我的一些REST应用程序遇到问题，当我在其weblogic.xml配置文件中引用Jax-rs时，其中的一些崩溃了，而其中的一些则没有。这真的很奇怪。
在Weblogic.xml文件中，我有这个：
<library-ref>
<library-name>jax-rs</library-name>
<specification-version>2.0</specification-version>
</library-ref>
Jax-RS库安装在我的weblogic中。
引用了此内容后，当我尝试在浏览器上运行GET请求时，看到“请求失败”消息。
在日志中，我看到了：
####<Dec 17, 2018 7:24:30 PM WAT> <Error> <HTTP> <Redsvr.africaprudentialregistrars.com> <Main_Server> <[ACTIVE] ExecuteThread: '100' for queue: 'weblogic.kernel.Default (self-tuning)'> <<WLS Kernel>> <> <> <1545071070420> <BEA-101017> <[ServletContext@614693438[app:eurytus-engine-bonus-req module:eurytus-engine-bonus-req.war path:null spec-version:3.0]] Root cause of ServletException.
A MultiException has 1 exceptions. They are:
1. java.lang.NullPointerException
at org.jvnet.hk2.internal.Collector.throwIfErrors(Collector.java:88)
at org.jvnet.hk2.internal.Utilities.justInject(Utilities.java:864)
at org.jvnet.hk2.internal.ServiceLocatorImpl.inject(ServiceLocatorImpl.java:859)
at org.jvnet.hk2.internal.ServiceLocatorImpl.createAndInitialize(ServiceLocatorImpl.java:934)
at org.jvnet.hk2.internal.ServiceLocatorImpl.createAndInitialize(ServiceLocatorImpl.java:925)
at org.glassfish.jersey.internal.inject.Injections.getOrCreate(Injections.java:174)
at org.glassfish.jersey.server.model.MethodHandler$ClassBasedMethodHandler.getInstance(MethodHandler.java:185)
at org.glassfish.jersey.server.internal.routing.PushMethodHandlerRouter.apply(PushMethodHandlerRouter.java:103)
at org.glassfish.jersey.server.internal.routing.RoutingStage._apply(RoutingStage.java:128)
at org.glassfish.jersey.server.internal.routing.RoutingStage._apply(RoutingStage.java:131)
at org.glassfish.jersey.server.internal.routing.RoutingStage._apply(RoutingStage.java:131)
at org.glassfish.jersey.server.internal.routing.RoutingStage._apply(RoutingStage.java:131)
at org.glassfish.jersey.server.internal.routing.RoutingStage.apply(RoutingStage.java:110)
at org.glassfish.jersey.server.internal.routing.RoutingStage.apply(RoutingStage.java:65)
at org.glassfish.jersey.process.internal.Stages.process(Stages.java:197)
at org.glassfish.jersey.server.ServerRuntime$1.run(ServerRuntime.java:250)
at org.glassfish.jersey.internal.Errors$1.call(Errors.java:271)
at org.glassfish.jersey.internal.Errors$1.call(Errors.java:267)
at org.glassfish.jersey.internal.Errors.process(Errors.java:315)
at org.glassfish.jersey.internal.Errors.process(Errors.java:297)
at org.glassfish.jersey.internal.Errors.process(Errors.java:267)
at org.glassfish.jersey.process.internal.RequestScope.runInScope(RequestScope.java:318)
at org.glassfish.jersey.server.ServerRuntime.process(ServerRuntime.java:236)
at org.glassfish.jersey.server.ApplicationHandler.handle(ApplicationHandler.java:1010)
at org.glassfish.jersey.servlet.WebComponent.service(WebComponent.java:373)
at org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:382)
at org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:345)
at org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:220)
at weblogic.servlet.internal.StubSecurityHelper$ServletServiceAction.run(StubSecurityHelper.java:280)
at weblogic.servlet.internal.StubSecurityHelper$ServletServiceAction.run(StubSecurityHelper.java:254)
at weblogic.servlet.internal.StubSecurityHelper.invokeServlet(StubSecurityHelper.java:136)
at weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:346)
at weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:243)
at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.wrapRun(WebAppServletContext.java:3432)
at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.run(WebAppServletContext.java:3402)
at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:321)
at weblogic.security.service.SecurityManager.runAs(SecurityManager.java:120)
at weblogic.servlet.provider.WlsSubjectHandle.run(WlsSubjectHandle.java:57)
at weblogic.servlet.internal.WebAppServletContext.doSecuredExecute(WebAppServletContext.java:2285)
at weblogic.servlet.internal.WebAppServletContext.securedExecute(WebAppServletContext.java:2201)
at weblogic.servlet.internal.WebAppServletContext.execute(WebAppServletContext.java:2179)
at weblogic.servlet.internal.ServletRequestImpl.run(ServletRequestImpl.java:1572)
at weblogic.servlet.provider.ContainerSupportProviderImpl$WlsRequestExecutor.run(ContainerSupportProviderImpl.java:255)
at weblogic.work.ExecuteThread.execute(ExecuteThread.java:311)
at weblogic.work.ExecuteThread.run(ExecuteThread.java:263)
Caused By: java.lang.NullPointerException
at org.jvnet.hk2.internal.Utilities.hasInjectAnnotation(Utilities.java:1478)
at org.jvnet.hk2.internal.Utilities.findInitializerMethods(Utilities.java:1419)
at org.jvnet.hk2.internal.DefaultClassAnalyzer.getInitializerMethods(DefaultClassAnalyzer.java:102)
at org.glassfish.jersey.internal.inject.JerseyClassAnalyzer.getInitializerMethods(JerseyClassAnalyzer.java:239)
at org.jvnet.hk2.internal.Utilities.getInitMethods(Utilities.java:246)
at org.jvnet.hk2.internal.Utilities.justInject(Utilities.java:862)
at org.jvnet.hk2.internal.ServiceLocatorImpl.inject(ServiceLocatorImpl.java:859)
at org.jvnet.hk2.internal.ServiceLocatorImpl.createAndInitialize(ServiceLocatorImpl.java:934)
at org.jvnet.hk2.internal.ServiceLocatorImpl.createAndInitialize(ServiceLocatorImpl.java:925)
at org.glassfish.jersey.internal.inject.Injections.getOrCreate(Injections.java:174)
at org.glassfish.jersey.server.model.MethodHandler$ClassBasedMethodHandler.getInstance(MethodHandler.java:185)
at org.glassfish.jersey.server.internal.routing.PushMethodHandlerRouter.apply(PushMethodHandlerRouter.java:103)
at org.glassfish.jersey.server.internal.routing.RoutingStage._apply(RoutingStage.java:128)
at org.glassfish.jersey.server.internal.routing.RoutingStage._apply(RoutingStage.java:131)
at org.glassfish.jersey.server.internal.routing.RoutingStage._apply(RoutingStage.java:131)
at org.glassfish.jersey.server.internal.routing.RoutingStage._apply(RoutingStage.java:131)
at org.glassfish.jersey.server.internal.routing.RoutingStage.apply(RoutingStage.java:110)
at org.glassfish.jersey.server.internal.routing.RoutingStage.apply(RoutingStage.java:65)
at org.glassfish.jersey.process.internal.Stages.process(Stages.java:197)
at org.glassfish.jersey.server.ServerRuntime$1.run(ServerRuntime.java:250)
at org.glassfish.jersey.internal.Errors$1.call(Errors.java:271)
at org.glassfish.jersey.internal.Errors$1.call(Errors.java:267)
at org.glassfish.jersey.internal.Errors.process(Errors.java:315)
at org.glassfish.jersey.internal.Errors.process(Errors.java:297)
at org.glassfish.jersey.internal.Errors.process(Errors.java:267)
at org.glassfish.jersey.process.internal.RequestScope.runInScope(RequestScope.java:318)
at org.glassfish.jersey.server.ServerRuntime.process(ServerRuntime.java:236)
at org.glassfish.jersey.server.ApplicationHandler.handle(ApplicationHandler.java:1010)
at org.glassfish.jersey.servlet.WebComponent.service(WebComponent.java:373)
at org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:382)
at org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:345)
at org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:220)
at weblogic.servlet.internal.StubSecurityHelper$ServletServiceAction.run(StubSecurityHelper.java:280)
at weblogic.servlet.internal.StubSecurityHelper$ServletServiceAction.run(StubSecurityHelper.java:254)
at weblogic.servlet.internal.StubSecurityHelper.invokeServlet(StubSecurityHelper.java:136)
at weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:346)
at weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:243)
at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.wrapRun(WebAppServletContext.java:3432)
at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.run(WebAppServletContext.java:3402)
at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:321)
at weblogic.security.service.SecurityManager.runAs(SecurityManager.java:120)
at weblogic.servlet.provider.WlsSubjectHandle.run(WlsSubjectHandle.java:57)
at weblogic.servlet.internal.WebAppServletContext.doSecuredExecute(WebAppServletContext.java:2285)
at weblogic.servlet.internal.WebAppServletContext.securedExecute(WebAppServletContext.java:2201)
at weblogic.servlet.internal.WebAppServletContext.execute(WebAppServletContext.java:2179)
at weblogic.servlet.internal.ServletRequestImpl.run(ServletRequestImpl.java:1572)
at weblogic.servlet.provider.ContainerSupportProviderImpl$WlsRequestExecutor.run(ContainerSupportProviderImpl.java:255)
at weblogic.work.ExecuteThread.execute(ExecuteThread.java:311)
at weblogic.work.ExecuteThread.run(ExecuteThread.java:263)
我一直在试图找出问题所在，但一无所获。
我正在尝试实现CORS过滤器，如果不引用Jax-rs库，该过滤器将无法正常工作。
请帮助！
答案 0 :(得分：0)
我当时使用的weblogic需要升级。虽然，我建议有兴趣构建REST服务的任何人切换到Spring Boot。与在Weblogic上托管JAX-RS Web服务项目相比，它轻巧得多，并且处理起来也容易得多。