【发布时间】：2015-10-23 06:45:02
【问题描述】：
EclipseLink 2.6.1（最终版）在 GlassFish Server 4.1 上部署 Java EE 应用程序时引发以下异常。这在从 2.6.0 升级之前没有发生过。
Warning: java.lang.NullPointerException
at org.eclipse.persistence.platform.server.ServerPlatformUtils.createServerPlatform(ServerPlatformUtils.java:101)
at org.eclipse.persistence.sessions.factories.SessionManager.init(SessionManager.java:77)
at org.eclipse.persistence.sessions.factories.SessionManager.<clinit>(SessionManager.java:71)
at org.eclipse.persistence.internal.jpa.EntityManagerSetupImpl.addSessionToGlobalSessionManager(EntityManagerSetupImpl.java:907)
at org.eclipse.persistence.internal.jpa.EntityManagerSetupImpl.initSession(EntityManagerSetupImpl.java:2676)
at org.eclipse.persistence.internal.jpa.EntityManagerSetupImpl.deploy(EntityManagerSetupImpl.java:675)
at org.eclipse.persistence.internal.jpa.EntityManagerFactoryDelegate.getAbstractSession(EntityManagerFactoryDelegate.java:205)
at org.eclipse.persistence.internal.jpa.EntityManagerFactoryDelegate.createEntityManagerImpl(EntityManagerFactoryDelegate.java:305)
at org.eclipse.persistence.internal.jpa.EntityManagerFactoryImpl.createEntityManagerImpl(EntityManagerFactoryImpl.java:337)
at org.eclipse.persistence.internal.jpa.EntityManagerFactoryImpl.createEntityManager(EntityManagerFactoryImpl.java:303)
at org.glassfish.persistence.jpa.JPADeployer$2.visitPUD(JPADeployer.java:451)
at org.glassfish.persistence.jpa.JPADeployer$PersistenceUnitDescriptorIterator.iteratePUDs(JPADeployer.java:510)
at org.glassfish.persistence.jpa.JPADeployer.iterateInitializedPUsAtApplicationPrepare(JPADeployer.java:492)
at org.glassfish.persistence.jpa.JPADeployer.event(JPADeployer.java:395)
at org.glassfish.kernel.event.EventsImpl.send(EventsImpl.java:131)
at com.sun.enterprise.v3.server.ApplicationLifecycle.deploy(ApplicationLifecycle.java:487)
at com.sun.enterprise.v3.server.ApplicationLifecycle.deploy(ApplicationLifecycle.java:219)
at org.glassfish.deployment.admin.DeployCommand.execute(DeployCommand.java:491)
at com.sun.enterprise.v3.admin.CommandRunnerImpl$2$1.run(CommandRunnerImpl.java:539)
at com.sun.enterprise.v3.admin.CommandRunnerImpl$2$1.run(CommandRunnerImpl.java:535)
at java.security.AccessController.doPrivileged(Native Method)
at javax.security.auth.Subject.doAs(Subject.java:360)
at com.sun.enterprise.v3.admin.CommandRunnerImpl$2.execute(CommandRunnerImpl.java:534)
at com.sun.enterprise.v3.admin.CommandRunnerImpl$3.run(CommandRunnerImpl.java:565)
at com.sun.enterprise.v3.admin.CommandRunnerImpl$3.run(CommandRunnerImpl.java:557)
at java.security.AccessController.doPrivileged(Native Method)
at javax.security.auth.Subject.doAs(Subject.java:360)
at com.sun.enterprise.v3.admin.CommandRunnerImpl.doCommand(CommandRunnerImpl.java:556)
at com.sun.enterprise.v3.admin.CommandRunnerImpl.doCommand(CommandRunnerImpl.java:1464)
at com.sun.enterprise.v3.admin.CommandRunnerImpl.access$1300(CommandRunnerImpl.java:109)
at com.sun.enterprise.v3.admin.CommandRunnerImpl$ExecutionContext.execute(CommandRunnerImpl.java:1846)
at com.sun.enterprise.v3.admin.CommandRunnerImpl$ExecutionContext.execute(CommandRunnerImpl.java:1722)
at com.sun.enterprise.v3.admin.AdminAdapter.doCommand(AdminAdapter.java:534)
at com.sun.enterprise.v3.admin.AdminAdapter.onMissingResource(AdminAdapter.java:224)
at org.glassfish.grizzly.http.server.StaticHttpHandlerBase.service(StaticHttpHandlerBase.java:189)
