一、第一步：需要准备的东东
(图一)，登录地址：https://mp.weixin.qq.com/
（图二，你自己设置的32位秘钥），登录地址：https://pay.weixin.qq.com/index.php/home/login?return_url=%2F
二、第二步：安装证书，windows下面选择.p12格式的证书；取证书时一定得用 绝对路径（如：D:\wwwroot\BusinessCard\weixin\businesscard\cert\apiclient_cert.p12）
证书pkcs12格式 (apiclient_cert.p12)
三、第三步：帐户里面必须有钱，如下图
四、第四步：源码如下：
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Net;
using System.Net.Security; using System.Security.Cryptography; using System.Security.Cryptography.X509Certificates; using System.Text; using System.Web; namespace BusinessCard.Web.Code { public class Class1 { /// /// 企业付款给个人，直接入帐到微信钱包中 /// public static string TENPAY = "1"; public static string APPID = Vincent._WebConfig.GetAppSettingsString("sAppID"); //开发者应用ID public static string PARTNER = Vincent._WebConfig.GetAppSettingsString("sPartner"); //商户号 public static string APPSECRET = Vincent._WebConfig.GetAppSettingsString("sAppSecret"); //开发者应用密钥 public static string PARTNER_KEY = Vincent._WebConfig.GetAppSettingsString("sPartnerKey"); //商户秘钥 public const string URL = "https://api.mch.weixin.qq.com/mmpaymkttransfers/promotion/transfers"; //服务器异步通知页面路径(流量卡) public static string WebUrl = Vincent._WebConfig.GetAppSettingsString("WebUrl"); public static readonly string NOTIFY_URL_Card_Store = "http://" + WebUrl + "/weixinpay/WXPayNotify_URL.aspx";// ConfigurationManager.AppSettings["WXPayNotify_URL_CardStore"].ToString(); public static readonly string NOTIFY_URL_Card_User = "http://" + WebUrl + "/weixinpay/WXPayNotify_URL.aspx"; //ConfigurationManager.AppSettings["WXPayNotify_URL_CardUser"].ToString(); public static readonly string NOTIFY_URL_HB_Store = "http://" + WebUrl + "/weixinpay/WXPayNotify_URL.aspx";// ConfigurationManager.AppSettings["WXPayNotify_URL_CardStore"].ToString(); //=======【代理服务器设置】=================================== /* 默认IP和端口号分别为0.0.0.0和0，此时不开启代理（如有需要才设置） */ public const string PROXY_URL = "http://10.152.18.220:8080"; //=======【证书路径设置】===================================== /* 证书路径,注意应该填写绝对路径（仅退款、撤销订单时需要） */ public const string SSLCERT_PATH = "weixin\\businesscard\\cert\\apiclient_cert.p12"; public static string SSLCERT_PASSWORD = PARTNER; /// /// 企业付款给个人 /// /// dic = new SortedDictionary(); string total_fee = (Charge_Amt * 100).ToString("f0"); string wx_nonceStr = Guid.NewGuid().ToString().Replace("-", ""); //Interface_WxPay.getNoncestr(); dic.Add("mch_appid", APPID); dic.Add("mchid", PARTNER);//财付通帐号商家 //dic.Add("device_info", "013467007045711");//可为空 dic.Add("nonce_str", wx_nonceStr); dic.Add("partner_trade_no", Bill_No); dic.Add("openid", toOpenid); dic.Add("check_name", "NO_CHECK"); dic.Add("amount", total_fee); dic.Add("desc", title);//商品描述 dic.Add("spbill_create_ip", "211.149.234.224"); //用户的公网ip，不是商户服务器IP //生成签名 string get_sign = BuildRequest(dic, PARTNER_KEY); Vincent._Log.SaveMessage("第一步 get_sign：" + get_sign); string _req_data = ""; _req_data += "" + APPID + " "; _req_data += "" + PARTNER + " "; _req_data += "" + wx_nonceStr + " "; _req_data += "" + Bill_No + " "; _req_data += "" + toOpenid + " "; _req_data += "NO_CHECK "; _req_data += "" + total_fee + " "; _req_data += "" + title + " "; _req_data += "211.149.234.224 "; _req_data += "" + get_sign + " "; _req_data += " "; Vincent._Log.SaveMessage("企业付款生成的xml：" + _req_data.Trim()); var result = HttpPost(URL, _req_data.Trim(), true, 300); //var result = HttpPost(URL, _req_data, Encoding.UTF8); Vincent._Log.SaveMessage("返回结果：" + result); return result; //ReturnValue retValue = StreamReaderUtils.StreamReader(URL, Encoding.UTF8.GetBytes(_req_data), System.Text.Encoding.UTF8, true); //Vincent._Log.SaveMessage("返回结果：" + retValue.ErrorCode); //return retValue.ErrorCode; } public static string getTimestamp() { TimeSpan ts = DateTime.UtcNow - new DateTime(1970, 1, 1, 0, 0, 0, 0); return Convert.ToInt64(ts.TotalSeconds).ToString(); } public static string BuildRequest(SortedDictionary sParaTemp, string key) { //获取过滤后的数组 Dictionary dicPara = new Dictionary(); dicPara = FilterPara(sParaTemp); //组合参数数组 string prestr = CreateLinkString(dicPara); //拼接支付密钥 