HttpClient模拟登录回贴

经过HttpClient3 的N次处理,发现HttpClient3对Cookie的管理不是太好,总是传值出现问题,可以用HttpClient4一比较,发现他对Cookie的管理实在是太好了,不需要你去处理,下面是关于HttpClient4模拟登录回贴的代码,希望对用到这方面的朋友提供参考package com.httpclient4; import java.io.IOException;import java.util.ArrayList;import java.util.List;import org.apache.http.HttpEntity;import org.apache.http.HttpResponse;import org.apache.http.HttpStatus;import org.apache.http.NameValuePair;import org.apache.http.client.ClientProtocolException;import org.apache.http.client.HttpClient;import org.apache.http.client.entity.UrlEncodedFormEntity;import org.apache.http.client.methods.HttpGet;import org.apache.http.client.methods.HttpPost;import org.apache.http.impl.client.DefaultHttpClient;import org.apache.http.message.BasicNameValuePair;import org.apache.http.protocol.BasicHttpContext;import org.apache.http.protocol.HttpContext;import org.apache.http.util.EntityUtils;public class MainLogin { public static void main(String[] args) throws ClientProtocolException,   IOException {  HttpClient httpClient = new DefaultHttpClient();  List<NameValuePair> formparams = new ArrayList<NameValuePair>();  formparams.add(new BasicNameValuePair("u_name", "jbeduhai"));  formparams.add(new BasicNameValuePair("u_passwd", "xxx"));  UrlEncodedFormEntity entity = new UrlEncodedFormEntity(formparams,    "UTF-8");  HttpPost httppost = new HttpPost("http://passport.xxx.com.cn/login.jsp");  httppost.setEntity(entity);  HttpContext localContext = new BasicHttpContext();  HttpResponse response2 = httpClient.execute(httppost, localContext);  int statusCode = response2.getStatusLine().getStatusCode();  System.out.println("statusCode:" + statusCode);  System.out.println(EntityUtils.toString(response2.getEntity(),"UTF-8"));  EntityUtils.consume(response2.getEntity());      if (statusCode == HttpStatus.SC_MOVED_PERMANENTLY    || statusCode == HttpStatus.SC_MOVED_TEMPORARILY    || statusCode == HttpStatus.SC_SEE_OTHER    || statusCode == HttpStatus.SC_TEMPORARY_REDIRECT) {   String newUrl = response2.getLastHeader("Location").getValue();   System.out.println("从新定向的页面为：" + newUrl);   HttpGet get = new HttpGet(newUrl);   HttpEntity entity2 = httpClient.execute(get, localContext)     .getEntity();   String homePage = EntityUtils.toString(entity2,"UTF-8");   System.out.println(homePage);      EntityUtils.consume(entity2);      //取formhash值   String formhash =null;   if(homePage.indexOf("formhash=") != -1){    int pos = homePage.indexOf("formhash=");    formhash = homePage.substring(pos+9, pos+17);    System.out.println("------formhash="+formhash);   }      List<NameValuePair> postFormparams = new ArrayList<NameValuePair>();   postFormparams.add(new BasicNameValuePair("message", "很强的贴子啊，顶一个..."));   postFormparams.add(new BasicNameValuePair("subject", ""));   postFormparams.add(new BasicNameValuePair("formhash", formhash));   UrlEncodedFormEntity postEntity = new UrlEncodedFormEntity(postFormparams,     "UTF-8");      String pUrl="http://www.xxx.cn/forum.php?mod=post&action=reply&fid=1270&tid=14365186&extra=page%3D1&replysubmit=yes&infloat=yes&handlekey=fastpost";   HttpPost post3 = new HttpPost(pUrl);   post3.setEntity(postEntity);   HttpContext localContext3 = new BasicHttpContext();   HttpResponse response3 = httpClient.execute(post3, localContext3);   int statusCode3 = response3.getStatusLine().getStatusCode();   System.out.println("statusCode3:" + statusCode3);   System.out.println(EntityUtils.toString(response3.getEntity(),"UTF-8"));   EntityUtils.consume(response3.getEntity());  } } }

用到的jar包如下