简单的GWT RequestFactory崩溃(Simple GWT RequestFactory crashes)

使用此http://code.google.com/webtoolkit/doc/latest/DevGuideRequestFactory.html教程来了解基本概念，但在从Eclipse运行我的应用时遇到问题：

15:48:04.384 [ERROR] [Main] 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.fail(AbstractRequestContext.java:727) at com.google.web.bindery.requestfactory.shared.impl.AbstractRequestContext$5.onTransportFailure(AbstractRequestContext.java:1104) at com.google.web.bindery.requestfactory.gwt.client.DefaultRequestTransport$1.onResponseReceived(DefaultRequestTransport.java:140) 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) 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:337) at com.google.gwt.dev.shell.BrowserChannelServer.invokeJavascript(BrowserChannelServer.java:218) at com.google.gwt.dev.shell.ModuleSpaceOOPHM.doInvoke(ModuleSpaceOOPHM.java:136) at com.google.gwt.dev.shell.ModuleSpace.invokeNative(ModuleSpace.java:561) at com.google.gwt.dev.shell.ModuleSpace.invokeNativeObject(ModuleSpace.java:269) 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:213) 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) 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:292) at com.google.gwt.dev.shell.BrowserChannelServer.processConnection(BrowserChannelServer.java:546) at com.google.gwt.dev.shell.BrowserChannelServer.run(BrowserChannelServer.java:363) at java.lang.Thread.run(Unknown Source) Caused by: java.lang.RuntimeException: Server Error 500 <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"/> <title>Error 500 INTERNAL_SERVER_ERROR</title> </head> <body><h2>HTTP ERROR: 500</h2><pre>INTERNAL_SERVER_ERROR</pre> RequestURI=/gwtRequest<a href="http://jetty.mortbay.org/">Powered by Jetty://</a> </body> </html> at com.google.web.bindery.requestfactory.shared.Receiver.onFailure(Receiver.java:44) at com.google.web.bindery.requestfactory.shared.impl.AbstractRequest.onFail(AbstractRequest.java:118) at com.google.web.bindery.requestfactory.shared.impl.AbstractRequestContext.fail(AbstractRequestContext.java:707) at com.google.web.bindery.requestfactory.shared.impl.AbstractRequestContext$5.onTransportFailure(AbstractRequestContext.java:1104) at com.google.web.bindery.requestfactory.gwt.client.DefaultRequestTransport$1.onResponseReceived(DefaultRequestTransport.java:140) 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) 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:337) at com.google.gwt.dev.shell.BrowserChannelServer.invokeJavascript(BrowserChannelServer.java:218) at com.google.gwt.dev.shell.ModuleSpaceOOPHM.doInvoke(ModuleSpaceOOPHM.java:136) at com.google.gwt.dev.shell.ModuleSpace.invokeNative(ModuleSpace.java:561) at com.google.gwt.dev.shell.ModuleSpace.invokeNativeObject(ModuleSpace.java:269) 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:213) 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) 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:292) at com.google.gwt.dev.shell.BrowserChannelServer.processConnection(BrowserChannelServer.java:546) at com.google.gwt.dev.shell.BrowserChannelServer.run(BrowserChannelServer.java:363) at java.lang.Thread.run(Unknown Source)

这是失败的代码：

final EventBus eventBus = new SimpleEventBus(); final TestEntityRequestFactory requestFactory = GWT.create(TestEntityRequestFactory.class); requestFactory.initialize(eventBus); final Button button = new Button("omg"); RootPanel.get().add(button); TestEntityRequest testEntityRequest = requestFactory.testEntityRequest(); Request<String> createReq = testEntityRequest.getOmg(); createReq.fire(new Receiver<String>() { @Override public void onSuccess(String arg0) { button.setText(arg0); } });

我知道我的问题很抽象，请使用评论来询问所需的详细信息。

Used this http://code.google.com/webtoolkit/doc/latest/DevGuideRequestFactory.html tutorial to understand the basic concepts, but having problems running my app from Eclipse:

15:48:04.384 [ERROR] [Main] 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.fail(AbstractRequestContext.java:727) at com.google.web.bindery.requestfactory.shared.impl.AbstractRequestContext$5.onTransportFailure(AbstractRequestContext.java:1104) at com.google.web.bindery.requestfactory.gwt.client.DefaultRequestTransport$1.onResponseReceived(DefaultRequestTransport.java:140) 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) 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:337) at com.google.gwt.dev.shell.BrowserChannelServer.invokeJavascript(BrowserChannelServer.java:218) at com.google.gwt.dev.shell.ModuleSpaceOOPHM.doInvoke(ModuleSpaceOOPHM.java:136) at com.google.gwt.dev.shell.ModuleSpace.invokeNative(ModuleSpace.java:561) at com.google.gwt.dev.shell.ModuleSpace.invokeNativeObject(ModuleSpace.java:269) 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:213) 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) 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:292) at com.google.gwt.dev.shell.BrowserChannelServer.processConnection(BrowserChannelServer.java:546) at com.google.gwt.dev.shell.BrowserChannelServer.run(BrowserChannelServer.java:363) at java.lang.Thread.run(Unknown Source) Caused by: java.lang.RuntimeException: Server Error 500 <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"/> <title>Error 500 INTERNAL_SERVER_ERROR</title> </head> <body><h2>HTTP ERROR: 500</h2><pre>INTERNAL_SERVER_ERROR</pre> RequestURI=/gwtRequest<a href="http://jetty.mortbay.org/">Powered by Jetty://</a> </body> </html> at com.google.web.bindery.requestfactory.shared.Receiver.onFailure(Receiver.java:44) at com.google.web.bindery.requestfactory.shared.impl.AbstractRequest.onFail(AbstractRequest.java:118) at com.google.web.bindery.requestfactory.shared.impl.AbstractRequestContext.fail(AbstractRequestContext.java:707) at com.google.web.bindery.requestfactory.shared.impl.AbstractRequestContext$5.onTransportFailure(AbstractRequestContext.java:1104) at com.google.web.bindery.requestfactory.gwt.client.DefaultRequestTransport$1.onResponseReceived(DefaultRequestTransport.java:140) 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) 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:337) at com.google.gwt.dev.shell.BrowserChannelServer.invokeJavascript(BrowserChannelServer.java:218) at com.google.gwt.dev.shell.ModuleSpaceOOPHM.doInvoke(ModuleSpaceOOPHM.java:136) at com.google.gwt.dev.shell.ModuleSpace.invokeNative(ModuleSpace.java:561) at com.google.gwt.dev.shell.ModuleSpace.invokeNativeObject(ModuleSpace.java:269) 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:213) 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) 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:292) at com.google.gwt.dev.shell.BrowserChannelServer.processConnection(BrowserChannelServer.java:546) at com.google.gwt.dev.shell.BrowserChannelServer.run(BrowserChannelServer.java:363) at java.lang.Thread.run(Unknown Source)

Here's the code that fails:

final EventBus eventBus = new SimpleEventBus(); final TestEntityRequestFactory requestFactory = GWT.create(TestEntityRequestFactory.class); requestFactory.initialize(eventBus); final Button button = new Button("omg"); RootPanel.get().add(button); TestEntityRequest testEntityRequest = requestFactory.testEntityRequest(); Request<String> createReq = testEntityRequest.getOmg(); createReq.fire(new Receiver<String>() { @Override public void onSuccess(String arg0) { button.setText(arg0); } });

I know my question is quite abstract, please use comments to ask for required details.

最满意答案

问题是相关的，在GWT 2.4中他们引入了一个特殊的注释处理器，要求你必须在你的请求工厂正常工作之前运行。这是解决方案http://vivagwt.blogspot.com/2011/09/requestfactory-en-gwt-24.html

我不懂西班牙语，但设法理解解决方案:-)

The problems is related that in GWT 2.4 they have introduced a special annotation processor that requestfactory-apt that you have to run before your request factory will work fine. Here's the solution http://vivagwt.blogspot.com/2011/09/requestfactory-en-gwt-24.html

I don't know Spanish but managed to understand the solution :-)

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