微信小程序的出现,代表新一代的互联网的出现.在之前,门店的模式销售全部依托平台;类似美团,饿了么等互联网平台。门店自己运营开发产品成本太高。所以。云商根据微信小程序围绕着云中心化去解决这个问题;

什么叫去中心化?

那当然不是一些代码就能解决的。而是需要靠思想;现在非常火热的区块链,去中心化,数字货币等这些新词。全部都和 比特币 混合着一起去思考了。其实不然。

去中心化;就是去掉中心平台的。自己独立运营自己的平台。老板娘可以自己做一个自己的平台。里面的奖励制度和平台模式如何设计。都是根据自己的想法来走。

并不需要像传统一样的。等着客人过来。用着最原始的发传单的方式推广。而是主动出击。让客人变成自己的业务员。让客人带客人过来。这只是门店的拓客系统一部分。

像美容院最重要的改革是:在线预约;在线预约最大的特点。是今天可以知道后面几天的业绩;而且更重要的是:客人一键预约。直接导航定位。不用再通过电话或者短信一步一步的告诉客人怎么来店消费;

        

技师预约系统功能包含:

1.微信小程序自带功能:附近小程序搜索到您的门店小程序

2.小程序分为:商户端   和 客户端

3.项目技师预约系统

4.店铺商品售卖系统

5.店铺信息展示功能

6.客人卡项功能

7.店内营销功能(充卡送余额或者充卡送卡项)

8.客人在线充值功能

9.统计统计功能

10.技师预览功能

如果您对我的互联网分析之《美容院技师预约小程序系统》感兴趣;可直接来电咨询:①③④②⑧⑧⑧④⑦①⑧

或者加我二维码:

另赠送一套.Net开发人员工具代码库

 /// <summary>
    /// 常用方法
    /// </summary>
    public sealed partial class Utils
    {
        #region 系统版本
        /// <summary>
        /// 版本信息类
        /// </summary>
        public class VersionInfo
        {
            public int FileMajorPart
            {
                get { return 1; }
            }
            public int FileMinorPart
            {
                get { return 0; }
            }
            public int FileBuildPart
            {
                get { return 0; }
            }
            public string ProductName
            {
                get { return "ERP1.0"; }
            }
            public int ProductType
            {
                get { return 1; }
            }
        }
        public static string GetVersion()
        {
            return "1.0";
        }
        #endregion

        #region 对象转换处理
        /// <summary>
        /// 判断对象是否为Int32类型的数字
        /// </summary>
        /// <param name="Expression"></param>
        /// <returns></returns>
        public static bool IsNumeric(object expression)
        {
            if (expression != null)
                return IsNumeric(expression.ToString());

            return false;

        }

        /// <summary>
        /// 判断对象是否为Int32类型的数字
        /// </summary>
        /// <param name="Expression"></param>
        /// <returns></returns>
        public static bool IsNumeric(string expression)
        {
            if (expression != null)
            {
                string str = expression;
                if (str.Length > 0 && str.Length <= 11 && Regex.IsMatch(str, @"^[-]?[0-9]*[.]?[0-9]*$"))
                {
                    if ((str.Length < 10) || (str.Length == 10 && str[0] == '1') || (str.Length == 11 && str[0] == '-' && str[1] == '1'))
                        return true;
                }
            }
            return false;
        }
        /// <summary>
        /// 截取字符串长度,超出部分使用后缀suffix代替,比如abcdevfddd取前3位,后面使用...代替
        /// </summary>
        /// <param name="orginStr"></param>
        /// <param name="length"></param>
        /// <param name="suffix"></param>
        /// <returns></returns>
        public static string SubStrAddSuffix(string orginStr, int length, string suffix)
        {
            string ret = orginStr;
            if (orginStr.Length > length)
            {
                ret = orginStr.Substring(0, length) + suffix;
            }
            return ret;
        }
        /// <summary>
        /// 是否为Double类型
        /// </summary>
        /// <param name="expression"></param>
        /// <returns></returns>
        public static bool IsDouble(object expression)
        {
            if (expression != null)
                return Regex.IsMatch(expression.ToString(), @"^([0-9])[0-9]*(\.\w*)?$");

            return false;
        }

        /// <summary>
        /// 检测是否符合email格式
        /// </summary>
        /// <param name="strEmail">要判断的email字符串</param>
        /// <returns>判断结果</returns>
        public static bool IsValidEmail(string strEmail)
        {
            return Regex.IsMatch(strEmail, @"^[\w\.]+([-]\w+)*@[A-Za-z0-9-_]+[\.][A-Za-z0-9-_]");
        }
        public static bool IsValidDoEmail(string strEmail)
        {
            return Regex.IsMatch(strEmail, @"^@((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.)|(([\w-]+\.)+))([a-zA-Z]{2,4}|[0-9]{1,3})(\]?)$");
        }

        /// <summary>
        /// 检测是否是正确的Url
        /// </summary>
        /// <param name="strUrl">要验证的Url</param>
        /// <returns>判断结果</returns>
        public static bool IsURL(string strUrl)
        {
            return Regex.IsMatch(strUrl, @"^(http|https)\://([a-zA-Z0-9\.\-]+(\:[a-zA-Z0-9\.&%\$\-]+)*@)*((25[0-5]|2[0-4][0-9]|[0-1]{1}[0-9]{2}|[1-9]{1}[0-9]{1}|[1-9])\.(25[0-5]|2[0-4][0-9]|[0-1]{1}[0-9]{2}|[1-9]{1}[0-9]{1}|[1-9]|0)\.(25[0-5]|2[0-4][0-9]|[0-1]{1}[0-9]{2}|[1-9]{1}[0-9]{1}|[1-9]|0)\.(25[0-5]|2[0-4][0-9]|[0-1]{1}[0-9]{2}|[1-9]{1}[0-9]{1}|[0-9])|localhost|([a-zA-Z0-9\-]+\.)*[a-zA-Z0-9\-]+\.(com|edu|gov|int|mil|net|org|biz|arpa|info|name|pro|aero|coop|museum|[a-zA-Z]{1,10}))(\:[0-9]+)*(/($|[a-zA-Z0-9\.\,\?\'\\\+&%\$#\=~_\-]+))*$");
        }

        /// <summary>
        /// 将字符串转换为数组
        /// </summary>
        /// <param name="str">字符串</param>
        /// <returns>字符串数组</returns>
        public static string[] GetStrArray(string str)
        {
            return str.Split(new char[',']);
        }

