Guice创建错误Magnolia

Question

我正在为我受雇的公司做一个项目。他们使用的是木兰CMS。当我尝试启动Tomcat服务器时，在Eclipse的控制台中得到这个错误。

我一直在寻找解决方案，但我发现它很难。我尝试过重新安装eclipse，tomcat，删除.m2仓库并重建，清理项目，清理tomcat工作目录，在magnolia.properties中注释掉log4j的配置。

我已经用谷歌搜索了错误，但没有找到任何有用的东西。我在一台完全不同的机器上尝试过，我得到了同样的错误，所以这可能与代码有关，而不是环境。然而，我有一些在windows上的同事没有得到这个错误。任何帮助都将不胜感激。

Tomcat 8.5，mac osx 10.13.6 high sierra，java 8更新191 (build 1.8.0_191-b12)，木兰版本不是最新版本(我会找出并更新)。

    Initializing Log4J
Initializing Log4J from [WEB-INF/config/default/log4j.xml]
18-11-02 17:38:49 ERROR PUBLIC[main]info.magnolia.objectfactory.guice.GuiceComponentProviderBuilder: Magnolia failed to load module configuration with types {} and components {Key[type=info.magnolia.cms.pddescriptor.ProductDescriptorExtractor, annotation=[none]]=info.magnolia.objectfactory.configuration.ImplementationConfiguration@4e251e4d, Key[type=info.magnolia.cms.util.UnicodeNormalizer$Normalizer, annotation=[none]]=info.magnolia.objectfactory.configuration.ImplementationConfiguration@622f47c4, Key[type=info.magnolia.content2bean.Content2BeanProcessor, annotation=[none]]=info.magnolia.objectfactory.configuration.ImplementationConfiguration@56c25298, Key[type=info.magnolia.cms.filters.FilterManager, annotation=[none]]=info.magnolia.objectfactory.configuration.ImplementationConfiguration@210b1e0a, Key[type=info.magnolia.cms.beans.config.ConfigLoader, annotation=[none]]=info.magnolia.objectfactory.configuration.ImplementationConfiguration@3b12c7f8, Key[type=info.magnolia.cms.core.FileSystemHelper, annotation=[none]]=info.magnolia.objectfactory.configuration.ImplementationConfiguration@63167b60, Key[type=info.magnolia.cms.i18n.MessagesManager, annotation=[none]]=info.magnolia.objectfactory.configuration.ImplementationConfiguration@9ac51e8b, Key[type=info.magnolia.cms.license.LicenseFileExtractor, annotation=[none]]=info.magnolia.objectfactory.configuration.ImplementationConfiguration@e660a786, Key[type=info.magnolia.content2bean.TypeMapping, annotation=[none]]=info.magnolia.objectfactory.configuration.ImplementationConfiguration@a0a859f1, Key[type=info.magnolia.context.SystemContext, annotation=[none]]=info.magnolia.objectfactory.configuration.ImplementationConfiguration@f98910d0, Key[type=info.magnolia.cms.beans.config.VersionConfig, annotation=[none]]=info.magnolia.objectfactory.configuration.ImplementationConfiguration@b2d693be, Key[type=info.magnolia.init.MagnoliaConfigurationProperties, annotation=[none]]=info.magnolia.objectfactory.configuration.ImplementationConfiguration@69e0fc4f, Key[type=info.magnolia.jcr.registry.SessionProviderRegistry, annotation=[none]]=info.magnolia.objectfactory.configuration.ImplementationConfiguration@1fa6adc2, Key[type=info.magnolia.transformer.BeanTypeResolver, annotation=[none]]=info.magnolia.objectfactory.configuration.ImplementationConfiguration@be83187a, Key[type=info.magnolia.content2bean.TransformationState, annotation=[none]]=info.magnolia.objectfactory.configuration.ImplementationConfiguration@a57e83b8, Key[type=info.magnolia.content2bean.Content2BeanTransformer, annotation=[none]]=info.magnolia.objectfactory.configuration.ImplementationConfiguration@753582eb}. Please ensure you don't have any legacy modules present in your web application.
com.google.inject.CreationException: Guice creation errors:

1) A binding to org.slf4j.Logger was already configured at [unknown source].
  at info.magnolia.objectfactory.guice.GuiceParentBindingsModule.configure(GuiceParentBindingsModule.java:85)

1 error
    at com.google.inject.internal.Errors.throwCreationExceptionIfErrorsExist(Errors.java:411)
    at com.google.inject.internal.InternalInjectorCreator.initializeStatically(InternalInjectorCreator.java:167)
    at com.google.inject.internal.InternalInjectorCreator.build(InternalInjectorCreator.java:119)
    at com.google.inject.InjectorBuilder.build(InjectorBuilder.java:100)
    at com.google.inject.Guice.createInjector(Guice.java:95)
    at com.google.inject.Guice.createInjector(Guice.java:83)
    at info.magnolia.objectfactory.guice.GuiceComponentProviderBuilder.build(GuiceComponentProviderBuilder.java:149)
    at info.magnolia.objectfactory.guice.GuiceComponentProviderBuilder.build(GuiceComponentProviderBuilder.java:196)
    at info.magnolia.init.MagnoliaServletContextListener.contextInitialized(MagnoliaServletContextListener.java:168)
    at info.magnolia.init.MagnoliaServletContextListener.contextInitialized(MagnoliaServletContextListener.java:128)
    at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4643)
    at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5109)
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
    at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1429)
    at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1419)
    at java.util.concurrent.FutureTask.run(FutureTask.java:266)
    at org.apache.tomcat.util.threads.InlineExecutorService.execute(InlineExecutorService.java:75)
    at java.util.concurrent.AbstractExecutorService.submit(AbstractExecutorService.java:134)
    at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:944)
    at org.apache.catalina.core.StandardHost.startInternal(StandardHost.java:839)
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
    at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1429)
    at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1419)
    at java.util.concurrent.FutureTask.run(FutureTask.java:266)
    at org.apache.tomcat.util.threads.InlineExecutorService.execute(InlineExecutorService.java:75)
    at java.util.concurrent.AbstractExecutorService.submit(AbstractExecutorService.java:134)
    at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:944)
    at org.apache.catalina.core.StandardEngine.startInternal(StandardEngine.java:261)
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
    at org.apache.catalina.core.StandardService.startInternal(StandardService.java:422)
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
    at org.apache.catalina.core.StandardServer.startInternal(StandardServer.java:770)
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
    at org.apache.catalina.startup.Catalina.start(Catalina.java:682)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:498)
    at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:350)
    at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:492)
18-11-02 17:38:49 ERROR PUBLIC[main]info.magnolia.init.MagnoliaServletContextListener: Oops, Magnolia could not be started
com.google.inject.CreationException: Guice creation errors:

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Answer 1

这个错误告诉您的是缺少各种类型映射。根据错误中提到的映射，我猜测这些是通常用magnolia-core-x.y.z.jar:/META-INF/magnolia/core.xml描述的映射。Jar本身或者至少它包含的类必须在类路径中，否则Magnolia甚至不会在启动过程中取得如此大的进展。对我来说，为什么会缺少jar中的映射文件是一个谜。

您是否正在尝试从源代码或使用现有的预编译版本编译Magnolia？或者，您可能在类路径上的某个位置具有相同名称的文件，而类加载器在从magnolia-core.jar加载正确的文件之前加载了该文件