在反序列化过程中Kryonet错误

Question

我试图创建一个多人游戏使用网络库kryonet，我得到了连接并发送字符串工作，但现在我试图发送对象。我想要做的是发送一个数组列表，但它给了我这个错误。我也尝试发送一个对象，它给了我同样的错误。

Exception in thread "Client" com.esotericsoftware.kryonet.KryoNetException: Error during deserialization. 
    at com.esotericsoftware.kryonet.TcpConnection.readObject(TcpConnection.java:141) 
    at com.esotericsoftware.kryonet.Client.update(Client.java:247) 
    at com.esotericsoftware.kryonet.Client.run(Client.java:333) 
    at java.lang.Thread.run(Thread.java:745) 
Caused by: com.esotericsoftware.kryo.KryoException: Class cannot be created (missing no-arg constructor): com.connorbrezinsky.spaceraiders.objects.Metor 
    at com.esotericsoftware.kryo.Kryo.newInstantiator(Kryo.java:1048) 
    at com.esotericsoftware.kryo.Kryo.newInstance(Kryo.java:1060) 
    at com.esotericsoftware.kryo.serializers.FieldSerializer.create(FieldSerializer.java:228) 
    at com.esotericsoftware.kryo.serializers.FieldSerializer.read(FieldSerializer.java:217) 
    at com.esotericsoftware.kryo.Kryo.readClassAndObject(Kryo.java:735) 
    at com.esotericsoftware.kryo.serializers.CollectionSerializer.read(CollectionSerializer.java:109) 
    at com.esotericsoftware.kryo.serializers.CollectionSerializer.read(CollectionSerializer.java:18) 
    at com.esotericsoftware.kryo.Kryo.readClassAndObject(Kryo.java:735) 
    at com.esotericsoftware.kryonet.KryoSerialization.read(KryoSerialization.java:58) 
    at com.esotericsoftware.kryonet.TcpConnection.readObject(TcpConnection.java:139) 
    ... 3 more 

我试图在梅特类创建具有无参数构造函数，但也没有工作

Exception in thread "Client" com.esotericsoftware.kryonet.KryoNetException: Error during deserialization. 
    at com.esotericsoftware.kryonet.TcpConnection.readObject(TcpConnection.java:141) 
    at com.esotericsoftware.kryonet.Client.update(Client.java:247) 
    at com.esotericsoftware.kryonet.Client.run(Client.java:333) 
    at java.lang.Thread.run(Thread.java:745) 
Caused by: com.esotericsoftware.kryo.KryoException: java.lang.IllegalArgumentException: Can not set org.newdawn.slick.geom.Shape field com.connorbrezinsky.spaceraiders.objects.Object.s to java.lang.Float 
Serialization trace: 
s (com.connorbrezinsky.spaceraiders.objects.Metor) 
metors (com.connorbrezinsky.spaceraiders.main.Response) 
    at com.esotericsoftware.kryo.serializers.FieldSerializer$ObjectField.read(FieldSerializer.java:626) 
    at com.esotericsoftware.kryo.serializers.FieldSerializer.read(FieldSerializer.java:221) 
    at com.esotericsoftware.kryo.Kryo.readClassAndObject(Kryo.java:735) 
    at com.esotericsoftware.kryo.serializers.CollectionSerializer.read(CollectionSerializer.java:109) 
    at com.esotericsoftware.kryo.serializers.CollectionSerializer.read(CollectionSerializer.java:18) 
    at com.esotericsoftware.kryo.Kryo.readObject(Kryo.java:654) 
    at com.esotericsoftware.kryo.serializers.FieldSerializer$ObjectField.read(FieldSerializer.java:605) 
    at com.esotericsoftware.kryo.serializers.FieldSerializer.read(FieldSerializer.java:221) 
    at com.esotericsoftware.kryo.Kryo.readClassAndObject(Kryo.java:735) 
    at com.esotericsoftware.kryonet.KryoSerialization.read(KryoSerialization.java:58) 
    at com.esotericsoftware.kryonet.TcpConnection.readObject(TcpConnection.java:139) 
    ... 3 more 
Caused by: java.lang.IllegalArgumentException: Can not set org.newdawn.slick.geom.Shape field com.connorbrezinsky.spaceraiders.objects.Object.s to java.lang.Float 
    at sun.reflect.UnsafeFieldAccessorImpl.throwSetIllegalArgumentException(UnsafeFieldAccessorImpl.java:167) 
    at sun.reflect.UnsafeFieldAccessorImpl.throwSetIllegalArgumentException(UnsafeFieldAccessorImpl.java:171) 
    at sun.reflect.UnsafeObjectFieldAccessorImpl.set(UnsafeObjectFieldAccessorImpl.java:81) 
    at java.lang.reflect.Field.set(Field.java:764) 
    at com.esotericsoftware.kryo.serializers.FieldSerializer$ObjectField.read(FieldSerializer.java:619) 
    ... 13 more 

继承人的客户端代码

Kryo kryo = client.getKryo(); 
      kryo.register(Request.class); 
      kryo.register(Response.class); 
      kryo.register(java.util.ArrayList.class); 
      kryo.register(Metor.class); 
      client.start(); 
      try { 
       client.connect(10000, "192.168.1.130", 54555); 
      } catch (Exception er) { 
       er.printStackTrace(); 
      } 

      Request request = new Request(); 
      request.text="map_metor"; 
      client.sendTCP(request); 

      client.addListener(new Listener() { 
       public void received(Connection connection, Object object) { 

         Response response = (Response) object; 
         System.out.println(response.metors); 

       } 
      }); 

继承人的服务器代码

public static Server server; 
public static World world; 

public static final int PORT = 54555; 

public static void main(String[] args) throws IOException { 

    System.out.println("Starting server..."); 

    server = new Server(); 
    world = new World(2000,2000); 
    Kryo kryo = server.getKryo(); 
    kryo.register(Request.class); 
    kryo.register(Response.class); 
    kryo.register(java.util.ArrayList.class); 
    kryo.register(Metor.class); 
    server.start(); 
    server.bind(54555); 

    System.out.println("Server started, generating world"); 
    world.setMaxMetors(20); 
    world.setMaxPlanets(10); 
    world.generateObjects(); 



    server.addListener(new Listener() { 
     public void received(Connection connection, Object object) { 
      if (object instanceof Request) { 
       Request request = (Request) object; 
       System.out.println(request.text); 

       if (request.text.equalsIgnoreCase("map_metor")) { 
        Response response = new Response(); 
        response.metors = world.metors; 
        connection.sendTCP(response); 
       }else if(request.text.equalsIgnoreCase("map_planets")) { 
        Response response = new Response(); 
        response.planets = world.planets; 
        connection.sendTCP(response); 
       } 
      } 
     } 
    }); 



} 

很抱歉，这个帖子很长，但这似乎是一个奇怪的问题，除非我完全无视某件事。

编辑： 所以，我得出的结论Kryonet有问题序列化slick2d Image类或者没有与Kryonet & slick2d不同的冲突。

Answer 1

您必须确保您的类中包含与kryonet一起发送的所有变量。