OpenJPA Webspere 7 Log4j配置 [英] OpenJPA Webspere 7 Log4j configuration

问题描述

伙计们，我正在努力解决这个问题。我正在尝试从systemout重定向日志记录。
到log4j rollingappender文件没有成功，下面是我的persistent.xml示例

Guys I’m struggling with this one. I am trying to redirect logging from systemout. to a log4j rollingappender file with no success, below is a sample of my persistent.xml

<?xml version="1.0" encoding="UTF-8"?>
<persistence xmlns="http://java.sun.com/xml/ns/persistence"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://java.sun.com/xml/ns/persistence
    http://java.sun.com/xml/ns/persistence/persistence_1_0.xsd" version="1.0">
    <persistence-unit name="R_TEST" transaction-type="RESOURCE_LOCAL">
        <provider>
    com.ibm.websphere.persistence.PersistenceProviderImpl
        </provider>
       <non-jta-data-source>jdbc/TESTDB</non-jta-data-source>
         <class>com.ra.WSProcess</class>
    <property name="openjpa.jdbc.Schema" value="TEST" />
            <property name="openjpa.Log" value="log4j"/>    
        </properties>
    </persistence-unit>

我在添加此文件后立即收到以下错误：上面的文件。我已经尝试将这两个文件（commons-logging-1.1.jar，log4j-1.2.6.jar）复制到WEB_INF / lib中，但没有解决问题。在网上似乎没有太多关于如何让这个工作的原样。有任何想法吗 ？

I get the following error as soon as I add this: to the file above. I have tried copying these two files (commons-logging-1.1.jar, log4j-1.2.6.jar) into WEB_INF/lib but didnt fx the problem. Doesnt seem to be much on the web on how to get this working as is. Any ideas ?

请注意，我无法更改Websphere中的类加载策略，因为这会阻止我的应用程序运行

Please note that I can not change the classloading policy in Websphere as this would stop my app from working

