httpclient3 自动登陆淘宝， 开心网
前提：
需要用到的java包
commons-httpclient-3.1.jar
commons-logging.jar
log4j-1.2.15.jar
commons-codec.jar
登陆淘宝的例子：
package com.spider.cron;import java.io.IOException;import org.apache.commons.httpclient.Cookie;import org.apache.commons.httpclient.Header;import org.apache.commons.httpclient.HttpClient;import org.apache.commons.httpclient.HttpException;import org.apache.commons.httpclient.NameValuePair;import org.apache.commons.httpclient.methods.GetMethod;import org.apache.commons.httpclient.methods.PostMethod;public class TaoBaoLogin {private static final String LOGON_SITE = "http://www.taobao.com";private static final int LOGON_PORT = 80;private static final String TAOBAO_BASE_LOGIN_BEFORE = "http://member1.taobao.com/member/login.jhtml?f=top&redirectURL=http%3A%2F%2Fwww.taobao.com%2F";private static final String TAOBAO_BASE_LOGIN = "http://login.taobao.com/member/login.jhtml";public static void main(String args[]) throws HttpException, IOException {String taobaoUser="woshigoojje@163.com";String taobaoPwd="3DES_2_000000000000000000000000000000_61F0B8BE021BBBDD020919017B6816F5";String taobaoTid="XOR_1_000000000000000000000000000000_63584054400B0F717B750370";HttpClient client = new HttpClient();client.getHostConfiguration().setHost(LOGON_SITE, LOGON_PORT);String _tb_token_Value="";Cookie[] cookies = client.getState().getCookies(); String responseString = processGet(client,null,TAOBAO_BASE_LOGIN_BEFORE,cookies,true,true); responseString=responseString.substring(responseString.indexOf("_tb_token_")+"_tb_token_".length()); responseString=responseString.substring(responseString.indexOf("_tb_token_")+"_tb_token_".length()); _tb_token_Value=responseString.substring(responseString.indexOf("value=")+"value='".length(),responseString.indexOf(">")-1); PostMethod post = new PostMethod(TAOBAO_BASE_LOGIN); NameValuePair[] params= new NameValuePair[] { new NameValuePair("_oooo_", ""),new NameValuePair("_tb_token_", _tb_token_Value),new NameValuePair("abtest", ""),new NameValuePair("action", "Authenticator"),new NameValuePair("actionForStable", "enable_post_user_action"),new NameValuePair("CtrlVersion", "1,0,0,7"),new NameValuePair("done", ""),new NameValuePair("event_submit_do_login", "anything"),new NameValuePair("from", ""),new NameValuePair("loginType", "4"),new NameValuePair("mcheck", ""),new NameValuePair("mi_uid", ""),new NameValuePair("pstrong", ""),new NameValuePair("support", "000001"),new NameValuePair("tid", taobaoTid),new NameValuePair("TPL_password", taobaoPwd),new NameValuePair("TPL_redirect_url", ""),new NameValuePair("TPL_redirect_url", ""),new NameValuePair("TPL_redirect_url", ""),new NameValuePair("TPL_redirect_url", ""),new NameValuePair("TPL_redirect_url", ""),new NameValuePair("TPL_redirect_url", ""),new NameValuePair("TPL_username", taobaoUser),new NameValuePair("yparam", "") }; processPost(client, post, TAOBAO_BASE_LOGIN, params, cookies, true, false);Header header=post.getResponseHeader("Location");String redirectUrl=header.getValue();responseString = processGet(client, null, redirectUrl, cookies, true, true);responseString=responseString.substring(0,responseString.indexOf("我的彩票"));System.out.println("main(String[]) - " + responseString); String caiPiaoUrl=responseString.substring(responseString.lastIndexOf("<a")+"<a href='".length(),responseString.lastIndexOf(">")-1);processGet(client, null, caiPiaoUrl, cookies, true, false);}public static String processGet(HttpClient client,GetMethod get,String url,Cookie[] cookies,boolean needAppendCookies,boolean needResponse) throws IOException{if(client==null || url==null || url=="") return "";if(get==null)get=new GetMethod();get = new GetMethod(url); if(cookies!=null)get.setRequestHeader("Cookie" , cookies.toString()); client.executeMethod(get); if(needAppendCookies){ cookies = client.getState().getCookies(); client.getState().addCookies(cookies); } if(needResponse) return get.getResponseBodyAsString(); get.releaseConnection();return "";}public static String processPost(HttpClient client,PostMethod post,String url,NameValuePair[] params,Cookie[] cookies,boolean needAppendCookies,boolean needResponse) throws IOException{if(client==null || url==null || url=="") return "";if(post==null)post = new PostMethod(url);if(params!=null && params.length>0)post.setRequestBody(params);if(cookies!