无法在JNDI查找上的com.ibm.ws.naming.urlns.genericURLContextFactory类型的对象上调用方法getObjectInstance

Question

你知道为什么我会得到这个例外吗？

String url = "corbaloc:iiop:localhost:2809";
String initial = "com.ibm.websphere.naming.WsnInitialContextFactory";
String jndi = "ejblocal:my/ejb/PeriodoBO";

Hashtable<String, String> pdEnv = new Hashtable<String, String>();
pdEnv.put("java.naming.provider.url", url);
pdEnv.put("java.naming.factory.initial", initial);
Context initialContext = new InitialContext(pdEnv);

try{
    Object ejbHome = initialContext.lookup(jndi); // <-- here
    Object obj = PortableRemoteObject.narrow(ejbHome, PeriodoBO.class);
}catch(NamingException e){
    System.err.println(e.toString());
}

我确定JNDI没问题，我很难得到它（What's the default JNDI name of an EJB in Websphere Application Server 7 (WAS)?）。

你能帮我吗？

这是我的运行配置：

更新，我刚刚得到了堆栈跟踪，我正在分析它：

WSCL0910I: Initializing component: com.ibm.ws.websvcs.component.WASAxis2ClientImpl
WSCL0911I: Component initialized successfully.
WSCL0910I: Initializing component: com.ibm.ejs.jms.JMSClientRegistration
WSCL0911I: Component initialized successfully.
WSCL0901I: Component initialization completed successfully.
WSCL0035I: Initialization of the Java EE Application Client Environment has completed.
WSCL0014I: Invoking the Application Client class xxxxx.tests.AllTests
.[02/06/14 17:21:45:963 COT] 00000000  W UOW=1-46884688-4040963:dmflores source=com.ibm.websphere.naming.genericURLInitialContextFactory org=IBM prod=WebSphere component=Application Server thread=[P=704708:O=0:CT]
          NMSV0907E: Could not invoke method "getObjectInstance" on object of type "com.ibm.ws.naming.urlns.genericURLContextFactory".
E.
Time: 0,011
There was 1 error:
1) testCursosLlevados(xxxxx.CursosTest)javax.naming.ConfigurationException: Could not invoke method getObjectInstance on object of type com.ibm.ws.naming.urlns.genericURLContextFactory. [Root exception is java.lang.reflect.InvocationTargetException]
    at com.ibm.websphere.naming.genericURLInitialContextFactory.getAndInvokeMethod(genericURLInitialContextFactory.java:480)
    at com.ibm.websphere.naming.genericURLContextFactory.getObjectInstance(genericURLContextFactory.java:165)
    at javax.naming.spi.NamingManager.getURLContext(Unknown Source)
    at javax.naming.InitialContext.getURLOrDefaultInitCtx(Unknown Source)
    at javax.naming.InitialContext.lookup(Unknown Source)
    at xxxxxxx.tests.CursosTest.testCursosLlevados(CursosTest.java:59)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:45)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:37)
    at xxxxxx.tests.AllTests.main(AllTests.java:17)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:45)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:37)
    at com.ibm.ws.client.applicationclient.launchClient.createContainerAndLaunchApp(launchClient.java:797)
    at com.ibm.ws.client.applicationclient.launchClient.main(launchClient.java:502)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:45)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:37)
    at com.ibm.wsspi.bootstrap.WSLauncher.launchMain(WSLauncher.java:213)
    at com.ibm.wsspi.bootstrap.WSLauncher.main(WSLauncher.java:93)
    at com.ibm.wsspi.bootstrap.WSLauncher.run(WSLauncher.java:74)
    at org.eclipse.core.internal.runtime.PlatformActivator$1.run(PlatformActivator.java:78)
    at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:92)
    at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:68)
    at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:400)
    at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:177)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:45)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:37)
    at org.eclipse.core.launcher.Main.invokeFramework(Main.java:340)
    at org.eclipse.core.launcher.Main.basicRun(Main.java:282)
    at org.eclipse.core.launcher.Main.run(Main.java:981)
    at com.ibm.wsspi.bootstrap.WSPreLauncher.launchEclipse(WSPreLauncher.java:341)
    at com.ibm.wsspi.bootstrap.WSPreLauncher.main(WSPreLauncher.java:111)
Caused by: java.lang.reflect.InvocationTargetException
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:45)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:37)
    at com.ibm.websphere.naming.genericURLInitialContextFactory.getAndInvokeMethod(genericURLInitialContextFactory.java:466)
    ... 49 more
Caused by: javax.naming.ConfigurationException: There is no name space
    at com.ibm.ws.naming.urlns.genericURLContextFactory.isNameSpaceAccessable(genericURLContextFactory.java:96)
    at com.ibm.ws.naming.urlbase.UrlContextFactory.getObjectInstance(UrlContextFactory.java:84)
    ... 54 more

Answer 1

ejblocal：my / ejb / PeriodoBO指向本地界面。 Java EE应用程序客户端无法访问本地接口。您需要远程接口。

为您的bean添加具有正确接口的@Remote。然后在应用程序初始化期间，您将在SystemNut.log绑定名称中找到该接口在JNDI中绑定的名称。 然后在initialContext.lookup（jndi）;使用那个JNDI名称。

希望有所帮助

Answer 2

由于此代码是从Java EE Application Client中调用的，并且WAM库启动了Java EE Application Client，因此您所拥有的大部分代码都是不必要的，也可能是您遇到问题的原因。试试这个：

String jndi = "ejblocal:my/ejb/PeriodoBO";
Context initialContext = new InitialContext();
Object ejbHome = initialContext.lookup(jndi);
Object obj = PortableRemoteObject.narrow(ejbHome, PeriodoBO.class);

编辑，添加@ Gas的解决方案（这真正解决了问题的根源）。