        /// <summary>
        /// 将数组转换为字符串
        /// </summary>
        /// <param name="list">List</param>
        /// <param name="speater">分隔符</param>
        /// <returns>String</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>
        /// object型转换为bool型
        /// </summary>
        /// <param name="strValue">要转换的字符串</param>
        /// <param name="defValue">缺省值</param>
        /// <returns>转换后的bool类型结果</returns>
        public static bool StrToBool(object expression, bool defValue)
        {
            if (expression != null)
                return StrToBool(expression, defValue);

            return defValue;
        }

        /// <summary>
        /// string型转换为bool型
        /// </summary>
        /// <param name="strValue">要转换的字符串</param>
        /// <param name="defValue">缺省值</param>
        /// <returns>转换后的bool类型结果</returns>
        public static bool StrToBool(string expression, bool defValue)
        {
            if (expression != null)
            {
                if (string.Compare(expression, "true", true) == 0)
                    return true;
                else if (string.Compare(expression, "false", true) == 0)
                    return false;
            }
            return defValue;
        }

        /// <summary>
        /// 将对象转换为Int32类型
        /// </summary>
        /// <param name="expression">要转换的字符串</param>
        /// <param name="defValue">缺省值</param>
        /// <returns>转换后的int类型结果</returns>
        public static int ObjToInt(object expression, int defValue)
        {
            if (expression != null)
                return StrToInt(expression.ToString(), defValue);

            return defValue;
        }

        /// <summary>
        /// 将字符串转换为Int32类型
        /// </summary>
        /// <param name="expression">要转换的字符串</param>
        /// <param name="defValue">缺省值</param>
        /// <returns>转换后的int类型结果</returns>
        public static int StrToInt(string expression, int defValue)
        {
            if (string.IsNullOrEmpty(expression) || expression.Trim().Length >= 11 || !Regex.IsMatch(expression.Trim(), @"^([-]|[0-9])[0-9]*(\.\w*)?$"))
                return defValue;

            int rv;
            if (Int32.TryParse(expression, out rv))
                return rv;

            return Convert.ToInt32(StrToFloat(expression, defValue));
        }

        /// <summary>
        /// Object型转换为decimal型
        /// </summary>
        /// <param name="strValue">要转换的字符串</param>
        /// <param name="defValue">缺省值</param>
        /// <returns>转换后的decimal类型结果</returns>
        public static decimal ObjToDecimal(object expression, decimal defValue)
        {
            if (expression != null)
                return StrToDecimal(expression.ToString(), defValue);

            return defValue;
        }

        /// <summary>
        /// string型转换为decimal型
        /// </summary>
        /// <param name="strValue">要转换的字符串</param>
        /// <param name="defValue">缺省值</param>
        /// <returns>转换后的decimal类型结果</returns>
        public static decimal StrToDecimal(string expression, decimal defValue)
        {
            if ((expression == null) || (expression.Length > 10))
                return defValue;

            decimal intValue = defValue;
            if (expression != null)
            {
                bool IsDecimal = Regex.IsMatch(expression, @"^([-]|[0-9])[0-9]*(\.\w*)?$");
                if (IsDecimal)
                    decimal.TryParse(expression, out intValue);
            }
            return intValue;
        }

        /// <summary>
        /// Object型转换为float型
        /// </summary>
        /// <param name="strValue">要转换的字符串</param>
        /// <param name="defValue">缺省值</param>
        /// <returns>转换后的int类型结果</returns>
        public static float ObjToFloat(object expression, float defValue)
        {
            if (expression != null)
                return StrToFloat(expression.ToString(), defValue);

            return defValue;
        }

        /// <summary>
        /// string型转换为float型
        /// </summary>
        /// <param name="strValue">要转换的字符串</param>
        /// <param name="defValue">缺省值</param>
        /// <returns>转换后的int类型结果</returns>
        public static float StrToFloat(string expression, float defValue)
        {
            if ((expression == null) || (expression.Length > 10))
                return defValue;

            float intValue = defValue;
            if (expression != null)
            {
                bool IsFloat = Regex.IsMatch(expression, @"^([-]|[0-9])[0-9]*(\.\w*)?$");
                if (IsFloat)
                    float.TryParse(expression, out intValue);
            }
            return intValue;
        }

        /// <summary>
        /// 将对象转换为日期时间类型
        /// </summary>
        /// <param name="str">要转换的字符串</param>
        /// <param name="defValue">缺省值</param>
        /// <returns>转换后的int类型结果</returns>
        public static DateTime StrToDateTime(string str, DateTime defValue)
        {
            if (!string.IsNullOrEmpty(str))
            {
                DateTime dateTime;
                if (DateTime.TryParse(str, out dateTime))
                    return dateTime;
            }
            return defValue;
        }

        /// <summary>
        /// 将对象转换为日期时间类型
        /// </summary>
        /// <param name="str">要转换的字符串</param>
        /// <returns>转换后的int类型结果</returns>
        public static DateTime StrToDateTime(string str)
        {
            return StrToDateTime(str, DateTime.Now);
        }

        /// <summary>
        /// 将对象转换为日期时间类型
        /// </summary>
        /// <param name="obj">要转换的对象</param>
        /// <returns>转换后的int类型结果</returns>
        public static DateTime ObjectToDateTime(object obj)
        {
            return StrToDateTime(obj.ToString());
        }

        /// <summary>
        /// 将对象转换为日期时间类型
        /// </summary>
        /// <param name="obj">要转换的对象</param>
        /// <param name="defValue">缺省值</param>
        /// <returns>转换后的int类型结果</returns>
        public static DateTime ObjectToDateTime(object obj, DateTime defValue)
        {
            return StrToDateTime(obj.ToString(), defValue);
        }

        /// <summary>
        /// 将对象转换为字符串
        /// </summary>
        /// <param name="obj">要转换的对象</param>
        /// <returns>转换后的string类型结果</returns>
        public static string ObjectToStr(object obj)
        {
            if (obj == null)
                return "";
            return obj.ToString().Trim();
        }

        /// <summary>
        /// 将对象转换为Int类型
        /// </summary>
        /// <param name="o"></param>
        /// <returns></returns>
        public static int ObjToInt(object obj)
        {
            if (isNumber(obj))
            {
                return int.Parse(obj.ToString());
            }
            else
            {
                return 0;
            }
        }
        /// <summary>
        /// 判断对象是否可以转成int型
        /// </summary>
        /// <param name="o"></param>
        /// <returns></returns>
        public static bool isNumber(object o)
        {
            int tmpInt;
            if (o == null)
            {
                return false;
            }
            if (o.ToString().Trim().Length == 0)
            {
                return false;
            }
            if (!int.TryParse(o.ToString(), out tmpInt))
            {
                return false;
            }
            else
            {
                return true;
            }
        }
        #endregion

