C#实现微信公众号群发消息(解决一天只能发一次的限制)实例分享
总体思路：
1.首先必须要在微信公众平台上申请一个公众号。
2.然后进行模拟登陆。（由于我对http传输原理和编程不是特别懂，在模拟登陆的地方，不是特别清楚，希望有大神指教）
3.模拟登陆后会获得一个token（令牌）和cookie。
4.因为模拟登陆后相当于就进入了微信公众平台，在这个里面就可以抓取到需要的数据，如公众好友的昵称，fakeId。其中的fakeid非常重要，因为传输数据必须要知道对方的fakeid。
5.知道对方的fakeid就可以进行数据的发送了。
不过里面还有一些小问题，希望有人继续修改和讨论！也有人说这样会被封号，所以请谨慎操作讲一下我项目里面的主要内容1.WeiXinLogin.cs类是用来执行登陆功能的//对密码进行MD5加密 static string GetMd5Str32(string str){MD5CryptoServiceProvider md5Hasher = new MD5CryptoServiceProvider();// Convert the input string to a byte array and compute the hash.char[] temp = str.ToCharArray();byte[] buf = new byte[temp.Length];for (int i = 0; i < temp.Length; i++){buf[i] = (byte)temp[i];}byte[] data = md5Hasher.ComputeHash(buf);// Create a new Stringbuilder to collect the bytes// and create a string.StringBuilder sBuilder = new StringBuilder();// Loop through each byte of the hashed data// and format each one as a hexadecimal string.for (int i = 0; i < data.Length; i++){sBuilder.Append(data[i].ToString("x2"));}// Return the hexadecimal string.return sBuilder.ToString();}//执行登陆操作public static bool ExecLogin(string name,string pass){bool result = false;string password = GetMd5Str32(pass).ToUpper();string padata = "username=" + name + "&pwd=" + password + "&imgcode=&f=json";string url = "http://mp.weixin.qq.com/cgi-bin/login?lang=zh_CN ";//请求登录的URLtry{CookieContainer cc = new CookieContainer();//接收缓存byte[] byteArray = Encoding.UTF8.GetBytes(padata); // 转化HttpWebRequest webRequest2 = (HttpWebRequest)WebRequest.Create(url);//新建一个WebRequest对象用来请求或者响应urlwebRequest2.CookieContainer = cc;//保存cookiewebRequest2.Method = "POST";//请求方式是POSTwebRequest2.ContentType = "application/x-www-form-urlencoded";//请求的内容格式为application/x-www-form-urlencodedwebRequest2.ContentLength = byteArray.Length;Stream newStream = webRequest2.GetRequestStream();//返回用于将数据写入 Internet 资源的 Stream。// Send the data.newStream.Write(byteArray, 0, byteArray.Length);//写入参数newStream.Close();HttpWebResponse response2 = (HttpWebResponse)webRequest2.GetResponse();StreamReader sr2 = new StreamReader(response2.GetResponseStream(), Encoding.Default);string text2 = sr2.ReadToEnd();//此处用到了newtonsoft来序列化WeiXinRetInfo retinfo = Newtonsoft.Json.JsonConvert.DeserializeObject<WeiXinRetInfo>(text2);string token = string.Empty;if (retinfo.ErrMsg.Length > 0){token = retinfo.ErrMsg.Split(new char[] { '&' })[2].Split(new char[] { '=' })[1].ToString();//取得令牌LoginInfo.LoginCookie = cc;LoginInfo.CreateDate = DateTime.Now;LoginInfo.Token = token;result = true;}}catch (Exception ex){throw new Exception(ex.StackTrace);}return result;}public static class LoginInfo{/// <summary>/// 登录后得到的令牌/// </summary>public static string Token { get; set; }/// <summary>/// 登录后得到的cookie/// </summary>public static CookieContainer LoginCookie { get; set; }/// <summary>/// 创建时间/// </summary>public static DateTime CreateDate { get; set; }}2.