EAR 中打包的 EJB 模块中的类加载
Classloading in EJB module packaged in EAR
我目前正在开发一个依赖于 Java EE 7 的原型。Maven 用于依赖管理，插件 maven-ear-plugin 用于最终的 EAR 构建。后者然后部署在wildfly 10.0应用服务器上。
项目结构如下（简化）：
- 控制器-api
- 控制器实现
- 型号-api
- 模型实现
- system-parent（maven父包）
- system-ear（生成耳朵）
- view-webapp
EAR 由两个 ejb3 模块 "controler-impl" 和 "model-impl" 以及 Web 应用程序 "view-webapp" 组成。 maven-ear-plugin 相应配置：
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-ear-plugin</artifactId>
<configuration>
<defaultLibBundleDir>lib</defaultLibBundleDir>
<generatedDescriptorLocation>META-INF</generatedDescriptorLocation>
<modules>
<ejbModule>
<groupId>com.domain.abc</groupId>
<artifactId>model-impl</artifactId>
</ejbModule>
<ejbModule>
<groupId>com.domain.abc</groupId>
<artifactId>controler-impl</artifactId>
</ejbModule>
<webModule>
<groupId>com.domain.abc</groupId>
<artifactId>view-webapp</artifactId>
<contextRoot>/myapp</contextRoot>
</webModule>
</modules>
</configuration>
</plugin>
到目前为止，一切顺利，原型已经处于良好状态。
然而，这几天我一直面临着一个无法应付的问题：
在控制器实现中，我想使用反射 (org.reflections) 来确定 class 已经用特定注释丰富的元素。因此，我添加了相应的依赖项，jar reflections-0.9.10.jar 正确存储在 EAR 的 lib 文件夹中。
但是在 运行 的时候，我总是遇到一个 ClassNotFoundException 告诉我 ejb 模块 controller-impl 中的 class 加载器无法在反射中找到 classes -0.9.10.jar。为了进行调试，我浏览了 classloader 层次结构并检查了哪些包和 classes 可用于它们。
我找到了三个 classloader：
- ModuleClassLoader（父指2）
- AppClassLoader（父指3）
- ExtClassLoader（父级为空）
None 他们能够访问 reflections-0.9 中的 classes。10.jar 存放在中央 EAR lib 文件夹中。这很奇怪，因为我预计所有耳朵模块都可以访问这个关键文件夹。
当然，我在网上寻找现有的解决方案。例如，我发现以下文章更详细地解释了 class 加载器 hierarchy/separation。
Packaging EJB 3 Applications - Developer.com
基于本文的Table2，我假设我必须在ejb模块中添加一个清单文件。当然，我通过更改 maven-ear-plugin 的配置或什至将 maven-ejb-plugin 添加到模块来尝试此操作。但我总是遇到错误 "Class Path [...] in [...] does not point to a valid jar for a Class-Path reference" 并且缺少对 EAR lib 文件夹的引用的基本问题仍然存在（请参阅下面的堆栈跟踪）。
我想我可能必须更好地配置 maven-ear-plugin and/or maven-ejb-plugin（不管那是什么意思）- 有人知道如何做吗？还是我漏掉了什么重要的东西？
非常感谢
尼古拉斯
根据评论中的要求更新
控制器实现的POM
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>com.domain.abc</groupId>
<artifactId>prototype</artifactId>
<version>1.0.0-SNAPSHOT</version>
<relativePath>../system-parent/pom.xml</relativePath>
</parent>
<artifactId>controler-impl</artifactId>
<packaging>jar</packaging>
<name>Controler Implementation (EJB)</name>
<dependencies>
<!-- internal dependencies (provided by EAR) -->
<!-- [...] -->
<dependency>
<groupId>com.domain.abc</groupId>
<artifactId>controler-api</artifactId>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>com.domain.abc</groupId>
<artifactId>model-api</artifactId>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>com.domain.abc</groupId>
<artifactId>model-impl</artifactId>
<type>ejb</type>
<scope>provided</scope>
</dependency>
<!-- external dependencies (provided by EAR) -->
<!-- [...] -->
<dependency>
<groupId>org.reflections</groupId>
<artifactId>reflections</artifactId>
<scope>provided</scope>
</dependency>
<build>
<finalName>${project.artifactId}</finalName>
</build>
</project>
EAR 的 application.xml（由 maven-ear-plugin 生成）
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE application PUBLIC
"-//Sun Microsystems, Inc.//DTD J2EE Application 1.3//EN"
"http://java.sun.com/dtd/application_1_3.dtd">
<application>
<display-name>system-ear</display-name>
<description>...</description>
<module>
<ejb>model-impl-1.0.0-SNAPSHOT.jar</ejb>
</module>
<module>
<ejb>controler-impl-1.0.0-SNAPSHOT.jar</ejb>
</module>
<module>
<web>
<web-uri>view-webapp-1.0.0-SNAPSHOT.war</web-uri>
<context-root>/myapp</context-root>
</web>
</module>
</application>
堆栈跟踪摘录显示 reflections-0.9.10.jar 不可访问