        #region 分割字符串
        /// <summary>
        /// 分割字符串
        /// </summary>
        public static string[] SplitString(string strContent, string strSplit)
        {
            if (!string.IsNullOrEmpty(strContent))
            {
                if (strContent.IndexOf(strSplit) < 0)
                    return new string[] { strContent };

                return Regex.Split(strContent, Regex.Escape(strSplit), RegexOptions.IgnoreCase);
            }
            else
                return new string[0] { };
        }

        /// <summary>
        /// 分割字符串
        /// </summary>
        /// <returns></returns>
        public static string[] SplitString(string strContent, string strSplit, int count)
        {
            string[] result = new string[count];
            string[] splited = SplitString(strContent, strSplit);

            for (int i = 0; i < count; i++)
            {
                if (i < splited.Length)
                    result[i] = splited[i];
                else
                    result[i] = string.Empty;
            }

            return result;
        }
        #endregion

        #region 删除最后结尾的一个逗号
        /// <summary>
        /// 删除最后结尾的一个逗号
        /// </summary>
        public static string DelLastComma(string str)
        {
            if (str.Length < 1)
            {
                return "";
            }
            return str.Substring(0, str.LastIndexOf(","));
        }
        #endregion

        #region 删除最后结尾的指定字符后的字符
        /// <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)
        {
            if (string.IsNullOrEmpty(str))
                return "";
            if (str.LastIndexOf(strchar) >= 0 && str.LastIndexOf(strchar) == str.Length - 1)
            {
                return str.Substring(0, str.LastIndexOf(strchar));
            }
            return str;
        }
        #endregion

        #region 生成指定长度的字符串
        /// <summary>
        /// 生成指定长度的字符串,即生成strLong个str字符串
        /// </summary>
        /// <param name="strLong">生成的长度</param>
        /// <param name="str">以str生成字符串</param>
        /// <returns></returns>
        public static string StringOfChar(int strLong, string str)
        {
            string ReturnStr = "";
            for (int i = 0; i < strLong; i++)
            {
                ReturnStr += str;
            }

            return ReturnStr;
        }
        #endregion

        #region 生成日期随机码
        /// <summary>
        /// 生成日期随机码 每毫秒
        /// </summary>
        /// <returns></returns>
        public static string GetRamCode()
        {
            #region
            return DateTime.Now.ToString("yyyyMMddHHmmssffff");
            #endregion
        }

        /// <summary>
        /// 生成日期随机码 每分钟
        /// </summary>
        /// <returns></returns>
        public static string GetDateCode()
        {
            #region
            return DateTime.Now.ToString("yyyyMMddHH");
            #endregion
        }
        #endregion

        #region 生成随机字母或数字
        /// <summary>
        /// 生成随机数字
        /// </summary>
        /// <param name="length">生成长度</param>
        /// <returns></returns>
        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>
        /// <returns></returns>
        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;
        }
        /// <summary>
        /// 生成随机字母字符串(数字字母混和)
        /// </summary>
        /// <param name="codeCount">待生成的位数</param>
        public static string GetCheckCode(int codeCount)
        {
            string str = string.Empty;
            int rep = 0;
            long num2 = DateTime.Now.Ticks + rep;
            rep++;
            Random random = new Random(((int)(((ulong)num2) & 0xffffffffL)) | ((int)(num2 >> rep)));
            for (int i = 0; i < codeCount; i++)
            {
                char ch;
                int num = random.Next();
                if ((num % 2) == 0)
                {
                    ch = (char)(0x30 + ((ushort)(num % 10)));
                }
                else
                {
                    ch = (char)(0x41 + ((ushort)(num % 0x1a)));
                }
                str = str + ch.ToString();
            }
            return str;
        }
        /// <summary>
        /// 根据日期和随机码生成订单号
        /// </summary>
        /// <returns></returns>
        public static string GetOrderNumber()
        {
            string num = DateTime.Now.ToString("yyMMddHHmmss");//yyyyMMddHHmmssms
            return num + Number(2, true).ToString();
        }
        private static int Next(int numSeeds, int length)
        {
            byte[] buffer = new byte[length];
            System.Security.Cryptography.RNGCryptoServiceProvider Gen = new System.Security.Cryptography.RNGCryptoServiceProvider();
            Gen.GetBytes(buffer);
            uint randomResult = 0x0;//这里用uint作为生成的随机数  
            for (int i = 0; i < length; i++)
            {
                randomResult |= ((uint)buffer[i] << ((length - 1 - i) * 8));
            }
            return (int)(randomResult % numSeeds);
        }
        #endregion

        #region 截取字符长度
        /// <summary>
        /// 截取字符长度,带"..."
        /// </summary>
        /// <param name="inputString">字符</param>
        /// <param name="len">长度</param>
        /// <returns></returns>
        public static string CutString(string inputString, int len)
        {
            if (string.IsNullOrEmpty(inputString))
                return "";
            inputString = DropHTML(inputString);
            ASCIIEncoding ascii = new 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;
            }
            //如果截过则加上半个省略号 
            byte[] mybyte = System.Text.Encoding.Default.GetBytes(inputString);
            if (mybyte.Length > len)
                tempString += "";
            return tempString;
        }
        /// <summary>
        /// 截取指定长度字符,可指定超出部分的后缀
        /// </summary>
        /// <param name="inputString"></param>
        /// <param name="len"></param>
        /// <param name="str"></param>
        /// <returns></returns>
        public static string CutString(string inputString, int len, string str)
        {
            if (string.IsNullOrEmpty(inputString))
                return "";
            inputString = DropHTML(inputString);
            ASCIIEncoding ascii = new 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 (mybyte.Length > len)
                tempString += str;
            return tempString;
        }
        #endregion