在WeiXin.cs类中实现发送数据public static bool SendMessage(string Message, string fakeid){bool result = false;CookieContainer cookie = null;string token = null;cookie = WeiXinLogin.LoginInfo.LoginCookie;//取得cookietoken =WeiXinLogin.LoginInfo.Token;//取得tokenstring strMsg = System.Web.HttpUtility.UrlEncode(Message);//对传递过来的信息进行url编码string padate = "type=1&content=" + strMsg + "&error=false&tofakeid=" + fakeid + "&token=" + token + "&ajax=1";string url = "https://mp.weixin.qq.com/cgi-bin/singlesend?t=ajax-response&lang=zh_CN";byte[] byteArray = Encoding.UTF8.GetBytes(padate); // 转化HttpWebRequest webRequest2 = (HttpWebRequest)WebRequest.Create(url);webRequest2.CookieContainer = cookie; //登录时得到的缓存webRequest2.Referer = "https://mp.weixin.qq.com/cgi-bin/singlemsgpage?token=" + token + "&fromfakeid=" + fakeid + "&msgid=&source=&count=20&t=wxm-singlechat&lang=zh_CN";webRequest2.Method = "POST";webRequest2.UserAgent = "Mozilla/5.0 (Windows NT 5.1; rv:2.0.1) Gecko/20100101 Firefox/4.0.1";webRequest2.ContentType = "application/x-www-form-urlencoded";webRequest2.ContentLength = byteArray.Length;Stream newStream = webRequest2.GetRequestStream();// Send the data.newStream.Write(byteArray, 0, byteArray.Length);//写入参数newStream.Close();HttpWebResponse response2 = (HttpWebResponse)webRequest2.GetResponse();StreamReader sr2 = new StreamReader(response2.GetResponseStream(), Encoding.Default);string text2 = sr2.ReadToEnd();if (text2.Contains("ok")){result = true;}return result;}3.SendMessage.aspx.cs中主要实现获取fakeidpublic static ArrayList SubscribeMP(){try{CookieContainer cookie = null;string token = null;cookie = WeiXinLogin.LoginInfo.LoginCookie;//取得cookietoken = WeiXinLogin.LoginInfo.Token;//取得token/*获取用户信息的url，这里有几个参数给大家讲一下，1.token此参数为上面的token 2.pagesize此参数为每一页显示的记录条数3.pageid为当前的页数，4.groupid为微信公众平台的用户分组的组id，当然这也是我的猜想不一定正确*/string Url = "https://mp.weixin.qq.com/cgi-bin/contactmanagepage?t=wxm-friend&token=" + token + "&lang=zh_CN&pagesize=10&pageidx=0&type=0&groupid=0";HttpWebRequest webRequest2 = (HttpWebRequest)WebRequest.Create(Url);webRequest2.CookieContainer = cookie;webRequest2.ContentType = "text/html; charset=UTF-8";webRequest2.Method = "GET";webRequest2.UserAgent = "Mozilla/5.0 (Windows NT 5.1; rv:2.0.1) Gecko/20100101 Firefox/4.0.1";webRequest2.ContentType = "application/x-www-form-urlencoded";HttpWebResponse response2 = (HttpWebResponse)webRequest2.GetResponse();StreamReader sr2 = new StreamReader(response2.GetResponseStream(), Encoding.Default);string text2 = sr2.ReadToEnd();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(""fakeId"\s\:\s"\d+""); //定义一个Regex对象实例mc = r.Matches(text2);Int32 friendSum = mc.Count;//好友总数string fackID ="";ArrayList fackID1 = new ArrayList();for (int i = 0; i < friendSum; i++){fackID = mc[i].Value.Split(new char[] { ':' })[1];fackID = fackID.Replace(""", "").Trim();fackID1.Add(fackID);}return fackID1;}catch (Exception ex){throw new Exception(ex.StackTrace);}}更多C#实现微信公众号群发消息(解决一天只能发一次的限制)实例分享相关文章请关注PHP中文网！
