httpclient 实现模拟登陆的问题

Question

我想用httpclient 做一个摸模拟登陆人人网（就是类似的网站，要输入用户名密码的那种，论坛啦网友啦）的应用程序，我知道用httpclient的post方法实现向服务器提交参数（账户名和密码）的方法，可是接下来我要怎样才能知道我是否登陆成功了呢？如果登录成功就放会“登陆成功！”反之则返回“登录失败！”我要如何通过服务器返回来的信息获得是否登录成功的信息呢？希望给位大侠能不吝赐教啊！

Answer 1

httpclient 模拟登陆网站 获取网站内容程序
package org.apache.http.examples.client;

import java.io.IOException;

import org.apache.commons.httpclient.*;
import org.apache.commons.httpclient.cookie.*;
import org.apache.commons.httpclient.methods.*;

public class FormLoginDemo {
static final String LOGON_SITE = "www.intellitrans.com.cn";
static final int LOGON_PORT = 8081;
static final String loginurl = "/zyzg/logon.do";
static final String loginparematername = "userName";
static final String loginparematerpass = "password";
static final String username = "wangpx";
static final String password = "111111";

static final String getUrl = "/zyzg/hrmsub/hrm-deptlist.do";


public static void main(String[] args) throws Exception {
    HttpClient client = imitateLogin(LOGON_SITE, LOGON_PORT, loginurl, loginparematername, loginparematerpass, username, password);
    // 访问所需的页面
    imitateGetUrl(client, getUrl);
}

//模拟等录 
private static HttpClient imitateLogin(String LOGON_SITE, int LOGON_PORT,
        String loginurl,String loginparematername,String loginparematerpass,String username,String password) throws IOException, HttpException {
    HttpClient client = new HttpClient();
    client.getHostConfiguration().setHost(LOGON_SITE, LOGON_PORT);
    // 模拟登录页面
    PostMethod post = new PostMethod(loginurl);
    NameValuePair name = new NameValuePair(loginparematername,username );
    NameValuePair pass = new NameValuePair(loginparematerpass,password );
    post.setRequestBody(new NameValuePair[] { name, pass });
    int status = client.executeMethod(post);
    System.out.println(post.getResponseBodyAsString());
    post.releaseConnection();
    // 查看cookie信息
    CookieSpec cookiespec = CookiePolicy.getDefaultSpec();
    Cookie[] cookies = cookiespec.match(LOGON_SITE, LOGON_PORT, "/", false,
            client.getState().getCookies());
    if (cookies != null)
        if (cookies.length == 0) {
            System.out.println("None");
        } else {
            for (int i = 0; i < cookies.length; i++) {
                System.out.println(cookies[i].toString());
            }
        }
    return client;
}
//模拟等录 后获取所需要的页面
private static void imitateGetUrl(HttpClient client, String getUrl)
        throws IOException, HttpException {
    PostMethod post2 = new PostMethod(getUrl);
    // GetMethod get = new
    // GetMethod("/social/article/gallery_show/p_104846/");
    client.executeMethod(post2);
    System.out.println(post2.getResponseBodyAsString());
    post2.releaseConnection();
}

}