前段时间想做个QQ的一个辅助工具，需要登陆QQ，从网上搜索了些资料，自己进行了实践和改造，可以成功登陆qq

如图：

 1、获取登陆验证码，如下，如果获取的验证码为！开头，就可以不用获取图片验证码，否则需要获取图片验证码，地址为：}，vc_type为上次获取的验证码，注意:获取这些信息时，必须返回Cookie

 1         

public 

static User getVerifyCodeImg(

string qq)

 2         {

 3             HTTPModel hTTPModel = 

new HTTPModel(

string.Format(

"

http://ptlogin2.qq.com/check?uin={0}&appid=15000101

", qq));

 4             WebHTTPUtil.sendHTTP(hTTPModel);

 5             CookieCollection cookie = hTTPModel.ReturnCookies;

 6             

string value = WebHTTPUtil.GetValue(hTTPModel.ReturnHtml, 

"

','

", 

"

'

");

 7             Console.WriteLine(

"

yzm:

" + value);

 8             User user = 

new User();

 9             

if (value.Contains(

"

!

"))

10             {

11                 user.VerifyCode = value;

12             }

13             

else

14             {

15                 

string imgUrl = 

string.Format(

"

http://captcha.qq.com/getimage?aid=1003903&&uin={0}&vc_type={1}

", 

qq, value);

16                 user.VerifyCodeUrl = imgUrl;

17             }

18             user.QQNum = qq;

19             user.Cookie = cookie;

20             

return user;

21 

22         }

2、获取验证码图片，设置图片控件的image属性this.verifyImg.Image = WebHTTPUtil.byteArrayToImage(imgUrl, ref cookie);

 1         

public 

static Image byteArrayToImage(

string url, 

ref CookieCollection cookie)

 2         {

 3             Uri requestUri = 

new Uri(url);

 4             WebRequest webRequest = WebRequest.Create(requestUri);

 5             Image result;

 6             

using (WebResponse response = webRequest.GetResponse())

 7             {

 8                 

if (!

string.IsNullOrEmpty(response.Headers[HttpResponseHeader.SetCookie]))

 9                 {

10                     CookieContainer cookieContainer = 

new CookieContainer();

11                     cookie = 

new CookieCollection();

12                     cookieContainer.SetCookies(webRequest.RequestUri, response.Headers[HttpResponseHeader.SetCookie]);

13                     cookie.Add(cookieContainer.GetCookies(webRequest.RequestUri));

14                 }

15                 

using (Stream responseStream = response.GetResponseStream())

16                 {

17                     result = Image.FromStream(responseStream);

18                 }

19             }

20             

return result;

21         }

3.对QQ密码和验证码进行散列，使用MD5

 

        

public 

static 

string binl2hex(

byte[] buffer)

        {

            StringBuilder stringBuilder = 

new StringBuilder();

            

for (

int i = 

0; i < buffer.Length; i++)

            {

                stringBuilder.Append(buffer[i].ToString(

"

x2

"));

            }

            

return stringBuilder.ToString();

        }

        

public 

static 

string md5_3(

string input)

        {

            MD5 mD = MD5.Create();

            

byte[] buffer = mD.ComputeHash(Encoding.Default.GetBytes(input));

            buffer = mD.ComputeHash(buffer);

            buffer = mD.ComputeHash(buffer);

            

return WebHTTPUtil.binl2hex(buffer);

        }

        

public 

static 

string md5(

string input)

        {

            

byte[] buffer = MD5.Create().ComputeHash(Encoding.Default.GetBytes(input));

            

return WebHTTPUtil.binl2hex(buffer);

        }        

 1         

public 

static User LoginQZone(

string qq, 

string pwd, 

string verifyCode, CookieCollection cookie, User u)

 2         {

 3             

//

object password = WebHTTPUtil.GetPassword(pwd, verifyCode);

 4 

            System.Security.Cryptography.MD5 md5 = 

new System.Security.Cryptography.MD5CryptoServiceProvider();

 5             

string QQPwd = Md5(Md5_3(pwd) + verifyCode.ToUpper());

 6             

string loginUrl = 

string.Format(

"

http://ptlogin2.qq.com/login?u={0}&p={1}&verifycode={2}&aid=15000101&u1=http%3A%2F%2Fimgcache.qq.com%2Fqzone%2Fv5%2Floginsucc.html%3Fpara%3Dizone&h=1&ptredirect=1&ptlang=2052&from_ui=1&dumy=&fp=loginerroralert

", qq, QQPwd, verifyCode);

 7             HTTPModel hTTPModel = 

new HTTPModel(loginUrl);

 8             hTTPModel.Encoding = Encoding.UTF8;

 9             hTTPModel.PostCookies = cookie;

10             WebHTTPUtil.sendHTTP(hTTPModel);

11             User result;

12             Console.WriteLine(QQPwd + 

"

  

" + verifyCode);

13             Console.WriteLine(loginUrl);

14             Console.WriteLine(hTTPModel.ReturnHtml);

15 }

当打印出如下，代表登陆成功

ptuiCB('0','0','http://imgcache.qq.com/qzone/v5/loginsucc.html?para=izone','1','登录成功！', 'heavy');

第一步QQ登陆完成