Spring MVC Project unable to load log4j.xml

Question

I was having some problem when trying to load the log4j2.xml into my Spring MVC project. Here is my web.xml:

<context-param>
    <param-name>contextConfigLocation</param-name>
    <param-value>/WEB-INF/spring-mybatis.xml, /WEB-INF/log4j2.xml
    </param-value>
</context-param>
<!-- Spring MVC Servlet -->
<servlet>
    <servlet-name>dispatcher</servlet-name>
    <servlet-class>org.springframework.web.servlet.DispatcherServlet
    </servlet-class>
    <init-param>
        <param-name>contextConfigLocation</param-name>
        <param-value></param-value>
    </init-param>
    <load-on-startup>1</load-on-startup>
</servlet>

<servlet-mapping>
    <servlet-name>dispatcher</servlet-name>
    <url-pattern>/</url-pattern>
</servlet-mapping>

Then my log4j2.xml which is placed under /WEB-INF/ folder:

<?xml version="1.0" encoding="UTF-8"?>
<Configuration status="DEBUG">
<Appenders>
    <Console name="LogToConsole" target="SYSTEM_OUT">
        <PatternLayout
            pattern="%d{HH:mm:ss.SSS} %-5level %logger{36} - %msg%n" />
    </Console>
</Appenders>
<Loggers>
    <!-- avoid duplicated logs with additivity=false -->
    <Logger name="com.example" level="debug" additivity="false">
        <AppenderRef ref="LogToConsole" />
    </Logger>
    <Root level="error">
        <AppenderRef ref="LogToConsole" />
    </Root>
</Loggers>
</Configuration>

However, I am getting these error messages:

Jul 03, 2020 2:33:39 PM org.springframework.web.context.ContextLoader initWebApplicationContext
INFO: Root WebApplicationContext: initialization started
Jul 03, 2020 2:33:39 PM org.springframework.web.context.ContextLoader initWebApplicationContext
SEVERE: Context initialization failed
org.springframework.beans.factory.xml.XmlBeanDefinitionStoreException: Line 2 in XML document from ServletContext resource [/WEB-INF/log4j2.xml] is invalid; nested exception is org.xml.sax.SAXParseException; lineNumber: 2; columnNumber: 31; cvc-elt.1: Cannot find the declaration of element 'Configuration'.
    at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.doLoadBeanDefinitions(XmlBeanDefinitionReader.java:400)
    at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.loadBeanDefinitions(XmlBeanDefinitionReader.java:336)
    at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.loadBeanDefinitions(XmlBeanDefinitionReader.java:305)
    at org.springframework.beans.factory.support.AbstractBeanDefinitionReader.loadBeanDefinitions(AbstractBeanDefinitionReader.java:188)
    at org.springframework.beans.factory.support.AbstractBeanDefinitionReader.loadBeanDefinitions(AbstractBeanDefinitionReader.java:224)
    at org.springframework.beans.factory.support.AbstractBeanDefinitionReader.loadBeanDefinitions(AbstractBeanDefinitionReader.java:195)
    at org.springframework.web.context.support.XmlWebApplicationContext.loadBeanDefinitions(XmlWebApplicationContext.java:125)
    at org.springframework.web.context.support.XmlWebApplicationContext.loadBeanDefinitions(XmlWebApplicationContext.java:94)
    at org.springframework.context.support.AbstractRefreshableApplicationContext.refreshBeanFactory(AbstractRefreshableApplicationContext.java:133)
    at org.springframework.context.support.AbstractApplicationContext.obtainFreshBeanFactory(AbstractApplicationContext.java:637)
    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:522)
    at org.springframework.web.context.ContextLoader.configureAndRefreshWebApplicationContext(ContextLoader.java:401)
    at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:292)
    at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:103)
    at weblogic.servlet.internal.EventsManager$FireContextListenerAction.run(EventsManager.java:705)
    at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:326)
    at weblogic.security.service.SecurityManager.runAsForUserCode(SecurityManager.java:197)
    at weblogic.servlet.provider.WlsSecurityProvider.runAsForUserCode(WlsSecurityProvider.java:203)
    at weblogic.servlet.provider.WlsSubjectHandle.run(WlsSubjectHandle.java:71)
    at weblogic.servlet.internal.EventsManager.executeContextListener(EventsManager.java:251)
    at weblogic.servlet.internal.EventsManager.notifyContextCreatedEvent(EventsManager.java:204)
    at weblogic.servlet.internal.EventsManager.notifyContextCreatedEvent(EventsManager.java:189)
    at weblogic.servlet.internal.WebAppServletContext.preloadResources(WebAppServletContext.java:1921)
    at weblogic.servlet.internal.WebAppServletContext.start(WebAppServletContext.java:3101)
    at weblogic.servlet.internal.WebAppModule.startContexts(WebAppModule.java:1843)
    at weblogic.servlet.internal.WebAppModule.start(WebAppModule.java:884)
    at weblogic.application.internal.ExtensibleModuleWrapper$StartStateChange.next(ExtensibleModuleWrapper.java:360)
    at weblogic.application.internal.ExtensibleModuleWrapper$StartStateChange.next(ExtensibleModuleWrapper.java:356)
    at weblogic.application.utils.StateMachineDriver.nextState(StateMachineDriver.java:45)
    at weblogic.application.internal.ExtensibleModuleWrapper.start(ExtensibleModuleWrapper.java:138)
    at weblogic.application.internal.flow.ModuleListenerInvoker.start(ModuleListenerInvoker.java:124)
    at weblogic.application.internal.flow.ModuleStateDriver$3.next(ModuleStateDriver.java:233)
    at weblogic.application.internal.flow.ModuleStateDriver$3.next(ModuleStateDriver.java:228)
    at weblogic.application.utils.StateMachineDriver.nextState(StateMachineDriver.java:45)
    at weblogic.application.internal.flow.ModuleStateDriver.start(ModuleStateDriver.java:78)
    at weblogic.application.internal.flow.StartModulesFlow.activate(StartModulesFlow.java:52)
    at weblogic.application.internal.BaseDeployment$2.next(BaseDeployment.java:752)
    at weblogic.application.utils.StateMachineDriver.nextState(StateMachineDriver.java:45)
    at weblogic.application.internal.BaseDeployment.activate(BaseDeployment.java:262)
    at weblogic.application.internal.EarDeployment.activate(EarDeployment.java:66)
    at weblogic.application.internal.DeploymentStateChecker.activate(DeploymentStateChecker.java:165)
    at weblogic.deploy.internal.targetserver.AppContainerInvoker.activate(AppContainerInvoker.java:90)
    at weblogic.deploy.internal.targetserver.operations.AbstractOperation.activate(AbstractOperation.java:631)
    at weblogic.deploy.internal.targetserver.operations.ActivateOperation.activateDeployment(ActivateOperation.java:171)
    at weblogic.deploy.internal.targetserver.operations.ActivateOperation.doCommit(ActivateOperation.java:121)
    at weblogic.deploy.internal.targetserver.operations.StartOperation.doCommit(StartOperation.java:151)
