.Net HttpClient 模拟登录微信公众平台发送消息

1.模拟登录

 public WeiXinRetInfo ExecLogin(string name, string pass)
         {
             CookieContainer cc = new CookieContainer();//接收缓存
             WeiXinRetInfo retinfo = null;

             try
             {
                 string password = Common.GetMd5Str32(pass).ToUpper();

                 HttpClientHandler hchandler = new HttpClientHandler()
                 {
                     CookieContainer = cc
                 };

                 HttpClient hclient = new HttpClient(hchandler);
                 hclient.DefaultRequestHeaders.Add("User-Agent", "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/41.0.2272.89 Safari/537.36");
                 hclient.DefaultRequestHeaders.Add("Referer", "https://mp.weixin.qq.com");
                 //hclient.DefaultRequestHeaders.Add("Host", "mp.weixin.qq.com");
                 //hclient.DefaultRequestHeaders.Add("ContentType", "application/x-www-form-urlencoded");
                 //hclient.DefaultRequestHeaders.ExpectContinue = false;

                 HttpContent hcontent = new FormUrlEncodedContent(new Dictionary<string, string>()
                 {
                     {"username",name},
                     {"pwd",password},
                     {"imgcode",""},
                     {"f","json"}
                 });

                 //https://mp.weixin.qq.com/cgi-bin/login?lang=zh_CN
                 HttpResponseMessage hresponse = hclient.PostAsync(Wx_Const.LOGIN_URL, hcontent).Result;

                 hresponse.EnsureSuccessStatusCode();

                 string str_response = hresponse.Content.ReadAsStringAsync().Result;

                 retinfo = Newtonsoft.Json.JsonConvert.DeserializeObject<WeiXinRetInfo>(str_response);

                 if (retinfo.base_resp.err_msg.Equals("ok"))
                 {
                     string token = retinfo.redirect_url.Split(new char[] { '&' })[].Split(new char[] { '=' })[].ToString();//取得令牌
                     lgin.CreateDate = DateTime.Now;
                     lgin.Token = token;                    

                     string[] strCookies = (string[])hresponse.Headers.GetValues("Set-Cookie");
                     HttpClientCookies hcckis = new HttpClientCookies();
                     hcckis.AddCookie(strCookies);
                     lgin.hcckis = hcckis;

                     lgin.LoginCookie = cc;
                 }
             }
             catch (Exception ex)
             {
                 Console.WriteLine(string.Format("ExecLogin Exception[{0}]", ex.Message));
                 //throw;
             }

             return retinfo;
         }

2.新增图文消息（返回msgid）,后续发送图文消息是用到

 /// <summary>
         /// 新增图文消息
         /// </summary>
         /// <returns></returns>
         public CreateMsgRs AddWeixinImgTextMsg()
         {
             string str_url_add_appmsg = string.Format("https://mp.weixin.qq.com/cgi-bin/operate_appmsg?t=ajax-response&sub=create&type=10&token={0}&lang=zh_CN", this.lgif.Token);

             //https://mp.weixin.qq.com/cgi-bin/operate_appmsg?t=ajax-response&sub=create&type=10&token={0}&lang=zh_CN

             HttpClientHandler httpClientHandler = new HttpClientHandler()
             {
                 CookieContainer = this.lgif.LoginCookie,
             };

             HttpClient client = new HttpClient(httpClientHandler);

             client.DefaultRequestHeaders.Add("User-Agent", "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/41.0.2272.89 Safari/537.36");

             client.DefaultRequestHeaders.Add("Origin", "https://mp.weixin.qq.com");

             client.DefaultRequestHeaders.Add("Referer", string.Format("https://mp.weixin.qq.com/cgi-bin/appmsg?t=media/appmsg_edit&action=edit&type=10&lang=zh_CN&token={0}", this.lgif.Token));
             //
             //client.DefaultRequestHeaders.Add("Content-Type", "application/x-www-form-urlencoded; charset=UTF-8");

             //client.DefaultRequestHeaders.Accept.Add(new System.Net.Http.Headers.MediaTypeWithQualityHeaderValue("application/x-www-form-urlencoded"));

             //client.DefaultRequestHeaders.ty

             string fileid0 = "";

             UploadImgRs uploadImgRs = AddImg();

             if (uploadImgRs.base_resp.ErrMsg.Equals("ok"))
             {
                 fileid0 = uploadImgRs.content;
             }