09:48:27,222 ERROR [org.jboss.as.ejb3.invocation] (ServerService Thread Pool -- 67) WFLYEJB0034: EJB Invocation failed on component AccessControlManagerImpl for method public abstract org.apache.shiro.web.env.WebEnvironment com.domain.abc.controler.main.api.security.AccessControlManager.getPermssions(): javax.ejb.EJBException: java.lang.IllegalStateException: WFLYEE0042: Failed to construct component instance
at org.jboss.as.ejb3.tx.CMTTxInterceptor.handleExceptionInOurTx(CMTTxInterceptor.java:187)
at org.jboss.as.ejb3.tx.CMTTxInterceptor.invokeInOurTx(CMTTxInterceptor.java:277)
at org.jboss.as.ejb3.tx.CMTTxInterceptor.required(CMTTxInterceptor.java:327)
at org.jboss.as.ejb3.tx.CMTTxInterceptor.processInvocation(CMTTxInterceptor.java:239)
at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:340)
at org.jboss.as.ejb3.component.interceptors.CurrentInvocationContextInterceptor.processInvocation(CurrentInvocationContextInterceptor.java:41)
at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:340)
at org.jboss.as.ejb3.component.invocationmetrics.WaitTimeInterceptor.processInvocation(WaitTimeInterceptor.java:43)
at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:340)
at org.jboss.as.ejb3.security.SecurityContextInterceptor.processInvocation(SecurityContextInterceptor.java:100)
at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:340)
at org.jboss.invocation.InterceptorContext$Invocation.proceed(InterceptorContext.java:437)
at org.jboss.as.ejb3.concurrency.ContainerManagedConcurrencyInterceptor.processInvocation(ContainerManagedConcurrencyInterceptor.java:110)
at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:340)
at org.jboss.as.ejb3.component.interceptors.ShutDownInterceptorFactory.processInvocation(ShutDownInterceptorFactory.java:64)
at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:340)
at org.jboss.as.ejb3.component.interceptors.LoggingInterceptor.processInvocation(LoggingInterceptor.java:66)
at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:340)
at org.jboss.as.ee.component.NamespaceContextInterceptor.processInvocation(NamespaceContextInterceptor.java:50)
at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:340)
at org.jboss.as.ejb3.component.interceptors.AdditionalSetupInterceptor.processInvocation(AdditionalSetupInterceptor.java:54)
at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:340)
at org.jboss.invocation.ContextClassLoaderInterceptor.processInvocation(ContextClassLoaderInterceptor.java:64)
at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:340)
at org.jboss.invocation.InterceptorContext.run(InterceptorContext.java:356)
at org.wildfly.security.manager.WildFlySecurityManager.doChecked(WildFlySecurityManager.java:636)
at org.jboss.invocation.AccessCheckingInterceptor.processInvocation(AccessCheckingInterceptor.java:61)
at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:340)
at org.jboss.invocation.InterceptorContext.run(InterceptorContext.java:356)
at org.jboss.invocation.PrivilegedWithCombinerInterceptor.processInvocation(PrivilegedWithCombinerInterceptor.java:80)
at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:340)
at org.jboss.invocation.ChainedInterceptor.processInvocation(ChainedInterceptor.java:61)
at org.jboss.as.ee.component.ViewService$View.invoke(ViewService.java:195)
at org.jboss.as.ee.component.ViewDescription.processInvocation(ViewDescription.java:185)
at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:340)
at org.jboss.invocation.ChainedInterceptor.processInvocation(ChainedInterceptor.java:61)
at org.jboss.as.ee.component.ProxyInvocationHandler.invoke(ProxyInvocationHandler.java:73)
at com.domain.abc.controler.main.api.security.AccessControlManager$$$view4.getWebEnvironment(Unknown Source)
at sun.reflect.GeneratedMethodAccessor52.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java)