    at weblogic.deploy.internal.targetserver.operations.AbstractOperation.commit(AbstractOperation.java:348)
    at weblogic.deploy.internal.targetserver.DeploymentManager.handleDeploymentCommit(DeploymentManager.java:907)
    at weblogic.deploy.internal.targetserver.DeploymentManager.activateDeploymentList(DeploymentManager.java:1468)
    at weblogic.deploy.internal.targetserver.DeploymentManager.handleCommit(DeploymentManager.java:459)
    at weblogic.deploy.internal.targetserver.DeploymentServiceDispatcher.commit(DeploymentServiceDispatcher.java:181)
    at weblogic.deploy.service.internal.targetserver.DeploymentReceiverCallbackDeliverer.doCommitCallback(DeploymentReceiverCallbackDeliverer.java:217)
    at weblogic.deploy.service.internal.targetserver.DeploymentReceiverCallbackDeliverer.access$100(DeploymentReceiverCallbackDeliverer.java:14)
    at weblogic.deploy.service.internal.targetserver.DeploymentReceiverCallbackDeliverer$2.run(DeploymentReceiverCallbackDeliverer.java:69)
    at weblogic.work.SelfTuningWorkManagerImpl$WorkAdapterImpl.run(SelfTuningWorkManagerImpl.java:670)
    at weblogic.invocation.ComponentInvocationContextManager._runAs(ComponentInvocationContextManager.java:352)
    at weblogic.invocation.ComponentInvocationContextManager.runAs(ComponentInvocationContextManager.java:337)
    at weblogic.work.LivePartitionUtility.doRunWorkUnderContext(LivePartitionUtility.java:57)
    at weblogic.work.PartitionUtility.runWorkUnderContext(PartitionUtility.java:41)
    at weblogic.work.SelfTuningWorkManagerImpl.runWorkUnderContext(SelfTuningWorkManagerImpl.java:644)
    at weblogic.work.ExecuteThread.execute(ExecuteThread.java:415)
    at weblogic.work.ExecuteThread.run(ExecuteThread.java:355)
Caused by: org.xml.sax.SAXParseException; lineNumber: 2; columnNumber: 31; cvc-elt.1: Cannot find the declaration of element 'Configuration'.
    at com.sun.org.apache.xerces.internal.util.ErrorHandlerWrapper.createSAXParseException(ErrorHandlerWrapper.java:203)
    at com.sun.org.apache.xerces.internal.util.ErrorHandlerWrapper.error(ErrorHandlerWrapper.java:134)
    at com.sun.org.apache.xerces.internal.impl.XMLErrorReporter.reportError(XMLErrorReporter.java:396)
    at com.sun.org.apache.xerces.internal.impl.XMLErrorReporter.reportError(XMLErrorReporter.java:327)
    at com.sun.org.apache.xerces.internal.impl.XMLErrorReporter.reportError(XMLErrorReporter.java:284)
    at com.sun.org.apache.xerces.internal.impl.xs.XMLSchemaValidator.handleStartElement(XMLSchemaValidator.java:1901)
    at com.sun.org.apache.xerces.internal.impl.xs.XMLSchemaValidator.startElement(XMLSchemaValidator.java:741)
    at com.sun.org.apache.xerces.internal.impl.XMLNSDocumentScannerImpl.scanStartElement(XMLNSDocumentScannerImpl.java:374)
    at com.sun.org.apache.xerces.internal.impl.XMLNSDocumentScannerImpl$NSContentDriver.scanRootElementHook(XMLNSDocumentScannerImpl.java:613)
    at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl$FragmentContentDriver.next(XMLDocumentFragmentScannerImpl.java:3132)
    at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl$PrologDriver.next(XMLDocumentScannerImpl.java:852)
    at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl.next(XMLDocumentScannerImpl.java:602)
    at com.sun.org.apache.xerces.internal.impl.XMLNSDocumentScannerImpl.next(XMLNSDocumentScannerImpl.java:112)
    at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanDocument(XMLDocumentFragmentScannerImpl.java:505)
    at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:842)
    at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:771)
    at com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(XMLParser.java:141)
    at com.sun.org.apache.xerces.internal.parsers.DOMParser.parse(DOMParser.java:243)
    at com.sun.org.apache.xerces.internal.jaxp.DocumentBuilderImpl.parse(DocumentBuilderImpl.java:339)
    at weblogic.xml.jaxp.RegistryDocumentBuilder.parse(RegistryDocumentBuilder.java:162)
    at org.springframework.beans.factory.xml.DefaultDocumentLoader.loadDocument(DefaultDocumentLoader.java:77)
    at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.doLoadDocument(XmlBeanDefinitionReader.java:430)
    at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.doLoadBeanDefinitions(XmlBeanDefinitionReader.java:388)
    ... 61 more

I imported log4j-api-2.13.3.jar, log4j-core-2.11.0.jar and slf4j-log4j12-2.0.0.jar into my project. Any ideas? Thanks!

Answer 1

Error shows that logaj2.xml is in wrong path:

org.springframework.beans.factory.xml.XmlBeanDefinitionStoreException: Line 2 in XML document from ServletContext resource [/WEB-INF/log4j2.xml] is invalid; 

So change the path of log4j2.xml file as src/main/resources/log4j2.xml .

Hope This Help!!

Answer 2

You have configured your webapp with

<context-param>
  <param-name>contextConfigLocation</param-name>
  <param-value>/WEB-INF/spring-mybatis.xml, /WEB-INF/log4j2.xml
  </param-value>
</context-param>

The contextConfigLocation parameter is how you tell Spring where to find its configuration files. Spring simply doesn't understand how to interpret the log4j configuration file you have passed it.

You need to follow the directions in the Log4j documentation to configure Log4j.