关于socket 实现聊天室时客户端导致readline出现阻塞解决办法

客户端：

	  String val=req.getParameter("text").toString();
		  String id=req.getParameter("id");
		  Socket socket =null; 
		  if(id==null||id.equals("")){
			  socket= new Socket("127.0.0.1",8090);
			  id=socketFactory.getNewId()+"";
			  socketFactory.add(Integer.parseInt(id), socket);
		  }else{
			  socket=socketFactory.get(Integer.parseInt(id));
			
		  }
		  OutputStream os=socket.getOutputStream();
		  //向页面传递
		  PrintWriter write=new PrintWriter(resp.getOutputStream());
		  write.write(id);

		  //向服务端传递
		  PrintWriter swrite=new PrintWriter(os);
		  swrite.println("i am client"+id+":"+val);
 	   	  write.close();
// 		 swrite.close();
// 	     	os.close();
//		  os.flush();
		  swrite.flush();
//		  write.flush();	  String val=req.getParameter("text").t