at java.lang.reflect.Method.invoke(Method.java:483)
at org.jboss.weld.util.reflection.Reflections.invokeAndUnwrap(Reflections.java:436)
at org.jboss.weld.bean.proxy.EnterpriseBeanProxyMethodHandler.invoke(EnterpriseBeanProxyMethodHandler.java:127)
at org.jboss.weld.bean.proxy.EnterpriseTargetBeanInstance.invoke(EnterpriseTargetBeanInstance.java:56)
at org.jboss.weld.bean.proxy.ProxyMethodHandler.invoke(ProxyMethodHandler.java:100)
at com.domain.abc.controler.main.impl.security.AccessControlManager08109816$Proxy$_$$_Weld$EnterpriseProxy$.getWebEnvironment(Unknown Source)
at sun.reflect.GeneratedMethodAccessor52.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java)
at java.lang.reflect.Method.invoke(Method.java:483)
at org.jboss.weld.bean.proxy.AbstractBeanInstance.invoke(AbstractBeanInstance.java:38)
at org.jboss.weld.bean.proxy.ProxyMethodHandler.invoke(ProxyMethodHandler.java:100)
at org.jboss.weld.proxies.AccessControlManager08109816$Proxy$_$$_WeldClientProxy.getWebEnvironment(Unknown Source)
at com.domain.abc.view.frontend.webapp.security.CustomViewEnvLoaderListener.createEnvironment(CustomViewEnvLoaderListener.java:23)
at org.apache.shiro.web.env.EnvironmentLoader.initEnvironment(EnvironmentLoader.java:133)
at org.apache.shiro.web.env.EnvironmentLoaderListener.contextInitialized(EnvironmentLoaderListener.java:58)
at io.undertow.servlet.core.ApplicationListeners.contextInitialized(ApplicationListeners.java:187)
at io.undertow.servlet.core.DeploymentManagerImpl.deploy(DeploymentManagerImpl.java:198)
at org.wildfly.extension.undertow.deployment.UndertowDeploymentService.startContext(UndertowDeploymentService.java:100)
at org.wildfly.extension.undertow.deployment.UndertowDeploymentService.run(UndertowDeploymentService.java:82)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)
at org.jboss.threads.JBossThread.run(JBossThread.java:320)
Caused by: java.lang.IllegalStateException: WFLYEE0042: Failed to construct component instance
at org.jboss.as.ee.component.BasicComponent.constructComponentInstance(BasicComponent.java:163)
at org.jboss.as.ee.component.BasicComponent.constructComponentInstance(BasicComponent.java:134)
at org.jboss.as.ee.component.BasicComponent.createInstance(BasicComponent.java:88)
at org.jboss.as.ejb3.component.singleton.SingletonComponent.getComponentInstance(SingletonComponent.java:124)
at org.jboss.as.ejb3.component.singleton.SingletonComponentInstanceAssociationInterceptor.processInvocation(SingletonComponentInstanceAssociationInterceptor.java:48)
at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:340)
at org.jboss.as.ejb3.tx.CMTTxInterceptor.invokeInOurTx(CMTTxInterceptor.java:275)
... 63 more
Caused by: javax.ejb.EJBException: WFLYEJB0442: Unexpected Error
at org.jboss.as.ejb3.tx.CMTTxInterceptor.handleExceptionInOurTx(CMTTxInterceptor.java:184)
at org.jboss.as.ejb3.tx.CMTTxInterceptor.invokeInOurTx(CMTTxInterceptor.java:277)
at org.jboss.as.ejb3.tx.CMTTxInterceptor.requiresNew(CMTTxInterceptor.java:344)
at org.jboss.as.ejb3.tx.LifecycleCMTTxInterceptor.processInvocation(LifecycleCMTTxInterceptor.java:66)
at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:340)
at org.jboss.as.weld.injection.WeldInjectionContextInterceptor.processInvocation(WeldInjectionContextInterceptor.java:43)
at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:340)
at org.jboss.as.ejb3.component.interceptors.CurrentInvocationContextInterceptor.processInvocation(CurrentInvocationContextInterceptor.java:41)
at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:340)
at org.jboss.as.ee.concurrent.ConcurrentContextInterceptor.processInvocation(ConcurrentContextInterceptor.java:45)