        #region 清除HTML标记
        public static string DropHTML(string Htmlstring)
        {
            if (string.IsNullOrEmpty(Htmlstring)) return "";
            //删除脚本  
            Htmlstring = Regex.Replace(Htmlstring, @"<script[^>]*?>.*?</script>", "", RegexOptions.IgnoreCase);
            //删除HTML  
            Htmlstring = Regex.Replace(Htmlstring, @"<(.[^>]*)>", "", RegexOptions.IgnoreCase);
            Htmlstring = Regex.Replace(Htmlstring, @"([\r\n])[\s]+", "", RegexOptions.IgnoreCase);
            Htmlstring = Regex.Replace(Htmlstring, @"-->", "", RegexOptions.IgnoreCase);
            Htmlstring = Regex.Replace(Htmlstring, @"<!--.*", "", RegexOptions.IgnoreCase);
            Htmlstring = Regex.Replace(Htmlstring, @"&(quot|#34);", "\"", RegexOptions.IgnoreCase);
            Htmlstring = Regex.Replace(Htmlstring, @"&(amp|#38);", "&", RegexOptions.IgnoreCase);
            Htmlstring = Regex.Replace(Htmlstring, @"&(lt|#60);", "<", RegexOptions.IgnoreCase);
            Htmlstring = Regex.Replace(Htmlstring, @"&(gt|#62);", ">", RegexOptions.IgnoreCase);
            Htmlstring = Regex.Replace(Htmlstring, @"&(nbsp|#160);", " ", RegexOptions.IgnoreCase);
            Htmlstring = Regex.Replace(Htmlstring, @"&(iexcl|#161);", "\xa1", RegexOptions.IgnoreCase);
            Htmlstring = Regex.Replace(Htmlstring, @"&(cent|#162);", "\xa2", RegexOptions.IgnoreCase);
            Htmlstring = Regex.Replace(Htmlstring, @"&(pound|#163);", "\xa3", RegexOptions.IgnoreCase);
            Htmlstring = Regex.Replace(Htmlstring, @"&(copy|#169);", "\xa9", RegexOptions.IgnoreCase);

            Htmlstring = Regex.Replace(Htmlstring, @"&#(\d+);", "", RegexOptions.IgnoreCase);
            Htmlstring.Replace("<", "");
            Htmlstring.Replace(">", "");
            Htmlstring.Replace("\r\n", "");
            Htmlstring.Replace("&emsp;", "");
            Htmlstring = HttpContext.Current.Server.HtmlEncode(Htmlstring).Trim();
            return Htmlstring;
        }
        #endregion

        #region 清除HTML标记且返回相应的长度
        public static string DropHTML(string Htmlstring, int strLen)
        {
            return CutString(DropHTML(Htmlstring), strLen);
        }
        #endregion

        #region TXT代码转换成HTML格式
        /// <summary>
        /// 字符串字符处理
        /// </summary>
        /// <param name="chr">等待处理的字符串</param>
        /// <returns>处理后的字符串</returns>
        /// //把TXT代码转换成HTML格式
        public static String ToHtml(string Input)
        {
            StringBuilder sb = new StringBuilder(Input);
            sb.Replace("'", "&apos;");
            sb.Replace("&", "&amp;");
            sb.Replace("<", "&lt;");
            sb.Replace(">", "&gt;");
            sb.Replace("\r\n", "<br />");
            sb.Replace("\n", "<br />");
            sb.Replace("\t", " ");
            //sb.Replace(" ", "&nbsp;");
            return sb.ToString();
        }
        #endregion

        #region HTML代码转换成TXT格式
        /// <summary>
        /// 字符串字符处理
        /// </summary>
        /// <param name="chr">等待处理的字符串</param>
        /// <returns>处理后的字符串</returns>
        /// //把HTML代码转换成TXT格式
        public static String ToTxt(String Input)
        {
            StringBuilder sb = new StringBuilder(Input);
            sb.Replace("&nbsp;", " ");
            sb.Replace("<br>", "\r\n");
            sb.Replace("<br>", "\n");
            sb.Replace("<br />", "\n");
            sb.Replace("<br />", "\r\n");
            sb.Replace("&lt;", "<");
            sb.Replace("&gt;", ">");
            sb.Replace("&amp;", "&");
            return sb.ToString();
        }
        #endregion

        #region 检测是否有Sql危险字符
        /// <summary>
        /// 检测是否有Sql危险字符
        /// </summary>
        /// <param name="str">要判断字符串</param>
        /// <returns>判断结果</returns>
        public static bool IsSafeSqlString(string str)
        {
            return !Regex.IsMatch(str, @"[-|;|,|\/|\(|\)|\[|\]|\}|\{|%|@|\*|!|\']");
        }

        /// <summary>
        /// 检查危险字符
        /// </summary>
        /// <param name="Input"></param>
        /// <returns></returns>
        public static string Filter(string sInput)
        {
            if (sInput == null || sInput == "")
                return null;
            string sInput1 = sInput.ToLower();
            string output = sInput;
            string pattern = @"*|and|exec|insert|select|delete|update|count|master|truncate|declare|char(|mid(|chr(|'";
            if (Regex.Match(sInput1, Regex.Escape(pattern), RegexOptions.Compiled | RegexOptions.IgnoreCase).Success)
            {
                throw new Exception("字符串中含有非法字符!");
            }
            else
            {
                output = output.Replace("'", "''");
            }
            return output;
        }

        /// <summary> 
        /// 检查过滤设定的危险字符
        /// </summary> 
        /// <param name="InText">要过滤的字符串 </param> 
        /// <returns>如果参数存在不安全字符,则返回true </returns> 
        public static bool SqlFilter(string word, string InText)
        {
            if (InText == null)
                return false;
            foreach (string i in word.Split('|'))
            {
                if ((InText.ToLower().IndexOf(i + " ") > -1) || (InText.ToLower().IndexOf(" " + i) > -1))
                {
                    return true;
                }
            }
            return false;
        }
        #endregion

        #region 过滤特殊字符
        /// <summary>
        /// 过滤特殊字符
        /// </summary>
        /// <param name="Input"></param>
        /// <returns></returns>
        public static string Htmls(string Input)
        {
            if (Input != string.Empty && Input != null)
            {
                string ihtml = Input.ToLower();
                ihtml = ihtml.Replace("<script", "&lt;script");
                ihtml = ihtml.Replace("script>", "script&gt;");
                ihtml = ihtml.Replace("<%", "&lt;%");
                ihtml = ihtml.Replace("%>", "%&gt;");
                ihtml = ihtml.Replace("<$", "&lt;$");
                ihtml = ihtml.Replace("$>", "$&gt;");
                return ihtml;
            }
            else
            {
                return string.Empty;
            }
        }
        #endregion

        #region 检查是否为IP地址
        /// <summary>
        /// 是否为ip
        /// </summary>
        /// <param name="ip"></param>
        /// <returns></returns>
        public static bool IsIP(string ip)
        {
            return Regex.IsMatch(ip, @"^((2[0-4]\d|25[0-5]|[01]?\d\d?)\.){3}(2[0-4]\d|25[0-5]|[01]?\d\d?)$");
        }
        #endregion

