使用openJpa模塊時，slf4j不能在JBOSS中工作

Question

當我不使用openJpa時，我的EAR應用程序運行良好。一旦我使用開放的JPA，我得到「SLF4J無法加載類blaaa」。如何配置openJpa模塊以使用我從pom.xml提供的SL4J並避免該錯誤？

我使用JBoss 7.1.1

的pom.xml

<properties> 

    <slf4j.version>1.7.3</slf4j.version> 
    <logback.version>1.0.10</logback.version> 
     </properties> 
    <dependency> 
     <groupId>org.slf4j</groupId> 
     <artifactId>slf4j-api</artifactId> 
     <version>${slf4j.version}</version> 
    </dependency> 
    <dependency> 
     <groupId>ch.qos.logback</groupId> 
     <artifactId>logback-classic</artifactId> 
     <version>${logback.version}</version> 
    </dependency> 
    <dependency> 
     <groupId>ch.qos.logback</groupId> 
     <artifactId>logback-core</artifactId> 
     <version>${logback.version}</version> 
    </dependency> 

.......

OpenJPA的module.xml

<module xmlns="urn:jboss:module:1.1" name="org.apache.openjpa"> 
    <resources> 
     <resource-root path="openjpa-2.2.0.jar"/> 
     <resource-root path="openjpa-all-2.2.0.jar"/> 
    </resources> 
     <dependencies> 
      <module name="javax.persistence.api"/> 
      <module name="javax.transaction.api"/> 
      <module name="javax.validation.api"/> 
      <module name="org.apache.commons.lang"/> 
      <module name="org.apache.commons.collections"/> 
      <module name="org.slf4j"/> 
     </dependencies> 
</module> 

JBoss的部署，structure.xml

<?xml version="1.0" encoding="UTF-8"?> 

<jboss-deployment-structure> 
    <deployment> 
     <!-- Exclusions allow you to prevent the server from automatically adding some dependencies  --> 
     <exclusions> 
      <module name="org.slf4j" /> 
      <module name="org.slf4j.impl" /> 
     </exclusions> 
    </deployment> 
</jboss-deployment-structure> 

錯誤

10:17:53,854 ERROR [stderr] (MSC service thread 1-4) SLF4J: Failed to load class "org.slf4j.impl.StaticLoggerBinder". 

10:17:53,860 ERROR [stderr] (MSC service thread 1-4) SLF4J: Defaulting to no-operation (NOP) logger implementation 

10:17:53,866 ERROR [stderr] (MSC service thread 1-4) SLF4J: See http://www.slf4j.org/codes.html#StaticLoggerBinder for further details. 

10:17:53,873 SEVERE [javax.enterprise.resource.webcontainer.jsf.config] (MSC service thread 1-4) Critical error during deployment: : java.lang.LinkageError: loader constraint violation: when resolving interface method "org.slf4j.ILoggerFactory.getLogger(Ljava/lang/String;)Lorg/slf4j/Logger;" the class loader (instance of org/jboss/modules/ModuleClassLoader) of the current class, org/slf4j/LoggerFactory, and the class loader (instance of org/jboss/modules/ModuleClassLoader) for resolved class, org/slf4j/ILoggerFactory, have different Class objects for the type org/slf4j/Logger used in the signature 
    at org.slf4j.LoggerFactory.getLogger(LoggerFactory.java:242) [openjpa-all-2.2.0.jar:2.2.0] 
    at org.slf4j.LoggerFactory.getLogger(LoggerFactory.java:254) [openjpa-all-2.2.0.jar:2.2.0] 
    at net.sf.ehcache.CacheManager.<clinit>(CacheManager.java:131) [ehcache-ee-2.6.2.jar:] 
    at com.zreflect.emyed.whiteboard.controller.CacheController.<init>(CacheController.java:39) [classes:] 
    at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) [rt.jar:1.6.0_25] 
    at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39) [rt.jar:1.6.0_25] 
    at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27) [rt.jar:1.6.0_25] 
    at java.lang.reflect.Constructor.newInstance(Constructor.java:513) [rt.jar:1.6.0_25] 
    at java.lang.Class.newInstance0(Class.java:355) [rt.jar:1.6.0_25] 
    at java.lang.Class.newInstance(Class.java:308) [rt.jar:1.6.0_25] 
    at com.sun.faces.mgbean.BeanBuilder.newBeanInstance(BeanBuilder.java:188) [jsf-impl-2.1.7-jbossorg-2.jar:] 
    at com.sun.faces.mgbean.BeanBuilder.build(BeanBuilder.java:102) [jsf-impl-2.1.7-jbossorg-2.jar:] 
    at com.sun.faces.mgbean.BeanManager.createAndPush(BeanManager.java:409) [jsf-impl-2.1.7-jbossorg-2.jar:] 
    at com.sun.faces.mgbean.BeanManager.create(BeanManager.java:269) [jsf-impl-2.1.7-jbossorg-2.jar:] 
    at com.sun.faces.mgbean.BeanManager.create(BeanManager.java:256) [jsf-impl-2.1.7-jbossorg-2.jar:] 
    at com.sun.faces.config.ConfigureListener.contextInitialized(ConfigureListener.java:255) [jsf-impl-2.1.7-jbossorg-2.jar:] 
    at org.apache.catalina.core.StandardContext.contextListenerStart(StandardContext.java:3392) [jbossweb-7.0.13.Final.jar:] 
    at org.apache.catalina.core.StandardContext.start(StandardContext.java:3850) [jbossweb-7.0.13.Final.jar:] 
    at org.jboss.as.web.deployment.WebDeploymentService.start(WebDeploymentService.java:90) [jboss-as-web-7.1.1.Final.jar:7.1.1.Final] 
    at org.jboss.msc.service.ServiceControllerImpl$StartTask.startService(ServiceControllerImpl.java:1811) 
    at org.jboss.msc.service.ServiceControllerImpl$StartTask.run(ServiceControllerImpl.java:1746) 
    at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886) [rt.jar:1.6.0_25] 
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908) [rt.jar:1.6.0_25] 
    at java.lang.Thread.run(Thread.java:662) [rt.jar:1.6.0_25] 

