httpClient模拟浏览器发请求

一、介绍

httpClient是Apache公司的一个子项目, 用来提高高效的、最新的、功能丰富的支持http协议的客户端编程工具包。完成可以模拟浏览器发起请求行为。

二、简单使用例子 ： 模拟浏览器发起访问谷歌首页请求

1、pom.xml 配置

    <dependency>
        <groupId>commons-httpclient</groupId>
        <artifactId>commons-httpclient</artifactId>
        <version>3.1</version>
    </dependency>

2、示例

import java.io.IOException;
 
import org.apache.commons.httpclient.HttpClient;
import org.apache.commons.httpclient.HttpException;
import org.apache.commons.httpclient.HttpMethod;
import org.apache.commons.httpclient.methods.GetMethod;
 
public class HttpClientDemo {
 
    public static void main(String[] args) throws HttpException, IOException {
 
        HttpClient httpClient = new HttpClient();
 
        String uri = "https://www.google.com";
        HttpMethod method = new GetMethod(uri);
        httpClient.executeMethod(method );
 
        //服务器返回状态
        print(method.getStatusLine());
        //返回的内容
        print(method.getResponseBodyAsString());
        //释放连接
        method.releaseConnection();
    }
 
    static void print(Object o) {
        System.out.println(o);
    }
 
}

打印出来的结果是这样子的