.net微信服务号发送红包

本文实例为大家分享了.net微信红包发送代码，供大家参考，具体内容如下

注:需要开通微信支付的服务号!

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									//跳转微信登录页面

									public ActionResult Index()

									{

									 ViewBag.url = "https://open.weixin.qq.com/connect/oauth2/authorize?appid=" + {服务号appid} + "&redirect_uri=http%3A%2F%2F" + {微信重定向域名(填写程序域名,例如:www.xxxx.com)} + "%2F"+{程序控制器名,例如:Home}+"%2F"+{程序Action名,例如:RedirectWeChat}+"&response_type=code&scope=snsapi_userinfo&state=STATE#wechat_redirect";

									 return View();

									}

									//获取accesstoken(访问微信接口需要)

									public static string accesstoken(string WeChatWxAppId, string WeChatWxAppSecret)

									{

									 string strJson = HttpRequestUtil.RequestUrl(string.Format("https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid={0}&secret={1}", WeChatWxAppId, WeChatWxAppSecret));

									 if (strJson.IndexOf("errcode") == -1)

									 {

									  return GetJsonValue(strJson, "access_token");

									 }

									 else

									 {

									  return "";

									 }

									}

									//解析json

									public static string GetJsonValue(string jsonStr, string key)

									{

									 string result = string.Empty;

									 if (!string.IsNullOrEmpty(jsonStr))

									 {

									  key = "\"" + key.Trim('"') + "\"";

									  int index = jsonStr.IndexOf(key) + key.Length + 1;

									  if (index > key.Length + 1)

									  {

									   //先截逗号，若是最后一个，截“｝”号，取最小值

									   int end = jsonStr.IndexOf(',', index);

									   if (end == -1)

									   {

									    end = jsonStr.IndexOf('}', index);

									   }

									   result = jsonStr.Substring(index, end - index);

									   result = result.Trim(new char[] { '"', ' ', '\'' }); //过滤引号或空格

									  }

									 }

									 return result;

									}

									//请求url

									public static string RequestUrl(string url, string method="post")

									{

									 // 设置参数

									 HttpWebRequest request = WebRequest.Create(url) as HttpWebRequest;

									 CookieContainer cookieContainer = new CookieContainer();

									 request.CookieContainer = cookieContainer;

									 request.AllowAutoRedirect = true;

									 request.Method = method;

									 request.ContentType = "text/html";

									 request.Headers.Add("charset", "utf-8");

									 //发送请求并获取相应回应数据

									 HttpWebResponse response = request.GetResponse() as HttpWebResponse;

									 //直到request.GetResponse()程序才开始向目标网页发送Post请求

									 Stream responseStream = response.GetResponseStream();

									 StreamReader sr = new StreamReader(responseStream, Encoding.UTF8);

									 //返回结果网页（html）代码

									 string content = sr.ReadToEnd();

									 return content;

									}

									//接收微信返回code

									//接收微信数据获取用户信息

									public ActionResult RedirectWeChat(string code, string state)

									{

									 if (string.IsNullOrEmpty(code))

									 {

									  return Content("您拒绝了授权！");

									 }

									 string access_token = accesstoken(微信AppId, 微信AppSecret);

									 string st = "https://api.weixin.qq.com/sns/oauth2/access_token?appid=" + 微信AppId + "&secret=" + 微信AppSecret + "&code=" + code + "&grant_type=authorization_code";

									 string data = RequestUrl(st);

									//拿到用户openid

									string openid=GetJsonValue(data, "openid");

									//获取用户其他信息

									 string url = "https://api.weixin.qq.com/cgi-bin/user/info?access_token=" + access_token + "&openid=" + openid + "&lang=zh_CN";

									 data = RequestUrl(url);

									string subscribe=GetJsonValue(data, "subscribe");

									 if (subscribe == "0")

									 {

									  ///未关注

									  return RedirectToAction("");

									 }

									 return RedirectToAction("");

									}

									//发送红包Action

									public ActionResult HB()

