学习笔记之网络访问基础

/**
	 * 点击按钮<pre name="code" class="java">public void getbyuc(View v){
		new Thread(){
			public void run() {
				try {
					URL url = new URL("http://172.60.50.82:8080/ems/getCode.do");
					HttpURLConnection connection = (HttpURLConnection) url.openConnection();
					connection.setRequestMethod("GET");//设定访问方式
					connection.setDoInput(true);//可以接收服务器给我返回内容
					connection.connect();//建立连接
					InputStream is = connection.getInputStream();
					Bitmap bitmap = BitmapFactory.decodeStream(is);
					is.close();
					Message.obtain(handler, 101, bitmap).sendToTarget();
				} catch (Exception e) {
					e.printStackTrace();
				}
				
			};
		}.start();
	}

* 利用HttpClient以GET方式获取服务器上的图片 * * @param v */public void getbyhc(View v){//1)所有网络访问代码都要写在工作线程中new Thread(){public void run() {try {//2)创建HttpClient对象HttpClient client = new DefaultHttpClient();//3)声明网络访问的方式GET//HttpGet get = new HttpGet("http://172.60.50.82:8080/ems/getCode.do");HttpGet get = new HttpGet("http://172.60.50.82:8080/ems/login.html");//4)发起网络访问//5)获得服务器响应HttpResponse resp = client.execute(get);//6)解析服务器返回的具体内容HttpEntity entity = resp.getEntity();InputStream is = entity.getContent();//Bitmap bitmap = BitmapFactory.decodeStream(is);BufferedReader br = new BufferedReader(new InputStreamReader(is));String line = null;StringBuilder sb = new StringBuilder();while((line=br.readLine())!=null){sb.append(line);}//is.close();br.close();//7)通过Message将结果从工作线程提交到主线程//Message.obtain(handler,101,bitmap).sendToTarget();Message.obtain(handler,102,sb.toString()).sendToTarget();} catch (Exception e) {e.printStackTrace();}};}.start();}