert.ToInt32(datetime.DayOfWeek); //因为是以星期一为第一天，所以要判断weeknow等于0时，要向前推6天。 weeknow = (weeknow == 0 ? (7 - 1) : (weeknow - 1)); int daydiff = (-1) * weeknow; //本周第一天 string FirstDay = datetime.AddDays(daydiff).ToString("yyyy-MM-dd"); return Convert.ToDateTime(FirstDay); } /// <summary> /// 取得上周的最后一天 /// </summary> /// <param name="datetime">要取得上周最后一天的当前时间</param> /// <returns></returns> public static DateTime LastDayOfPrdviousWeek(DateTime datetime) { //星期天为最后一天 int weeknow = Convert.ToInt32(datetime.DayOfWeek); weeknow = (weeknow == 0 ? 7 : weeknow); int daydiff = (7 - weeknow); //本周最后一天 string LastDay = datetime.AddDays(daydiff).ToString("yyyy-MM-dd"); return Convert.ToDateTime(LastDay); } /// <summary> /// 判断字符串是否为正整数 /// </summary> /// <param name="str">要判断的字符串对象</param> /// <returns></returns> public static bool IsInt(string str) { bool isInt = false; if (!string.IsNullOrEmpty(str)) { isInt = Regex.IsMatch(str, @"^(0|([1-9]\d*))$"); } return isInt; } /// <summary> /// 判断是否为DateTime /// </summary> /// <param name="strDate"></param> /// <returns></returns> public static bool IsDateTime(string strDate) { try { DateTime.Parse(strDate); return true; } catch { return false; } } /// <summary> /// 生成单号 /// </summary> /// <param name="channel"></param> /// <returns></returns> public static string GetOrderNo() { if (seed == int.MaxValue) { seed = 1; } seed++; string tbout_trade_no = ""; string guid = Guid.NewGuid().ToString(); string last = guid.Replace("-", ""); char[] cc = last.ToCharArray(); StringBuilder sb = new StringBuilder(4); Random rd = new Random((unchecked((int)DateTime.Now.Ticks + seed))); for (int i = 0; i < 6; i++) { sb.Append(cc[rd.Next(cc.Length)]); } tbout_trade_no = sb + "-" + DateTime.Now.ToString("yyyyMMddHHmmssff"); return tbout_trade_no; } /// <summary> /// 生成密匙 /// </summary> /// <param name="mch_id"></param> /// <returns></returns> public static string GetGGAPIKey(string num_id) { if (key_seed == int.MaxValue) { key_seed = 1; } key_seed++; string key = ""; char[] constant = {'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', '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'}; StringBuilder sb = new StringBuilder(4); for (int i = 0; i < 5; i++) { Random rd = new Random((unchecked((int)DateTime.Now.Ticks + i))); sb.Append(constant[rd.Next(62)]); } key = MD5.Md5UTF8(num_id + sb).ToLower(); return key; } /// <summary> /// PostUTF8格式的JSON /// </summary> /// <param name="json"></param> /// <param name="url"></param> /// <returns></returns> public static string PostUtf8Json(string json, string url, int timeout = 1000000) { byte[] encodebytes = System.Text.Encoding.UTF8.GetBytes(json); HttpHelper helper = new HttpHelper(); HttpItem item = new HttpItem(); item.URL = url; item.Timeout = timeout; item.Method = "POST"; item.PostdataByte = encodebytes; item.PostEncoding = Encoding.UTF8; item.PostDataType = PostDataType.Byte; HttpResult result = helper.GetHtml(item); string msg = ""; if ((int)result.StatusCode < 400) { msg = result.Html; if (msg == "操作超时") { //LoggerFactory.Current.Create().LogError("请求错误，状态码为" + (int)result.StatusCode + ",url为" + url); msg = ""; } } else { //LoggerFactory.Current.Create().LogError("请求错误，状态码为" + (int)result.StatusCode + ",url为" + url); } return msg; } /// <summary> /// PostUTF8格式的Form /// </summary> /// <param name="json"></param> /// <param name="url"></param> /// <returns></returns> public static string PostUtf8Form(string json, string url, int timeout = 1000000) { byte[] encodebytes = System.Text.Encoding.UTF8.GetBytes(json); HttpHelper helper = new HttpHelper(); HttpItem item = new HttpItem(); item.URL = url; item.Timeout = timeout; item.Method = "POST"; item.Allowautoredirect = true; item.ContentType = "application/x-www-form-urlencoded"; item.PostdataByte = encodebytes; item.PostEncoding = Encoding.UTF8; item.PostDataType = PostDataType.Byte; HttpResult result = helper.GetHtml(item); string msg = ""; if ((int)result.StatusCode < 400) { msg = result.Html; if (msg == "操作超时") { //LoggerFactory.Current.Create().LogError("请求错误，状态码为" + (int)result.StatusCode + ",url为" + url); msg = ""; } } else { //LoggerFactory.Current.Create().LogError("请求错误，状态码为" + (int)result.StatusCode + ",url为" + url); } return msg; } /// <summary> /// PostGB2312格式的表单 /// </summary> /// <param name="json"></param> /// <param name="url"></param> /// <returns></returns> public static string PostGB2312Form(string json, string url, int timeout = 5000) { byte[] encodebytes = System.Text.Encoding.GetEncoding("GB2312").GetBytes(json); HttpHelper helper = new HttpHelper(); HttpItem item = new HttpItem(); item.URL = url; item.Timeout = timeout; item.Method = "POST"; item.Allowautoredirect = true; item.ContentType = "application/x-www-form-urlencoded"; item.PostdataByte = encodebytes; item.PostEncoding = Encoding.GetEncoding("GB2312"); item.PostDataType = PostDataType.Byte; HttpResult result = helper.GetHtml(item); string msg = ""; if ((int)result.StatusCode < 400) { msg = result.Html; if (msg == "操作超时") { //LoggerFactory.Current.Create().LogError("请求错误，状态码为" + (int)result.StatusCode + ",url为" + url); msg = ""; } } else { //LoggerFactory.Current.Create().LogError("请求错误，状态码为" + (int)result.StatusCode + ",url为" + url); } return msg; } /// <summary> /// PostUTF8格式的JSON /// </summary> /// <param name="json"></param> /// <param name="url"></param> /// <returns></returns> public static string PostUtf8File(byte[] encodebytes, string url, int timeout = 1000000) { //byte[] encodebytes = System.Text.Encoding.UTF8.GetBytes(json); HttpHelper helper = new HttpHelper(); HttpItem item = new HttpItem(); item.URL = url; item.Timeout = timeout; item.Method = "POST"; item.ContentType = "multipart/form-data"; item.PostdataByte = encodebytes; item.PostEncoding = Encoding.UTF8; item.PostDataType = PostDataType.Byte; HttpResult result = helper.GetHtml(item); string msg = ""; if ((int)result.StatusCode < 400) { msg = result.Html; if (msg == "操作超时") { //LoggerFactory.Current.Create().LogError("请求错误，状态码为" + (int)result.StatusCode + ",url为" + url); msg = ""; } } else { //LoggerFactory.Current.Create().LogError("请求错误，状态码为" + (int)result.StatusCode + ",url为" + url); } return msg; } /// <summary> /// Get格式 /// </summary> /// <param name="json"></param> /// <param name="url"></param> /// <returns></returns> public static string GetUrl(string url, int timeout = 1000000) { HttpHelper helper = new HttpHelper(); HttpItem item = new HttpItem(); item.Timeout = timeout; item.URL = url; HttpResult result = helper.GetHtml(item); string msg = ""; if ((int)result.StatusCode < 400) { msg = result.Html; if (msg == "操作超时") { //LoggerFactory.Current.Create().LogError("请求错误，状态码为" + (int)result.StatusCode + ",url为" + url); msg = ""; } } else { //LoggerFactory.Current.Create().LogError("请求错误，状态码为" + (int)result.StatusCode + ",url为" + url); } return msg; } /// <summary> /// 生成随机字符串 /// </summary> /// <returns></returns> public static string get_noce_str() { if (noseed == int.MaxValue) { noseed = 1; } noseed++; char[] constant = {'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', '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'}; StringBuilder sb = new StringBuilder(16); Random rd = new Random((unchecked((int)DateTime.Now.Ticks + noseed))); for (int i = 0; i < 16; i++) { sb.Append(constant[rd.Next(62)]); } return sb.ToString(); } /// <summary> /// 生成6位邀请码 /// </summary> /// <returns></returns> public static string get_generate_str() { if (geseed == int.MaxValue) { geseed = 1; } geseed++; char[] constant = {'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', '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'}; StringBuilder sb = new StringBuilder(6); Random rd = new Random((unchecked((int)DateTime.Now.Ticks + geseed))); for (int i = 0; i < 6; i++) { sb.Append(constant[rd.Next(62)]); } return sb.ToString(); } /// <summary> /// 生成6位订单号 /// </summary> /// <returns></returns> public static string Nrandom() { if (domseed == int.MaxValue) { domseed = 1; } domseed++; string rm = ""; Random rd = new Random((unchecked((int)DateTime.Now.Ticks + domseed))); for (int i = 0; i < 6; i++) { rm += rd.Next(0, 9).ToString(); } return rm; } /// <summary> /// 把数组所有元素，按照“参数=参数值”的模式用“&”字符拼接成字符串，并对参数值做urlencode /// </summary> /// <param name="sArray">需要拼接的数组</param> /// <param name="code">字符编码</param> /// <returns>拼接完成以后的字符串</returns> public static string CreateLinkStringA(SortedDictionary<string, string> dicArray) { StringBuilder prestr = new StringBuilder(); foreach (KeyValuePair<string, string> temp in dicArray) { prestr.Append(temp.Key + "=" + temp.Value + "&"); } //去掉最後一個&字符 int nLen = prestr.Length; prestr.Remove(nLen - 1, 1); return prestr.ToString(); } /// <summary> /// 把数组所有元素，按照“参数=参数值”的模式用“&”字符拼接成字符串，并对参数值做urlencode /// </summary> /// <param name="sArray">需要拼接的数组</param> /// <param name="code">字符编码</param> /// <returns>拼接完成以后的字符串</returns> public static string CreateLinkStringB(Dictionary<string, string> dicArray) { StringBuilder prestr = new StringBuilder(); foreach (KeyValuePair<string, string> temp in dicArray) { prestr.Append(temp.Key + "=" + temp.Value + "&"); } //去掉最後一個&字符 int nLen = prestr.Length; prestr.Remove(nLen - 1, 1); return prestr.ToString(); } /// <summary> /// 把数组所有元素，按照“参数值”的模式用“&”字符拼接成字符串，并对参数值做urlencode /// </summary> /// <param name="sArray">需要拼接的数组</param> /// <param name="code">字符编码</param> /// <returns>拼接完成以后的字符串</returns> public static string CreateLinkStringC(Dictionary<string, string> dicArray) { StringBuilder prestr = new StringBuilder(); foreach (KeyValuePair<string, string> temp in dicArray) { prestr.Append(temp.Value); } return prestr.ToString(); } /// <summary> /// 多余字段用指定字符串代替 /// </summary> /// <param name="MaxLength">字符串最大长度</param> /// <param name="ReplaceRemark">超出时代替的符号</param> /// <param name="value">要转换的字符串</param> /// <returns></returns> public static string Overflow(int MaxLength, string ReplaceRemark, string