using System;using System.Collections.Generic;using System.Configuration;using System.IO;using System.Linq;using System.Net;using System.Text;using System.Web;using System.Web.Configuration;using System.Web.Mvc;using System.Web.Security;using System.Xml;using Newtonsoft.Json;using Travel.Business.Order;using Travel.WeChat.ViewModel.WeiPay;namespace Travel.WeChat.ToolClass{    public class WeChatPayHelper    {        /// 
        /// 微信客户端内部提交支付申请        /// 
        ///         /// 
             [HttpGet]        public static  string GoToWeCharJSPay(Guid orderGuid, string token)        {            var weCharUrl = "https://api.mch.weixin.qq.com/pay/unifiedorder";            var model = OrderInfoManager.Instance.GetById(orderGuid);            unifiedorder unOrder = new unifiedorder();            unOrder.appid = ConfigurationManager.AppSettings["wx_appid"];            unOrder.mch_id = ConfigurationManager.AppSettings["wx_mch_id"];            unOrder.nonce_str = Guid.NewGuid().ToString().Replace("-", "");            unOrder.sign = "";            unOrder.body = model.ProductName;            unOrder.out_trade_no = model.OrderCode;            //payAmountmodel.PayAmount            unOrder.total_fee = Convert.ToInt32(model.PayAmount * 100);            unOrder.spbill_create_ip = GetWebClientIp();            unOrder.notify_url = ConfigurationManager.AppSettings["wechatUrl"] + "WeChatSite/WeChatPay/ProcessingCallback";            unOrder.trade_type = "JSAPI";            unOrder.openid = token;            unOrder.device_info = "WEB";            var dc = new Dictionary
     
      ()            {                {
    "appid",unOrder.appid},                {
    "mch_id",unOrder.mch_id},                {
    "total_fee",unOrder.total_fee},                 {
    "out_trade_no",unOrder.out_trade_no},                {
    "body",unOrder.body},                {
    "notify_url",unOrder.notify_url},                {
    "trade_type",unOrder.trade_type},                {
    "nonce_str",unOrder.nonce_str},                {
    "spbill_create_ip",unOrder.spbill_create_ip},                {
    "openid",unOrder.openid},                //{"scene_info","h5_info"}            };            dc.Add("sign", GetSignString(dc));//签名            //2.将参数转换为xml格式            var sb = new StringBuilder();            sb.Append("
      
       ");            foreach (var d in dc)            {                sb.Append("<" + d.Key + ">" + d.Value + "
       ");            }            sb.Append("
      ");            //应用场景信息            //1.创建请求连接            var request = (HttpWebRequest)WebRequest.Create(weCharUrl);            //2.设置参数            var data = Encoding.UTF8.GetBytes(sb.ToString());            //4.设置属性            request.Method = "POST";            request.ContentType = "application/x-www-form-urlencoded";            request.ContentLength = data.Length;            //5.将转换后的参数以文件流的形式写入到请求中            using (var stream = request.GetRequestStream())            {                stream.Write(data, 0, data.Length);            }            //6.声明变量，获取响应            var response = (HttpWebResponse)request.GetResponse();            //7.以文件流的方式读取响应结果            var responseString = new StreamReader(response.GetResponseStream()).ReadToEnd();            //            return responseString;        }        /// 
      
        /// 获取客户端ip        /// 
        /// 
      
       返回客户端IP地址
              public static string GetWebClientIp()        {            HttpRequest request = HttpContext.Current.Request;            string result = request.ServerVariables["HTTP_X_FORWARDED_FOR"];            string a = request.UserHostAddress;            if (String.IsNullOrEmpty(result))            {                result = request.ServerVariables["REMOTE_ADDR"];            }            if (String.IsNullOrEmpty(result))            {                result = request.UserHostAddress;            }            if (String.IsNullOrEmpty(result))            {                result = "0.0.0.0";            }            return result;            //string userIP = "IP";            //try            //{            //    if (System.Web.HttpContext.Current == null            //|| System.Web.HttpContext.Current.Request == null            //|| System.Web.HttpContext.Current.Request.ServerVariables == null)            //        return "";            //    string CustomerIP = "";            //    //CDN加速后取到的IP               //    CustomerIP = System.Web.HttpContext.Current.Request.Headers["Cdn-Src-Ip"];            //    if (!string.IsNullOrEmpty(CustomerIP))            //    {            //        return CustomerIP;            //    }            //    CustomerIP = System.Web.HttpContext.Current.Request.ServerVariables["HTTP_X_FORWARDED_FOR"];            //    if (!String.IsNullOrEmpty(CustomerIP))            //        return CustomerIP;            //    if (System.Web.HttpContext.Current.Request.ServerVariables["HTTP_VIA"] != null)            //    {            //        CustomerIP = System.Web.HttpContext.Current.Request.ServerVariables["HTTP_X_FORWARDED_FOR"];            //        if (CustomerIP == null)            //            CustomerIP = System.Web.HttpContext.Current.Request.ServerVariables["REMOTE_ADDR"];            //    }            //    else            //    {            //        CustomerIP = System.Web.HttpContext.Current.Request.ServerVariables["REMOTE_ADDR"];            //    }            //    if (string.Compare(CustomerIP, "unknown", true) == 0)            //        return System.Web.HttpContext.Current.Request.UserHostAddress;            //    return CustomerIP;            //}            //catch { }            //return userIP;            string user_IP;            if (HttpContext.Current.Request.ServerVariables["HTTP_VIA"] != null)            {                user_IP = HttpContext.Current.Request.ServerVariables["HTTP_X_FORWARDED_FOR"].ToString();            }            else            {                user_IP = HttpContext.Current.Request.ServerVariables["REMOTE_ADDR"].ToString();            }            return user_IP;        }        /// 
      