        #region 获得当前绝对路径
        /// <summary>
        /// 获得当前绝对路径
        /// </summary>
        /// <param name="strPath">指定的路径</param>
        /// <returns>绝对路径</returns>
        public static string GetMapPath(string strPath)
        {
            if (strPath.ToLower().StartsWith("http://"))
            {
                return strPath;
            }
            if (HttpContext.Current != null)
            {
                return HttpContext.Current.Server.MapPath(strPath);
            }
            else //非web程序引用
            {
                strPath = strPath.Replace("/", "\\");
                if (strPath.StartsWith("\\"))
                {
                    strPath = strPath.Substring(strPath.IndexOf('\\', 1)).TrimStart('\\');
                }
                return System.IO.Path.Combine(AppDomain.CurrentDomain.BaseDirectory, strPath);
            }
        }
        #endregion

        #region 文件操作
        /// <summary>
        /// 删除单个文件
        /// </summary>
        /// <param name="_filepath">文件相对路径</param>
        public static bool DeleteFile(string _filepath)
        {
            if (string.IsNullOrEmpty(_filepath))
            {
                return false;
            }
            string fullpath = GetMapPath(_filepath);
            if (File.Exists(fullpath))
            {
                File.Delete(fullpath);
                return true;
            }
            return false;
        }

        /// <summary>
        /// 删除上传的文件(及缩略图)
        /// </summary>
        /// <param name="_filepath"></param>
        public static void DeleteUpFile(string _filepath)
        {
            if (string.IsNullOrEmpty(_filepath))
            {
                return;
            }
            string fullpath = GetMapPath(_filepath); //原图
            if (File.Exists(fullpath))
            {
                File.Delete(fullpath);
            }
            if (_filepath.LastIndexOf("/") >= 0)
            {
                string thumbnailpath = _filepath.Substring(0, _filepath.LastIndexOf("/")) + "mall_" + _filepath.Substring(_filepath.LastIndexOf("/") + 1);
                string fullTPATH = GetMapPath(thumbnailpath); //宿略图
                if (File.Exists(fullTPATH))
                {
                    File.Delete(fullTPATH);
                }
            }
        }

        /// <summary>
        /// 删除内容图片
        /// </summary>
        /// <param name="content">内容</param>
        /// <param name="startstr">匹配开头字符串</param>
        public static void DeleteContentPic(string content, string startstr)
        {
            if (string.IsNullOrEmpty(content))
            {
                return;
            }
            Regex reg = new Regex("IMG[^>]*?src\\s*=\\s*(?:\"(?<1>[^\"]*)\"|'(?<1>[^\']*)')", RegexOptions.IgnoreCase);
            MatchCollection m = reg.Matches(content);
            foreach (Match math in m)
            {
                string imgUrl = math.Groups[1].Value;
                string fullPath = GetMapPath(imgUrl);
                try
                {
                    if (imgUrl.ToLower().StartsWith(startstr.ToLower()) && File.Exists(fullPath))
                    {
                        File.Delete(fullPath);
                    }
                }
                catch { }
            }
        }

        /// <summary>
        /// 删除指定文件夹
        /// </summary>
        /// <param name="_dirpath">文件相对路径</param>
        public static bool DeleteDirectory(string _dirpath)
        {
            if (string.IsNullOrEmpty(_dirpath))
            {
                return false;
            }
            string fullpath = GetMapPath(_dirpath);
            if (Directory.Exists(fullpath))
            {
                Directory.Delete(fullpath, true);
                return true;
            }
            return false;
        }

        /// <summary>
        /// 修改指定文件夹名称
        /// </summary>
        /// <param name="old_dirpath">旧相对路径</param>
        /// <param name="new_dirpath">新相对路径</param>
        /// <returns>bool</returns>
        public static bool MoveDirectory(string old_dirpath, string new_dirpath)
        {
            if (string.IsNullOrEmpty(old_dirpath))
            {
                return false;
            }
            string fulloldpath = GetMapPath(old_dirpath);
            string fullnewpath = GetMapPath(new_dirpath);
            if (Directory.Exists(fulloldpath))
            {
                Directory.Move(fulloldpath, fullnewpath);
                return true;
            }
            return false;
        }

        /// <summary>
        /// 返回文件大小KB
        /// </summary>
        /// <param name="_filepath">文件相对路径</param>
        /// <returns>int</returns>
        public static int GetFileSize(string _filepath)
        {
            if (string.IsNullOrEmpty(_filepath))
            {
                return 0;
            }
            string fullpath = GetMapPath(_filepath);
            if (File.Exists(fullpath))
            {
                FileInfo fileInfo = new FileInfo(fullpath);
                return ((int)fileInfo.Length) / 1024;
            }
            return 0;
        }

        /// <summary>
        /// 返回文件扩展名,不含“.”
        /// </summary>
        /// <param name="_filepath">文件全名称</param>
        /// <returns>string</returns>
        public static string GetFileExt(string _filepath)
        {
            if (string.IsNullOrEmpty(_filepath))
            {
                return "";
            }
            if (_filepath.LastIndexOf(".") > 0)
            {
                return _filepath.Substring(_filepath.LastIndexOf(".") + 1); //文件扩展名,不含“.”
            }
            return "";
        }

        /// <summary>
        /// 返回文件名,不含路径
        /// </summary>
        /// <param name="_filepath">文件相对路径</param>
        /// <returns>string</returns>
        public static string GetFileName(string _filepath)
        {
            return _filepath.Substring(_filepath.LastIndexOf(@"/") + 1);
        }

        /// <summary>
        /// 文件是否存在
        /// </summary>
        /// <param name="_filepath">文件相对路径</param>
        /// <returns>bool</returns>
        public static bool FileExists(string _filepath)
        {
            string fullpath = GetMapPath(_filepath);
            if (File.Exists(fullpath))
            {
                return true;
            }
            return false;
        }

