Java tutorial
/* * Copyright 1999-2010 Alibaba.com All right reserved. This software is the * confidential and proprietary information of Alibaba.com ("Confidential * Information"). You shall not disclose such Confidential Information and shall * use it only in accordance with the terms of the license agreement you entered * into with Alibaba.com. */ package yangqi.hc; import java.io.BufferedReader; import java.io.IOException; import java.io.InputStream; import java.io.InputStreamReader; import org.apache.http.Header; import org.apache.http.HttpEntity; import org.apache.http.HttpResponse; import org.apache.http.client.ClientProtocolException; import org.apache.http.client.HttpClient; import org.apache.http.client.methods.HttpGet; import org.apache.http.impl.client.DefaultHttpClient; /** * HttpClientTest.javaTODO * @author yangqi 2013-7-4 9:46:53 */ public class HttpClientTest { /** * @param args * @throws IOException * @throws ClientProtocolException */ public static void main(String[] args) throws ClientProtocolException, IOException { // TODO Auto-generated method stub HttpClient httpclient = new DefaultHttpClient(); // Prepare a request object HttpGet httpget = new HttpGet("http://www.apache.org/"); // Execute the request HttpResponse response = httpclient.execute(httpget); // Examine the response status System.out.println(response.getStatusLine()); System.out.println(response.getLocale()); for (Header header : response.getAllHeaders()) { System.out.println(header.toString()); } // Get hold of the response entity HttpEntity entity = response.getEntity(); System.out.println("==========entity========="); System.out.println(entity.getContentLength()); System.out.println(entity.getContentType()); System.out.println(entity.getContentEncoding()); // If the response does not enclose an entity, there is no need // to worry about connection release if (entity != null) { InputStream instream = entity.getContent(); try { BufferedReader reader = new BufferedReader(new InputStreamReader(instream)); // do something useful with the response System.out.println(reader.readLine()); } catch (IOException ex) { // In case of an IOException the connection will be released // back to the connection manager automatically throw ex; } catch (RuntimeException ex) { // In case of an unexpected exception you may want to abort // the HTTP request in order to shut down the underlying // connection and release it back to the connection manager. httpget.abort(); throw ex; } finally { // Closing the input stream will trigger connection release instream.close(); } // When HttpClient instance is no longer needed, // shut down the connection manager to ensure // immediate deallocation of all system resources httpclient.getConnectionManager().shutdown(); } } }