at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:340)
at org.jboss.invocation.ContextClassLoaderInterceptor.processInvocation(ContextClassLoaderInterceptor.java:64)
at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:340)
at org.jboss.invocation.InterceptorContext.run(InterceptorContext.java:356)
at org.jboss.invocation.PrivilegedWithCombinerInterceptor.processInvocation(PrivilegedWithCombinerInterceptor.java:80)
at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:340)
at org.jboss.invocation.ChainedInterceptor.processInvocation(ChainedInterceptor.java:61)
at org.jboss.as.ee.component.BasicComponent.constructComponentInstance(BasicComponent.java:161)
... 69 more
Caused by: java.lang.NoClassDefFoundError: org/reflections/Configuration
at com.domain.abc.controler.main.impl.security.AccessControlManagerImpl.postConstruct(AccessControlManagerImpl.java:71)
at sun.reflect.GeneratedMethodAccessor313.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java)
at java.lang.reflect.Method.invoke(Method.java:483)
at org.jboss.as.ee.component.ManagedReferenceLifecycleMethodInterceptor.processInvocation(ManagedReferenceLifecycleMethodInterceptor.java:96)
at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:340)
at org.jboss.as.weld.ejb.Jsr299BindingsInterceptor.doLifecycleInterception(Jsr299BindingsInterceptor.java:114)
at org.jboss.as.weld.ejb.Jsr299BindingsInterceptor.processInvocation(Jsr299BindingsInterceptor.java:103)
at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:340)
at org.jboss.invocation.InterceptorContext$Invocation.proceed(InterceptorContext.java:437)
at org.jboss.weld.ejb.AbstractEJBRequestScopeActivationInterceptor.aroundInvoke(AbstractEJBRequestScopeActivationInterceptor.java:73)
at org.jboss.as.weld.ejb.EjbRequestScopeActivationInterceptor.processInvocation(EjbRequestScopeActivationInterceptor.java:83)
at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:340)
at org.jboss.as.weld.injection.WeldInjectionInterceptor.processInvocation(WeldInjectionInterceptor.java:53)
at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:340)
at org.jboss.as.ee.component.AroundConstructInterceptorFactory.processInvocation(AroundConstructInterceptorFactory.java:28)
at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:340)
at org.jboss.as.weld.injection.WeldInterceptorInjectionInterceptor.processInvocation(WeldInterceptorInjectionInterceptor.java:56)
at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:340)
at org.jboss.as.weld.ejb.Jsr299BindingsCreateInterceptor.processInvocation(Jsr299BindingsCreateInterceptor.java:100)
at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:340)
at org.jboss.as.ee.component.NamespaceContextInterceptor.processInvocation(NamespaceContextInterceptor.java:50)
at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:340)
at org.jboss.as.ejb3.tx.CMTTxInterceptor.invokeInOurTx(CMTTxInterceptor.java:275)
... 85 more
Caused by: java.lang.ClassNotFoundException: org.reflections.Configuration from [Module "deployment.prototype.ear.controler-impl-1.0.0-SNAPSHOT.jar:main" from Service Module Loader]
at org.jboss.modules.ModuleClassLoader.findClass(ModuleClassLoader.java:198)
at org.jboss.modules.ConcurrentClassLoader.performLoadClassUnchecked(ConcurrentClassLoader.java:363)
at org.jboss.modules.ConcurrentClassLoader.performLoadClass(ConcurrentClassLoader.java:351)
at org.jboss.modules.ConcurrentClassLoader.loadClass(ConcurrentClassLoader.java:93)
... 109 more
似乎 provided 对 controler-impl[=] 的 reflections 依赖项的问题结果26=]模块。
有了所提供的依赖项，您没有将它绑定到 JAR 的 class 路径，即使它被提取并放入您的 EAR/lib 文件夹中。
您需要从 EAR pom.xml 文件中删除依赖项，并从 [=] 中删除 provided 关键字18=]reflections controler-impl 模块的依赖性。