        /// <summary>
        /// 获得远程字符串
        /// </summary>
        public static string GetDomainStr(string key, string uriPath)
        {
            string result = CacheHelper.Get(key) as string;
            if (result == null)
            {
                System.Net.WebClient client = new System.Net.WebClient();
                try
                {
                    client.Encoding = System.Text.Encoding.UTF8;
                    result = client.DownloadString(uriPath);
                }
                catch
                {
                    result = "暂时无法连接!";
                }
                CacheHelper.Insert(key, result, 60);
            }

            return result;
        }

        #endregion

        #region 读取或写入cookie
        /// <summary>
        /// 写cookie值
        /// </summary>
        /// <param name="strName">名称</param>
        /// <param name="strValue"></param>
        public static void WriteCookie(string strName, string strValue)
        {
            HttpCookie cookie = HttpContext.Current.Request.Cookies[strName];
            if (cookie == null)
            {
                cookie = new HttpCookie(strName);
            }
            cookie.Value = UrlEncode(strValue);
            HttpContext.Current.Response.AppendCookie(cookie);
        }

        /// <summary>
        /// 写cookie值
        /// </summary>
        /// <param name="strName">名称</param>
        /// <param name="strValue"></param>
        public static void WriteCookie(string strName, string key, string strValue)
        {
            HttpCookie cookie = HttpContext.Current.Request.Cookies[strName];
            if (cookie == null)
            {
                cookie = new HttpCookie(strName);
            }
            cookie[key] = UrlEncode(strValue);
            HttpContext.Current.Response.AppendCookie(cookie);
        }

        /// <summary>
        /// 写cookie值
        /// </summary>
        /// <param name="strName">名称</param>
        /// <param name="strValue"></param>
        public static void WriteCookie(string strName, string key, string strValue, int expires)
        {
            HttpCookie cookie = HttpContext.Current.Request.Cookies[strName];
            if (cookie == null)
            {
                cookie = new HttpCookie(strName);
            }
            cookie[key] = UrlEncode(strValue);
            cookie.Expires = DateTime.Now.AddMinutes(expires);
            HttpContext.Current.Response.AppendCookie(cookie);
        }

        /// <summary>
        /// 写cookie值
        /// </summary>
        /// <param name="strName">名称</param>
        /// <param name="strValue"></param>
        /// <param name="strValue">过期时间(分钟)</param>
        public static void WriteCookie(string strName, string strValue, int expires)
        {
            HttpCookie cookie = HttpContext.Current.Request.Cookies[strName];
            if (cookie == null)
            {
                cookie = new HttpCookie(strName);
            }
            cookie.Value = UrlEncode(strValue);
            cookie.Expires = DateTime.Now.AddMinutes(expires);
            HttpContext.Current.Response.AppendCookie(cookie);
        }

        /// <summary>
        /// 读cookie值
        /// </summary>
        /// <param name="strName">名称</param>
        /// <returns>cookie值</returns>
        public static string GetCookie(string strName)
        {
            if (HttpContext.Current.Request.Cookies != null && HttpContext.Current.Request.Cookies[strName] != null)
                return UrlDecode(HttpContext.Current.Request.Cookies[strName].Value.ToString());
            return "";
        }

        /// <summary>
        /// 读cookie值
        /// </summary>
        /// <param name="strName">名称</param>
        /// <returns>cookie值</returns>
        public static string GetCookie(string strName, string key)
        {
            if (HttpContext.Current.Request.Cookies != null && HttpContext.Current.Request.Cookies[strName] != null && HttpContext.Current.Request.Cookies[strName][key] != null)
                return UrlDecode(HttpContext.Current.Request.Cookies[strName][key].ToString());

            return "";
        }

        /// <summary>
        /// 清除cookie
        /// </summary>
        /// <param name="strName">名称</param>
        /// <returns>cookie值</returns>
        public static void ClearCookie(string strName = "")
        {
            if (HttpContext.Current.Request.Cookies != null && string.IsNullOrWhiteSpace(strName))
                HttpContext.Current.Request.Cookies.Clear();
            if (HttpContext.Current.Request.Cookies[strName] != null)
                HttpContext.Current.Request.Cookies[strName].Expires = DateTime.Now.AddMilliseconds(-1);

        }
        #endregion

        #region 替换指定的字符串
        /// <summary>
        /// 替换指定的字符串
        /// </summary>
        /// <param name="originalStr">原字符串</param>
        /// <param name="oldStr">旧字符串</param>
        /// <param name="newStr">新字符串</param>
        /// <returns></returns>
        public static string ReplaceStr(string originalStr, string oldStr, string newStr)
        {
            if (string.IsNullOrEmpty(oldStr))
            {
                return "";
            }
            return originalStr.Replace(oldStr, newStr);
        }
        #endregion


        #region URL处理
        /// <summary>
        /// URL字符编码
        /// </summary>
        public static string UrlEncode(string str)
        {
            if (string.IsNullOrEmpty(str))
            {
                return "";
            }
            str = str.Replace("'", "");
            return HttpContext.Current.Server.UrlEncode(str);
        }

        /// <summary>
        /// URL字符解码
        /// </summary>
        public static string UrlDecode(string str)
        {
            if (string.IsNullOrEmpty(str))
            {
                return "";
            }
            return HttpContext.Current.Server.UrlDecode(str);
        }
        #endregion

        #region URL请求数据
        /// <summary>
        /// HTTP POST方式请求数据
        /// </summary>
        /// <param name="url">URL.</param>
        /// <param name="param">POST的数据</param>
        /// <returns></returns>
        public static string HttpPost(string url, string param)
        {
            HttpWebRequest request = (HttpWebRequest)HttpWebRequest.Create(url);
            request.Method = "POST";
            request.ContentType = "application/x-www-form-urlencoded";
            request.Accept = "*/*";
            request.Timeout = 15000;
            request.AllowAutoRedirect = false;

            StreamWriter requestStream = null;
            WebResponse response = null;
            string responseStr = null;

            try
            {
                requestStream = new StreamWriter(request.GetRequestStream());
                requestStream.Write(param);
                requestStream.Close();

                response = request.GetResponse();
                if (response != null)
                {
                    StreamReader reader = new StreamReader(response.GetResponseStream(), Encoding.UTF8);
                    responseStr = reader.ReadToEnd();
                    reader.Close();
                }
            }
            catch (Exception)
            {
                throw;
            }
            finally
            {
                request = null;
                requestStream = null;
                response = null;
            }

            return responseStr;
        }

        /// <summary>
        /// HTTP GET方式请求数据.
        /// </summary>
        /// <param name="url">URL.</param>
        /// <returns></returns>
        public static string HttpGet(string url)
        {
            HttpWebRequest request = (HttpWebRequest)HttpWebRequest.Create(url);
            request.Method = "GET";
            //request.ContentType = "application/x-www-form-urlencoded";
            request.Accept = "*/*";
            request.Timeout = 15000;
            request.AllowAutoRedirect = false;

