android网络通信（1）

使用HttpURLConnecation 进行通信

1、GET 请求：

new Thread()
		{
			public void run() 
			{
				try
				{			
						//1. 连接网络  创建URL对象
						URL url = new URL("http://www.baidu.com");
						//2.打开连接  并获得HttpURLConnection对象
						HttpURLConnection huc = (HttpURLConnection) url.openConnection();
						//3. 读取该对象资源的数据 
						huc.setDoInput(true);// 设置读取数据
						huc.setRequestMethod("GET");//设置请求模式  GET
						huc.connect();//建立链接成功
						//获得读取流
						InputStream is = huc.getInputStream();			
						BufferedReader br = new BufferedReader(new InputStreamReader(is));
						//4.获取读取到的字符数据  创建StringBuilder 对象
						StringBuilder sb = new StringBuilder();
						//5.读取数据
						String line = "";
						while((line=br.readLine())!=null)
						{
							sb.append(line+"
"); //收集读取到的数据
						}
						//获得Message对象
						Message msg = Message.obtain();
						msg.obj = sb;
						msg.what = 1;
						hd.sendMessage(msg);

				} catch (Exception e)
				{
					// TODO Auto-generated catch block
					e.printStackTrace();
				}
			}
			

		}.start();
		

 2、POST请求：

new Thread()
		{
			public void run()
			{
				try
				{
					// 1.获取URL对象
					URL url = new URL("http://wwwtest.rupeng.cn:8888/QueryAvatarInfo.ashx");
					// 2.获取HttpURLConnection 对象
					HttpURLConnection huc = (HttpURLConnection) url.openConnection();
					//3.设置 读入与写出
					huc.setDoInput(true); 
					huc.setDoOutput(true);
					//4.设置 请求模式
					huc.setRequestMethod("POST");
					//5.获取写入流
					OutputStream os = huc.getOutputStream();
					os.write(("action=GetAllNames").getBytes());
					os.flush();
					// 6.链接
					huc.connect();
					//7.读取返回数据
					InputStream is = huc.getInputStream();
					BufferedReader br = new BufferedReader(new InputStreamReader(is));
					StringBuilder sb = new StringBuilder();
					String line="";
					while((line=br.readLine())!=null)
					{
						sb.append(line+"
");						
					}
					
					Message msg = Message.obtain();
					msg.obj = sb;
					msg.what = 1;
					// 发送数据
					hd.sendMessage(msg);
					
					// 关闭资源
					is.close();
					br.close();
					os.close();
				
				} catch (Exception e)
				{
					// TODO Auto-generated catch block
					e.printStackTrace();
				}
				
			};
			
		}.start();
				

使用HttpClient 进行通信

GET

new Thread()
		{
			// 耗时操作
			public void run()
			{
				//1、创建HttpClient对象  
				HttpClient hc = new DefaultHttpClient();
				//2.设置请求模式
				HttpGet hg = new HttpGet("http://www.baidu.com/");

				try
				{
					//3.客户端执行 GET请求 获得应答对象
					HttpResponse hr = hc.execute(hg);
					//4.通过应答对象获得 实体数据对象
					HttpEntity he = hr.getEntity();
					//5.通过EntityUtils工具类解析数据
					String data = EntityUtils.toString(he,"UTF-8");

					// 通过Handler发送数据
					Message msg = Message.obtain();
					msg.obj = data;
					msg.what = 1;					
					hd.sendMessage(msg);


				} catch (ClientProtocolException e)
				{
					// TODO Auto-generated catch block
					e.printStackTrace();
				} catch (Exception e)
				{
					// TODO Auto-generated catch block
					e.printStackTrace();
				}

			}

		}.start();