后台常用方法
首先在后台创建一个类 CommonMethods
public class CommonMethods { }
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1.常用验证方法
#region 验证帐号 /// <summary> /// 验证帐号 /// </summary> /// <param name="source">字母开头，允许5-16字节，允许字母数字下划线</param> /// <returns></returns> public static bool IsAccount(string source) { return Regex.IsMatch(source, @"^[a-zA-Z][a-zA-Z0-9_]{4,15}$", RegexOptions.IgnoreCase); } #endregion #region 验证密码 /// <summary> /// 验证密码 /// </summary> /// <param name="source">以字母开头，长度在6~18之间，只能包含字母、数字和下划线</param> /// <returns></returns> public static bool IsPassword(string source) { return Regex.IsMatch(source, @"^[a-zA-Z]\w{5,17}$", RegexOptions.IgnoreCase); } #endregion #region 验证邮箱 /// <summary> /// 验证邮箱 /// </summary> /// <param name="source"></param> /// <returns></returns> public static bool IsEmail(string source) { return Regex.IsMatch(source, @"^[A-Za-z0-9](([_\.\-]?[a-zA-Z0-9]+)*)@([A-Za-z0-9]+)(([\.\-]?[a-zA-Z0-9]+)*)\.([A-Za-z]{2,})$", RegexOptions.IgnoreCase); } #endregion #region 验证手机 /// <summary> /// 验证手机 /// </summary> /// <param name="source"></param> /// <returns></returns> public static bool IsPhone(string source) { return Regex.IsMatch(source, @"^(13[0-9]|14[5|7]|15[0|1|2|3|5|6|7|8|9]|18[0|1|2|3|5|6|7|8|9])\d{8}$", RegexOptions.IgnoreCase); } #endregion #region 身份证验证 /// <summary> /// 身份证验证 /// </summary> /// <param name="cardId">身份证号</param> /// <returns></returns> public bool CheckIdCard(string cardId) { if (cardId.Length == 18) { bool check = CheckIdCard18(cardId); return check; } else if (cardId.Length == 15) { bool check = CheckIdCard15(cardId); return check; } else { return false; } } /// <summary> /// 18位身份证验证 /// </summary> /// <param name="cardId">身份证号</param> /// <returns></returns> private bool CheckIdCard18(string cardId) { long n = 0; if (long.TryParse(cardId.Remove(17), out n) == false || n < Math.Pow(10, 16) || long.TryParse(cardId.Replace('x', '0').Replace('X', '0'), out n) == false) { return false;//数字验证 } const string address = "11x22x35x44x53x12x23x36x45x54x13x31x37x46x61x14x32x41x50x62x15x33x42x51x63x21x34x43x52x64x65x71x81x82x91"; if (address.IndexOf(cardId.Remove(2), System.StringComparison.Ordinal) == -1) { return false;//省份验证 } string birth = cardId.Substring(6, 8).Insert(6, "-").Insert(4, "-"); DateTime time; if (DateTime.TryParse(birth, out time) == false) { return false;//生日验证 } string[] arrVarifyCode = ("1,0,x,9,8,7,6,5,4,3,2").Split(','); string[] wi = ("7,9,10,5,8,4,2,1,6,3,7,9,10,5,8,4,2").Split(','); char[] ai = cardId.Remove(17).ToCharArray(); int sum = 0; for (int i = 0; i < 17; i++) { sum += int.Parse(wi[i]) * int.Parse(ai[i].ToString()); } int y = -1; Math.DivRem(sum, 11, out y); if (arrVarifyCode[y] != cardId.Substring(17, 1).ToLower()) { return false;//校验码验证 } return true;//符合GB11643-1999标准 } /// <summary> /// 15位身份证验证 /// </summary> /// <param name="cardId">身份证号</param> /// <returns></returns> private bool CheckIdCard15(string cardId) { long n = 0; if (long.TryParse(cardId, out n) == false || n < Math.Pow(10, 14)) { return false;//数字验证 } const string address = "11x22x35x44x53x12x23x36x45x54x13x31x37x46x61x14x32x41x50x62x15x33x42x51x63x21x34x43x52x64x65x71x81x82x91"; if (address.IndexOf(cardId.Remove(2), System.StringComparison.Ordinal) == -1) { return false;//省份验证 } string birth = cardId.Substring(6, 6).Insert(4, "-").Insert(2, "-"); DateTime time; if (DateTime.TryParse(birth, out time) == false) { return false;//生日验证 } return true;//符合15位身份证标准 } #endregion
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2.生成时间戳
#region 生成时间戳 /// <summary> /// 生成时间戳，标准北京时间，时区为东八区，自1970年1月1日 0点0分0秒以来的秒数 /// </summary> /// <returns></returns> public static string GenerateTimeStamp() { TimeSpan ts = DateTime.UtcNow - new DateTime(1970, 1, 1, 0, 0, 0, 0); return Convert.ToInt64(ts.TotalSeconds).ToString(CultureInfo.InvariantCulture); } #endregion
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3.生成随机数
#region 生成随机数 /// <summary> /// 生成随机数 /// </summary> /// <param name="length">生成字符串长度</param> /// <param name="type">1.数字+字母 2.整形 3.字符 </param> /// <returns></returns> public static string GenerateCode(int length, int type) { int number; char code; string checkCode = String.Empty; var random = new Random(); if (type == 1) { for (int i = 0; i < length; i++) { number = random.Next(); if (number % 2 == 0) code = (char)('0' + (char)(number % 10)); else code = (char)('A' + (char)(number % 26)); checkCode += code.ToString(CultureInfo.InvariantCulture); } } else if (type == 2) { for (int i = 0; i < length; i++) { number = random.Next(); code = (char)('0' + (char)(number % 10)); checkCode += code.ToString(CultureInfo.InvariantCulture); } } else if (type == 3) { for (int i = 0; i < length; i++) { number = random.Next(); code = (char)('A' + (char)(number % 26)); checkCode += code.ToString(CultureInfo.InvariantCulture); } } return checkCode; } #endregion
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4.带有“,”的字符串转成int[]
#region 带有“,”的字符串转成int[] /// <summary> /// 带有“,”的字符串转成int[] /// </summary> /// <param name="str">1,2,3,4,5,6,8,9,10,</param> /// <returns></returns> public static int[] StringToIntArray(string str) { int[] intArray = null; if (!string.IsNullOrEmpty(str)) { string newStr = str.TrimEnd(','); intArray = newStr.Split(',').Select(v => Convert.ToInt32(v)).ToArray(); } return intArray; } #endregion
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5.带有“,”的字符串转成string[]
#region 带有“,”的字符串转成string[] /// <summary> /// 带有“,”的字符串转成string[] /// </summary> /// <param name="str">A,B,C,D,E,F,G,H,I,</param> /// <returns></returns> public static string[] StringToStrArray(string str) { string[] strArray = null; if (!string.IsNullOrEmpty(str)) { string newStr = str.TrimEnd(','); strArray = newStr.Split(','); } return strArray; } #endregion
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6.MD5加密
#region 16位MD5加密 /// <summary> /// 16位MD5加密 /// </summary> /// <param name="encryptString">待加密的字符串</param> /// <returns></returns> public static string Md5Encrypt16(string encryptString) { var md5 = new MD5CryptoServiceProvider(); string t2 = BitConverter.ToString(md5.ComputeHash(Encoding.Default.GetBytes(encryptString)), 4, 8); t2 = t2.Replace("-", ""); return t2; } #endregion #region 32位MD5加密 /// <summary> /// 32位MD5加密 /// </summary> /// <param name="encryptString">待加密的字符串</param> /// <returns></returns> public static string Md5Encrypt32(string encryptString) { string cl = encryptString; MD5 md5 = MD5.Create(); //实例化一个md5对像 // 加密后是一个字节类型的数组，这里要注意编码UTF8/Unicode等的选择 byte[] s = md5.ComputeHash(Encoding.UTF8.GetBytes(cl)); // 通过使用循环，将字节类型的数组转换为字符串，此字符串是常规字符格式化所得 string pwd = s.Aggregate("", (current, t) => current + t.ToString("X")); return pwd.ToLower(); } #endregion
