java - WebLogic 应用程序中没有任何组件

Question

我们正在将 J2EE 应用程序(JSP 和 EJB 2.0)从 WebLogic Service 8.1 升级到 12c(12.2.1.1.0)。我们正在构建一个展开的 EAR 到域目录中的一个目录。我们使用管理控制台部署应用程序，但它失败了 weblogic.management.DeploymentException: Application <appname> does not have any Components in it.

日志中出现以下内容:

####<Sep 26, 2016, 6:16:08,62 PM EDT> <Error> <Deployer> <CVG-000216B-010> <BaseServer> <[STANDBY] ExecuteThread: '11' for queue: 'weblogic.kernel.Default (self-tuning)'> <<WLS Kernel>> <> <9b2f9073-e2d2-4c02-915c-4e5de240621e-00000012> <1474928168062> <[severity-value: 8] [rid: 0] [partition-id: 0] [partition-name: DOMAIN] > <BEA-149265> <Failure occurred in the execution of deployment request with ID "25758041366812" for task "0" on [partition-name: DOMAIN]. Error is: "weblogic.management.DeploymentException: Application [MyApp] does not have any Components in it."
weblogic.management.DeploymentException: Application [MyApp] does not have any Components in it.
    at weblogic.jdbc.module.JDBCDeployment.createModule(JDBCDeployment.java:40)
    at weblogic.jdbc.module.JDBCDeployment.<init>(JDBCDeployment.java:25)
    at weblogic.jdbc.module.JDBCDeploymentFactory.createDeployment(JDBCDeploymentFactory.java:79)
    at weblogic.application.internal.DeploymentManagerImpl.createDeployment(DeploymentManagerImpl.java:186)
    at weblogic.application.internal.DeploymentManagerImpl.access$700(DeploymentManagerImpl.java:52)
    at weblogic.application.internal.DeploymentManagerImpl$DeploymentCreatorImpl.createDeployment(DeploymentManagerImpl.java:583)
    at weblogic.deploy.internal.targetserver.BasicDeployment.createDeployment(BasicDeployment.java:231)
    at weblogic.deploy.internal.targetserver.operations.ActivateOperation.createAndPrepareContainer(ActivateOperation.java:223)
    at weblogic.deploy.internal.targetserver.operations.ActivateOperation.doPrepare(ActivateOperation.java:103)
    at weblogic.deploy.internal.targetserver.operations.AbstractOperation.prepare(AbstractOperation.java:241)
    at weblogic.deploy.internal.targetserver.DeploymentManager.handleDeploymentPrepare(DeploymentManager.java:794)
    at weblogic.deploy.internal.targetserver.DeploymentManager.prepareDeploymentList(DeploymentManager.java:1340)
    at weblogic.deploy.internal.targetserver.DeploymentManager.handlePrepare(DeploymentManager.java:267)
    at weblogic.deploy.internal.targetserver.DeploymentServiceDispatcher.prepare(DeploymentServiceDispatcher.java:177)
    at weblogic.deploy.service.internal.targetserver.DeploymentReceiverCallbackDeliverer.doPrepareCallback(DeploymentReceiverCallbackDeliverer.java:186)
    at weblogic.deploy.service.internal.targetserver.DeploymentReceiverCallbackDeliverer.access$000(DeploymentReceiverCallbackDeliverer.java:14)
    at weblogic.deploy.service.internal.targetserver.DeploymentReceiverCallbackDeliverer$1.run(DeploymentReceiverCallbackDeliverer.java:47)
    at weblogic.work.SelfTuningWorkManagerImpl$WorkAdapterImpl.run(SelfTuningWorkManagerImpl.java:666)
    at weblogic.invocation.ComponentInvocationContextManager._runAs(ComponentInvocationContextManager.java:348)
    at weblogic.invocation.ComponentInvocationContextManager.runAs(ComponentInvocationContextManager.java:333)
    at weblogic.work.LivePartitionUtility.doRunWorkUnderContext(LivePartitionUtility.java:54)
    at weblogic.work.PartitionUtility.runWorkUnderContext(PartitionUtility.java:41)
    at weblogic.work.SelfTuningWorkManagerImpl.runWorkUnderContext(SelfTuningWorkManagerImpl.java:640)
    at weblogic.work.ExecuteThread.execute(ExecuteThread.java:406)
    at weblogic.work.ExecuteThread.run(ExecuteThread.java:346)
> 

该应用确实安装了 (State="Installed")，但无法启动。如果我们删除它并重新安装它，不会出现任何错误并且它的状态为“Active”，我们可以测试该应用程序。但是，当服务器重新启动时，上述异常出现在日志中并且应用程序处于“ADMIN”状态。它无法启动，所以我们删除它并通过管理控制台重新安装它，它运行允许我们测试它。

应用程序中确实有 J2EE 组件，至少是 Web 应用程序，因为这是我们正在测试的。一旦我们删除应用程序并从管理控制台重新安装它，我们就会在“部署摘要”页面的“模块和组件”部分看到 Web 应用程序、所有 EJB 和 EJB 模块。

我们查看了 WebLogic 代码并找到了错误产生的位置。似乎没有为应用程序生成组件 MBean。这是来自 weblogic.jdbc.module.JDBCDeployment类:

private static Module createModule(AppDeploymentMBean mbean) throws DeploymentException {
    ComponentMBean[] c = mbean.getAppMBean().getComponents();
    if ((c == null) || (c.length == 0)) {
        throw new DeploymentException("Application " + ApplicationVersionUtils.getDisplayName(mbean) + " does not have any Components in it.");
    }
    --[snipped]--

我们必须做什么才能部署展开的 EAR，以便 WebLogic 12c 在应用程序最初加载时识别组件？

在此先感谢您提供的任何帮助或见解。

Answer 1

感谢 Emmanuel Collin 的建议，通过重命名与应用程序同名的数据源解决了这个问题。

1. 删除申请
2. 删除有问题的数据源
3. 使用新名称重新创建数据源
4. 重新安装应用

应用程序安装无误，服务器启动后即可使用。