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Logging with slf4j in 7.1.0.Final
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created by <a href="https://community.jboss.org/people/norad_2">Dan D</a> in <i>JBoss AS 7 Development</i> - <a href="https://community.jboss.org/message/718928#718928">View the full discussion</a>
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<div class="jive-rendered-content"><p>Hi All,</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>In 7.1.0.CR1b I could include my own slf4j-api/slf4j12 and log4j.xml and have my application not use the JBoss logging modules.</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>I did this for the following reasons:</p><p>1. JBoss logging seems to be based on java.util.logging, which has no support for Message Diagnostic Context, which I use heavily</p><p>2. JBoss logging currently has no support for JMS Appenders like org.apache.log4j.net.JMSAppender</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>Based on what I see in this JIRA, and what I am seeing since I upgraded from CR1b to Final, it seems like JBoss logging has been forced onto us.</p><p><a class="jive-link-external-small" href="https://issues.jboss.org/browse/AS7-1389" target="_blank">https://issues.jboss.org/browse/AS7-1389</a></p><p>"<span style="color: #555555; font-family: 'Lucida Sans', 'Lucida Sans Unicode', 'Lucida Grande', Verdana, Arial, Helvetica, sans-serif; font-size: 12px; background-color: #fcfbfa;">Log API dependencies should be included automatically in deployments</span>"</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>The JIRA mentions being able to exclude the logging dependencies if I want to bring in my own.</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>I created a jboss-deployment-structure file</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>Now when I try to startup JBoss, I get warnings and errors and JBoss does not startup</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>00:30:07,297 WARN  <a class="jive-link-external-small" href="org.jboss.modules">org.jboss.modules</a> <a class="" href="https://community.jboss.org/message/718928#718928#718928/MSC service thread 1-3">Logging with slf4j in 7.1.0.Final</a> Failed to define class org.slf4j.Logger in Module "deployment.project.ear:main" from Service Module Loader: java.lang.LinkageError: loader constraint violation: loader (instance of org/jboss/modules/ModuleClassLoader) previously initiated loading for a different type with name "org/slf4j/Logger"</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>00:30:07,308 ERROR <a class="jive-link-external-small" href="org.jboss.msc.service.fail">org.jboss.msc.service.fail</a> <a class="" href="https://community.jboss.org/message/718928#718928#718928/MSC service thread 1-3">Logging with slf4j in 7.1.0.Final</a> MSC00001: Failed to start service jboss.deployment.subunit."project.ear"."project-services.jar".POST_MODULE: org.jboss.msc.service.StartException in service jboss.deployment.subunit."project.ear"."project-services.jar".POST_MODULE: Failed to process phase POST_MODULE of subdeployment "project-services.jar" of deployment "project.ear"</p><p>          at org.jboss.as.server.deployment.DeploymentUnitPhaseService.start(DeploymentUnitPhaseService.java:119) <a class="jive-link-external-small" href="">jboss-as-server-7.1.0.Final.jar:7.1.0.Final</a></p><p>          at org.jboss.msc.service.ServiceControllerImpl$StartTask.startService(ServiceControllerImpl.java:1811) <a class="jive-link-external-small" href="">jboss-msc-1.0.2.GA.jar:1.0.2.GA</a></p><p>          at org.jboss.msc.service.ServiceControllerImpl$StartTask.run(ServiceControllerImpl.java:1746) <a class="jive-link-external-small" href="">jboss-msc-1.0.2.GA.jar:1.0.2.GA</a></p><p>          at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886) <a