at com.sun.enterprise.v3.services.impl.ContainerMapper$HttpHandlerCallable.call(ContainerMapper.java:459)
at com.sun.enterprise.v3.services.impl.ContainerMapper.service(ContainerMapper.java:167)
at org.glassfish.grizzly.http.server.HttpHandler.runService(HttpHandler.java:201)
at org.glassfish.grizzly.http.server.HttpHandler.doHandle(HttpHandler.java:175)
at org.glassfish.grizzly.http.server.HttpServerFilter.handleRead(HttpServerFilter.java:235)
at org.glassfish.grizzly.filterchain.ExecutorResolver$9.execute(ExecutorResolver.java:119)
at org.glassfish.grizzly.filterchain.DefaultFilterChain.executeFilter(DefaultFilterChain.java:284)
at org.glassfish.grizzly.filterchain.DefaultFilterChain.executeChainPart(DefaultFilterChain.java:201)
at org.glassfish.grizzly.filterchain.DefaultFilterChain.execute(DefaultFilterChain.java:133)
at org.glassfish.grizzly.filterchain.DefaultFilterChain.process(DefaultFilterChain.java:112)
at org.glassfish.grizzly.ProcessorExecutor.execute(ProcessorExecutor.java:77)
at org.glassfish.grizzly.nio.transport.TCPNIOTransport.fireIOEvent(TCPNIOTransport.java:561)
at org.glassfish.grizzly.strategies.AbstractIOStrategy.fireIOEvent(AbstractIOStrategy.java:112)
at org.glassfish.grizzly.strategies.WorkerThreadIOStrategy.run0(WorkerThreadIOStrategy.java:117)
at org.glassfish.grizzly.strategies.WorkerThreadIOStrategy.access$100(WorkerThreadIOStrategy.java:56)
at org.glassfish.grizzly.strategies.WorkerThreadIOStrategy$WorkerThreadRunnable.run(WorkerThreadIOStrategy.java:137)
at org.glassfish.grizzly.threadpool.AbstractThreadPool$Worker.doWork(AbstractThreadPool.java:565)
at org.glassfish.grizzly.threadpool.AbstractThreadPool$Worker.run(AbstractThreadPool.java:545)
at java.lang.Thread.run(Thread.java:745)
虽然是java.lang.NullPointerException，但LOG的级别是Warning。
org.eclipse.persistence.sessions.factories.SessionManager#init() 定义如下（虽然 grepcode 显示 RC1）。
74 private static void init() {
75 String platformClass = ServerPlatformUtils.detectServerPlatform(null);
76 try {
77 detectedPlatform = ServerPlatformUtils.createServerPlatform(null, platformClass, SessionManager.class.getClassLoader());
78 } catch (NullPointerException npe) {
79 //some platforms may not be handling 'null' session well,
80 //so be defensive here and only log throwable here
81 detectedPlatform = null;
82 LOG.logThrowable(SessionLog.WARNING, AbstractSessionLog.CONNECTION, npe);
83 }
84 supportPartitions = detectedPlatform != null && detectedPlatform.usesPartitions();
85 if (supportPartitions) {
86 managers = new ConcurrentHashMap<String, SessionManager>(4, 0.9f, 1);
87 SessionManager sm = initializeManager();
88 manager = sm;
89 managers.put(sm.context, sm);
90 } else {
91 manager = initializeManager();
92 }
93 }
如果platformClass 是null，则createServerPlatform(DatabaseSession session, String platformClass, ClassLoader loader) 会抛出java.lang.NullPointerException。
97 public static ServerPlatform createServerPlatform(DatabaseSession session, String platformClass, ClassLoader loader) {
98 if (platformClass == null) {
99 throw new NullPointerException();
100 }
//...
}
根据代码显示是正常的。是吗？
【问题讨论】：
-
您如何将 Eclipselink 部署到 Glassfish？
-
像往常一样使用 IDE，在这种情况下，NetBeans 拥有一个称为 Apache Ant（我不使用 Apache Maven）的部署器，它执行部署应用程序的任务。
-
您知道 Glassfish 已经实现了不同版本的 eclipselink（我认为是 2.5.2）吗？您是否将 glassfish 实现更改为与 2.6.1 一起使用？如果您将 jar 添加到您在 glassfish 上部署的战争中，我想可能存在版本冲突。
-
没有版本冲突。 GlassFish 提供的默认版本已替换为较新的版本 (2.6.1)。
标签： jakarta-ee glassfish eclipselink java-ee-7 glassfish-4.1