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| ClassNotFoundException when call MQMessage readObject method |
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| windle |
 Posted: Sat Dec 06, 2003 7:15 pm Post subject: ClassNotFoundException when call MQMessage readObject method |
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Newbie
Joined: 06 Dec 2003
Posts: 2
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I'm using MQ 5.3 in windows. Following are my codesnippet:
int openOptions = 17;
queue = qMgr.accessQueue(qName, openOptions);
MQGetMessageOptions gmo = new MQGetMessageOptions();
gmo.options += 0;
MQMessage msg = new MQMessage();
queue.get(msg, gmo);
//bMsg = (BusinessMsg)msg.readObject();
Object o = msg.readObject();
System.out.println("received object type:" + o.getClass().getName());
bMsg = (BusinessMsg)msg.readObject();
queue.close();
Note: send message method successed in other side.
Any help are appreciated, thxs in advance!!! |
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| dtauzell |
| Posted: Wed Dec 10, 2003 8:16 am Post subject: |
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Apprentice
Joined: 23 May 2002
Posts: 37
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Usually this is because the class of the object (Business in your case) is not on your local classpath so the readObject fails while trying to de-serialize the object (even when you don't cast it).
Verify the class and all other classes used by that object are in your classpath. |
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| windle |
| Posted: Wed Dec 10, 2003 5:30 pm Post subject: |
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Newbie
Joined: 06 Dec 2003
Posts: 2
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Thanks for your reply.
Actually I wrote a helper class which contains the sendMsg and receiveMsg method, the class(as well as related classes) located at WEB-INF/classes. Then I wrote a jsp for testing, the code is like the following:
1. construct a BusinessMsg object
2. send it using the helper class's sendMsg method
3. call the helper class's receiveMsg method
The problem is the sendMsg method execute correctly, but recieveMsg method failed with a ClassNotFoundException. |
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| dtauzell |
| Posted: Thu Dec 11, 2003 6:35 am Post subject: |
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Apprentice
Joined: 23 May 2002
Posts: 37
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Can you post the code and/or the stack trace?
-Dave |
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