            WebResponse response = null;
            string responseStr = null;

            try
            {
                response = request.GetResponse();

                if (response != null)
                {
                    StreamReader reader = new StreamReader(response.GetResponseStream(), Encoding.UTF8);
                    responseStr = reader.ReadToEnd();
                    reader.Close();
                }
            }
            catch (Exception)
            {
                throw;
            }
            finally
            {
                request = null;
                response = null;
            }

            return responseStr;
        }

        /// <summary>
        /// 执行URL获取页面内容
        /// </summary>
        public static string UrlExecute(string urlPath)
        {
            if (string.IsNullOrEmpty(urlPath))
            {
                return "error";
            }
            StringWriter sw = new StringWriter();
            try
            {
                HttpContext.Current.Server.Execute(urlPath, sw);
                return sw.ToString();
            }
            catch (Exception)
            {
                return "error";
            }
            finally
            {
                sw.Close();
                sw.Dispose();
            }
        }
        #endregion

        #region WebClient GET

        /// <summary>
        /// 异步请求 Get方式
        /// </summary>
        /// <param name="url"></param>
        /// <returns></returns>
        public static string HttpGetAsync(string url)
        {
            HttpWebRequest request = (HttpWebRequest)HttpWebRequest.Create(url);
            request.Method = "GET";
            request.Accept = "*/*";
            request.Timeout = 15000;
            request.AllowAutoRedirect = false;

            WebResponse response = null;
            Task<string> responseStr = null;

            try
            {
                response = request.GetResponseAsync().Result;

                if (response != null)
                {
                    StreamReader reader = new StreamReader(response.GetResponseStream(), Encoding.UTF8);
                    responseStr = reader.ReadToEndAsync();
                    reader.Close();
                }
            }
            catch (Exception)
            {
                throw;
            }
            finally
            {
                request = null;
                response = null;
            }

            return responseStr.Result;
        }
        /// <summary>
        /// 异步请求 Post方式
        /// </summary>
        /// <param name="url"></param>
        /// <returns></returns>
        public static string HttpPostAsync(string url,string param)
        {
            HttpWebRequest request = (HttpWebRequest)HttpWebRequest.Create(url);
            request.Method = "POST";
            request.ContentType = "application/x-www-form-urlencoded";
            request.Accept = "*/*";
            request.Timeout = 15000;
            request.AllowAutoRedirect = false;

            StreamWriter requestStream = null;
            WebResponse response = null;
            Task<string> responseStr = null;

            try
            {
                requestStream = new StreamWriter(request.GetRequestStreamAsync().Result);
                requestStream.Write(param);
                requestStream.Close();

                response = request.GetResponseAsync().Result;
                if (response != null)
                {
                    StreamReader reader = new StreamReader(response.GetResponseStream(), Encoding.UTF8);
                    responseStr = reader.ReadToEndAsync();
                    reader.Close();
                }
            }
            catch (Exception)
            {
                throw;
            }
            finally
            {
                request = null;
                requestStream = null;
                response = null;
            }

            return responseStr.Result;
        }

        public static string HTTP_GET(string url)
        {
            return HTTP_GET(url, Encoding.UTF8);
        }
        public static string HTTP_GET(string url, Encoding Encode)
        {
            string result = string.Empty;
            try
            {
                var client = new WebClient();
                client.Encoding = Encode;
                result = client.DownloadString(url);
            }
            catch (Exception ex)
            {
                result = "ERR:" + ex.Message;
            }
            return result;
        }

        #endregion

        #region WebClient POST
        public static string HTTP_POST(string url, string data)
        {
            return HTTP_POST(url, data, Encoding.UTF8);
        }
        /// <summary>
        /// post方式请求
        /// </summary>
        /// <param name="url">请求路径</param>
        /// <param name="postString">请求数据</param>
        /// <param name="ContentType">默认application/x-www-form-urlencoded</param>
        /// <param name="Encode">编码:1 UTF8  2 ASCII  其他 Default   默认UTF8</param>
        /// <returns></returns>
        public static string HTTP_POST(string url, string data, Encoding Encode, string ContentType = "application/x-www-form-urlencoded")
        {
            string result = string.Empty;
            try
            {
                byte[] postData = Encode.GetBytes(data);
                WebClient webClient = new WebClient();
                webClient.Headers.Add("Content-Type", ContentType);//采取POST方式必须加的header
                byte[] responseData = webClient.UploadData(url, "POST", postData);//得到返回字符流  
                result = Encode.GetString(responseData); ;//解码
            }
            catch (Exception ex)
            {
                result = "ERR:" + ex.Message;
            }
            return result;
        }

        #endregion

        #region DataSet分页
        public static DataSet SplitDataSet(DataSet ds, int pageSize, int pageIndex)
        {
            DataSet vds = new DataSet();
            vds = ds.Clone();
            if (pageIndex < 1) pageIndex = 1;//如果小于1,取第一页
            if ((ds.Tables[0].Rows.Count + pageSize) <= (pageSize * pageIndex)) pageIndex = 1;
            int fromIndex = pageSize * (pageIndex - 1);//开始行
            int toIndex = pageSize * pageIndex - 1; //结束行
            for (int i = fromIndex; i <= toIndex; i++)
            {
                if (i >= (ds.Tables[0].Rows.Count)) //到达这一行,退出
                    break;
                vds.Tables[0].ImportRow(ds.Tables[0].Rows[i]);
            }
            ds.Dispose();
            return vds;
        }
        #endregion

        #region JsonToDataTable
        public static DataTable JsonToDataTable(string strJson, string addColumnName = "")
        {

            DataTable tb = null;
            //获取数据  
            Regex rg = new Regex(@"(?<={)[^}]+(?=})");
            MatchCollection mc = rg.Matches(strJson);
            for (int i = 0; i < mc.Count; i++)
            {
                string strRow = mc[i].Value;
                string[] strRows = strRow.Split(',');
                string json = "{" + mc[i].Value.Replace("\"", "\\\"") + "}";
                //创建表  
                if (tb == null)
                {
                    tb = new DataTable();
                    tb.TableName = "";
                    foreach (string str in strRows)
                    {
                        DataColumn dc = new DataColumn();
                        string[] strCell = str.Split(':');

                        dc.ColumnName = strCell[0].ToString().Replace("\"", "").Trim();
                        tb.Columns.Add(dc);
                    }
                    if (addColumnName != "")
                    {
                        DataColumn dc = new DataColumn();
                        dc.ColumnName = addColumnName;
                        tb.Columns.Add(dc);
                    }
                    tb.AcceptChanges();
                }