这样做，您需要 Maven 将依赖项绑定到您的 JAR 的 class 路径，并通过传递性将其放置在您的 EAR/lib 文件夹中。
我目前正在开发一个依赖于 Java EE 7 的原型。Maven 用于依赖管理，插件 maven-ear-plugin 用于最终的 EAR 构建。后者然后部署在wildfly 10.0应用服务器上。
项目结构如下（简化）：
- 控制器-api
- 控制器实现
- 型号-api
- 模型实现
- system-parent（maven父包）
- system-ear（生成耳朵）
- view-webapp
EAR 由两个 ejb3 模块 "controler-impl" 和 "model-impl" 以及 Web 应用程序 "view-webapp" 组成。 maven-ear-plugin 相应配置：
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-ear-plugin</artifactId>
<configuration>
<defaultLibBundleDir>lib</defaultLibBundleDir>
<generatedDescriptorLocation>META-INF</generatedDescriptorLocation>
<modules>
<ejbModule>
<groupId>com.domain.abc</groupId>
<artifactId>model-impl</artifactId>
</ejbModule>
<ejbModule>
<groupId>com.domain.abc</groupId>
<artifactId>controler-impl</artifactId>
</ejbModule>
<webModule>
<groupId>com.domain.abc</groupId>
<artifactId>view-webapp</artifactId>
<contextRoot>/myapp</contextRoot>
</webModule>
</modules>
</configuration>
</plugin>
到目前为止，一切顺利，原型已经处于良好状态。
然而，这几天我一直面临着一个无法应付的问题：
在控制器实现中，我想使用反射 (org.reflections) 来确定 class 已经用特定注释丰富的元素。因此，我添加了相应的依赖项，jar reflections-0.9.10.jar 正确存储在 EAR 的 lib 文件夹中。
但是在 运行 的时候，我总是遇到一个 ClassNotFoundException 告诉我 ejb 模块 controller-impl 中的 class 加载器无法在反射中找到 classes -0.9.10.jar。为了进行调试，我浏览了 classloader 层次结构并检查了哪些包和 classes 可用于它们。
我找到了三个 classloader：
- ModuleClassLoader（父指2）
- AppClassLoader（父指3）
- ExtClassLoader（父级为空）
None 他们能够访问 reflections-0.9 中的 classes。10.jar 存放在中央 EAR lib 文件夹中。这很奇怪，因为我预计所有耳朵模块都可以访问这个关键文件夹。
当然，我在网上寻找现有的解决方案。例如，我发现以下文章更详细地解释了 class 加载器 hierarchy/separation。
Packaging EJB 3 Applications - Developer.com
基于本文的Table2，我假设我必须在ejb模块中添加一个清单文件。当然，我通过更改 maven-ear-plugin 的配置或什至将 maven-ejb-plugin 添加到模块来尝试此操作。但我总是遇到错误 "Class Path [...] in [...] does not point to a valid jar for a Class-Path reference" 并且缺少对 EAR lib 文件夹的引用的基本问题仍然存在（请参阅下面的堆栈跟踪）。
我想我可能必须更好地配置 maven-ear-plugin and/or maven-ejb-plugin（不管那是什么意思）- 有人知道如何做吗？还是我漏掉了什么重要的东西？
非常感谢
尼古拉斯
根据评论中的要求更新
控制器实现的POM
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>com.domain.abc</groupId>
<artifactId>prototype</artifactId>
<version>1.0.0-SNAPSHOT</version>
<relativePath>../system-parent/pom.xml</relativePath>
</parent>
<artifactId>controler-impl</artifactId>
<packaging>jar</packaging>
<name>Controler Implementation (EJB)</name>
<dependencies>
<!-- internal dependencies (provided by EAR) -->
<!-- [...] -->
<dependency>
<groupId>com.domain.abc</groupId>
<artifactId>controler-api</artifactId>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>com.domain.abc</groupId>
<artifactId>model-api</artifactId>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>com.domain.abc</groupId>
<artifactId>model-impl</artifactId>
<type>ejb</type>
<scope>provided</scope>
</dependency>
<!-- external dependencies (provided by EAR) -->
<!-- [...] -->
<dependency>
<groupId>org.reflections</groupId>
<artifactId>reflections</artifactId>
<scope>provided</scope>
</dependency>
<build>
<finalName>${project.artifactId}</finalName>
</build>
</project>
application.xml（由 maven-ear-plugin 生成）
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE application PUBLIC
"-//Sun Microsystems, Inc.//DTD J2EE Application 1.3//EN"
"http://java.sun.com/dtd/application_1_3.dtd">
<application>
<display-name>system-ear</display-name>
<description>...</description>
<module>
<ejb>model-impl-1.0.0-SNAPSHOT.jar</ejb>
</module>
<module>
<ejb>controler-impl-1.0.0-SNAPSHOT.jar</ejb>
</module>
<module>
<web>
<web-uri>view-webapp-1.0.0-SNAPSHOT.war</web-uri>
<context-root>/myapp</context-root>
</web>
</module>
</application>
堆栈跟踪摘录显示 reflections-0.9.10.jar 不可访问
