Question

我查看了Google IO gwtgae2011中的示例并让它正常运行。我试图为项目添加一些功能，并不断从服务器获取异常（调用onFailure方法），堆栈跟踪是

19:47:36.070 [ERROR] [crowd] Uncaught exception escaped
com.google.web.bindery.event.shared.UmbrellaException: One or more exceptions caught, see full set in UmbrellaException#getCauses
at com.google.web.bindery.requestfactory.shared.impl.AbstractRequestContext$StandardPayloadDialect.processPayload(AbstractRequestContext.java:299)
at com.google.web.bindery.requestfactory.shared.impl.AbstractRequestContext$4.onTransportSuccess(AbstractRequestContext.java:951)
at com.google.web.bindery.requestfactory.gwt.client.DefaultRequestTransport$1.onResponseReceived(DefaultRequestTransport.java:136)
at com.google.gwt.http.client.Request.fireOnResponseReceived(Request.java:287)
at com.google.gwt.http.client.RequestBuilder$1.onReadyStateChange(RequestBuilder.java:395)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
......stacktrace

Caused by: java.lang.RuntimeException: Server Error: No class 'com.trial.gwtgae.server.domain.Sketch2' was registered
at com.google.web.bindery.requestfactory.shared.Receiver.onFailure(Receiver.java:36)
at com.google.web.bindery.requestfactory.shared.impl.AbstractRequest.onFail(AbstractRequest.java:113)
at com.google.web.bindery.requestfactory.shared.impl.AbstractRequestContext$StandardPayloadDialect.processPayload(AbstractRequestContext.java:271)
at com.google.web.bindery.requestfactory.shared.impl.AbstractRequestContext$4.onTransportSuccess(AbstractRequestContext.java:951)
at com.google.web.bindery.requestfactory.gwt.client.DefaultRequestTransport$1.onResponseReceived(DefaultRequestTransport.java:136)
at com.google.gwt.http.client.Request.fireOnResponseReceived(Request.java:287)
at com.google.gwt.http.client.RequestBuilder$1.onReadyStateChange(RequestBuilder.java:395)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at com.google.gwt.dev.shell.MethodAdaptor.invoke(MethodAdaptor.java:103)
...more stacktrace

我创建了一个名为Sketch2的Sketch类的精确克隆，并在我的RequestFactory接口中创建了SketchDao，SketchProxy和SqetchRequest的克隆。

无论如何都会抛出异常。（我试图重新编译，重启，清理生成的文件，尝试使用IDEA - 同样的问题）任何想法为什么会发生这种情况？

Answer 1

您必须注册要与objectify一起使用的类。像这样：

factory.register(com.trial.gwtgae.server.domain.Sketch2.class);

使用RequestFactory和Objectify时的一个奇怪的例外

1 个答案: