我用手机发送消息给电脑,电脑上收到的却是空的消息,为什么发送不了“abc”呢?                 private View.OnClickListener BnSendListen=new View.OnClickListener() {        @Override
                   public void onClick(View v) {
                       EtSend = (EditText) findViewById(R.id.MsgText);
                    // TODO Auto-generated method stub
                    Socket s=null;
                    DataOutputStream dout=null;
                    DataInputStream  din =null;                     try 
                    {
                     s    =new Socket("192.168.8.229",191);
                     dout =new DataOutputStream(s.getOutputStream());
                     din  =new DataInputStream (s.getInputStream());
                            s.setKeepAlive(true);
                           
                     Thread.sleep(50, 0);                             
                     dout.writeBytes("abc");
                     dout.flush();                                                          
                    }
                    catch(Exception e)
                    {
                     e.printStackTrace();
                    }
                    finally
                    {
                     try{
                      if(dout != null){
                       dout.close();
                      }
                      if(din != null){
                       din.close();
                      }
                      if(s != null){
                       s.close();
                      }     
                     }
                     catch(Exception e){
                      e.printStackTrace();
                     }
                    }
                   }
                  };    
                 }