09:48:27,222 ERROR [org.jboss.as.ejb3.invocation] (ServerService Thread Pool -- 67) WFLYEJB0034: EJB Invocation failed on component AccessControlManagerImpl for method public abstract org.apache.shiro.web.env.WebEnvironment com.domain.abc.controler.main.api.security.AccessControlManager.getPermssions(): javax.ejb.EJBException: java.lang.IllegalStateException: WFLYEE0042: Failed to construct component instance
at org.jboss.as.ejb3.tx.CMTTxInterceptor.handleExceptionInOurTx(CMTTxInterceptor.java:187)
at org.jboss.as.ejb3.tx.CMTTxInterceptor.invokeInOurTx(CMTTxInterceptor.java:277)
at org.jboss.as.ejb3.tx.CMTTxInterceptor.required(CMTTxInterceptor.java:327)
at org.jboss.as.ejb3.tx.CMTTxInterceptor.processInvocation(CMTTxInterceptor.java:239)
at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:340)
at org.jboss.as.ejb3.component.interceptors.CurrentInvocationContextInterceptor.processInvocation(CurrentInvocationContextInterceptor.java:41)
at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:340)
at org.jboss.as.ejb3.component.invocationmetrics.WaitTimeInterceptor.processInvocation(WaitTimeInterceptor.java:43)
at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:340)
at org.jboss.as.ejb3.security.SecurityContextInterceptor.processInvocation(SecurityContextInterceptor.java:100)
at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:340)
at org.jboss.invocation.InterceptorContext$Invocation.proceed(InterceptorContext.java:437)
at org.jboss.as.ejb3.concurrency.ContainerManagedConcurrencyInterceptor.processInvocation(ContainerManagedConcurrencyInterceptor.java:110)
at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:340)
at org.jboss.as.ejb3.component.interceptors.ShutDownInterceptorFactory.processInvocation(ShutDownInterceptorFactory.java:64)
at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:340)
at org.jboss.as.ejb3.component.interceptors.LoggingInterceptor.processInvocation(LoggingInterceptor.java:66)
at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:340)
at org.jboss.as.ee.component.NamespaceContextInterceptor.processInvocation(NamespaceContextInterceptor.java:50)
at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:340)
at org.jboss.as.ejb3.component.interceptors.AdditionalSetupInterceptor.processInvocation(AdditionalSetupInterceptor.java:54)
at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:340)
at org.jboss.invocation.ContextClassLoaderInterceptor.processInvocation(ContextClassLoaderInterceptor.java:64)
at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:340)
at org.jboss.invocation.InterceptorContext.run(InterceptorContext.java:356)
at org.wildfly.security.manager.WildFlySecurityManager.doChecked(WildFlySecurityManager.java:636)
at org.jboss.invocation.AccessCheckingInterceptor.processInvocation(AccessCheckingInterceptor.java:61)
at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:340)
at org.jboss.invocation.InterceptorContext.run(InterceptorContext.java:356)
at org.jboss.invocation.PrivilegedWithCombinerInterceptor.processInvocation(PrivilegedWithCombinerInterceptor.java:80)
at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:340)
at org.jboss.invocation.ChainedInterceptor.processInvocation(ChainedInterceptor.java:61)
at org.jboss.as.ee.component.ViewService$View.invoke(ViewService.java:195)
at org.jboss.as.ee.component.ViewDescription.processInvocation(ViewDescription.java:185)
at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:340)
at org.jboss.invocation.ChainedInterceptor.processInvocation(ChainedInterceptor.java:61)
at org.jboss.as.ee.component.ProxyInvocationHandler.invoke(ProxyInvocationHandler.java:73)
at com.domain.abc.controler.main.api.security.AccessControlManager$$$view4.getWebEnvironment(Unknown Source)
at sun.reflect.GeneratedMethodAccessor52.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java)
