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

刺骨的言语ヽ痛彻心扉 2022-06-15 11:44 89阅读 0赞

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。

这里是整个项目的源码下载：[http://http://xiazai.jb51.net/201309/yuanma/webchat.rar][http_http_xiazai.jb51.net_201309_yuanma_webchat.rar]

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**

复制代码 代码如下:

//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URL  
        try  
        \{  
            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url  
            webRequest2.CookieContainer = cc;                                      //保存cookie   
            webRequest2.Method = "POST";                                          //请求方式是POST  
            webRequest2.ContentType = "application/x-www-form-urlencoded";       //请求的内容格式为application/x-www-form-urlencoded  
            webRequest2.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**

复制代码 代码如下:

public static bool SendMessage(string Message, string fakeid)  
    \{  
        bool result = false;  
        CookieContainer cookie = null;  
        string token = null;  
        cookie = WeiXinLogin.LoginInfo.LoginCookie;//取得cookie  
        token =  WeiXinLogin.LoginInfo.Token;//取得token  
        string 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fakeid**

复制代码 代码如下:

public static ArrayList SubscribeMP()  
    \{  
        try  
        \{  
            CookieContainer cookie = null;  
            string token = null;  
            cookie = WeiXinLogin.LoginInfo.LoginCookie;//取得cookie  
            token = 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);  
        \}  
    \}

[http_http_xiazai.jb51.net_201309_yuanma_webchat.rar]: http://http//xiazai.jb51.net/201309/yuanma/webchat.rar