									{

									 string openid = "";//用户openid

									 string url = "https://api.mch.weixin.qq.com/mmpaymkttransfers/sendredpack"; 

									 string orderNo = 商户号 + DateTime.Now.ToString("yyyymmdd")+"随机10位数字";//商户订单号 组成：mch_id+yyyymmdd+10位一天内不能重复的数字。 

									 string Code = ""//32为随机字符串; string key="key=" + "";//支付密钥(在商户平台设置32为字符串) 

									 Dictionary<string, string> data = new Dictionary<string, string>(); data.Add("act_name", "");//活动名称 

									 data.Add("client_ip", "192.168.1.1");//Ip地址 

									 data.Add("mch_billno", orderNo);//商户订单号 组成：mch_id+yyyymmdd+10位一天内不能重复的数字。 

									 data.Add("mch_id", "");//商户号 

									 data.Add("nonce_str", Code);//随机字符串 

									 data.Add("re_openid", openid);//用户openid 

									 data.Add("remark", "");//备注 

									 data.Add("send_name","");//商户名称 

									 data.Add("total_amount", "100");//付款金额 单位分 

									 data.Add("total_num", "1");//红包发放总人数 

									 data.Add("wishing", "恭喜发财");//红包祝福语 

									 data.Add("wxappid", );//公众账号appid 

									 string xml = GetXML(data, key);//签名+拼接xml 

									 string str=PostWebRequests(url, xml);//微信返回xml err_code=SUCCESS 就是成功

									 return View(""); 

									}

									//发送红包(MD5签名+拼接XML)

									public static string GetXML(Dictionary<string, string> data,string paykey)

									{

									 string retStr;

									 MD5CryptoServiceProvider m5 = new MD5CryptoServiceProvider();

									 var data1=from d in data orderby d.Key select d;

									 string data2 = "";

									 string XML = "<xml>";

									 foreach (var item in data1)

									 {

									  //空值不参与签名

									  if (item.Value + "" != "")

									  {

									   data2 += item.Key +"="+ item.Value + "&";

									  }

									  XML += "<" + item.Key + ">" + item.Value+""+ "</" + item.Key + ">";

									 }

									 data2 += paykey;

									 //创建md5对象

									 byte[] inputBye;

									 byte[] outputBye;

									 //使用GB2312编码方式把字符串转化为字节数组．

									 try

									 {

									  inputBye = Encoding.UTF8.GetBytes(data2);

									 }

									 catch

									 {

									  inputBye = Encoding.GetEncoding("GB2312").GetBytes(data2);

									 }

									 outputBye = m5.ComputeHash(inputBye);

									 retStr = System.BitConverter.ToString(outputBye);

									 retStr = retStr.Replace("-", "").ToUpper();

									 XML += "<sign>" + retStr + "</sign>";//签名

									 XML += "</xml>";

									 return XML;

									}

									//发送红包请求Post方法

									public static string PostWebRequests(string postUrl, string menuInfo)

									{

									 string returnValue = string.Empty;

									 try

									 {

									  Encoding encoding = Encoding.UTF8;

									  byte[] bytes = encoding.GetBytes(menuInfo);

									  string cert = @"E:\cdcert\apiclient_cert.p12";//支付证书路径

									  string password = "1212121";//支付证书密码

									  ServicePointManager.ServerCertificateValidationCallback = new RemoteCertificateValidationCallback(CheckValidationResult);

									  X509Certificate cer = new X509Certificate(cert, password, X509KeyStorageFlags.MachineKeySet);

									  HttpWebRequest webrequest = (HttpWebRequest)HttpWebRequest.Create(postUrl);

									  webrequest.ClientCertificates.Add(cer);

									  webrequest.Method = "post";

									  webrequest.ContentLength = bytes.Length;

									  webrequest.GetRequestStream().Write(bytes, 0, bytes.Length);

									  HttpWebResponse webreponse = (HttpWebResponse)webrequest.GetResponse();

									  Stream stream = webreponse.GetResponseStream();

									  string resp = string.Empty;

									  using (StreamReader reader = new StreamReader(stream))

									  {

									    return reader.ReadToEnd();

									  }

									 }

									 catch (Exception ex)

									 {

									  return "";

									 }

									}