at java.lang.reflect.Method.invoke(Method.java:483)
at org.jboss.weld.util.reflection.Reflections.invokeAndUnwrap(Reflections.java:436)
at org.jboss.weld.bean.proxy.EnterpriseBeanProxyMethodHandler.invoke(EnterpriseBeanProxyMethodHandler.java:127)
at org.jboss.weld.bean.proxy.EnterpriseTargetBeanInstance.invoke(EnterpriseTargetBeanInstance.java:56)
at org.jboss.weld.bean.proxy.ProxyMethodHandler.invoke(ProxyMethodHandler.java:100)
at com.domain.abc.controler.main.impl.security.AccessControlManager08109816$Proxy$_$$_Weld$EnterpriseProxy$.getWebEnvironment(Unknown Source)
at sun.reflect.GeneratedMethodAccessor52.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java)
at java.lang.reflect.Method.invoke(Method.java:483)
at org.jboss.weld.bean.proxy.AbstractBeanInstance.invoke(AbstractBeanInstance.java:38)
at org.jboss.weld.bean.proxy.ProxyMethodHandler.invoke(ProxyMethodHandler.java:100)
at org.jboss.weld.proxies.AccessControlManager08109816$Proxy$_$$_WeldClientProxy.getWebEnvironment(Unknown Source)
at com.domain.abc.view.frontend.webapp.security.CustomViewEnvLoaderListener.createEnvironment(CustomViewEnvLoaderListener.java:23)
at org.apache.shiro.web.env.EnvironmentLoader.initEnvironment(EnvironmentLoader.java:133)
at org.apache.shiro.web.env.EnvironmentLoaderListener.contextInitialized(EnvironmentLoaderListener.java:58)
at io.undertow.servlet.core.ApplicationListeners.contextInitialized(ApplicationListeners.java:187)
at io.undertow.servlet.core.DeploymentManagerImpl.deploy(DeploymentManagerImpl.java:198)
at org.wildfly.extension.undertow.deployment.UndertowDeploymentService.startContext(UndertowDeploymentService.java:100)
at org.wildfly.extension.undertow.deployment.UndertowDeploymentService.run(UndertowDeploymentService.java:82)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)
at org.jboss.threads.JBossThread.run(JBossThread.java:320)
Caused by: java.lang.IllegalStateException: WFLYEE0042: Failed to construct component instance
at org.jboss.as.ee.component.BasicComponent.constructComponentInstance(BasicComponent.java:163)
at org.jboss.as.ee.component.BasicComponent.constructComponentInstance(BasicComponent.java:134)
at org.jboss.as.ee.component.BasicComponent.createInstance(BasicComponent.java:88)
at org.jboss.as.ejb3.component.singleton.SingletonComponent.getComponentInstance(SingletonComponent.java:124)
at org.jboss.as.ejb3.component.singleton.SingletonComponentInstanceAssociationInterceptor.processInvocation(SingletonComponentInstanceAssociationInterceptor.java:48)
at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:340)
at org.jboss.as.ejb3.tx.CMTTxInterceptor.invokeInOurTx(CMTTxInterceptor.java:275)
... 63 more
Caused by: javax.ejb.EJBException: WFLYEJB0442: Unexpected Error
at org.jboss.as.ejb3.tx.CMTTxInterceptor.handleExceptionInOurTx(CMTTxInterceptor.java:184)
at org.jboss.as.ejb3.tx.CMTTxInterceptor.invokeInOurTx(CMTTxInterceptor.java:277)
at org.jboss.as.ejb3.tx.CMTTxInterceptor.requiresNew(CMTTxInterceptor.java:344)
at org.jboss.as.ejb3.tx.LifecycleCMTTxInterceptor.processInvocation(LifecycleCMTTxInterceptor.java:66)
at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:340)
at org.jboss.as.weld.injection.WeldInjectionContextInterceptor.processInvocation(WeldInjectionContextInterceptor.java:43)
at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:340)
at org.jboss.as.ejb3.component.interceptors.CurrentInvocationContextInterceptor.processInvocation(CurrentInvocationContextInterceptor.java:41)
at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:340)
at org.jboss.as.ee.concurrent.ConcurrentContextInterceptor.processInvocation(ConcurrentContextInterceptor.java:45)
at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:340)
