C# 登录QQ网站并获取QQ相关信息

关注

原创最新推荐文章于 2025-08-16 09:37:21 发布 1.4w 阅读 AI 写同款· GEO 优化 ›

QQ第三方网站登录后台代码演示 using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Drawing; using System.Linq; using System.Text; using System.Windows.Forms; using 阅读详情

本文以登录http://id.qq.com为例，获取用户等级、Q龄等相关信息。
本文界面使用WPF制作
技术涵盖：C#、wpf、HttpWebRequest、HttpWebResponse
（.net framework 4.5，当然你也可以使用4.0。不知道为什么使用3.5无法得到正确的结果，代码一模一样，还望高人指点！）

1、获取独立登录框地址

1）首先用谷歌浏览器打开http://id.qq.com，并用开发人员工具（快捷键：ctrl+shift+i）查看登陆框地址

2）Open link in new tab

到这里我们已经得到独立登陆框的地址了，方便调试和拦截请求。

成果

登录框地址：

http://ui.ptlogin2.qq.com/cgi-bin/login?appid=1006102&hide_title_bar=1&begin_time=1347444392246

&css=http%3A%2F%2Fimgcache.qq.com%2Fptcss%2Fr1%2Fjt%2F1006102%2Fpt_login.css

&f_url=loginerroralert&no_verifyimg=1&qlogin_jumpname=jump&hide_close_icon=1&s_url=http://id.qq.com/index.html

URL中有很多控制样式的参数，可简化为如下地址：

http://ui.ptlogin2.qq.com/cgi-bin/login?appid=1006102&s_url=http://id.qq.com/index.html

2、获取登录时请求的地址

通过浏览器的开发人员工具或其他HTTP拦截工具获得登录时请求的地址。

1）打开上一步得到的登录地址，并开启浏览器的开发人员工具，用以拦截请求。

2）随便输入一个号码、密码、验证码后点击登录，得到如下结果：

我们可以看到一共发送了3个请求：

请求名称	返回值	请求地址	描述
check	不通过： ptui_checkVC('1', 'a89853e618880c1b93041bda88f5fb673c8eb5555a8850fd', '\x00\x00\x00\x00\x01\x53\x15\x8e'); 通过： ptui_checkVC('0','!5A3', '\x00\x00\x00\x00\x05\xef\x0f\xba');	http://check.ptlogin2.qq.com/check? uin=22222222&appid=1006102&r=0.10299430438317358	当输入QQ号码后文本框失去焦点时发送该请求，用于检查此次登录是否需要验证码。
getimage	验证码图片	http://captcha.qq.com/getimage?aid=1006102&r=0.06791123608127236&uin=22222222	如果上一步的check方法不通过则会自动发送这个请求获取验证码。
login	ptuiCB('3','0','','0', '您输入的帐号或密码不正确，请重新输入。', '22222222');	http://ptlogin2.qq.com/login?u=22222222&p=712F9A90BABE147B7A3A4427DF48698C&verifycode=gqfj& aid=1006102&u1=http%3A%2F%2Fid.qq.com%2Findex.html& h=1&ptredirect=1&ptlang=2052&from_ui=1&dumy=& fp=loginerroralert&action=8-29-82478035&mibao_css=&t=1&g=1	点击登录按钮时发送该请求进行登录操作。

值得一提的是，通过调试发现点击登录后密码在客户端是通过加密后再传输的（加密方法位于comm.js，有兴趣的可以在JS中查看如下方法）。

            var M = C.p.value;
            var I = hexchar2bin(md5(M));
            var H = md5(I + pt.uin);
            var G = md5(H + C.verifycode.value.toUpperCase());

加密方法翻译为C#后如下：

public class PasswordHelper
    {
        /// <summary>
        /// 根据QQ号码和验证码加密密码
        /// </summary>
        /// <param name="qqNum">QQ号码</param>
        /// <param name="password">QQ密码</param>
        /// <param name="verifycode">验证码</param>
        /// <returns>密码密文</returns>
        public static string GetPassword(string qqNum, string password, string verifycode)
        {
            //uin为QQ号码转换为16位的16进制
            int qq;
            int.TryParse(qqNum, out qq);

            qqNum = qq.ToString("x");
            qqNum = qqNum.PadLeft(16, '0');

