Kryonet連接成功但沒有收到消息

Question

嗨我正在使用Kryonet作爲我正在開發的遊戲的網絡庫。

我有了這個代碼在服務器端：

public class MyServer { 
    Kryo kryo; 
    Server server; 
    Connection connection; 
    public MyServer(){ 
     server = new Server(); 
     server.start(); 
     try { 
      server.bind(59990, 59900); 
     } catch (IOException e) { 
      System.out.println("FATAL ERROR"); 
     } 

     kryo = server.getKryo(); 
     kryo.register(Message.class); 

     server.addListener(new Listener() { 
      public void received (Connection con, Message str) { 
       System.out.println("Message recieved from client to server"); 
       Message m = (Message)str; 
       System.out.println(m.text); 

      } 
      public void connected(Connection con){ 
       System.out.println("Hey, we are connected!"); 
       connection = con; 
       con.sendTCP("HOLA CLIENTE!!"); 
      } 
      public void disconnected(Connection con){ 
       System.out.println(":(He is gone... he'll never come back.."); 
      } 
     }); 

    } 

    public void sendMessage(String tipoMensaje,String tipoTropa,String id){ 
     connection.sendTCP(tipoMensaje+"-"+tipoTropa+"-"+id); 
    } 

} 

這在客戶端：

public class MyClient { 
    Client client; 
    Connection connection; 
    Kryo kryo; 
    public MyClient(){ 
     client = new Client(); 
     client.start(); 


     try { 
      kryo = client.getKryo(); 
      kryo.register(Message.class); 

      client.connect(5000, "10.211.55.3", 59990, 59900); 
      //sendMessage("fromclient","ee","ee"); 

      client.addListener(new Listener() { 
       public void received (Connection con, String str) { 
         System.out.println(str); 

         System.out.println("Message recieved from server to client"); 
       } 
       public void connected(Connection con){ 
        System.out.println("Hey, we are connected!"); 
        connection = con; 
        Message m = new Message(); 
        m.text="eeep"; 
        client.sendTCP(m); 
       } 
       public void disconnected(Connection con){ 
        System.out.println(":(He is gone... he'll never come back.."); 
       } 
      }); 


     } catch (IOException e) { 
      System.out.println("Error while connecting"); 
     } 


    } 


    public void sendMessage(String tipoMensaje,String tipoTropa,String id){ 
     client.sendTCP(tipoMensaje+"-"+tipoTropa+"-"+id); 
     System.out.println("Message sent from client to server"); 

    } 
} 

消息只是在一個字符串類。當我嘗試將客戶端連接到服務器時，我收到「嗨，我們已連接！」消息，然後在服務器的命令行中輸入「從客戶端接收到服務器的消息」。但是，m.text（消息的內容）未打印，我不知道爲什麼。

在此先感謝。

Answer 1

這是因爲Listener中沒有方法public void received (Connection con, String str) - 基本上，您的服務器從不會調用它。這也是你應該使用@Override的原因 - 首先你不會有這個問題。

將String str替換爲Object o。然後 - 檢查你的物體是否實際上是Message。如果是，將它投射到Message並打印出文字。你的方法應該是這樣的：

@Override 
public void received(Connection connection, Object packet) { 
    if (packet instanceof Message) { 
     System.out.println(((Message) packet).text); 
    } 
}