java – ‘org.apache.commons.logging.impl.Log4JLogger’无法找到

2023年11月3日 300次阅读

在我的
Java Web服务中,我正在尝试使用log4j将日志写入Windows事件查看器.我使用
Eclipse作为IDE使用Tomcat部署它.

这是我的log4j.properties：

log4j.rootLogger=DEBUG, CA, NTEventLog 


log4j.rootLogger=DEBUG, CA, NTEventLog 


#Console Appender 
log4j.appender.CA=org.apache.log4j.ConsoleAppender 
log4j.appender.CA.layout=org.apache.log4j.PatternLayout 
log4j.appender.CA.layout.ConversionPattern=%-4r [%t] %-5p %c %x - %m%n 

#File Appender 
log4j.appender.FA=org.apache.log4j.FileAppender 
log4j.appender.FA.File=sample.log 
log4j.appender.FA.layout=org.apache.log4j.PatternLayout 
log4j.appender.FA.layout.ConversionPattern=%-4r [%t] %-5p %c %x - %m%n

#Event Log Appender
log4j.appender.NTEventLog=org.apache.log4j.nt.NTEventLogAppender
log4j.appender.NTEventLog.source=ESB Web Services


# Set the logger level of File Appender to WARN 
log4j.appender.FA.Threshold = WARN

这是我的类路径：

<?xml version="1.0" encoding="UTF-8"?>
<classpath>
    <classpathentry kind="src" path="src"/>
    <classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/jre6">
        <attributes>
            <attribute name="owner.project.facets" value="java"/>
        </attributes>
    </classpathentry>
    <classpathentry kind="con" path="org.eclipse.jst.server.core.container/org.eclipse.jst.server.tomcat.runtimeTarget/Apache Tomcat v6.0">
        <attributes>
            <attribute name="owner.project.facets" value="jst.web"/>
        </attributes>
    </classpathentry>
    <classpathentry kind="con" path="org.eclipse.jst.j2ee.internal.web.container"/>
    <classpathentry kind="con" path="org.eclipse.jst.j2ee.internal.module.container"/>
    <classpathentry kind="lib" path="dom4j-1.6.1.jar">
        <attributes>
            <attribute name="org.eclipse.jst.component.dependency" value="/WEB-INF/lib"/>
        </attributes>
    </classpathentry>
    <classpathentry kind="lib" path="jide-oss-2.1.1.jar">
        <attributes>
            <attribute name="org.eclipse.jst.component.dependency" value="/WEB-INF/lib"/>
        </attributes>
    </classpathentry>
    <classpathentry kind="lib" path="jtds-1.2.6.jar">
        <attributes>
            <attribute name="org.eclipse.jst.component.dependency" value="/WEB-INF/lib"/>
        </attributes>
    </classpathentry>
    <classpathentry kind="lib" path="poi-3.9-20121203.jar">
        <attributes>
            <attribute name="org.eclipse.jst.component.dependency" value="/WEB-INF/lib"/>
        </attributes>
    </classpathentry>
    <classpathentry kind="lib" path="poi-ooxml-3.9-20121203.jar">
        <attributes>
            <attribute name="org.eclipse.jst.component.dependency" value="/WEB-INF/lib"/>
        </attributes>
    </classpathentry>
    <classpathentry kind="lib" path="poi-ooxml-schemas-3.9-20121203.jar">
        <attributes>
            <attribute name="org.eclipse.jst.component.dependency" value="/WEB-INF/lib"/>
        </attributes>
    </classpathentry>
    <classpathentry kind="lib" path="stax-api-1.0.1.jar">
        <attributes>
            <attribute name="org.eclipse.jst.component.dependency" value="/WEB-INF/lib"/>
        </attributes>
    </classpathentry>
    <classpathentry kind="lib" path="xmlbeans-2.3.0.jar">
        <attributes>
            <attribute name="org.eclipse.jst.component.dependency" value="/WEB-INF/lib"/>
        </attributes>
    </classpathentry>
    <classpathentry kind="lib" path="NTEventLogAppender.amd64.dll">
        <attributes>
            <attribute name="org.eclipse.jst.component.dependency" value="/WEB-INF/lib"/>
        </attributes>
    </classpathentry>
    <classpathentry kind="lib" path="NTEventLogAppender.dll">
        <attributes>
            <attribute name="org.eclipse.jst.component.dependency" value="/WEB-INF/lib"/>
        </attributes>
    </classpathentry>
    <classpathentry kind="lib" path="log4j-1.2.17.jar">
        <attributes>
            <attribute name="org.eclipse.jst.component.dependency" value="/WEB-INF/lib"/>
        </attributes>
    </classpathentry>
    <classpathentry kind="lib" path="commons-logging-1.1.2.jar">
        <attributes>
            <attribute name="org.eclipse.jst.component.dependency" value="/WEB-INF/lib"/>
        </attributes>
    </classpathentry>
    <classpathentry kind="lib" path="commons-logging-1.1.2-javadoc.jar">
        <attributes>
            <attribute name="org.eclipse.jst.component.dependency" value="/WEB-INF/lib"/>
        </attributes>
    </classpathentry>
    <classpathentry kind="lib" path="commons-logging-1.1.2-sources.jar">
        <attributes>
            <attribute name="org.eclipse.jst.component.dependency" value="/WEB-INF/lib"/>
        </attributes>
    </classpathentry>
    <classpathentry kind="lib" path="commons-logging-1.1.2-test-sources.jar">
        <attributes>
            <attribute name="org.eclipse.jst.component.dependency" value="/WEB-INF/lib"/>
        </attributes>
    </classpathentry>
    <classpathentry kind="lib" path="commons-logging-1.1.2-tests.jar">
        <attributes>
            <attribute name="org.eclipse.jst.component.dependency" value="/WEB-INF/lib"/>
        </attributes>
    </classpathentry>
    <classpathentry kind="lib" path="commons-logging-adapters-1.1.2.jar">
        <attributes>
            <attribute name="org.eclipse.jst.component.dependency" value="/WEB-INF/lib"/>
        </attributes>
    </classpathentry>
    <classpathentry kind="lib" path="commons-logging-api-1.1.2.jar">
        <attributes>
            <attribute name="org.eclipse.jst.component.dependency" value="/WEB-INF/lib"/>
        </attributes>
    </classpathentry>
    <classpathentry kind="lib" path="commons-logging-tests.jar">
        <attributes>
            <attribute name="org.eclipse.jst.component.dependency" value="/WEB-INF/lib"/>
        </attributes>
    </classpathentry>
    <classpathentry kind="output" path="build/classes"/>
</classpath>