                //增加内容  
                DataRow dr = tb.NewRow();
                for (int r = 0; r < strRows.Length; r++)
                {
                    dr[r] = strRows[r].Split(':')[1].Trim().Replace("", ",").Replace("", ":").Replace("/", "").Replace("\"", "").Trim();
                }
                if (addColumnName != "")
                {
                    dr[strRows.Length] = json;
                }
                tb.Rows.Add(dr);
                tb.AcceptChanges();
            }

            return tb;
        }
        #endregion

        #region 数据格式转换
        /// <summary>
        /// 转换任意成SQL语句可以识别的日期格式字符串
        /// </summary>
        /// <param name="data">用户输入时间或字符串</param>
        /// <returns></returns>
        public static string ToSQLDate(object date)
        {
            if (date != null && date.ToString() != DateTime.MinValue.ToString())
            {
                try
                {
                    return DateTime.Parse(date.ToString()).ToString("yyyy-MM-dd");
                }
                catch
                {
                    return date.ToString();
                }
            }
            else
            {
                return String.Empty;
            }
        }
        /// <summary>
        /// 转换成系统计量数值格式
        /// </summary>
        /// <param name="quantity"></param>
        /// <returns></returns>
        public static string ToQuantity(object quantity)
        {
            int quantityBit = 0;
            string result = "";
            if (quantity != null && quantity.ToString().Length > 0)
            {
                try
                {
                    result = String.Format("{0:" + quantityBit + "}", decimal.Parse(quantity.ToString()));
                }
                catch
                {
                    result = String.Format("{0:" + quantityBit + "}", 0);
                }
            }
            else
            {
                result = String.Format("{0:" + quantityBit + "}", 0);
            }
            return result;
        }
        /// <summary>
        /// 转换成整数
        /// </summary>
        /// <param name="value"></param>
        /// <returns></returns>
        public static int ToInt(object value)
        {
            int result = 0;
            try
            {
                result = Convert.ToInt32(value);
            }
            catch
            {
                result = 0;
            }
            return result;
        }
        /// <summary>
        /// 转换SQL特殊字符
        /// </summary>
        /// <param name="value"></param>
        /// <returns></returns>
        public static string FormatSQL(string value)
        {
            return value.Trim().Replace("'", "''");
        }
        #endregion

        #region 微信签名获取

        public static int ConvertDateTimeInt(System.DateTime time)
        {
            System.DateTime startTime = TimeZone.CurrentTimeZone.ToLocalTime(new System.DateTime(1970, 1, 1));
            return (int)(time - startTime).TotalSeconds;
        }

        public static string md5str16(string password)
        {
            MD5CryptoServiceProvider hashmd5 = new MD5CryptoServiceProvider();
            return BitConverter.ToString(hashmd5.ComputeHash(Encoding.Default.GetBytes(password))).Replace("-", "").ToLower().Substring(8, 16);
        }

        public static string GetSHA(string Pwd)
        {
            byte[] data = System.Text.Encoding.Default.GetBytes(Pwd);//以字节方式存储
            System.Security.Cryptography.SHA1 sha1 = new System.Security.Cryptography.SHA1CryptoServiceProvider();
            byte[] result = sha1.ComputeHash(data);//得到哈希值
            return System.BitConverter.ToString(result).Replace("-", ""); //转换成为字符串的显示
        }
        #endregion

        #region 获取当前日期
        /// <summary>
        /// 获取系统当前日期字符串
        /// </summary>
        /// <returns></returns>
        public static string NowStr(string format = "yyyy-MM-dd HH:mm:ss")
        {
            return Now().ToString(format);
        }
        /// <summary>
        /// 获取系统当前日期
        /// </summary>
        /// <returns></returns>
        public static DateTime Now()
        {
            return DateTime.Now;
        }
        #endregion

        #region 获取当前IP地址

        public static string GetLocalIP()
        {
            try
            {
                string HostName = Dns.GetHostName(); //得到主机名
                IPHostEntry IpEntry = Dns.GetHostEntry(HostName);
                for (int i = 0; i < IpEntry.AddressList.Length; i++)
                {
                    if (IpEntry.AddressList[i].AddressFamily == AddressFamily.InterNetwork)
                    {
                        return IpEntry.AddressList[i].ToString();
                    }
                }
                return "";
            }
            catch (Exception ex)
            {
                return "";
            }
        }
        #endregion

        #region 判断字符串是否为空
        /// <summary>
        /// 字符串是否为空
        /// </summary>
        /// <param name="str"></param>
        /// <returns></returns>
        public static bool IsEmpty(string str)
        {
            return string.IsNullOrWhiteSpace(str);
        }
        #endregion

        #region 获取时间差
        /// <summary>
        /// 获取当前时间与指定时间差
        /// </summary>
        /// <param name="startTime">时间</param>
        /// <returns>***前</returns>
        public static string TimeDifference(DateTime startTime)
        {
            TimeSpan ts = TimeDifference(startTime, DateTime.Now);
            if (ts.TotalDays > 60)
            {
                return startTime.ToShortDateString();
            }
            else if (ts.TotalDays > 30)
            {
                return "1个月前";
            }
            else if (ts.TotalDays > 14)
            {
                return "2周前";
            }
            else if (ts.TotalDays > 7)
            {
                return "1周前";
            }
            else if (ts.TotalDays > 1)
            {
                return string.Format("{0}天前", (int)Math.Floor(ts.TotalDays));
            }
            else if (ts.TotalHours > 1)
            {
                return string.Format("{0}小时前", (int)Math.Floor(ts.TotalHours));
            }
            else if (ts.TotalMinutes > 1)
            {
                return string.Format("{0}分钟前", (int)Math.Floor(ts.TotalMinutes));
            }
            else if (ts.TotalSeconds >= 1)
            {
                return string.Format("{0}秒前", (int)Math.Floor(ts.TotalSeconds));
            }
            else
            {
                return "1秒前";
            }
        }

        /// <summary>
        /// 获取两个时间差
        /// </summary>
        /// <param name="startTime">开始时间</param>
        /// <param name="endTime">结束时间</param>
        /// <returns>TimeSpan</returns>
        public static TimeSpan TimeDifference(DateTime startTime, DateTime endTime)
        {
            TimeSpan ts = endTime - startTime;
            return ts;
        }


        #endregion

    }

 

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本文链接:https://www.cnblogs.com/wangbin0582/p/9040112.html