JndiRmiServiceExporter fails to export service on IBM j9 JDK [SPR-16670]

[spring-projects-issues]

John Zimmermann opened SPR-16670 and commented

I have a service which I am attempting to export via the JndiRmiServiceExporter.

<bean id="clientAdminServiceTargetSource" class="com.mypackages.ClientAdminServiceTargetSourceImpl">
<constructor-arg ref="defaultClientAdminService" />
</bean>
<bean id="clientAdminService" class="org.springframework.aop.framework.ProxyFactoryBean">
<property name="proxyInterfaces" value="com.mypackages.ClientAdminService" />
<property name="targetSource" ref="clientAdminServiceTargetSource" />
</bean>
<bean class="org.springframework.remoting.rmi.JndiRmiServiceExporter">
<property name="jndiTemplate" value="jndiTemplate" />
<property name="jndiName" value="ClientAdminService" />
<property name="service" ref="clientAdminService" />
<property name="serviceInterface" value="com.mypackages.ClientAdminService" />
</bean>

Since upgrading to Spring 5.x I've encountered the following error with the IBM j9 deployed on WebSphere 9.x. The same code is also deployed on Oracle Weblogic 12.2.1.3 with the Sun/Oracle JDK and works perfectly fine. Has anyone reported a similar issue or are there any suggestions how to go about handling this?

I have temporarily resolved this by using a customized version of Spring's JndiRmiServiceExporter to behave like the 4.x version did .. with the only notable difference is the absence of :

PortableRemoteObject.exportObject(this.exportedObject);
PortableRemoteObject.unexportObject(this.exportedObject);

With these re-added, everything behaves correctly. It seems based on github commits these lines were removed in association with JDK9 compatibility.