string stringSignTemp = prestr + "&key=" + key; Vincent._Log.SaveMessage("生成签名的参数：" + stringSignTemp); //获得加密结果 string myMd5Str = GetMD5(stringSignTemp.Trim()); //返回转换为大写的加密串 return myMd5Str.ToUpper(); } /// /// 除去数组中的空值和签名参数并以字母a到z的顺序排序 /// /// 过滤前的参数组 /// 过滤后的参数组 public static Dictionary FilterPara(SortedDictionary dicArrayPre) { Dictionary dicArray = new Dictionary(); foreach (KeyValuePair temp in dicArrayPre) { if (temp.Key != "sign" && !string.IsNullOrEmpty(temp.Value)) { dicArray.Add(temp.Key, temp.Value); } } return dicArray; } //组合参数数组 public static string CreateLinkString(Dictionary dicArray) { StringBuilder prestr = new StringBuilder(); foreach (KeyValuePair temp in dicArray) { prestr.Append(temp.Key + "=" + temp.Value + "&"); } int nLen = prestr.Length; prestr.Remove(nLen - 1, 1); return prestr.ToString(); } //加密 public static string GetMD5(string pwd) { MD5 md5Hasher = MD5.Create(); byte[] data = md5Hasher.ComputeHash(Encoding.UTF8.GetBytes(pwd)); StringBuilder sBuilder = new StringBuilder(); for (int i = 0; i < data.Length; i++) { sBuilder.Append(data[i].ToString("x2")); } return sBuilder.ToString(); } public static string HttpPost(string postUrl, string paramData, Encoding dataEncode) { string ret = string.Empty; try { byte[] byteArray = dataEncode.GetBytes(paramData); //转化 HttpWebRequest webReq = (HttpWebRequest)WebRequest.Create(new Uri(postUrl)); webReq.Method = "POST"; webReq.ContentType = "application/x-www-form-urlencoded"; webReq.ContentLength = byteArray.Length; Stream newStream = webReq.GetRequestStream(); newStream.Write(byteArray, 0, byteArray.Length);//写入参数 newStream.Close(); HttpWebResponse response = (HttpWebResponse)webReq.GetResponse(); StreamReader sr = new StreamReader(response.GetResponseStream(), Encoding.Default); ret = sr.ReadToEnd(); sr.Close(); response.Close(); newStream.Close(); } catch (Exception ex) { Vincent._Log.SaveMessage("Post提交异常：" + ex.Message); } return ret; } public static bool CheckValidationResult(object sender, X509Certificate certificate, X509Chain chain, SslPolicyErrors errors) { //直接确认，否则打不开 return true; } /// /// post提交支付 /// /// /// /// 是否使用证书 /// /// /// 处理http GET请求，返回数据 /// /// 请求的url地址 /// http GET成功后返回的数据，失败抛WebException异常 public static string Get(string url) { System.GC.Collect(); string result = ""; HttpWebRequest request = null; HttpWebResponse response = null; //请求url以获取数据 try { //设置最大连接数 ServicePointManager.DefaultConnectionLimit = 200; //设置https验证方式 if (url.StartsWith("https", StringComparison.OrdinalIgnoreCase)) { ServicePointManager.ServerCertificateValidationCallback = new RemoteCertificateValidationCallback(CheckValidationResult); } /*************************************************************** * 下面设置HttpWebRequest的相关属性 * ************************************************************/ request = (HttpWebRequest)WebRequest.Create(url); request.Method = "GET"; //设置代理 WebProxy proxy = new WebProxy(); proxy.Address = new Uri(PROXY_URL); request.Proxy = proxy; //获取服务器返回 response = (HttpWebResponse)request.GetResponse(); //获取HTTP返回数据 StreamReader sr = new StreamReader(response.GetResponseStream(), Encoding.UTF8); result = sr.ReadToEnd().Trim(); sr.Close(); } catch (System.Threading.ThreadAbortException e) { Vincent._Log.SaveMessage("HttpService:Thread - caught ThreadAbortException - resetting."); Vincent._Log.SaveMessage("Exception message: " + e.Message); System.Threading.Thread.ResetAbort(); } catch (WebException e) { Vincent._Log.SaveMessage("HttpService" + e.ToString()); if (e.Status == WebExceptionStatus.ProtocolError) { Vincent._Log.SaveMessage("HttpService:StatusCode : " + ((HttpWebResponse)e.Response).StatusCode); Vincent._Log.SaveMessage("HttpService:StatusDescription : " + ((HttpWebResponse)e.Response).StatusDescription); } throw new Exception(e.ToString()); } catch (Exception e) { Vincent._Log.SaveMessage("HttpService" + e.ToString()); throw new Exception(e.ToString()); } finally { //关闭连接和流 if (response != null) { response.Close(); } if (request != null) { request.Abort(); } } return result; } } }