            String P = hexchar2bin(md5(password));
            String U = md5(P + hexchar2bin(qqNum)).ToUpper();
            String V = md5(U + verifycode.ToUpper()).ToUpper();
            return V;
        }

        public static string md5(string input)
        {
            byte[] buffer = MD5.Create().ComputeHash(Encoding.GetEncoding("ISO-8859-1").GetBytes(input));
            return binl2hex(buffer);
        }

        public static string binl2hex(byte[] buffer)
        {
            StringBuilder builder = new StringBuilder();
            for (int i = 0; i < buffer.Length; i++)
            {
                builder.Append(buffer[i].ToString("x2"));
            }
            return builder.ToString();
        }

        public static string hexchar2bin(string passWord)
        {
            StringBuilder builder = new StringBuilder();
            for (int i = 0; i < passWord.Length; i = i + 2)
            {
                builder.Append(Convert.ToChar(Convert.ToInt32(passWord.Substring(i, 2), 16)));
            }
            return builder.ToString();
        }

3、使用WPF构建登录框

直接用设计器拖一个登录界面出来，并模仿登录操作，使用HttpHelper发送上面的请求。

我所使用的HttpHelper如下，很简单，大家可以自行扩展：

    public class HttpHelper
    {
        private static string contentType = "application/x-www-form-urlencoded";
        private static string accept = "image/gif, image/x-xbitmap, image/jpeg, image/pjpeg, application/x-shockwave-flash, application/x-silverlight, application/vnd.ms-excel, application/vnd.ms-powerpoint, application/msword, application/x-ms-application, application/x-ms-xbap, application/vnd.ms-xpsdocument, application/xaml+xml, application/x-silverlight-2-b1, */*";
        private static string userAgent = "Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 6.1; WOW64; Trident/5.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0; .NET4.0C; .NET4.0E; Zune 4.7; BOIE9;ZHCN)";
        public static string referer = "http://ui.ptlogin2.qq.com/cgi-bin/login?appid=1006102&s_url=http://id.qq.com/index.html";

        /// <summary>
        /// 获取字符流
        /// </summary>
        /// <param name="url"></param>
        /// <param name="cookieContainer"></param>
        /// <returns></returns>
        public static Stream GetStream(string url, CookieContainer cookieContainer)
        {
            HttpWebRequest httpWebRequest = null;
            HttpWebResponse httpWebResponse = null;

            try
            {
                httpWebRequest = (HttpWebRequest)HttpWebRequest.Create(url);
                httpWebRequest.CookieContainer = cookieContainer;
                httpWebRequest.ContentType = contentType;
                httpWebRequest.Referer = referer;
                httpWebRequest.Accept = accept;
                httpWebRequest.UserAgent = userAgent;
                httpWebRequest.Method = "GET";
                httpWebRequest.ServicePoint.ConnectionLimit = int.MaxValue;

                httpWebResponse = (HttpWebResponse)httpWebRequest.GetResponse();
                Stream responseStream = httpWebResponse.GetResponseStream();

                return responseStream;
            }
            catch (Exception)
            {
                return null;
            }

        }

        /// <summary>
        /// 获取HTML
        /// </summary>
        /// <param name="url"></param>
        /// <param name="cookieContainer"></param>
        /// <returns></returns>
        public static string GetHtml(string url, CookieContainer cookieContainer)
        {
            HttpWebRequest httpWebRequest = null;
            HttpWebResponse httpWebResponse = null;
            try
            {
                httpWebRequest = (HttpWebRequest)HttpWebRequest.Create(url);
                httpWebRequest.CookieContainer = cookieContainer;
                httpWebRequest.ContentType = contentType;
                httpWebRequest.Referer = referer;
                httpWebRequest.Accept = accept;
                httpWebRequest.UserAgent = userAgent;
                httpWebRequest.Method = "GET";
                httpWebRequest.ServicePoint.ConnectionLimit = int.MaxValue;

                httpWebResponse = (HttpWebResponse)httpWebRequest.GetResponse();
                Stream responseStream = httpWebResponse.GetResponseStream();
                StreamReader streamReader = new StreamReader(responseStream, Encoding.UTF8);
                string html = streamReader.ReadToEnd();

                streamReader.Close();
                responseStream.Close();

                httpWebRequest.Abort();
                httpWebResponse.Close();

                return html;
            }
            catch (Exception)
            {
                return string.Empty;
            }

        }
    }

4、登录成功后查询我们需要的信息

通过拦截请求并分析得出我需要的信息位于如下请求中：

http://id.qq.com/cgi-bin/summary?ldw=f61210b82e57b6a466af5fcabe07b2d6720bf092d69e4eab

注：ldw从登录后的cookie中获取

然后继续发送请求：