redirectdemo.java~5~

这是用JAVA的SOCKET类实现的HTTP CLIENT的代码。通过它可以让原来很头疼的事情现在轻松的解决

package org.apache.commons.httpclient.demo;

import org.apache.commons.httpclient.HttpClient;
import org.apache.commons.httpclient.methods.PostMethod;
import org.apache.commons.httpclient.HttpStatus;
import org.apache.commons.httpclient.Header;
import org.apache.commons.httpclient.methods.GetMethod;
import java.io.*;

public class RedirectDemo {
    public static void main(String[] args) {
        HttpClient client = new HttpClient();
        //设置代理服务器地址和端口
        //client.getHostConfiguration().setProxy("90.0.12.21", 808);
        //client.getHostConfiguration().setHost("www.imobile.com.cn", 80, "http");

        PostMethod post = new PostMethod("/search2005.php");

        try {
            client.executeMethod(post);
        } catch (IOException ex) {
        }

        System.out.println(post.getStatusLine().toString());

        post.releaseConnection();

        //检查是否重定向

        int statuscode = post.getStatusCode();

        if ((statuscode == HttpStatus.SC_MOVED_TEMPORARILY) ||
            (statuscode == HttpStatus.SC_MOVED_PERMANENTLY) ||
            (statuscode == HttpStatus.SC_SEE_OTHER) ||
            (statuscode == HttpStatus.SC_TEMPORARY_REDIRECT)) {

            //读取新的URL地址
            Header header = post.getResponseHeader("location");
            if (header != null) {
                String newuri = header.getValue();
                if ((newuri == null) || (newuri.equals(""))) {
                    newuri = "/";
                }

                GetMethod redirect = new GetMethod(newuri);

                try {
                    client.executeMethod(redirect);
                } catch (IOException ex1) {
                }

                System.out.println("Redirect:" +redirect.getStatusLine().toString());

                redirect.releaseConnection();
            } else {
                System.out.println("Invalid redirect");
            }
        }
    }
}