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7.Session操作方法
#region 添加Session /// <summary> /// 添加Session /// </summary> /// <param name="strSessionName">Session对象名称</param> /// <param name="objValue">Session值</param> /// <param name="iExpires">有效期(分钟)</param> public static void AddSession(string strSessionName, string objValue, int iExpires) { HttpContext.Current.Session[strSessionName] = objValue; HttpContext.Current.Session.Timeout = iExpires; } #endregion #region 读取某个Session对象 /// <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 object GetSession(string strSessionName) { return HttpContext.Current.Session[strSessionName]; } #endregion #region 删除某个Session对象 /// <summary> /// 删除某个Session对象 /// </summary> /// <param name="strSessionName">Session对象名称</param> public static void RemoveSession(string strSessionName) { HttpContext.Current.Session.Remove(strSessionName); } #endregion
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Session操作方法使用方式：
CommonMethods.AddSession("www", "123456", 10); var j = CommonMethods.GetSession("www"); CommonMethods.RemoveSession("www");
8.日志文件
#region 日志文件记录 /// <summary> /// 日志文件记录 /// </summary> /// <param name="ex">异常信息</param> public static void WriteErorrLog(Exception ex) { if (ex == null) return; //ex = null 返回 DateTime dt = DateTime.Now; // 设置日志时间 string time = dt.ToString("yyyy-MM-dd HH:mm:ss"); //年-月-日 时：分：秒 string logName = dt.ToString("yyyy-MM-dd"); //日志名称 string logPath = Path.Combine(System.AppDomain.CurrentDomain.BaseDirectory, Path.Combine("log", logName)); //日志存放路径 string log = Path.Combine(logPath, string.Format("{0}.log", logName)); //路径 + 名称 try { var info = new FileInfo(log); if (info.Directory != null && !info.Directory.Exists) { info.Directory.Create(); } using (var write = new StreamWriter(log, true, Encoding.GetEncoding("utf-8"))) { write.WriteLine(time); write.WriteLine(ex.Message); write.WriteLine("异常信息：" + ex); write.WriteLine("异常堆栈：" + ex.StackTrace); write.WriteLine("异常简述：" + ex.Message); write.WriteLine("\r\n----------------------------------\r\n"); write.Flush(); write.Close(); write.Dispose(); } } catch (Exception) { throw; } } #endregion
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日志文件使用方式：
try { } catch (Exception ex) { CommonMethods.WriteErorrLog(ex); }
9.获取客户端的IP地址
#region 获取客户端的IP地址 /// <summary> /// 获取客户端的IP地址 /// </summary> /// <returns>客户端IP地址</returns> public static string Get_ClientIP() { string result = HttpContext.Current.Request.Headers["X-Real-IP"]; if (result != null) { return result; } if (HttpContext.Current.Request.ServerVariables["REMOTE_ADDR"] != null)//发出请求的远程主机的IP地址 { result = HttpContext.Current.Request.ServerVariables["REMOTE_ADDR"].ToString(CultureInfo.InvariantCulture); } else if (HttpContext.Current.Request.ServerVariables["HTTP_VIA"] != null)//判断是否设置代理，若使用了代理 { if (HttpContext.Current.Request.ServerVariables["HTTP_X_FORWARDED_FOR"] != null)//获取代理服务器的IP { result = HttpContext.Current.Request.ServerVariables["HTTP_X_FORWARDED_FOR"].ToString(CultureInfo.InvariantCulture); } else { result = HttpContext.Current.Request.UserHostAddress; } } else { result = HttpContext.Current.Request.UserHostAddress; } if (result == "::1") result = string.Empty; return result; } #endregion
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