BufferReader与BufferWriter实现socket通信注意事项

   BufferedReader   bufReader = new BufferedReader(new InputStreamReader(socket.getInputStream()));  
    //用于发送返回信息,可以不需要装饰这么多io流使用缓冲流时发送数据要注意调用.flush()方法  
 BufferedWriter  bufWriter = new BufferedWriter(new OutputStreamWriter(socket.getOutputStream()));
    int nMsgLen = 0;
    String sMsgBody="";
    String str = StringUtils.strip(bufReader.readLine());  
  

（java.net.SocketException: Socket closed）
       System.out.println("Client Socket Message:"+str);  
       bufWriter.write("Message Received"+str);  
       bufWriter.flush();   
       bufWriter.close();  
        socket.close();
  
       socket=null;