我想用Errai框架制作一个GWT应用程序，但是我遇到了数据绑定和验证方面的一些问题。
我的pom.xml
<dependency>
<groupId>org.jboss.errai</groupId>
<artifactId>errai-validation</artifactId>
<version>${errai.version}</version>
</dependency>
<dependency>
<groupId>javax.validation</groupId>
<artifactId>validation-api</artifactId>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>javax.validation</groupId>
<artifactId>validation-api</artifactId>
<classifier>sources</classifier>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-validator</artifactId>
<version>4.2.0.Final</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-validator</artifactId>
<version>4.2.0.Final</version>
<scope>provided</scope>
<classifier>sources</classifier>
</dependency>
我的app.gwt.xml包含Errai-Validation和HibernateValidator模块：
<inherits name="org.jboss.errai.validation.Validation" />
<inherits name="org.hibernate.validator.HibernateValidator" />
没有未解决的依赖关系我已经仔细检查过这个。
当我尝试使用mvn gwt运行应用程序时：运行我收到以下错误：
java.util.concurrent.ExecutionException: org.jboss.errai.ioc.rebind.ioc.exception.UnsatisfiedDependenciesException: @> org.jboss.errai.ui.nav.client.local.Navigation
- field org.jboss.errai.codegen.meta.MetaField:org.jboss.errai.ui.nav.client.local.Navigation.stateChangeEvent could not be satisfied for type: org.jboss.errai.ioc.client.lifecycle.api.StateChange
Message: can't resolve bean: org.jboss.errai.ioc.client.lifecycle.api.StateChange<java.lang.Object> ( @Default )
at java.util.concurrent.FutureTask.report(FutureTask.java:122)
at java.util.concurrent.FutureTask.get(FutureTask.java:188)
at org.jboss.errai.config.rebind.AsyncGenerators$FutureWrapper.get(AsyncGenerators.java:112)
at org.jboss.errai.config.rebind.AsyncGenerators$FutureWrapper.get(AsyncGenerators.java:86)
at org.jboss.errai.config.rebind.AbstractAsyncGenerator.startAsyncGeneratorsAndWaitFor(AbstractAsyncGenerator.java:100)
at org.jboss.errai.ioc.rebind.ioc.bootstrapper.IOCGenerator.generate(IOCGenerator.java:58)
at com.google.gwt.core.ext.IncrementalGenerator.generateNonIncrementally(IncrementalGenerator.java:40)
at com.google.gwt.dev.javac.StandardGeneratorContext.runGeneratorIncrementally(StandardGeneratorContext.java:657)
at com.google.gwt.dev.cfg.RuleGenerateWith.realize(RuleGenerateWith.java:41)
at com.google.gwt.dev.shell.StandardRebindOracle$Rebinder.rebind(StandardRebindOracle.java:79)
at com.google.gwt.dev.shell.StandardRebindOracle.rebind(StandardRebindOracle.java:276)
at com.google.gwt.dev.shell.ShellModuleSpaceHost.rebind(ShellModuleSpaceHost.java:141)
at com.google.gwt.dev.shell.ModuleSpace.rebind(ModuleSpace.java:595)
at com.google.gwt.dev.shell.ModuleSpace.rebindAndCreate(ModuleSpace.java:465)
at com.google.gwt.dev.shell.GWTBridgeImpl.create(GWTBridgeImpl.java:49)
at com.google.gwt.core.shared.GWT.create(GWT.java:57)
at com.google.gwt.core.client.GWT.create(GWT.java:85)
at org.jboss.errai.ioc.client.Container.bootstrapContainer(Container.java:64)
at org.jboss.errai.ioc.client.Container.onModuleLoad(Container.java:41)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at com.google.gwt.dev.shell.ModuleSpace.onLoad(ModuleSpace.java:406)
at com.google.gwt.dev.shell.OophmSessionHandler.loadModule(OophmSessionHandler.java:200)
at com.google.gwt.dev.shell.BrowserChannelServer.processConnection(BrowserChannelServer.java:526)
at com.google.gwt.dev.shell.BrowserChannelServer.run(BrowserChannelServer.java:364)
at java.lang.Thread.run(Thread.java:744)
这就是为什么Bootstrap失败并且应用程序抛出onModuleLoad异常并且没有启动。
如果我删除了2个验证模块，我可以毫无错误地启动应用程序。
我正在使用版本3.0.1 FINAL的Errai教程。
感谢您的帮助：）
编辑：
我通过添加
解决了错误<inherits name="org.jboss.errai.ui.nav.Navigation" />
到我的app.gwt.xml但现在我遇到了这个例外的下一个问题：
java.lang.RuntimeException: Deferred binding failed for 'org.jboss.errai.validation.client.ValidatorFactoryImpl$GwtValidator' (did you forget to inherit a required module?)
at com.google.gwt.dev.shell.GWTBridgeImpl.create(GWTBridgeImpl.java:53)
at com.google.gwt.core.shared.GWT.create(GWT.java:57)
at com.google.gwt.core.client.GWT.create(GWT.java:85)
at org.jboss.errai.validation.client.ValidatorFactoryImpl.createValidator(ValidatorFactoryImpl.java:11)
at com.google.gwt.validation.client.AbstractGwtValidatorFactory.getValidator(AbstractGwtValidatorFactory.java:90)
at org.jboss.errai.validation.client.ValidatorProvider.get(ValidatorProvider.java:37)
at org.jboss.errai.ioc.client.BootstrapperImpl$28.getInstance(BootstrapperImpl.java:432)
at org.jboss.errai.ioc.client.BootstrapperImpl$28.getInstance(BootstrapperImpl.java:1)
at org.jboss.errai.ioc.client.container.IOCDependentBean.getInstance(IOCDependentBean.java:96)
at org.jboss.errai.ioc.client.container.IOCDependentBean.getInstance(IOCDependentBean.java:87)
at org.jboss.errai.ioc.client.container.SyncToAsyncBeanManagerAdapter$1.getInstance(SyncToAsyncBeanManagerAdapter.java:148)
at org.jboss.errai.ui.nav.client.local.spi.GeneratedNavigationGraph$2.produceContent(GeneratedNavigationGraph.java:69)
at org.jboss.errai.ui.nav.client.local.Navigation.maybeShowPage(Navigation.java:304)
at org.jboss.errai.ui.nav.client.local.Navigation.navigate(Navigation.java:249)
at org.jboss.errai.ui.nav.client.local.Navigation.navigate(Navigation.java:230)
at org.jboss.errai.ui.nav.client.local.Navigation.navigate(Navigation.java:225)
at org.jboss.errai.ui.nav.client.local.Navigation.goTo(Navigation.java:191)
at org.jboss.errai.ui.nav.client.local.DefaultNavigationErrorHandler.handleError(DefaultNavigationErrorHandler.java:27)
at org.jboss.errai.ui.nav.client.local.Navigation.goTo(Navigation.java:193)
是否有其他模块缺失？
我是否纠正了Errai正在创建ValidationFactory并注入正确的实例？所以我不必像这里一样创建我自己的ValidationFactory：
答案 0 :(得分：2)
是的，这是对的。您不必创建自己的ValidationFactory。 Errai会为你做这件事。你可以简单地@Inject一个Validator。
我准备了一个使用3.0.1.Final的Errai教程版本，它正好显示了该版本（遵循reference guide的说明）。我已将该项目置于GitHub。
您粘贴的最后一个错误并不包含足够的信息来调查为什么会失败。但是，您应该在devmode控制台中看到更多错误信息。