             HttpContent content = new FormUrlEncodedContent(new Dictionary<string, string>()
             {
                 {"token",this.lgif.Token},
                 {"lang","zh_CN"},
                 {"f","json"},
                 {"ajax",""},
                 {"random","0.9338385944720358"},
                 {"AppMsgId",""},
                 {"count",""},
                 {"title0","张静初出演电影版《三体》 获小说作者肯定"},
                 {"content0","2015年，被媒体称为中国“科幻元年”，多部科幻片启动了拍摄计划，《三体》当然是最受瞩目的，宣布的开机消息如是说“影片由小说原作者刘慈欣出任监制、游族影业CEO孔二狗担任总制片人、新锐导演张番番历经三年苦心筹备出任影片导演，台前众多国内实力派艺人担纲出演，幕后则由国际团队承担起拍摄、特效等重任，力求将本片打造成一部制作精良、高度还原的史诗级国产科幻片开山之作。”看着这依然模棱两可的说辞，网友们忧心忡忡，去年一片“求不渣”的请求声再起"},
                 {"digest0","2015年，被媒体称为中国“科幻元年”，多部科幻片启动了拍摄计划，《三体》当然是最受瞩目的"},
                 {"author0","李晓婕 仲敏"},
                 {"fileid0",fileid0},//图片文件ID
                 {"show_cover_pic0",""},
                 {"shortvideofileid0",""},
                 {"copyright_type0",""},
                 {"can_reward0",""},
                 {"reward_wording0",""},
                 {"sourceurl0",""},
                 {"vid",""},
                 //{"preusername",""}
             });
             HttpResponseMessage response = client.PostAsync(str_url_add_appmsg, content).Result;
             //{"base_resp":{"ret":0,"err_msg":"ok"},"ret":"0","msg":"","appMsgId":204514536}
             string s = response.Content.ReadAsStringAsync().Result;

             CreateMsgRs cmrs = Newtonsoft.Json.JsonConvert.DeserializeObject<CreateMsgRs>(s);

             return cmrs;
         }

3.获取图文列表

 /// <summary>
         /// 获取图文消息列表
         /// </summary>
         /// <returns></returns>
         public WeixinImgTextMsg GetImgTextList()
         {
             WeixinImgTextMsg wxImgText = null;

             string str_url_get_list = string.Format("https://mp.weixin.qq.com/cgi-bin/appmsg?type=10&action=list&begin=0&count=10&f=json&token={0}&lang=zh_CN&token={0}&lang=zh_CN&f=json&ajax=1&random={1}", this.lgif.Token, "0.18148761289194222");

             HttpClientHandler httpClientHandler = new HttpClientHandler()
             {
                 CookieContainer = this.lgif.LoginCookie,
             };

             HttpClient client = new HttpClient(httpClientHandler);

             client.DefaultRequestHeaders.Add("User-Agent", "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/41.0.2272.89 Safari/537.36");

             HttpResponseMessage response = client.GetAsync(str_url_get_list).Result;

             string s = response.Content.ReadAsStringAsync().Result;

             wxImgText = Newtonsoft.Json.JsonConvert.DeserializeObject<WeixinImgTextMsg>(s);

             return wxImgText;

         }

4.获取订阅用户

 /// <summary>
         /// 获取fakeid
         /// </summary>
         /// <returns></returns>
         public ArrayList SubscribeMP()
         {
             string token = this.loginInfo.Token;

             string str_url_sendmsg = string.Format("https://mp.weixin.qq.com/cgi-bin/contactmanage?t=user/index&pagesize=10&pageidx=0&type=0&groupid=0&token={0}&lang=zh_CN", token);

             try
             {
                 HttpClientHandler hchandler = new HttpClientHandler()
                 {
                     CookieContainer = this.loginInfo.LoginCookie
                 };

                 HttpClient hclient = new HttpClient(hchandler);

                 hclient.DefaultRequestHeaders.Add("User-Agent", "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/41.0.2272.89 Safari/537.36");

                 HttpResponseMessage response = hclient.GetAsync(str_url_sendmsg).Result;

                 response.EnsureSuccessStatusCode();

                 string str_response_html = response.Content.ReadAsStringAsync().Result;

                 MatchCollection mc;