[3/4/18 19:26:50:041 EST] 00000065 webapp E com.ibm.ws.webcontainer.webapp.WebApp notifyServletContextCreated SRVE0283E: Exception caught while initializing context: {0}
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'org.springframework.remoting.rmi.JndiRmiServiceExporter#0' defined in class path resource [com/mypackages/clientContext.xml]: Invocation of init method failed; nested exception is javax.naming.NamingException: ClientAdminService [Root exception is java.rmi.NoSuchObjectException: object not exported]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1710)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:583)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:502)
at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:312)
at org.springframework.beans.factory.support.AbstractBeanFactory$$Lambda$24.0000000017529EF0.getObject(Unknown Source)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:228)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:310)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:200)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:760)
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:868)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:549)
at org.springframework.context.support.ClassPathXmlApplicationContext.<init>(ClassPathXmlApplicationContext.java:144)
at org.springframework.context.support.ClassPathXmlApplicationContext.<init>(ClassPathXmlApplicationContext.java:109)
at com.mypackages.ApplicationContextHolder.<init>(ApplicationContextHolder.java:33)
at com.mypackages.ApplicationContext.getInstance(ApplicationContext.java:63)
at com.mypackages.ApplicationContextLoaderListener.contextInitialized(ApplicationContextLoaderListener.java:41)
at com.mypackages.LoggingServiceContextListener.contextInitialized(LoggingServiceContextListener.java:49)
at com.ibm.ws.webcontainer.webapp.WebApp.notifyServletContextCreated(WebApp.java:1834)
at com.ibm.ws.webcontainer.webapp.WebAppImpl.initialize(WebAppImpl.java:442)
at com.ibm.ws.webcontainer.webapp.WebGroupImpl.addWebApplication(WebGroupImpl.java:88)
at com.ibm.ws.webcontainer.VirtualHostImpl.addWebApplication(VirtualHostImpl.java:171)
at com.ibm.ws.webcontainer.WSWebContainer.addWebApp(WSWebContainer.java:904)
at com.ibm.ws.webcontainer.WSWebContainer.addWebApplication(WSWebContainer.java:789)
at com.ibm.ws.webcontainer.component.WebContainerImpl.install(WebContainerImpl.java:427)
at com.ibm.ws.webcontainer.component.WebContainerImpl.start(WebContainerImpl.java:719)
at com.ibm.ws.runtime.component.ApplicationMgrImpl.start(ApplicationMgrImpl.java:1247)
at com.ibm.ws.runtime.component.DeployedApplicationImpl.fireDeployedObjectStart(DeployedApplicationImpl.java:1514)
at com.ibm.ws.runtime.component.DeployedModuleImpl.start(DeployedModuleImpl.java:704)
at com.ibm.ws.runtime.component.DeployedApplicationImpl.start(DeployedApplicationImpl.java:1096)
at com.ibm.ws.runtime.component.ApplicationMgrImpl.startApplication(ApplicationMgrImpl.java:799)
at com.ibm.ws.runtime.component.ApplicationMgrImpl$5.run(ApplicationMgrImpl.java:2315)
at com.ibm.ws.security.auth.ContextManagerImpl.runAs(ContextManagerImpl.java:5466)
at com.ibm.ws.security.auth.ContextManagerImpl.runAsSystem(ContextManagerImpl.java:5682)
at com.ibm.ws.security.core.SecurityContext.runAsSystem(SecurityContext.java:255)
at com.ibm.ws.runtime.component.ApplicationMgrImpl.start(ApplicationMgrImpl.java:2320)
at com.ibm.ws.runtime.component.CompositionUnitMgrImpl.start(CompositionUnitMgrImpl.java:436)
at com.ibm.ws.runtime.component.CompositionUnitImpl.start(CompositionUnitImpl.java:123)
at com.ibm.ws.runtime.component.CompositionUnitMgrImpl.start(CompositionUnitMgrImpl.java:379)
at com.ibm.ws.runtime.component.CompositionUnitMgrImpl.access$500(CompositionUnitMgrImpl.java:127)
at com.ibm.ws.runtime.component.CompositionUnitMgrImpl$CUInitializer.run(CompositionUnitMgrImpl.java:985)
at com.ibm.wsspi.runtime.component.WsComponentImpl$_AsynchInitializer.run(WsComponentImpl.java:524)
at com.ibm.ws.util.ThreadPool$Worker.run(ThreadPool.java:1909)
Caused by: javax.naming.NamingException: ClientAdminService [Root exception is java.rmi.NoSuchObjectException: object not exported]
at com.ibm.ws.naming.jndicos.CNContextImpl.doRebind(CNContextImpl.java:2148)
at com.ibm.ws.naming.jndicos.CNContextImpl.rebind(CNContextImpl.java:698)
at com.ibm.ws.naming.util.WsnInitCtx.rebind(WsnInitCtx.java:233)
at com.ibm.ws.naming.util.WsnInitCtx.rebind(WsnInitCtx.java:245)
at org.apache.aries.jndi.DelegateContext.rebind(DelegateContext.java:177)
at javax.naming.InitialContext.rebind(InitialContext.java:444)
at org.springframework.jndi.JndiTemplate.lambda$rebind$2(JndiTemplate.java:213)
at org.springframework.jndi.JndiTemplate$$Lambda$142.000000001C87D5A0.doInContext(Unknown Source)
at org.springframework.jndi.JndiTemplate.execute(JndiTemplate.java:91)
at org.springframework.jndi.JndiTemplate.rebind(JndiTemplate.java:212)
at org.springframework.remoting.rmi.JndiRmiServiceExporter.rebind(JndiRmiServiceExporter.java:132)
at org.springframework.remoting.rmi.JndiRmiServiceExporter.prepare(JndiRmiServiceExporter.java:120)
at org.springframework.remoting.rmi.JndiRmiServiceExporter.afterPropertiesSet(JndiRmiServiceExporter.java:104)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1769)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1706)
... 41 more
Caused by: java.rmi.NoSuchObjectException: object not exported
at sun.rmi.transport.ObjectTable.getStub(ObjectTable.java:137)
at java.rmi.server.RemoteObject.toStub(RemoteObject.java:117)
at com.ibm.rmi.util.JDKBridge.getJRMPStub(JDKBridge.java:89)
at com.ibm.rmi.javax.rmi.PortableRemoteObject.toStub(PortableRemoteObject.java:187)
at com.ibm.CORBA.iiop.PortableRemoteObject.toStub(PortableRemoteObject.java:61)
at javax.rmi.PortableRemoteObject.toStub(PortableRemoteObject.java:127)
at com.ibm.ws.naming.util.Helpers.processRemoteObjectForBinding(Helpers.java:700)
at com.ibm.ws.naming.jndicos.CNContextImpl.doRebind(CNContextImpl.java:2061)
... 55 more

---

Affects: 5.0.4

Referenced from: commits 78681c6

[spring-projects-issues]

Juergen Hoeller commented

Indeed, those PortableRemoteObject narrow calls are related to the JDK's CORBA support which is unavailable in the default set of JDK 9 modules... and to be completely removed in JDK 11. We'll see what we can do about conditionally calling it when available at runtime.

[spring-projects-issues]

John Zimmermann commented

thanks Juergen, I assume my workaround of just re-introducing those export/unexportObject calls in a custom JndiRmiServiceExporter class in the meantime is probably my best bet or do you see anything wrong with that approach?

[spring-projects-issues]

Juergen Hoeller commented

That sounds totally fine to me.

[spring-projects-issues]

Juergen Hoeller commented

I've resolved this through reflective invocation of PortableRemoteObject.exportObject/unexportObject now which picks it up on Java 8 but nevertheless allows for building the core framework with JDK 9+ and -target 9/10/11).