创建 EJB 对象时出现运行时异常
我使用 Java 1.6、EJB-2.1 开发了一个应用程序。该应用程序部署在JBossAS-5.1.0上。该应用程序运行很长时间以来都非常流畅。但在过去的两天里，我在创建 EJB 本地对象/本地主页时发现了以下运行时异常：
Log Snippet-1:
2012-01-25 17:09:02,896 ERROR [STDERR] (WorkerThread#4[127.0.0.1:47153])
Caused by: java.lang.NullPointerException
2012-01-25 17:09:02,896 ERROR [STDERR] (WorkerThread#4[127.0.0.1:47153])
at
org.jboss.ejb.plugins.local.BaseLocalProxyFactory.invokeHome(BaseLocalProxyF
actory.java:343)
2012-01-25 17:09:02,896 ERROR [STDERR] (WorkerThread#4[127.0.0.1:47153])
at
org.jboss.ejb.plugins.local.LocalHomeProxy.invoke(LocalHomeProxy.java:133)
2012-01-25 17:09:02,896 ERROR [STDERR] (WorkerThread#4[127.0.0.1:47153])
at $Proxy257.create(Unknown Source)
Log Snippet-2:
java.lang.NullPointerException
at org.jboss.ejb.plugins.local.BaseLocalProxyFactory.invoke(BaseLocalProxyFactory.java:457)
at org.jboss.ejb.plugins.local.StatelessSessionProxy.invoke(StatelessSessionProxy.java:103)
at $Proxy263.getDynamicLoopMessage_Generalized(Unknown Source)
Log Snippet-3：
2012-01-17 16:44:49,063 ERROR [org.jboss.ejb.plugins.LogInterceptor]
(WorkerThread#5[192.168.1.76:19743]) RuntimeException in method: public abstract
com.elitecore.billingengine.utils.BEResultObject
com.elitecore.billingengine.ejb.billpreview.interfaces.IBillPreviewSessionLocal.doBasePriceCalcul ation(com.elitecore.billingengine.utils.BEHashMap):
java.lang.NullPointerException
at
com.elitecore.billingengine.ejb.billpreview.sessionfacade.BillPreviewSessionFacade.doBasePriceCal culation(BillPreviewSessionFacade.java:357)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
任何人都可以吗？建议一些相同的指示。
谢谢。
I have developed an application with Java 1.6, EJB-2.1. The application is deployed on JBossAS-5.1.0. The application has been running very smooth for long a time. But for last two days, I found following sort of Runtime Exception while creating EJB Local Object/Local Home:
Log Snippet-1:
2012-01-25 17:09:02,896 ERROR [STDERR] (WorkerThread#4[127.0.0.1:47153])
Caused by: java.lang.NullPointerException
2012-01-25 17:09:02,896 ERROR [STDERR] (WorkerThread#4[127.0.0.1:47153])
at
org.jboss.ejb.plugins.local.BaseLocalProxyFactory.invokeHome(BaseLocalProxyF
actory.java:343)
2012-01-25 17:09:02,896 ERROR [STDERR] (WorkerThread#4[127.0.0.1:47153])
at
org.jboss.ejb.plugins.local.LocalHomeProxy.invoke(LocalHomeProxy.java:133)
2012-01-25 17:09:02,896 ERROR [STDERR] (WorkerThread#4[127.0.0.1:47153])
at $Proxy257.create(Unknown Source)
Log Snippet-2:
java.lang.NullPointerException
at org.jboss.ejb.plugins.local.BaseLocalProxyFactory.invoke(BaseLocalProxyFactory.java:457)
at org.jboss.ejb.plugins.local.StatelessSessionProxy.invoke(StatelessSessionProxy.java:103)
at $Proxy263.getDynamicLoopMessage_Generalized(Unknown Source)
Log Snippet-3:
2012-01-17 16:44:49,063 ERROR [org.jboss.ejb.plugins.LogInterceptor]
(WorkerThread#5[192.168.1.76:19743]) RuntimeException in method: public abstract
com.elitecore.billingengine.utils.BEResultObject
com.elitecore.billingengine.ejb.billpreview.interfaces.IBillPreviewSessionLocal.doBasePriceCalcul ation(com.elitecore.billingengine.utils.BEHashMap):
java.lang.NullPointerException
at
com.elitecore.billingengine.ejb.billpreview.sessionfacade.BillPreviewSessionFacade.doBasePriceCal culation(BillPreviewSessionFacade.java:357)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
Can anyone pls. suggest some pointers on the same.
Thank you.
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从您的日志中很难说，但我猜测这是 com.elitecore.billingengine.utils.BEResultObject 实例的构造函数中的空指针。其余的大部分日志片段只是 jboss 调用层传播的异常。
It's hard to say from your logs, but I would surmise this is a null pointer in the constructor of an instance of
com.elitecore.billingengine.utils.BEResultObject. Most of the rest of the logs snippets are just that exception being propagated by the jboss invocation layer.