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当我不使用 openJpa 时，我的 EAR 应用程序运行良好。一旦我使用 open JPA，我就会得到“SLF4J 无法加载类 blaaa”。如何配置 openJpa 模块以使用我从 pom.xml 提供的 SL4J 并避免该错误？

我使用 JBOSS 7.1.1

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 模块.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-部署-结构.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>

错误

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
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1 回答 1

0

看起来您可能获得了两个不同版本的 sfl4j。添加<scope>provided</scope>到您的 slf4j 依赖项。另一种选择是提供一个jboss-deployment-structure.xml来排除服务器 slf4j。

示例 jboss-deployment-structure.xml：

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

还要确保您没有传递 slf4j 依赖项，例如 sfl4j-jdk14.jar。

于 2013-04-25T15:43:24.223 回答