Question

我正在尝试部署一个在其WEB-INF/lib EJB jar文件中的Web项目。这个EJB在其构建路径中配置了对log4j（jar）的引用。当我使用Websphere Application Server 8.5.5中打包的Web项目部署.ear文件，并在其中启动servlet时，我收到此错误：

Error 500: javax.servlet.ServletException: SRVE0319E: For the [ServletPrueba] servlet, pe.com.projectavalon.Servlet.ServletPrueba servlet class was found, but a resource injection failure has occurred.

我检查了日志，似乎是对＃＆gt; log4j.jar＆＃34;的引用没有找到。

[22/02/14 1:41:42:402 COT] 0000007c InjectionBind E   CWNEN0030E: The @EJB factory encountered a problem getting the object instance pe.com.projectavalon.Servlet.ServletPrueba/prueba binding object.  The exception message was: The EJB reference in the SampleWeb.war module of the SampleEAR application could not be resolved; nested exception is: com.ibm.ejs.container.ContainerEJBException: Unable to initialize deferred EJB.; nested exception is: com.ibm.ejs.container.ContainerException: Failed to start the Test component in the SampleWeb.war module of the SampleEAR application. : An operation in the enterprise bean constructor failed. It is recommended that component initialization logic be placed in a PostConstruct method instead of the bean class no-arg constructor.; nested exception is: 
    java.lang.NoClassDefFoundError: org/apache/log4j/Logger
[22/02/14 1:41:42:404 COT] 0000007c webapp        E com.ibm.ws.webcontainer.webapp.WebApp logServletError SRVE0293E: [Servlet Error]-[ServletPrueba]: com.ibm.wsspi.injectionengine.InjectionException: Unable to obtain an instance for pe.com.projectavalon.Servlet.ServletPrueba/prueba: javax.ejb.EJBException: The EJB reference in the SampleWeb.war module of the SampleEAR application could not be resolved; nested exception is: com.ibm.ejs.container.ContainerEJBException: Unable to initialize deferred EJB.; nested exception is: com.ibm.ejs.container.ContainerException: Failed to start the Test component in the SampleWeb.war module of the SampleEAR application. : An operation in the enterprise bean constructor failed. It is recommended that component initialization logic be placed in a PostConstruct method instead of the bean class no-arg constructor.; nested exception is: 
    java.lang.NoClassDefFoundError: org/apache/log4j/Logger
    at com.ibm.wsspi.injectionengine.InjectionBinding.getInjectionObject(InjectionBinding.java:1123)
    at com.ibm.ws.ejb.injection.processor.EJBInjectionBinding.getInjectionObject(EJBInjectionBinding.java:1101)
    at com.ibm.wsspi.injectionengine.InjectionBinding.getInjectableObject(InjectionBinding.java:1032)
    at com.ibm.wsspi.injectionengine.InjectionTarget.inject(InjectionTarget.java:125)
    at com.ibm.ws.injectionengine.AbstractInjectionEngine.inject(AbstractInjectionEngine.java:1065)
    at com.ibm.ws.webcontainer.annotation.WASAnnotationHelper.inject(WASAnnotationHelper.java:380)
    at com.ibm.ws.webcontainer.servlet.ServletWrapperImpl.createTarget(ServletWrapperImpl.java:261)
    at com.ibm.ws.webcontainer.servlet.ServletWrapper$1.run(ServletWrapper.java:1486)
    at com.ibm.ws.security.util.AccessController.doPrivileged(AccessController.java:118)
    at com.ibm.ws.webcontainer.servlet.ServletWrapper.loadServlet(ServletWrapper.java:1472)
    at com.ibm.ws.webcontainer.servlet.ServletWrapper.handleRequest(ServletWrapper.java:620)
    at com.ibm.ws.webcontainer.servlet.ServletWrapper.handleRequest(ServletWrapper.java:458)
    at com.ibm.ws.webcontainer.servlet.ServletWrapperImpl.handleRequest(ServletWrapperImpl.java:178)
    at com.ibm.ws.webcontainer.filter.WebAppFilterManager.invokeFilters(WebAppFilterManager.java:1032)
    at com.ibm.ws.webcontainer.servlet.CacheServletWrapper.handleRequest(CacheServletWrapper.java:87)
    at com.ibm.ws.webcontainer.WebContainer.handleRequest(WebContainer.java:909)
    at com.ibm.ws.webcontainer.WSWebContainer.handleRequest(WSWebContainer.java:1662)
    at com.ibm.ws.webcontainer.channel.WCChannelLink.ready(WCChannelLink.java:200)
    at com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.handleDiscrimination(HttpInboundLink.java:459)
    at com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.handleNewRequest(HttpInboundLink.java:526)
    at com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.processRequest(HttpInboundLink.java:312)
    at com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.ready(HttpInboundLink.java:283)
    at com.ibm.ws.tcp.channel.impl.NewConnectionInitialReadCallback.sendToDiscriminators(NewConnectionInitialReadCallback.java:214)
    at com.ibm.ws.tcp.channel.impl.NewConnectionInitialReadCallback.complete(NewConnectionInitialReadCallback.java:113)
    at com.ibm.ws.tcp.channel.impl.AioReadCompletionListener.futureCompleted(AioReadCompletionListener.java:175)
    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:204)
    at com.ibm.io.async.ResultHandler.runEventProcessingLoop(ResultHandler.java:775)
    at com.ibm.io.async.ResultHandler$2.run(ResultHandler.java:905)
    at com.ibm.ws.util.ThreadPool$Worker.run(ThreadPool.java:1862)

当我检查ejb jar文件时，我发现log4j不在那里。如何在EJB Jar文件中包含log4j jar？

Answer 1

您是否已创建或已生成相应的META-INF/MANIFEST.MF？

在Manifest中，您可以指定应加载哪些罐子。为此，您应该将罐子直接放在耳朵里。

这有一个tutorial。

Answer 2

如果您在WEB-INF\lib目录下有log4j.jar文件，那就更好了。然后，它可以被web应用程序和ejb应用程序代码库使用。要执行此操作，请确保在您的ejb jar文件中META-INF/MANIFEST.MF文件指定Class-Path条目下的log4j jar文件路径。请记住，路径必须与您的ejb jar文件相关。

例如，在下面的结构中，您可以在MANIFEST.MF的Class-Path条目中指定为lib/log4j.jar

WAR
|
-- WEB-INF
    |
    -- web.xml
    |
    -- classes
    |
    -- lib
        |
        -- ejb jar
        |      |
        |      |-- META-INF
        |              |
        |              -- MANIFEST.MF
        | 
        |
        |
        |-- log4j.jar

（格式不是那么好，因为它是手工输入的）

Answer 3

在应用程序服务器中设置共享库（ENVIRONMENT＆gt; SHARED LIBRARIES）并将所有jar放入该路径中。您需要在Web项目中的Manifest.mf中提及您的罐子。清单文件的路径是WebContent＆gt; META-INF。

如何在EJB jar文件中包含jar依赖项？

3 个答案: