apache httpclient 获取页面源码-优快云博客

本文通过一个具体的示例介绍了如何使用Apache HttpClient库进行HTTP请求的发送及响应的处理。示例代码展示了创建HttpClient实例、执行HttpGet请求、读取响应内容等步骤，并说明了所需依赖的jar包。

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HttpClient 是 Apache Jakarta Common 下的子项目，用来提供高效的、最新的、功能丰富的支持 HTTP 协议的客户端编程工具包，并且它支持 HTTP 协议最新的版本和建议。

import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.impl.client.DefaultHttpClient;

public class ClientAbortMethod {

    public final static void main(String[] args) throws Exception {
        HttpClient httpclient = new DefaultHttpClient();

        HttpGet httpget = new HttpGet("http://www.apache.org/"); 

        System.out.println("executing request " + httpget.getURI());
        HttpResponse response = httpclient.execute(httpget);
        HttpEntity entity = response.getEntity();

        System.out.println("----------------------------------------");
        System.out.println(response.getStatusLine());
        if (entity != null) {
            BufferedReader reader = new BufferedReader(
                    new InputStreamReader(entity.getContent()));
           String str = null;
           if(null != (str = reader.readLine()) ){
               System.out.println(str);
            }

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

        httpget.abort();
        
        httpclient.getConnectionManager().shutdown();        
    }

}

使用的时候除了要加入http-client.jar包之外，还需要commons-logging.jar包。