模拟登录

public class QQ {
  public static final String QQNUM = "1985063628"; // QQ行号码
  public static final String PASSWORD = "JDCZ1gsdps"; // 密码

  private static DefaultHttpClient httpclient = new DefaultHttpClient();
  private static boolean loginFlag = false;
  private static List<Cookie> cookies;
  private static HttpResponse response;
  private static HttpGet request;
  private static String verifyString;
  private static String verifySession;

  private static void getVerifyImage() throws Exception {
   String url = "http://ptlogin2.qq.com/getimage?aid=8000108&0.7022592303274631";
   HttpGet httpget = new HttpGet(url);
   httpget.addHeader("Cookie", "");
   httpget.setHeader("Accept", "text/html, */*");
   httpget
     .addHeader("User-Agent",
       "Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 6.0; SLCC1; .NET CLR 2.0.50727)");
   // httpget.addHeader("Connection", "close");
   // httpget.setHeader("User-Agent", "Mozilla/5.0 (Windows; U; Windows NT
   // 5.1; zh-CN; rv:1.8.1.20) Gecko/20081217 Firefox/2.0.0.20")
   response = httpclient.execute(httpget);

   Header[] headers = response.getHeaders("Set-Cookie");// .getAllHeaders();

   for (Header h : headers) {
    System.out.println(h);
   }
   verifySession = headers[0].getValue().split(";|=")[1];

   InputStream in = response.getEntity().getContent();
   File verifyFile = new File(QQ.class.getResource("output").getPath()
     + "/verifycode.jpg");
   FileOutputStream out = new FileOutputStream(verifyFile);
   byte[] buf = new byte[1024];
   while (in.read(buf) != -1) {
    out.write(buf);
   }
   out.flush();
   System.out.println("验证码图片已生成。路径：" + verifyFile.getCanonicalPath());
   System.out.println("请输入验证码：");
   verifyString = new BufferedReader(new InputStreamReader(System.in))
     .readLine();
   while (verifyString.length() != 4) {
    System.out.println("验证码长度有误，请输入4位验证码：");
    verifyString = new BufferedReader(new InputStreamReader(System.in))
      .readLine();
   }
  }

  public static void doLogin() throws Exception {
   if (!loginFlag) {
    getVerifyImage();
    HttpPost httpost = new HttpPost("http://ptlogin2.qq.com/login");

    List<NameValuePair> nvps = new ArrayList<NameValuePair>();
    nvps.add(new BasicNameValuePair("u", QQNUM));
    nvps.add(new BasicNameValuePair("p", MD5Security.md5(MD5Security.md5_3(PASSWORD)
      + verifyString.toUpperCase())));

    nvps.add(new BasicNameValuePair("verifycode", verifyString));
    nvps.add(new BasicNameValuePair("aid", "8000108"));
    nvps.add(new BasicNameValuePair("u1",
      "http://imgcache.qq.com/qzone/v5/loginsucc.html"));
    nvps.add(new BasicNameValuePair("fp", "loginerroralert"));
    nvps.add(new BasicNameValuePair("h", "1"));
    nvps.add(new BasicNameValuePair("ptredirect", "0"));
    nvps.add(new BasicNameValuePair("ptlang", "0"));
    nvps.add(new BasicNameValuePair("from_ui", "1"));
    nvps.add(new BasicNameValuePair("dumy", "1"));

    httpost
      .setHeader("User-Agent",
        "Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 6.0; SLCC1; .NET CLR 2.0.50727)");
    httpost.setHeader("Cookie", "verifysession=" + verifySession + ";");
    httpost
      .setHeader(
        "Referer",
        "http://ui.ptlogin2.qq.com/cgi-bin/login?link_target=blank&target=self&appid=8000108&qlogin_jumpname=vipmyqq&f_url=loginerroralert&qlogin_auto_login=1&s_url=http%3A//imgcache.qq.com/qzone/v5/loginsucc.html&qlogin_param=jump_url%3D");
    httpost.setHeader("Accept", "text/html, */*");
    httpost.removeHeaders("Cookie2");
    httpost.removeHeaders("Expect");
    httpost.setEntity(new UrlEncodedFormEntity(nvps, HTTP.UTF_8));
    response = httpclient.execute(httpost);

    cookies = httpclient.getCookieStore().getCookies();
    if (cookies.size() < 3) {
     System.err.println("登录失败...");
     loginFlag = false;
    } else {
     System.out.println("登录成功...");
     for (Cookie c : cookies) {
      System.out.println(c);
     }
     loginFlag = true;
    }
   }

  }

  public static void main(String[] args) throws Exception {
   doLogin();
  }