value) { if (value.Length > MaxLength) { return value = value.Remove(MaxLength) + ReplaceRemark; } return value; } /// <summary> /// 每隔n个字符插入n个字符 /// </summary> /// <param name="input">源字符串</param> /// <param name="interval">间隔字符数</param> /// <param name="value">待插入值</param> /// <returns>返回新生成字符串</returns> public static string InsertFormat(string input, int interval, string value) { for (int i = interval; i < input.Length; i += interval + value.Length) input = input.Insert(i, value); return input; } /// <summary> /// 手机号码隐藏中间4位 /// </summary> /// <param name="phone"></param> /// <returns></returns> public static string HidePhone(string phone) { return Regex.Replace(phone, "(\\d{3})\\d{4}(\\d{4})", "$1****$2"); } /// <summary> /// 判断是否带http，flase=有，ture=没有 /// </summary> /// <param name="url"></param> /// <returns></returns> public static bool IsHttp(string url) { string reg = @"^(http(s)?:\/\/)?(www\.)?[\w-]+(\.\w{2,4})?\.\w{2,4}?(\/)?$"; Regex r = new Regex(reg); //给网址去所有空格 string urlStr = url.Trim(); Match m = r.Match(urlStr); //判断是否带http:// if (!m.Success) return false; return true; } #region 得到一周的周一和周日的日期 /// <summary> /// 计算本周的周一日期 /// </summary> /// <returns></returns> public static DateTime GetMondayDate() { return GetMondayDate(DateTime.Now); } /// <summary> /// 计算本周周日的日期 /// </summary> /// <returns></returns> public static DateTime GetSundayDate() { return GetSundayDate(DateTime.Now); } /// <summary> /// 计算某日起始日期（礼拜一的日期） /// </summary> /// <param name="someDate">该周中任意一天</param> /// <returns>返回礼拜一日期，后面的具体时、分、秒和传入值相等</returns> public static DateTime GetMondayDate(DateTime someDate) { int i = someDate.DayOfWeek - DayOfWeek.Monday; if (i == -1) i = 6;// i值 > = 0 ，因为枚举原因，Sunday排在最前，此时Sunday-Monday=-1，必须+7=6。 TimeSpan ts = new TimeSpan(i, 0, 0, 0); return someDate.Subtract(ts); } /// <summary> /// 计算某日结束日期（礼拜日的日期） /// </summary> /// <param name="someDate">该周中任意一天</param> /// <returns>返回礼拜日日期，后面的具体时、分、秒和传入值相等</returns> public static DateTime GetSundayDate(DateTime someDate) { int i = someDate.DayOfWeek - DayOfWeek.Sunday; if (i != 0) i = 7 - i;// 因为枚举原因，Sunday排在最前，相减间隔要被7减。 TimeSpan ts = new TimeSpan(i, 0, 0, 0); return someDate.Add(ts); } #endregion } public class ValidateCode { public ValidateCode() { } /// <summary> /// 验证码的最大长度 /// </summary> public int MaxLength { get { return 10; } } /// <summary> /// 验证码的最小长度 /// </summary> public int MinLength { get { return 1; } } /// <summary> /// 生成验证码 /// </summary> /// <param name="length">指定验证码的长度</param> /// <returns></returns> public string CreateValidateCode(int length) { int[] randMembers = new int[length]; int[] validateNums = new int[length]; string validateNumberStr = ""; //生成起始序列值 int seekSeek = unchecked((int)DateTime.Now.Ticks); Random seekRand = new Random(seekSeek); int beginSeek = (int)seekRand.Next(0, Int32.MaxValue - length * 10000); int[] seeks = new int[length]; for (int i = 0; i < length; i++) { beginSeek += 10000; seeks[i] = beginSeek; } //生成随机数字 for (int i = 0; i < length; i++) { Random rand = new Random(seeks[i]); int pownum = 1 * (int)Math.Pow(10, length); randMembers[i] = rand.Next(pownum, Int32.MaxValue); } //抽取随机数字 for (int i = 0; i < length; i++) { string numStr = randMembers[i].ToString(); int numLength = numStr.Length; Random rand = new Random(); int numPosition = rand.Next(0, numLength - 1); validateNums[i] = Int32.Parse(numStr.Substring(numPosition, 1)); } //生成验证码 for (int i = 0; i < length; i++) { validateNumberStr += validateNums[i].ToString(); } return validateNumberStr; } /// <summary> /// 创建验证码的图片 /// </summary> /// <param name="context">要输出到的page对象</param> /// <param name="validateNum">验证码</param> public void CreateValidateGraphic(string validateCode, HttpContext context) { Bitmap image = new Bitmap((int)Math.Ceiling(validateCode.Length * 12.0), 22); Graphics g = Graphics.FromImage(image); try { //生成随机生成器 Random random = new Random(); //清空图片背景色 g.Clear(Color.White); //画图片的干扰线 for (int i = 0; i < 25; i++) { int x1 = random.Next(image.Width); int x2 = random.Next(image.Width); int y1 = random.Next(image.Height); int y2 = random.Next(image.Height); g.DrawLine(new Pen(Color.Silver), x1, y1, x2, y2); } Font font = new Font("Arial", 12, (FontStyle.Bold | FontStyle.Italic)); LinearGradientBrush brush = new LinearGradientBrush(new Rectangle(0, 0, image.Width, image.Height), Color.Blue, Color.DarkRed, 1.2f, true); g.DrawString(validateCode, font, brush, 3, 2); //画图片的前景干扰点 for (int i = 0; i < 100; i++) { int x = random.Next(image.Width); int y = random.Next(image.Height); image.SetPixel(x, y, Color.FromArgb(random.Next())); } //画图片的边框线 g.DrawRectangle(new Pen(Color.Silver), 0, 0, image.Width - 1, image.Height - 1); //保存图片数据 MemoryStream stream = new MemoryStream(); image.Save(stream, ImageFormat.Jpeg); //输出图片流 context.Response.Clear(); context.Response.ContentType = "image/jpeg"; context.Response.BinaryWrite(stream.ToArray()); } finally { g.Dispose(); image.Dispose(); } } /// <summary> /// 得到验证码图片的长度 /// </summary> /// <param name="validateNumLength">验证码的长度</param> /// <returns></returns> public static int GetImageWidth(int validateNumLength) { return (int)(validateNumLength * 12.0); } /// <summary> /// 得到验证码的高度 /// </summary> /// <returns></returns> public static double GetImageHeight() { return 22.5; } //C# MVC 升级版 /// <summary> /// 创建验证码的图片 /// </summary> /// <param name="containsPage">要输出到的page对象</param> /// <param name="validateNum">验证码</param> public byte[] CreateValidateGraphic(string validateCode) { Bitmap image = new Bitmap((int)Math.Ceiling(validateCode.Length * 12.0), 22); Graphics g = Graphics.FromImage(image); try { //生成随机生成器 Random random = new Random(); //清空图片背景色 g.Clear(Color.White); //画图片的干扰线 for (int i = 0; i < 25; i++) { int x1 = random.Next(image.Width); int x2 = random.Next(image.Width); int y1 = random.Next(image.Height); int y2 = random.Next(image.Height); g.DrawLine(new Pen(Color.Silver), x1, y1, x2, y2); } Font font = new Font("Arial", 12, (FontStyle.Bold | FontStyle.Italic)); LinearGradientBrush brush = new LinearGradientBrush(new Rectangle(0, 0, image.Width, image.Height), Color.Blue, Color.DarkRed, 1.2f, true); g.DrawString(validateCode, font, brush, 3, 2); //画图片的前景干扰点 for (int i = 0; i < 100; i++) { int x = random.Next(image.Width); int y = random.Next(image.Height); image.SetPixel(x, y, Color.FromArgb(random.Next())); } //画图片的边框线 g.DrawRectangle(new Pen(Color.Silver), 0, 0, image.Width - 1, image.Height - 1); //保存图片数据 MemoryStream stream = new MemoryStream(); image.Save(stream, ImageFormat.Jpeg); //输出图片流 return stream.ToArray(); } finally { g.Dispose(); image.Dispose(); } } }}