at org.jboss.invocation.ContextClassLoaderInterceptor.processInvocation(ContextClassLoaderInterceptor.java:64)
at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:340)
at org.jboss.invocation.InterceptorContext.run(InterceptorContext.java:356)
at org.jboss.invocation.PrivilegedWithCombinerInterceptor.processInvocation(PrivilegedWithCombinerInterceptor.java:80)
at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:340)
at org.jboss.invocation.ChainedInterceptor.processInvocation(ChainedInterceptor.java:61)
at org.jboss.as.ee.component.BasicComponent.constructComponentInstance(BasicComponent.java:161)
... 69 more
Caused by: java.lang.NoClassDefFoundError: org/reflections/Configuration
at com.domain.abc.controler.main.impl.security.AccessControlManagerImpl.postConstruct(AccessControlManagerImpl.java:71)
at sun.reflect.GeneratedMethodAccessor313.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java)
at java.lang.reflect.Method.invoke(Method.java:483)
at org.jboss.as.ee.component.ManagedReferenceLifecycleMethodInterceptor.processInvocation(ManagedReferenceLifecycleMethodInterceptor.java:96)
at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:340)
at org.jboss.as.weld.ejb.Jsr299BindingsInterceptor.doLifecycleInterception(Jsr299BindingsInterceptor.java:114)
at org.jboss.as.weld.ejb.Jsr299BindingsInterceptor.processInvocation(Jsr299BindingsInterceptor.java:103)
at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:340)
at org.jboss.invocation.InterceptorContext$Invocation.proceed(InterceptorContext.java:437)
at org.jboss.weld.ejb.AbstractEJBRequestScopeActivationInterceptor.aroundInvoke(AbstractEJBRequestScopeActivationInterceptor.java:73)
at org.jboss.as.weld.ejb.EjbRequestScopeActivationInterceptor.processInvocation(EjbRequestScopeActivationInterceptor.java:83)
at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:340)
at org.jboss.as.weld.injection.WeldInjectionInterceptor.processInvocation(WeldInjectionInterceptor.java:53)
at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:340)
at org.jboss.as.ee.component.AroundConstructInterceptorFactory.processInvocation(AroundConstructInterceptorFactory.java:28)
at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:340)
at org.jboss.as.weld.injection.WeldInterceptorInjectionInterceptor.processInvocation(WeldInterceptorInjectionInterceptor.java:56)
at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:340)
at org.jboss.as.weld.ejb.Jsr299BindingsCreateInterceptor.processInvocation(Jsr299BindingsCreateInterceptor.java:100)
at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:340)
at org.jboss.as.ee.component.NamespaceContextInterceptor.processInvocation(NamespaceContextInterceptor.java:50)
at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:340)
at org.jboss.as.ejb3.tx.CMTTxInterceptor.invokeInOurTx(CMTTxInterceptor.java:275)
... 85 more
Caused by: java.lang.ClassNotFoundException: org.reflections.Configuration from [Module "deployment.prototype.ear.controler-impl-1.0.0-SNAPSHOT.jar:main" from Service Module Loader]
at org.jboss.modules.ModuleClassLoader.findClass(ModuleClassLoader.java:198)
at org.jboss.modules.ConcurrentClassLoader.performLoadClassUnchecked(ConcurrentClassLoader.java:363)
at org.jboss.modules.ConcurrentClassLoader.performLoadClass(ConcurrentClassLoader.java:351)
at org.jboss.modules.ConcurrentClassLoader.loadClass(ConcurrentClassLoader.java:93)
... 109 more
似乎 provided 对 controler-impl[=] 的 reflections 依赖项的问题结果26=]模块。
有了所提供的依赖项，您没有将它绑定到 JAR 的 class 路径，即使它被提取并放入您的 EAR/lib 文件夹中。
您需要从 EAR pom.xml 文件中删除依赖项，并从 [=] 中删除 provided 关键字18=]reflections controler-impl 模块的依赖性。
这样做，您需要 Maven 将依赖项绑定到您的 JAR 的 class 路径，并通过传递性将其放置在您的 EAR/lib 文件夹中。