如何在客户端服务器通信中使用keyevent

Question

我是java的新手，我必须创建一个客户端服务器通信，在输入时传输消息。我尝试过使用各种关键事件，但它似乎只是通过keyrelease事件传输。使用Thread.sleep（3000）是因为我需要将消息延迟3秒。

当我在jTextArea2中输入一个单词时，只有第一个字母出现在客户页面的jTextArea2中

服务器代码

 static ServerSocket ss;
 static Socket s;
 static DataInputStream din;
  static DataOutputStream dout;
 KeyListener key = new KeyListener(){
     public void keyPressed(KeyEvent keyEvent){



     }
     public void keyReleased(KeyEvent keyEvent){
           String msgout ="";
         try{  
     Thread.sleep(3000);
    msgout = jTextArea2.getText().trim();
    dout.writeUTF(msgout);
  }catch(Exception e){
     System.err.println("Exception:" + e.getMessage());  
  }
     }

     public void keyTyped(KeyEvent keyEvent){

     }
 };


     String msgin = "";
    try{
     ss = new ServerSocket(1201);
     s = ss.accept();
     din = new DataInputStream(s.getInputStream()); 
     dout = new DataOutputStream(s.getOutputStream());

     while (!msgin.equals("exit")){
      msgin = din.readUTF();

      jTextArea1.setText(jTextArea1.getText().trim() + msgin);
     }
    }catch(Exception e){
      System.err.println("Exception:" + e.getMessage());   
    }

 }  

}

当我在jTextArea2中输入内容时，服务器页面中的jTextArea2中没有任何内容出现

客户端代码

  static Socket s;
 static DataInputStream din;
  static DataOutputStream dout;
  KeyListener key = new KeyListener(){
     public void keyPressed(KeyEvent keyEvent){

     }
     public void keyReleased(KeyEvent keyEvent){
              String msgout ="";
         try{  
     Thread.sleep(3000);
    msgout = jTextArea2.getText().trim();
    dout.writeUTF(msgout);
  }catch(Exception e){
     System.err.println("Exception:" + e.getMessage());  
  }  
     }
     public void keyTyped(KeyEvent keyEvent){

     }
 };
 public static void main(String[] args) {
 java.awt.EventQueue.invokeLater(new Runnable() {
        public void run() {
            new Chatclient().setVisible(true);
        }
    });
 String msgin = "";
 try{

      s = new Socket("127.0.0.1",1201);
      din = new DataInputStream(s.getInputStream());
      dout = new DataOutputStream(s.getOutputStream());


      msgin = din.readUTF();
      jTextArea1.setText(jTextArea1.getText().trim()+ msgin);

 }
 catch (Exception e){
   System.err.println("Exception:" + e.getMessage());  
 }

    }

}