class="" href="https://community.jboss.org/message/718928#718928#718928/rt.jar:1.6.0_29">Logging with slf4j in 7.1.0.Final</a></p><p>          at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908) <a class="" href="https://community.jboss.org/message/718928#718928#718928/rt.jar:1.6.0_29">Logging with slf4j in 7.1.0.Final</a></p><p>          at java.lang.Thread.run(Thread.java:662) <a class="" href="https://community.jboss.org/message/718928#718928#718928/rt.jar:1.6.0_29">Logging with slf4j in 7.1.0.Final</a></p><p>Caused by: java.lang.RuntimeException: Error getting reflective information for class com.example.project.package.api.remote.AbstractServiceLocator with ClassLoader ModuleClassLoader for Module "deployment.project.ear:main" from Service Module Loader</p><p>          at org.jboss.as.server.deployment.reflect.DeploymentReflectionIndex.getClassIndex(DeploymentReflectionIndex.java:70) <a class="jive-link-external-small" href="">jboss-as-server-7.1.0.Final.jar:7.1.0.Final</a></p><p>          at org.jboss.as.ee.metadata.MethodAnnotationAggregator.runtimeAnnotationInformation(MethodAnnotationAggregator.java:58)</p><p>          at org.jboss.as.ee.component.deployers.InterceptorAnnotationProcessor.handleAnnotations(InterceptorAnnotationProcessor.java:70)</p><p>          at org.jboss.as.ee.component.deployers.InterceptorAnnotationProcessor.processComponentConfig(InterceptorAnnotationProcessor.java:117)</p><p>          at org.jboss.as.ee.component.deployers.InterceptorAnnotationProcessor.deploy(InterceptorAnnotationProcessor.java:54)</p><p>          at org.jboss.as.server.deployment.DeploymentUnitPhaseService.start(DeploymentUnitPhaseService.java:113) <a class="jive-link-external-small" href="">jboss-as-server-7.1.0.Final.jar:7.1.0.Final</a></p><p>          ... 5 more</p><p>Caused by: java.lang.NoClassDefFoundError: org/slf4j/Logger</p><p>          at java.lang.Class.getDeclaredMethods0(Native Method) <a class="" href="https://community.jboss.org/message/718928#718928#718928/rt.jar:1.6.0_29">Logging with slf4j in 7.1.0.Final</a></p><p>          at java.lang.Class.privateGetDeclaredMethods(Class.java:2427) <a class="" href="https://community.jboss.org/message/718928#718928#718928/rt.jar:1.6.0_29">Logging with slf4j in 7.1.0.Final</a></p><p>          at java.lang.Class.getDeclaredMethods(Class.java:1791) <a class="" href="https://community.jboss.org/message/718928#718928#718928/rt.jar:1.6.0_29">Logging with slf4j in 7.1.0.Final</a></p><p>          at org.jboss.as.server.deployment.reflect.ClassReflectionIndex.(ClassReflectionIndex.java:65) <a class="jive-link-external-small" href="">jboss-as-server-7.1.0.Final.jar:7.1.0.Final</a></p><p>          at org.jboss.as.server.deployment.reflect.DeploymentReflectionIndex.getClassIndex(DeploymentReflectionIndex.java:66) <a class="jive-link-external-small" href="">jboss-as-server-7.1.0.Final.jar:7.1.0.Final</a></p><p>          ... 10 more</p><p>Caused by: java.lang.ClassNotFoundException: org.slf4j.Logger from [Module "deployment.project.ear:main" from Service Module Loader]</p><p>          at org.jboss.modules.ModuleClassLoader.findClass(ModuleClassLoader.java:190)</p><p>          at org.jboss.modules.ConcurrentClassLoader.performLoadClassUnchecked(ConcurrentClassLoader.java:468)</p><p>          at org.jboss.modules.ConcurrentClassLoader.performLoadClassChecked(ConcurrentClassLoader.java:456)</p><p>          at org.jboss.modules.ConcurrentClassLoader.performLoadClassChecked(ConcurrentClassLoader.java:423)</p><p>          at org.jboss.modules.ConcurrentClassLoader.performLoadClass(ConcurrentClassLoader.java:398)</p><p>          at org.jboss.modules.ConcurrentClassLoader.loadClass(ConcurrentClassLoader.java:120)</p><p>          ... 15 more</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>I have the necessary slf4j jars included in my ear, and this is all working fine in CR1b. </p></div>
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