httpclient 保持会话的交互

   package core;

import java.io.BufferedReader;
import java.io.InputStreamReader;

import org.apache.commons.httpclient.Cookie;
import org.apache.commons.httpclient.Header;
import org.apache.commons.httpclient.HttpClient;
import org.apache.commons.httpclient.NameValuePair;
import org.apache.commons.httpclient.cookie.CookiePolicy;
import org.apache.commons.httpclient.methods.PostMethod;
import org.apache.commons.httpclient.params.HttpMethodParams;

public class ClientCore {

 public static void main(String[] args) {
  String url = "http://login.taobao.com/member/login.jhtml";// 论坛的登陆页面
  String url2 = "http://bbs.taobao.com/catalog/thread/154521-256344700.htm?action=/forum/reply_action";// 论坛的发贴页面
  HttpClient httpClient = new HttpClient();
  
  httpClient.getParams().setCookiePolicy(
    CookiePolicy.BROWSER_COMPATIBILITY);
  PostMethod postMethod = new PostMethod(url);
  PostMethod postMethod2 = new PostMethod(url2);
  NameValuePair[] data = {
    new NameValuePair("TPL_username", "w627782664"),
    new NameValuePair("TPL_password", "wangjianxu0808"),
    new NameValuePair("action", "Authenticator"),
    new NameValuePair("event_submit_do_login", "anything"),
    new NameValuePair("TPL_redirect_url", "http://bbs.taobao.com/"),
    
  };
  postMethod.setRequestHeader("Referer",
    "http://discuzdemo.c88.53dns.com/index.php");
  postMethod.setRequestHeader("Host", "discuzdemo.c88.53dns.com");
  postMethod
    .setRequestHeader(
      "User-Agent",
      "Mozilla/5.0 (Windows; U; Windows NT 5.1; zh-CN; rv:1.9.1.2) Gecko/20090729 Firefox/3.5.2");
  postMethod
    .setRequestHeader("Accept",
      "text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8");
  postMethod.setRequestBody(data);
  try {
   httpClient.executeMethod(postMethod);
   StringBuffer response = new StringBuffer();
   BufferedReader reader = new BufferedReader(new InputStreamReader(
     postMethod.getResponseBodyAsStream(), "gb2312"));// 以gb2312编码方式打印从服务器端返回的请求
   String line;
   while ((line = reader.readLine()) != null) {
    response.append(line).append(
      System.getProperty("line.separator"));
   }
   reader.close();
   Header header = postMethod.getResponseHeader("Set-Cookie");
   Cookie[] cookies = httpClient.getState().getCookies();// 取出登陆成功后，服务器返回的cookies信息，里面保存了服务器端给的“临时证”
   String tmpcookies = "";
   for (Cookie c : cookies) {
    tmpcookies = tmpcookies + c.toString() + ";";
    System.out.println(c);
   }
   System.out.println(tmpcookies);
   // System.out.println(header.getValue());
   System.out.println(response);
   NameValuePair[] data2 = { new NameValuePair("_fmw.publis._0.g", "154521"),
     new NameValuePair("_fmw.publis._0.t", "255847173"),
     new NameValuePair("event_submit_do_publish", "anything"),
     new NameValuePair("_fmw.publis._0.c", "测试123测试123测试123测试123测试123测试123测试123测试123测试123测试123测试123测试123")
     };
   postMethod2.setRequestHeader("cookie", tmpcookies);// 将“临时证明”放入下一次的发贴请求操作中
   postMethod2.getParams().setParameter(
     HttpMethodParams.HTTP_CONTENT_CHARSET, "gbk");// 因为发贴时候有中文，设置一下请求编码
   postMethod2.setRequestHeader("Referer",
     "http://discuzdemo.c88.53dns.com/forumdisplay.php?fid=4");
   postMethod2.setRequestHeader("Host", "discuzdemo.c88.53dns.com");

   postMethod2
     .setRequestHeader(
       "User-Agent",
       "Mozilla/5.0 (Windows; U; Windows NT 5.1; zh-CN; rv:1.9.1.2) Gecko/20090729 Firefox/3.5.2");
   postMethod2
     .setRequestHeader("Accept",
       "text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8");// 以上操作是模拟浏览器的操作，使用服务器混淆

   postMethod2.setRequestBody(data2);
   httpClient.executeMethod(postMethod2);
   StringBuffer response1 = new StringBuffer();
   BufferedReader reader1 = new BufferedReader(new InputStreamReader(
     postMethod2.getResponseBodyAsStream(), "gb2312"));
   String line1;
   while ((line1 = reader1.readLine()) != null) {
    response1.append(line1).append(
      System.getProperty("line.separator"));
   }
   reader1.close();
   System.out.println(response1);
  } catch (Exception e) {
   System.out.println(e.getMessage());
   // TODO: handle exception
  } finally {
   postMethod.releaseConnection();
   postMethod2.releaseConnection();
  }

 }

}