 java.lang.NoClassDefFoundError
    java.lang.NoClassDefFoundError: org.apache.log4j.Priority
        at java.lang.J9VMInternals.verifyImpl(Native Method)
        at java.lang.J9VMInternals.verify(J9VMInternals.java:72)
        at java.lang.J9VMInternals.initialize(J9VMInternals.java:134)
        at org.apache.openjpa.lib.log.Log4JLogFactory.newLogAdapter(Log4JLogFactory.java:33)
        at org.apache.openjpa.lib.log.LogFactoryAdapter.getLog(LogFactoryAdapter.java:40)
        at org.apache.openjpa.lib.conf.ConfigurationImpl.getLog(ConfigurationImpl.java:223)
        at org.apache.openjpa.conf.OpenJPAConfigurationImpl.getConfigurationLog(OpenJPAConfigurationImpl.java:1445)
        at org.apache.openjpa.persistence.PersistenceProductDerivation$ConfigurationProviderImpl.setInto(PersistenceProductDerivation.java:479)
        at com.ibm.ws.persistence.jdbc.kernel.WsJpaJDBCBrokerFactory.newInstance(WsJpaJDBCBrokerFactory.java:121)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:45)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:37)
        at java.lang.reflect.Method.invoke(Method.java:599)
        at org.apache.openjpa.kernel.Bootstrap.invokeFactory(Bootstrap.java:124)
        at org.apache.openjpa.kernel.Bootstrap.newBrokerFactory(Bootstrap.java:62)
        at org.apache.openjpa.persistence.PersistenceProviderImpl.getBrokerFactory(PersistenceProviderImpl.java:102)
        at org.apache.openjpa.persistence.PersistenceProviderImpl.createEntityManagerFactory(PersistenceProviderImpl.java:81)
        at com.ibm.websphere.persistence.PersistenceProviderImpl.createEntityManagerFactory(PersistenceProviderImpl.java:71)
        at com.ibm.websphere.persistence.PersistenceProviderImpl.createEntityManagerFactory(PersistenceProviderImpl.java:41)
        at org.apache.openjpa.persistence.PersistenceProviderImpl.createEntityManagerFactory(PersistenceProviderImpl.java:109)
        at org.apache.openjpa.persistence.PersistenceProviderImpl.createEntityManagerFactory(PersistenceProviderImpl.java:53)
        at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:110)
        at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:83)
        at com.ra.WSProcess.EntityManagerHelper.<clinit>(EntityManagerHelper.java:20)
        at java.lang.J9VMInternals.initializeImpl(Native Method)
        at java.lang.J9VMInternals.initialize(J9VMInternals.java:200)
        at com.ra.WSProcess.process(WSProcess.java:129)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:45)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:37)
        at java.lang.reflect.Method.invoke(Method.java:599)
        at org.apache.axis2.jaxws.server.dispatcher.JavaDispatcher.invokeTargetOperation(JavaDispatcher.java:76)
        at org.apache.axis2.jaxws.server.dispatcher.JavaBeanDispatcher.invoke(JavaBeanDispatcher.java:96)
        at org.apache.axis2.jaxws.server.EndpointController.invoke(EndpointController.java:108)
        at org.apache.axis2.jaxws.server.JAXWSMessageReceiver.receive(JAXWSMessageReceiver.java:159)
        at org.apache.axis2.engine.AxisEngine.receive(AxisEngine.java:182)
        at org.apache.axis2.transport.http.HTTPTransportUtils.processHTTPPostRequest(HTTPTransportUtils.java:275)
        at com.ibm.ws.websvcs.transport.http.WASAxis2Servlet.doPost(WASAxis2Servlet.java:1330)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:738)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:831)
        at com.ibm.ws.webcontainer.servlet.ServletWrapper.service(ServletWrapper.java:1443)
        at com.ibm.ws.webcontainer.servlet.ServletWrapper.handleRequest(ServletWrapper.java:790)
        at com.ibm.ws.webcontainer.servlet.ServletWrapper.handleRequest(ServletWrapper.java:443)
        at com.ibm.ws.webcontainer.servlet.ServletWrapperImpl.handleRequest(ServletWrapperImpl.java:175)
        at com.ibm.ws.webcontainer.servlet.CacheServletWrapper.handleRequest(CacheServletWrapper.java:91)
        at com.ibm.ws.webcontainer.WebContainer.handleRequest(WebContainer.java:859)
        at com.ibm.ws.webcontainer.WSWebContainer.handleRequest(WSWebContainer.java:1557)
        at com.ibm.ws.webcontainer.channel.WCChannelLink.ready(WCChannelLink.java:173)
        at com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.handleDiscrimination(HttpInboundLink.java:455)
        at com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.handleNewInformation(HttpInboundLink.java:384)
        at com.ibm.ws.http.channel.inbound.impl.HttpICLReadCallback.complete(HttpICLReadCallback.java:83)
        at com.ibm.ws.tcp.channel.impl.AioReadCompletionListener.futureCompleted(AioReadCompletionListener.java:165)
        at com.ibm.io.async.AbstractAsyncFuture.invokeCallback(AbstractAsyncFuture.java:217)
        at com.ibm.io.async.AsyncChannelFuture.fireCompletionActions(AsyncChannelFuture.java:161)
        at com.ibm.io.async.AsyncFuture.completed(AsyncFuture.java:138)
        at com.ibm.io.async.ResultHandler.complete(ResultHandler.java:202)
        at com.ibm.io.async.ResultHandler.runEventProcessingLoop(ResultHandler.java:766)
        at com.ibm.io.async.ResultHandler$2.run(ResultHandler.java:896)
        at com.ibm.ws.util.ThreadPool$Worker.run(ThreadPool.java:1527)
    Caused by: java.lang.ClassNotFoundException: org.apache.log4j.Priority
        at org.eclipse.osgi.framework.internal.core.BundleLoader.findClass(BundleLoader.java:402)
        at org.eclipse.osgi.framework.internal.core.BundleLoader.findClass(BundleLoader.java:347)

推荐答案

openjpa.Log 属性值 log4j 无法使用内置的IBM PersistenceProviderImpl，因为内置的JPA提供程序没有对应用程序JAR的类加载器可见性，并且没有类加载器配置选项可以使其工作。唯一的选择是自己下载OpenJPA和将其配置为第三方持久性提供程序。

The openjpa.Log property value of log4j cannot work with the built-in IBM PersistenceProviderImpl because the built-in JPA provider does not have class loader visibility to your application JARs, and there is no class loader configuration option to make that work. The only option is to download OpenJPA yourself and configure it as a third-party persistence provider.

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