=null)post.setRequestHeader("Cookie" , cookies.toString());client.executeMethod(post);if(needAppendCookies){ cookies = client.getState().getCookies(); client.getState().addCookies(cookies); }if(needResponse) return post.getResponseBodyAsString();post.releaseConnection();return "";}public static String processDetail(String tempStr,String startFlag,String endFlag,int starts,int ends){if(tempStr==null || "".equals(tempStr)) return "";int start=tempStr.indexOf(startFlag);int end=tempStr.indexOf(endFlag);if(start==-1 || end==-1 || (end-ends)<(start+starts)) return "";try{tempStr=tempStr.substring(start+starts,end-ends);}catch(Exception e){System.out.println("processDetail(String, String, String, int, int) " + e.toString()); return "";}return tempStr;}}package com.spider.cron;import org.apache.commons.httpclient.Cookie;import org.apache.commons.httpclient.HttpClient;import org.apache.commons.httpclient.NameValuePair;import org.apache.commons.httpclient.methods.GetMethod;import org.apache.commons.httpclient.methods.PostMethod;public class LoginKaixin { private static final String LOGON_SITE = "http://www.kaixin001.com"; private static final int LOGON_PORT = 80; public static void main(String[] args) throws Exception { HttpClient client = new HttpClient(); client.getHostConfiguration().setHost(LOGON_SITE, LOGON_PORT); // 登录页面 PostMethod post = new PostMethod( "http://www.kaixin001.com/login/login.php"); NameValuePair ie = new NameValuePair("User-Agent", "Mozilla/4.0 (compatible; MSIE 6.0; Windows 2000)"); NameValuePair url = new NameValuePair("url", "/home/"); NameValuePair username = new NameValuePair("email", "xxx@163.com"); NameValuePair password = new NameValuePair("password", "xxxxxx"); post.setRequestBody(new NameValuePair[] { ie, url, username, password }); client.executeMethod(post); System.out .println("******************************登录******************************"); Cookie[] cookies = client.getState().getCookies(); client.getState().addCookies(cookies); post.releaseConnection(); System.out .println("******************************页面转向******************************"); String newUrl = "http://www.kaixin001.com/home/"; System.out.println("==========Cookies============"); int i = 0; for (Cookie c : cookies) { System.out.println(++i + ": " + c); } client.getState().addCookies(cookies); post.releaseConnection(); GetMethod get = new GetMethod(newUrl); get.setRequestHeader("Cookie", cookies.toString()); client.executeMethod(get); String responseString = get.getResponseBodyAsString(); // 登录后首页的内容 System.out.println(responseString); get.releaseConnection(); System.out .println("******************************组件功能******************************"); // "http://www.kaixin001.com/!slave/index.php", "朋友买卖" // "http://www.kaixin001.com/!parking/index.php", "争车位" // "http://www.kaixin001.com/!house/index.php?_lgmode=pri", "买房子" // http://www.kaixin001.com/!house/index.php?_lgmode=pri&t=49 // "http://www.kaixin001.com/!house/garden/index.php","花园" // (1)进入朋友买卖**************** System.out .println("******************************(1)进入朋友买卖******************************"); String slave = "http://www.kaixin001.com/!slave/index.php"; get = new GetMethod(slave); get.setRequestHeader("Cookie", cookies.toString()); client.executeMethod(get); responseString = get.getResponseBodyAsString(); System.out.println(responseString); get.releaseConnection(); // (2)进入争车位**************** System.out .println("******************************(2)进入争车位******************************"); String parking = "http://www.kaixin001.com/!parking/index.php"; get = new GetMethod(parking); get.setRequestHeader("Cookie", cookies.toString()); client.executeMethod(get); responseString = get.getResponseBodyAsString(); System.out.println(responseString); get.releaseConnection(); // (3)进入买房子**************** System.out .println("******************************(3)进入买房子*******************************"); String house = "http://www.kaixin001.com/!house/index.php?_lgmode=pri&t=49"; get = new GetMethod(house); get.setRequestHeader("Cookie", cookies.toString()); client.executeMethod(get); responseString = get.getResponseBodyAsString(); System.out.println(responseString); get.releaseConnection(); // (4)进入花园**************** System.out .println("******************************(4)进入花园*******************************"); String garden = "http://www.kaixin001.com/!house/garden/index.php"; get = new GetMethod(garden); get.setRequestHeader("Cookie", cookies.toString()); client.executeMethod(get); responseString = get.getResponseBodyAsString(); System.out.println(responseString); get.releaseConnection(); }}