我看了一下Google IO gwtgae2011的例子,并让它工作。我尝试一些功能添加到项目中,并不断地从服务器获取异常(被调用onFailure处法)和堆栈跟踪是使用RequestFactory和Objectify时出现了一个奇怪的例外
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
我创建了一个叫做草图类素描的精确克隆,创造SketchDao,SketchProxy的克隆, SqetchRequest在我的RequestFactory接口中。
无论如何抛出异常。 (我试图重新编译,重新启动,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?
尝试查看由异常抛出的行号。当你有一些愚蠢的错误,比如当你尝试向一个很小的网格添加一行时,这个异常经常被抛出。也许你输入了错误的东西? – 2011-05-17 18:14:20
在例外中没有我的代码行。每个克隆与原始的Sketch类都在同一个包中。 – Tala 2011-05-18 07:10:41