commons-httpclient.jar的使用(处理页面重定向)

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package com.test;

import java.io.IOException;

import org.apache.commons.httpclient.Header;

import org.apache.commons.httpclient.HttpClient;

import org.apache.commons.httpclient.HttpMethod;

import org.apache.commons.httpclient.HttpStatus;

import org.apache.commons.httpclient.StatusLine;

import org.apache.commons.httpclient.methods.GetMethod;

public class RedirectTest {

public static void main(String[] args) throws IOException{

HttpClient client = new HttpClient();

client.getHostConfiguration();

// client.getHostConfiguration().setHost("www.imobile.com.cn", 80, "http");

// client.getHostConfiguration().setHost("", 80);

HttpMethod method = new GetMethod("http://127.0.0.1:8080/httpClient/a.jsp");

client.executeMethod(method);

StatusLine statusMsg = method.getStatusLine();

System.out.println(statusMsg);

System.out.println(method.getResponseBodyAsString());

System.out.println("--------------------------------------------------------------------------");

//检查是否有重定向

int statusCode = method.getStatusCode();

System.out.println(statusCode);

if (statusCode == HttpStatus.SC_MOVED_PERMANENTLY || statusCode == HttpStatus.SC_MOVED_TEMPORARILY

|| statusCode == HttpStatus.SC_SEE_OTHER || statusCode == HttpStatus.SC_TEMPORARY_REDIRECT){

//读取新的URL地址

Header header = method.getRequestHeader("location");

if (header != null){

String newurl = header.getValue();

if (header == null || header.equals("")){

newurl = "/";

}

GetMethod redirect = new GetMethod(newurl);

client.executeMethod(redirect);

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

redirect.releaseConnection();

}else{

System.out.println("Invialid Redirect///");

}