1. 使用Http的Get方式讀取網路資料 
  URL url = new URL("");
  URLConnection connection = url.openConnection();
  InputStream is = connection.getInputStream();
  InputStreamReader isr = new InputStreamReader(is,"UTF-8");
  BufferedReader br = new BufferedReader(isr);
  String line = null;
  StringBuilder builder = new StringBuilder();
  while((line=br.readLine())!=null){
builder.append(line);
  }
  br.close();
  isr.close();
  is.close();
  System.out.println(builder.toString)
2. 使用Http的Post方式與網路互動通訊
  URL url = new URL("url");
  HttpURLConnection connection = (HttpURLConnection) url.openConnection();
  connection.addRequestProperty("encoding","UTF-8");
  connection.setDoInput(true);
  connection.setDoOutput(true);
  connection.setRequestMethod("POST");
   
  OutputStream os = connection.getOutputStream();
  OutputStreamWriter osw = new OutputStreamWriter(os);
  BufferedWriter bw = new BufferedWriter(osw);
  
  bw.write("引數");
  bw.flush();
  
  
  InputStream is = connection.getInputStream();
  InputStreamReader isr = new InputStreamReader(is);
  BufferedReader br = new BufferedReader(isr);
  
  String line =null;
  StringBuilder builder =new StringBuilder();
  while((line = br.readLine())!=null){
builder.append(line);
  }
  bw.close();
  osw.close();
  os.close();
  br.close();
  isr.close();
  is.close();
  
 System.out.println(builder.toString());