一旦我在tomcat上部署代码如下

异常发生：

org.apache.commons.logging.LogConfigurationException: User-specified log class 'org.apache.commons.logging.impl.Log4JLogger' cannot be found or is not useable.
    at org.apache.commons.logging.impl.LogFactoryImpl.discoverLogImplementation(LogFactoryImpl.java:874)
    at org.apache.commons.logging.impl.LogFactoryImpl.newInstance(LogFactoryImpl.java:604)
    at org.apache.commons.logging.impl.LogFactoryImpl.getInstance(LogFactoryImpl.java:336)
    at org.apache.commons.logging.impl.LogFactoryImpl.getInstance(LogFactoryImpl.java:310)
    at org.apache.commons.logging.LogFactory.getLog(LogFactory.java:685)
    at org.apache.axis2.deployment.DeploymentEngine.<clinit>(DeploymentEngine.java:76)
    at org.apache.axis2.transport.http.AxisServlet.initConfigContext(AxisServlet.java:584)
    at org.apache.axis2.transport.http.AxisServlet.init(AxisServlet.java:454)
    at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1173)
    at org.apache.catalina.core.StandardWrapper.allocate(StandardWrapper.java:809)
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:129)
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:298)
    at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:852)
    at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:588)
    at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489)
    at java.lang.Thread.run(Unknown Source)

最佳答案删除NTEventLog的所有引用,它将工作.如果取消注释此appender,如果源是有效名称,则可能有效.

#log4j.rootLogger=DEBUG,CA,NTEventLog 
log4j.rootLogger=DEBUG,CA        

#Console Appender 
log4j.appender.CA=org.apache.log4j.ConsoleAppender 
log4j.appender.CA.layout=org.apache.log4j.PatternLayout 
log4j.appender.CA.layout.ConversionPattern=%-4r [%t] %-5p %c %x - %m%n 

#File Appender 
log4j.appender.FA=org.apache.log4j.FileAppender 
log4j.appender.FA.File=sample.log 
log4j.appender.FA.layout=org.apache.log4j.PatternLayout 
log4j.appender.FA.layout.ConversionPattern=%-4r [%t] %-5p %c %x - %m%n

#Event Log Appender
#log4j.appender.NTEventLog=org.apache.log4j.nt.NTEventLogAppender
#log4j.appender.NTEventLog.layout=org.apache.log4j.PatternLayout
#log4j.appender.NTEventLog.layout.ConversionPattern=%m%n
#log4j.appender.NTEventLog.source=ESBWebServices


# Set the logger level of File Appender to WARN 
log4j.appender.FA.Threshold = WARN

Do not forget to place NTEventLogAppender.dll, NTEventLogAppender.amd64.dll, NTEventLogAppender.ia64.dll or NTEventLogAppender.x86.dll as appropriate in a directory that is on the PATH of the Windows system. Otherwise, you will get a java.lang.UnsatisfiedLinkError.