                 //由于此方法获取过来的信息是一个【html网页】所以此处使用了正则表达式，注意：（此正则表达式只是获取了fakeid的信息如果想获得一些其他的信息修改此处的正则表达式就可以了。）
                 Regex r = new Regex("\"id\"\\:\\d+,\"nick_name\""); //定义一个Regex对象实例
                 mc = r.Matches(str_response_html);
                 Int32 friendSum = mc.Count;          //好友总数

                 string fackID = "";

                 ArrayList fackID1 = new ArrayList();

                 for (int i = ; i < friendSum; i++)
                 {
                     //"id":208989515,"nick_name"
                     fackID = mc[i].Value.Replace(",\"nick_name\"", "").Split(new char[] { ':' })[];
                     fackID = fackID.Replace("\"", "").Trim();
                     fackID1.Add(fackID);
                 }

                 return fackID1;
             }
             catch (Exception ex)
             {
                 throw new Exception(ex.StackTrace);
             }
         }

5.发送消息

 /// <summary>
         /// 发送消息
         /// </summary>
         /// <param name="Message"></param>
         /// <param name="fakeid"></param>
         public SendMsgRs SendWxMessage(Wx_MsgType WxMsgType, string Message, string fakeid, string msgIdOrFileId)
         {
             SendMsgRs sendMsgRs = new SendMsgRs();

             string token = this.loginInfo.Token;

             string str_url_sendmsg = string.Format("https://mp.weixin.qq.com/cgi-bin/singlesend?t=ajax-response&f=json&token={0}&lang=zh_CN", token);

             try
             {
                 HttpClientHandler hchandler = new HttpClientHandler()
                 {
                     CookieContainer = this.loginInfo.LoginCookie
                 };

                 //HttpContent hcontent = new FormUrlEncodedContent(new Dictionary<string, string>()
                 //{
                 //    {"type","1"},
                 //    {"content",Message},
                 //    {"error","false"},
                 //    {"tofakeid",fakeid},
                 //    {"token",token},
                 //    {"ajax","1"},
                 //});

                 HttpContent hcontent = new FormUrlEncodedContent(this.GetMsgContentByMsgType(WxMsgType, msgIdOrFileId, Message, fakeid));

                 HttpClient hclient = new HttpClient(hchandler);

                 hclient.DefaultRequestHeaders.Add("User-Agent", "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/41.0.2272.89 Safari/537.36");
                 hclient.DefaultRequestHeaders.Add("Referer", string.Format("https://mp.weixin.qq.com/cgi-bin/singlemsgpage?token={0}&fromfakeid={1}&msgid=&source=&count=20&t=wxm-singlechat&lang=zh_CN", token, fakeid));

                 HttpResponseMessage response = hclient.PostAsync(str_url_sendmsg, hcontent).Result;

                 response.EnsureSuccessStatusCode();

                 string s = response.Content.ReadAsStringAsync().Result;

                 sendMsgRs = Newtonsoft.Json.JsonConvert.DeserializeObject<SendMsgRs>(s);
             }
             catch (Exception ex)
             {
                 throw;
             }
             return sendMsgRs;
         }

6.新增图文消息是，需要上传一张封面图片，返回fileid

 /// <summary>
         ///
         /// </summary>
         public UploadImgRs AddImg()
         {
             UploadImgRs uUploadImgRs = new UploadImgRs();

             string str_rs = string.Empty;

             //ticket_id,ticket可从一下地址解析获取
             //https://mp.weixin.qq.com/cgi-bin/settingpage?t=setting/index&action=index&token=1985674500&lang=zh_CN
             //https://mp.weixin.qq.com/cgi-bin/home?t=home/index&lang=zh_CN&token=1437387422
             //string ticket_id = "gh_982977c20410";
             //string ticket = "62b2f4612b5b2f30583b517a21a1b76ffb8a7711";

             string ticket_id = this.lgif.user_name;
             string ticket = this.lgif.CurTicket;

             string str_url_uploadimg = string.Format("https://mp.weixin.qq.com/cgi-bin/filetransfer?action=upload_material&f=json&writetype=doublewrite&groupid=1&ticket_id={0}&ticket={1}&token={2}&lang=zh_CN", ticket_id, ticket, this.lgif.Token);

             HttpClientHandler httpClientHandler = new HttpClientHandler()
             {
                 CookieContainer = this.lgif.LoginCookie,
             };

             using (HttpClient client = new HttpClient(httpClientHandler))
             {
                 client.DefaultRequestHeaders.Add("Connection", "keep-alive");
                 client.DefaultRequestHeaders.Add("Origin", "https://mp.weixin.qq.com");
                 client.DefaultRequestHeaders.Add("Referer", "https://mp.weixin.qq.com/cgi-bin/filepage?type=2&begin=0&count=12&t=media/img_list&token=" + this.lgif.Token + "&lang=zh_CN");
                 //client.DefaultRequestHeaders.Add("", "");
                 //client.DefaultRequestHeaders.Add("", "");
                 //client.DefaultRequestHeaders.Add("", "");
                 //client.DefaultRequestHeaders.Add("", "");
                 client.DefaultRequestHeaders.ExpectContinue = false;

                 client.DefaultRequestHeaders.Add("User-Agent", "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/41.0.2272.89 Safari/537.36");

                 using (MultipartFormDataContent content = new MultipartFormDataContent())
                 {
                     //*******************************************
                     //*******************************************
                     //!!!!!!!!!非常重要的地方，致命重要的设置!!!!!!!!!!
                     //*******************************************
                     //*******************************************
                     var boundaryValue = content.Headers.ContentType.Parameters.FirstOrDefault(p => p.Name == "boundary");
                     boundaryValue.Value = boundaryValue.Value.Replace("\"", String.Empty);
                     //*******************************************
                     //*******************************************
                     //!!!!!!!!!非常重要的地方，致命重要的设置!!!!!!!!!!
                     //*******************************************
                     //*******************************************

                     string str_file_path = Environment.CurrentDirectory + @"\ac345982b2b7d0a2f9d24887c9ef76094b369a95.jpg";
                     FileStream fileStream = File.OpenRead(str_file_path);

                     StringContent sc_id = new StringContent("WU_FILE_0");
                     sc_id.Headers.Remove("Content-Type");
                     content.Add(sc_id, "\"id\"");
                     //content.Add(new StringContent("WU_FILE_0"), "\"id\"");

                     StringContent sc_name = new StringContent("2b5906a9da28784e4a36d6db.jpg");
                     sc_name.Headers.Remove("Content-Type");
                     content.Add(sc_name, "\"name\"");
                     //content.Add(new StringContent("2b5906a9da28784e4a36d6db.jpg"), "\"name\"");

                     StringContent sc_type = new StringContent("image/jpeg");
                     sc_type.Headers.Remove("Content-Type");
                     content.Add(sc_type, "\"type\"");
                     //content.Add(new StringContent("image/jpeg"), "\"type\"");

                     StringContent sc_lastModifiedDate = new StringContent("Thu Mar 19 2015 17:11:58 GMT+0800 (中国标准时间)");
                     sc_lastModifiedDate.Headers.Remove("Content-Type");
                     content.Add(sc_lastModifiedDate, "\"lastModifiedDate\"");
                     //content.Add(new StringContent("Thu Mar 19 2015 17:11:58 GMT+0800 (中国标准时间)"), "\"lastModifiedDate\"");

                     StringContent sc_size = new StringContent(Convert.ToInt32(fileStream.Length).ToString());
                     sc_size.Headers.Remove("Content-Type");
                     content.Add(sc_size, "\"size\"");
                     //content.Add(new StringContent(Convert.ToInt32(fileStream.Length).ToString()), "\"size\"");

                     //***************************
                     var streamContent = new StreamContent(fileStream);

                     //Content-Disposition: form-data; name="file"; filename="2b5906a9da28784e4a36d6db.jpg"
                     //Content-Type: image/jpeg
                     //Content-Disposition: form-data; name="file"; filename="2b5906a9da28784e4a36d6db.jpg"
                     //Content-Type: image/jpeg
                     streamContent.Headers.Add("Content-Disposition", "form-data; name=\"file\"; filename=\"" + Path.GetFileName(str_file_path) + "\"");
                     streamContent.Headers.Add("Content-Type", "image/jpeg");

                     content.Add(streamContent, "file", Path.GetFileName(str_file_path));

                     HttpResponseMessage response = client.PostAsync(str_url_uploadimg, content).Result;

                     response.EnsureSuccessStatusCode();

                     string s = str_rs = response.Content.ReadAsStringAsync().Result;

                     uUploadImgRs = Newtonsoft.Json.JsonConvert.DeserializeObject<UploadImgRs>(s);
                 }

                 //返回结果
                 //{"base_resp":{"ret":0,"err_msg":"ok"},"location":"bizfile","type":"image","content":"204535433"}
             }

             return uUploadImgRs;
         }

以上代码仅是大概流程，又问提的可以留言我.