SerializationException而脫鹽com.google.appengine.api.datastore.Key GWT

Question

我有一個RPC呼叫：

@Override 
public void onSuccess(Void result) { 
     Window.alert("SuccessElse"); 
      userService.getUser("103419018118650635943", new AsyncCallback<User>() { 

       @Override 
       public void onFailure(Throwable e) { 
        Window.alert("FailAgain"); 

        e.printStackTrace(); 
       } 

       @Override 
       public void onSuccess(User result) { 
        Window.alert(user.getEmail()); 

       } 
      }); 

    } 

User是：

@Entity 
public class User implements IsSerializable { 

@Id 
@Column(name="id") 
@GeneratedValue(strategy = GenerationType.IDENTITY) 
private Key id; 

private String googleID; 

private String firstName; 

private String lastName; 

private String password; 

private String gender; 

private String email; 


@OneToOne(cascade={CascadeType.ALL}) 
@JoinColumn(name="key") 

private AuthenticationToken token=new AuthenticationToken(); 

private String pictureStringURL; 

private String googlePlusProfileURL; 

private String defaultLanguage; 

// Lots of Sets and Gets } 

方法調用getUser(String googleID)：

public User getUser(String googleId){ 
    EntityManager em = emfInstance.createEntityManager(); 
    Query q = em 
      .createQuery("select u from User u where u.googleID=:googleId"); 
    q.setParameter("googleId", googleId); 

    return (User) q.getResultList().get(0); 
} 

然後我發現我的自我面臨這個Exception在密鑰不能deserializ編輯在客戶端

com.google.gwt.user.client.rpc.IncompatibleRemoteServiceException: The response could not be deserialized 
    at com.google.gwt.user.client.rpc.impl.RequestCallbackAdapter.onResponseReceived(RequestCallbackAdapter.java:221) 
    at com.google.gwt.http.client.Request.fireOnResponseReceived(Request.java:258) 
    at com.google.gwt.http.client.RequestBuilder$1.onReadyStateChange(RequestBuilder.java:412) 
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) 
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) 
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) 
    at java.lang.reflect.Method.invoke(Method.java:597) 
    at com.google.gwt.dev.shell.MethodAdaptor.invoke(MethodAdaptor.java:103) 
    at com.google.gwt.dev.shell.MethodDispatch.invoke(MethodDispatch.java:71) 
    at com.google.gwt.dev.shell.OophmSessionHandler.invoke(OophmSessionHandler.java:172) 
    at com.google.gwt.dev.shell.BrowserChannelServer.reactToMessagesWhileWaitingForReturn(BrowserChannelServer.java:338) 
    at com.google.gwt.dev.shell.BrowserChannelServer.invokeJavascript(BrowserChannelServer.java:219) 
    at com.google.gwt.dev.shell.ModuleSpaceOOPHM.doInvoke(ModuleSpaceOOPHM.java:136) 
    at com.google.gwt.dev.shell.ModuleSpace.invokeNative(ModuleSpace.java:571) 
    at com.google.gwt.dev.shell.ModuleSpace.invokeNativeObject(ModuleSpace.java:279) 
    at com.google.gwt.dev.shell.JavaScriptHost.invokeNativeObject(JavaScriptHost.java:91) 
    at com.google.gwt.core.client.impl.Impl.apply(Impl.java) 
    at com.google.gwt.core.client.impl.Impl.entry0(Impl.java:242) 
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) 
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) 
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) 
    at java.lang.reflect.Method.invoke(Method.java:597) 
    at com.google.gwt.dev.shell.MethodAdaptor.invoke(MethodAdaptor.java:103) 
    at com.google.gwt.dev.shell.MethodDispatch.invoke(MethodDispatch.java:71) 
    at com.google.gwt.dev.shell.OophmSessionHandler.invoke(OophmSessionHandler.java:172) 
    at com.google.gwt.dev.shell.BrowserChannelServer.reactToMessages(BrowserChannelServer.java:293) 
    at com.google.gwt.dev.shell.BrowserChannelServer.processConnection(BrowserChannelServer.java:547) 
    at com.google.gwt.dev.shell.BrowserChannelServer.run(BrowserChannelServer.java:364) 
    at java.lang.Thread.run(Thread.java:662) 
Caused by: com.google.gwt.user.client.rpc.SerializationException: com.google.appengine.api.datastore.Key/194261103 
    at com.google.gwt.user.client.rpc.impl.SerializerBase.getTypeHandler(SerializerBase.java:153) 
    at com.google.gwt.user.client.rpc.impl.SerializerBase.instantiate(SerializerBase.java:114) 
    at com.google.gwt.user.client.rpc.impl.ClientSerializationStreamReader.deserialize(ClientSerializationStreamReader.java:396) 
    at com.google.gwt.user.client.rpc.impl.AbstractSerializationStreamReader.readObject(AbstractSerializationStreamReader.java:119) 
    at com.cbd.shared.entities.User_FieldSerializer.deserialize(User_FieldSerializer.java:117) 
    at com.cbd.shared.entities.User_FieldSerializer.deserial(User_FieldSerializer.java:150) 
    at com.google.gwt.user.client.rpc.impl.SerializerBase.deserialize(SerializerBase.java:95) 
    at com.google.gwt.user.client.rpc.impl.ClientSerializationStreamReader.deserialize(ClientSerializationStreamReader.java:398) 
    at com.google.gwt.user.client.rpc.impl.AbstractSerializationStreamReader.readObject(AbstractSerializationStreamReader.java:119) 
    at com.google.gwt.user.client.rpc.impl.RequestCallbackAdapter$ResponseReader$8.read(RequestCallbackAdapter.java:106) 
    at com.google.gwt.user.client.rpc.impl.RequestCallbackAdapter.onResponseReceived(RequestCallbackAdapter.java:214) 
    ... 28 more 

任何幫助，感謝提前:)

Answer 1

嘗試使用custom GWT serialization您User類。

更新：

您可以嘗試字符串編碼Key：GWT with JDO problem