        /// 获取Sign签名        /// 
        /// 
      键值对集合        /// 
      
       字符串类型的签名
              public static string GetSignString(Dictionary
      
        dic)        {            string key = WebConfigurationManager.AppSettings["wx_key"].ToString(); ;//商户平台 API安全里面设置的KEY  32位长度            //排序            dic = dic.OrderBy(d => d.Key).ToDictionary(d => d.Key, d => d.Value);            //连接字段            var sign = dic.Aggregate("", (current, d) => current + (d.Key + "=" + d.Value + "&"));            sign += "key=" + key;            //MD5            sign = FormsAuthentication.HashPasswordForStoringInConfigFile(sign, "MD5").ToUpper();            return sign;        }        /// 
       
        /// 时间格式化        /// 
        /// 
               /// 
               public static string Format(DateTime date)        {            var dates = "";            dates += date.Year;            dates += date.Month;            dates += date.Date;            dates += date.Hour;            dates += date.Minute;            dates += date.Second;            return dates;        }        /// 
       
        /// 获取时间戳        /// 
        /// 
               public static string GetTimeStamp()        {            TimeSpan ts = DateTime.UtcNow - new DateTime(1970, 1, 1, 0, 0, 0, 0);            return Convert.ToInt64(ts.TotalSeconds).ToString();        }        #region 微信H5支付，外部浏览器调起支付        /// 
       
        /// 根据订单编号,提交订单到微信,获取跳转的地址        /// 
        /// 
       订单编号        /// 
       
        要跳转的地址
               [HttpPost]        public static  string PostToWeChar(Guid OrderGuid)        {            var model = OrderInfoManager.Instance.GetById(OrderGuid);            var weCharUrl = "https://api.mch.weixin.qq.com/pay/unifiedorder";            var si = new h5_info();            si.type = "Wap";            si.wap_url = ConfigurationManager.AppSettings["wechatUrl"];            si.wap_name = "驿马旅行";            var uo = new unifiedorder();            uo.appid = ConfigurationManager.AppSettings["wx_appid"];            uo.mch_id = ConfigurationManager.AppSettings["wx_mch_id"];            uo.total_fee = Convert.ToInt32(model.PayAmount) * 100;//单位元转换为分            uo.out_trade_no = model.OrderCode;            uo.body = model.ProductName;            uo.notify_url = ConfigurationManager.AppSettings["wechatUrl"] + "WeChatSite/Share/Pay";            uo.trade_type = "MWEB";//h5的支付类型            uo.nonce_str = Guid.NewGuid().ToString().Replace("-", ""); ;//随机字符串            uo.spbill_create_ip = GetWebClientIp();            var siJson = JsonConvert.SerializeObject(si);            var dc = new Dictionary
       
        ()            {                {
    "appid",uo.appid},                {
    "mch_id",uo.mch_id},                {
    "total_fee",uo.total_fee},                {
    "out_trade_no",uo.out_trade_no},                {
    "body",uo.body},                {
    "notify_url",uo.notify_url},                {
    "trade_type",uo.trade_type},                {
    "nonce_str",uo.nonce_str},                {
    "spbill_create_ip",uo.spbill_create_ip},                //{"scene_info","h5_info"}            };            dc.Add("sign", GetSignString(dc));//签名            var sb = new StringBuilder();            sb.Append("
        
         ");            foreach (var d in dc)            {                if (d.Key == "scene_info")                {                    sb.Append("<" + d.Key + ">{\"h5_info\":");                    sb.Append(siJson);                    sb.Append("}
         ");                }                else                {                    sb.Append("<" + d.Key + ">" + d.Value + "
         ");                }            }            sb.Append("
        ");            //1.创建请求连接            var request = (HttpWebRequest)WebRequest.Create(weCharUrl);            //2.设置参数            //var postData = "thing1=hello";            //postData += "&thing2=world";            //3.将参数转换编码格式            var data = Encoding.UTF8.GetBytes(sb.ToString());            //4.设置属性            request.Method = "POST";            request.ContentType = "application/x-www-form-urlencoded";            request.ContentLength = data.Length;            //5.将转换后的参数以文件流的形式写入到请求中            using (var stream = request.GetRequestStream())            {                stream.Write(data, 0, data.Length);            }            //6.声明变量，获取响应            var response = (HttpWebResponse)request.GetResponse();            //7.以文件流的方式读取响应结果            var responseString = new StreamReader(response.GetResponseStream()).ReadToEnd();            var codeId = new XmlDocument();            codeId.LoadXml(responseString);            //8.读取xml节点的值            XmlNode xn = codeId.SelectSingleNode("xml/mweb_url");            var mweb_url = xn.InnerText;            //9.返回要跳转的url            return mweb_url;        }        #endregion    }}