httpclient4.3 访问外部url使用方法实例

httpclient4.3.3官方下载地址如下

http://hc.apache.org/downloads.cgi

httpcomponents-client-4.3.3-bin.zip

下载后把lib下面的jar放到工程项目的lib目录下

commons-codec-1.6.jar

commons-logging-1.1.3.jar

fluent-hc-4.3.3.jar

httpclient-4.3.3.jar

httpclient-cache-4.3.3.jar

httpcore-4.3.2.jar

httpmime-4.3.3.jar

httpclient4.3访问url代码如下：

使用get请求方式和post请求方式

import java.net.URI;

import org.apache.http.HttpEntity;
import org.apache.http.HttpStatus;
import org.apache.http.client.methods.CloseableHttpResponse;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.client.utils.URIBuilder;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.util.EntityUtils;


public class HttpclientTest {


	public static void main(String[] args) {
		CloseableHttpClient httpclient = HttpClients.createDefault();
		try {
		
			URI uri = new URIBuilder()
			.setScheme("http")
			.setHost("www.baidu.com")
			.setPath("/index.php")
			.addParameter("id", "1")
			.build();
			//get 请求方式
			HttpGet httpget = new HttpGet(uri);
			CloseableHttpResponse response =httpclient.execute(httpget);
			//post 请求方式
			//HttpPost httpPost = new HttpPost(uri);
			//CloseableHttpResponse response =httpclient.execute(httpPost);
			System.out.println(response.getStatusLine());
			String content;
			if( response.getStatusLine().getStatusCode() == HttpStatus.SC_OK){
				
				HttpEntity entity = response.getEntity();
				content = EntityUtils.toString(entity);
				System.out.println(content);
			}
		
		
		}
		catch (Exception e) {
			System.out.println(e);
		}
	}

}