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weblogic.jms. common.JMSException: Error deserializing object

Priyaa V Kumar
Ranch Hand

Joined: Aug 12, 2004
Posts: 32
Hi,

I am trying to put my own Serializable objects into a Topic.

I have a message driven bean listening on this and in the method onMessage, i try to cast the object received to the Serializable object sent.

I get the following error

weblogic.jms.common.JMSException: Error deserializing object
at weblogic.jms.common.ObjectMessageImpl.getObject(ObjectMessageImpl.jav
a:144)
at DbLoggerBean.doLogging(DbLoggerBean.java:71)
at LoggerBean_8hiuxq_EOImpl.doLogging(LoggerBean_8hiuxq_EOImpl.java:45)
at LoggerBean_8hiuxq_EOImpl_CBV.doLogging(Unknown Source)
at MessageListenerBean.onMessage(MessageListenerBean.java:54)
at weblogic.ejb20.internal.MDListener.execute(MDListener.java:382)
at weblogic.kernel.ExecuteThread.execute(ExecuteThread.java:197)
at weblogic.kernel.ExecuteThread.run(ExecuteThread.java:170)
Caused by: java.lang.ClassNotFoundException: org.apache.log4j.spi.LoggingEvent
at weblogic.utils.classloaders.GenericClassLoader.findClass(GenericClass
Loader.java:198)
at java.lang.ClassLoader.loadClass(ClassLoader.java:289)
at java.lang.ClassLoader.loadClass(ClassLoader.java:235)
at weblogic.utils.classloaders.GenericClassLoader.loadClass(GenericClass
Loader.java:223)
at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:302)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:219)
at weblogic.jms.common.ObjectMessageImpl$ObjectInputStream2.resolveClass
(ObjectMessageImpl.java:305)


In my client program that publishes messages to a topic, the code looks like this

Result result = new Result();
result.setXXX();
........
logger.info( rslt);

I use the JMSAppender provided by the Log4j.

In my MDB, I write like this...


if (message instanceof ObjectMessage)
{
ObjectMessage m = (ObjectMessage) message;
Result rslt = (Result) m.getObject();
}


I get the Error deserializing object error at the line where i try to getObject() abd cast it to Result.

I use WebLogic 8.1.

Any help in this regard is appreciated.
Andrew Turner
Greenhorn

Joined: Sep 28, 2004
Posts: 1
Pri Vij,

From the looks of the stack trace your server code cannot find the org.apache.log4j.spi.LoggingEvent class. Do you have this class in the classpath of your server? I have never used the log4j JMSAppender but it looks to me like your server is going to need this class in order to deserialize the object.

later,
andy
 
I agree. Here's the link: http://aspose.com/file-tools
 
subject: weblogic.jms. common.JMSException: Error deserializing object
 
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