Question

我正在使用Tomcat 7，Richfaces 4.2.2，MyFaces 2.1.5和Facelets。当我启动Tomcat时，我收到错误：

An error occured while initializing MyFaces: duplicate key: class javax.faces.convert.BooleanConverter

java.lang.IllegalArgumentException: duplicate key: class javax.faces.convert.BooleanConverter
at com.google.common.base.Preconditions.checkArgument(Preconditions.java:115)
at com.google.common.collect.RegularImmutableMap.<init>(RegularImmutableMap.java:72) 
at com.google.common.collect.ImmutableMap$Builder.fromEntryList(ImmutableMap.java:221)
at com.google.common.collect.ImmutableMap$Builder.build(ImmutableMap.java:207)
at org.richfaces.javascript.ClientServiceConfigParser.parseConfig(ClientServiceConfigParser.java:53)
at org.richfaces.application.ValidatorModule.createClientScriptService(ValidatorModule.java:65)
at org.richfaces.application.ValidatorModule.configure(ValidatorModule.java:60)
at org.richfaces.application.ServicesFactoryImpl.init(ServicesFactoryImpl.java:27)
at org.richfaces.application.InitializationListener.createFactory(InitializationListener.java:139)
at org.richfaces.application.InitializationListener.onStart(InitializationListener.java:112)
at org.richfaces.application.InitializationListener.processEvent(InitializationListener.java:157)
at javax.faces.event.SystemEvent.processListener(SystemEvent.java:43)
at org.apache.myfaces.application.ApplicationImpl._traverseListenerList(ApplicationImpl.java:2105)
at org.apache.myfaces.application.ApplicationImpl.access$000(ApplicationImpl.java:118)
at org.apache.myfaces.application.ApplicationImpl$SystemListenerEntry.publish(ApplicationImpl.java:2292)
at org.apache.myfaces.application.ApplicationImpl.publishEvent(ApplicationImpl.java:537)
at org.apache.myfaces.webapp.AbstractFacesInitializer._dispatchApplicationEvent(AbstractFacesInitializer.java:248)
at org.apache.myfaces.webapp.AbstractFacesInitializer.initFaces(AbstractFacesInitializer.java:140)
at org.apache.myfaces.webapp.StartupServletContextListener.contextInitialized(StartupServletContextListener.java:111)
at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4765)
at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5260)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:866)
at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:842)
at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:615)
at org.apache.catalina.startup.HostConfig.deployWAR(HostConfig.java:958)
at org.apache.catalina.startup.HostConfig$DeployWar.run(HostConfig.java:1599)
at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source)
at java.util.concurrent.FutureTask$Sync.innerRun(Unknown Source)
at java.util.concurrent.FutureTask.run(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)

我在this post中看到了解决方案，但在这种情况下不同，我的类路径中没有“-source.jar”。

还有什么可能是错的？

Answer 1

我和你一样的船。

从您链接的帖子中取消，我检查了WEB-INF / lib中的所有JAR文件，发现richfaces-components-ui-4.2.2.Final.jar和richfaces-ui-validator-ui-4.2.2.Final.jar都包含文件META-INF/csv.xml它提供了违规类的映射（在我的例子中为IntegerConverter）。

我声明了以下Maven依赖项（前面列出了RichFaces 4.2.2Final BOM）：

<dependency>
    <groupId>org.richfaces.ui</groupId>
    <artifactId>richfaces-components-ui</artifactId>
</dependency>
<dependency>
    <groupId>org.richfaces.core</groupId>
    <artifactId>richfaces-core-impl</artifactId>
</dependency>
<dependency>
    <groupId>org.richfaces.ui.validator</groupId>
    <artifactId>richfaces-ui-validator-ui</artifactId>
</dependency>

但是，richfaces-components-ui是richfaces-ui-validator-ui的超集（即包含它和其他一些）。

您的配置/ RichFaces组件可能有所不同，但答案在于您的WEB-INF/lib目录中的内容（无论是从Maven还是其他方式）......您可能包含多个JAR使用csv.xml文件。

识别一组最小的依赖项，错误就会消失。

IllegalArgumentException：重复键（JSF）

1 个答案: