使用HTTP client对需要用户身份验证的目标站点执行HTTP请求apache HTTP client

/** 
 来自 n o w    j a v a  . c o m**/

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 * to you under the Apache License, Version 2.0 (the

 * "License"); you may not use this file except in compliance

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 *   http://www.apache.org/licenses/LICENSE-2.0

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 * specific language governing permissions and limitations

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package org.apache.http.examples.client;


import org.apache.http.auth.AuthScope;

import org.apache.http.auth.UsernamePasswordCredentials;

import org.apache.http.client.CredentialsProvider;

import org.apache.http.client.methods.CloseableHttpResponse;

import org.apache.http.client.methods.HttpGet;

import org.apache.http.impl.client.BasicCredentialsProvider;

import org.apache.http.impl.client.CloseableHttpClient;

import org.apache.http.impl.client.HttpClients;

import org.apache.http.util.EntityUtils;


/**

 * A simple example that uses HttpClient to execute an HTTP request against

 * a target site that requires user authentication.

 */

public class ClientAuthentication {/* 来 自 n o w j a v a . c o m - 时  代  Java*/


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

        CredentialsProvider credsProvider = new BasicCredentialsProvider();

        credsProvider.setCredentials(new AuthScope("localhost", 443),

                new UsernamePasswordCredentials("username", "password"));

        CloseableHttpClient httpclient = HttpClients.custom()

                .setDefaultCredentialsProvider(credsProvider).build();

        try {

            HttpGet httpget = new HttpGet("http://localhost/");


            System.out.println("Executing request "

                    + httpget.getRequestL