错误javax.naming.NamingException
错误javax.naming.NamingException
提问于 2011-03-09 15:03:37
当我使用NetBean6.9运行这个项目时，我使用的是j2ee。我遇到了这个问题
javax.naming.NamingException: Lookup failed for 'java:comp/env' in SerialContext [Root exception is javax.naming.NamingException: Invocation exception: Got null ComponentInvocation ]
at com.sun.enterprise.naming.impl.SerialContext.lookup(SerialContext.java:442)
at javax.naming.InitialContext.lookup(InitialContext.java:392)
at javax.naming.InitialContext.lookup(InitialContext.java:392)
at com.askad.ap.util.ListReader.readPath(ListReader.java:34)
at com.askad.ap.util.ListReader.<init>(ListReader.java:29)
at com.askad.ap.facade.UserTransactionFacade.<init>(UserTransactionFacade.java:44)
at com.askad.ap.facade.__EJB31_Generated__UserTransactionFacade__Intf____Bean__.<init>(Unknown Source)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
at java.lang.reflect.Constructor.newInstance(Constructor.java:513)
at java.lang.Class.newInstance0(Class.java:355)
at java.lang.Class.newInstance(Class.java:308)
at com.sun.ejb.containers.BaseContainer.instantiateOptionalEJBLocalBusinessObjectImpl(BaseContainer.java:3801)
at com.sun.ejb.containers.StatelessSessionContainer.initializeHome(StatelessSessionContainer.java:248)
at com.sun.ejb.containers.ContainerFactoryImpl.createContainer(ContainerFactoryImpl.java:161)
at org.glassfish.ejb.startup.EjbApplication.loadContainers(EjbApplication.java:207)
at org.glassfish.ejb.startup.EjbDeployer.load(EjbDeployer.java:197)
at org.glassfish.ejb.startup.EjbDeployer.load(EjbDeployer.java:63)
at org.glassfish.internal.data.ModuleInfo.load(ModuleInfo.java:175)
at org.glassfish.internal.data.ApplicationInfo.load(ApplicationInfo.java:216)
at com.sun.enterprise.v3.server.ApplicationLifecycle.deploy(ApplicationLifecycle.java:338)
at com.sun.enterprise.v3.server.ApplicationLifecycle.deploy(ApplicationLifecycle.java:183)
at org.glassfish.deployment.admin.DeployCommand.execute(DeployCommand.java:272)
at com.sun.enterprise.v3.admin.CommandRunnerImpl$1.execute(CommandRunnerImpl.java:305)
at com.sun.enterprise.v3.admin.CommandRunnerImpl.doCommand(CommandRunnerImpl.java:320)
at com.sun.enterprise.v3.admin.CommandRunnerImpl.doCommand(CommandRunnerImpl.java:1176)
at com.sun.enterprise.v3.admin.CommandRunnerImpl.access$900(CommandRunnerImpl.java:83)
at com.sun.enterprise.v3.admin.CommandRunnerImpl$ExecutionContext.execute(CommandRunnerImpl.java:1235)
at com.sun.enterprise.v3.admin.CommandRunnerImpl$ExecutionContext.execute(CommandRunnerImpl.java:1224)
at com.sun.enterprise.v3.admin.AdminAdapter.doCommand(AdminAdapter.java:365)
at com.sun.enterprise.v3.admin.AdminAdapter.service(AdminAdapter.java:204)
at com.sun.grizzly.tcp.http11.GrizzlyAdapter.service(GrizzlyAdapter.java:166)
at com.sun.enterprise.v3.server.HK2Dispatcher.dispath(HK2Dispatcher.java:100)
at com.sun.enterprise.v3.services.impl.ContainerMapper.service(ContainerMapper.java:245)
at com.sun.grizzly.http.ProcessorTask.invokeAdapter(ProcessorTask.java:791)
at com.sun.grizzly.http.ProcessorTask.doProcess(ProcessorTask.java:693)
at com.sun.grizzly.http.ProcessorTask.process(ProcessorTask.java:954)
at com.sun.grizzly.http.DefaultProtocolFilter.execute(DefaultProtocolFilter.java:170)
at com.sun.grizzly.DefaultProtocolChain.executeProtocolFilter(DefaultProtocolChain.java:135)
at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:102)
at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:88)
at com.sun.grizzly.http.HttpProtocolChain.execute(HttpProtocolChain.java:76)
at com.sun.grizzly.ProtocolChainContextTask.doCall(ProtocolChainContextTask.java:53)
at com.sun.grizzly.SelectionKeyContextTask.call(SelectionKeyContextTask.java:57)
at com.sun.grizzly.ContextTask.run(ContextTask.java:69)
at com.sun.grizzly.util.AbstractThreadPool$Worker.doWork(AbstractThreadPool.java:330)
at com.sun.grizzly.util.AbstractThreadPool$Worker.run(AbstractThreadPool.java:309)
at java.lang.Thread.run(Thread.java:662)
Caused by: javax.naming.NamingException: Invocation exception: Got null ComponentInvocation
at com.sun.enterprise.naming.impl.GlassfishNamingManagerImpl.getComponentId(GlassfishNamingManagerImpl.java:773)
at com.sun.enterprise.naming.impl.GlassfishNamingManagerImpl.lookup(GlassfishNamingManagerImpl.java:655)
at com.sun.enterprise.naming.impl.JavaURLContext.lookup(JavaURLContext.java:156)
at com.sun.enterprise.naming.impl.SerialContext.lookup(SerialContext.java:428)
... 48 more当我点击时
com.askad.ap.util.ListReader.readPath(ListReader.java:34)NetBean突出显示此行
Context env = (Context) new InitialContext().lookup("java:comp/env");有人知道如何解决这个问题吗?是什么导致了这个问题？Thx b4
回答 3
Stack Overflow用户
发布于 2011-04-06 03:42:25
从堆栈跟踪可以看出，您正在使用Glassfish作为容器。在context.xml中，您应该定义一个或多个资源。假设您有一个名为jdbc/msql的数据库。然后使用java:comp/env/jdbc/msql引用它。看起来您在那行有问题的代码中引用了一些空资源。Hth。
Stack Overflow用户
发布于 2012-05-16 05:48:22
我在尝试从无法访问java:comp/env名称空间的线程访问该名称空间时看到过这种异常。我通过使用全局标识符(例如，只使用"jdbc/msql“而不是"java:comp/env/jdbc/msql")解决了这个问题。
你也可以在可能的情况下获取对象一次(例如，通过@Resource注入)，然后从任何线程引用它。
Stack Overflow用户
发布于 2013-02-20 21:37:32
如果您在glassfish中遇到此错误，请尝试查找文件sun-web.xml。如果此文件丢失，则可能会发生这种情况。
页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/5242423
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