httpClient快速入门

本示例是基于HttpClient 4.3,示例比较简单，就是请求http://www.656463.com，打印返回的状态和内容

package com._656463.java.httpclient;
 
import java.io.IOException;
 
import org.apache.http.HttpEntity;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.CloseableHttpResponse;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.util.EntityUtils;
 
public class Hello {
     
    public static void main(String[] args) throws ClientProtocolException, IOException {
        HttpClient httpclient = HttpClients.createDefault();
        HttpGet httpget = new HttpGet("http://www.656463.com");
        CloseableHttpResponse response = (CloseableHttpResponse) httpclient.execute(httpget); 
        int statusCode = response.getStatusLine().getStatusCode();  
        System.out.println(statusCode);
        if (statusCode == 200) {  
            HttpEntity entity = response.getEntity();  
            String responseStr = EntityUtils.toString(entity);  
            System.out.println(responseStr);
        } 
    }
}