10:17:54,007 ERROR [org.apache.catalina.core.ContainerBase.[jboss.web].[default-host].[/emyed-whiteboard]] (MSC service thread 1-4) Exception sending context initialized event to listener instance of class com.sun.faces.config.ConfigureListener: java.lang.RuntimeException: java.lang.LinkageError: loader constraint violation: when resolving interface method "org.slf4j.ILoggerFactory.getLogger(Ljava/lang/String;)Lorg/slf4j/Logger;" the class loader (instance of org/jboss/modules/ModuleClassLoader) of the current class, org/slf4j/LoggerFactory, and the class loader (instance of org/jboss/modules/ModuleClassLoader) for resolved class, org/slf4j/ILoggerFactory, have different Class objects for the type org/slf4j/Logger used in the signature 
    at com.sun.faces.config.ConfigureListener.contextInitialized(ConfigureListener.java:292) [jsf-impl-2.1.7-jbossorg-2.jar:] 
    at org.apache.catalina.core.StandardContext.contextListenerStart(StandardContext.java:3392) [jbossweb-7.0.13.Final.jar:] 
    at org.apache.catalina.core.StandardContext.start(StandardContext.java:3850) [jbossweb-7.0.13.Final.jar:] 
    at org.jboss.as.web.deployment.WebDeploymentService.start(WebDeploymentService.java:90) [jboss-as-web-7.1.1.Final.jar:7.1.1.Final] 
    at org.jboss.msc.service.ServiceControllerImpl$StartTask.startService(ServiceControllerImpl.java:1811) 
    at org.jboss.msc.service.ServiceControllerImpl$StartTask.run(ServiceControllerImpl.java:1746) 
    at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886) [rt.jar:1.6.0_25] 
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908) [rt.jar:1.6.0_25] 
    at java.lang.Thread.run(Thread.java:662) [rt.jar:1.6.0_25] 
Caused by: java.lang.LinkageError: loader constraint violation: when resolving interface method "org.slf4j.ILoggerFactory.getLogger(Ljava/lang/String;)Lorg/slf4j/Logger;" the class loader (instance of org/jboss/modules/ModuleClassLoader) of the current class, org/slf4j/LoggerFactory, and the class loader (instance of org/jboss/modules/ModuleClassLoader) for resolved class, org/slf4j/ILoggerFactory, have different Class objects for the type org/slf4j/Logger used in the signature 
    at org.slf4j.LoggerFactory.getLogger(LoggerFactory.java:242) [openjpa-all-2.2.0.jar:2.2.0] 
    at org.slf4j.LoggerFactory.getLogger(LoggerFactory.java:254) [openjpa-all-2.2.0.jar:2.2.0] 
    at net.sf.ehcache.CacheManager.<clinit>(CacheManager.java:131) [ehcache-ee-2.6.2.jar:] 
    at com.zreflect.emyed.whiteboard.controller.CacheController.<init>(CacheController.java:39) [classes:] 
    at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) [rt.jar:1.6.0_25] 
    at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39) [rt.jar:1.6.0_25] 
    at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27) [rt.jar:1.6.0_25] 
    at java.lang.reflect.Constructor.newInstance(Constructor.java:513) [rt.jar:1.6.0_25] 
    at java.lang.Class.newInstance0(Class.java:355) [rt.jar:1.6.0_25] 
    at java.lang.Class.newInstance(Class.java:308) [rt.jar:1.6.0_25] 
    at com.sun.faces.mgbean.BeanBuilder.newBeanInstance(BeanBuilder.java:188) [jsf-impl-2.1.7-jbossorg-2.jar:] 
    at com.sun.faces.mgbean.BeanBuilder.build(BeanBuilder.java:102) [jsf-impl-2.1.7-jbossorg-2.jar:] 
    at com.sun.faces.mgbean.BeanManager.createAndPush(BeanManager.java:409) [jsf-impl-2.1.7-jbossorg-2.jar:] 
    at com.sun.faces.mgbean.BeanManager.create(BeanManager.java:269) [jsf-impl-2.1.7-jbossorg-2.jar:] 
    at com.sun.faces.mgbean.BeanManager.create(BeanManager.java:256) [jsf-impl-2.1.7-jbossorg-2.jar:] 
    at com.sun.faces.config.ConfigureListener.contextInitialized(ConfigureListener.java:255) [jsf-impl-2.1.7-jbossorg-2.jar:] 
    ... 8 more 

Answer 1

看起來你很可能得到兩個不同的版本sfl4j的。將<scope>provided</scope>添加到您的slf4j依賴項中。另一種選擇是提供jboss-deployment-structure.xml來排除服務器slf4j。

例的JBoss部署-structure.xml：

<jboss-deployment-structure xmlns="urn:jboss:deployment-structure:1.2"> 
    <deployment> 
     <exclusions> 
      <module name="org.slf4j" /> 
     </exclusions> 
    </deployment> 
</jboss-deployment-structure> 

另外，還要確保你沒有傳遞SLF4J的依賴，就像sfl4j-jdk14.jar。