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JSP + Struts: Error 9 java.lang.NoSuchFieldError:  org.apache.log4j.Priority.INFO)

Posted on 2006-11-05
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Last Modified: 2010-05-18
I need to create jsp page using struts

First i follow the below link
http://www.oracle.com/technology/obe/obe9051jdev/strutsvalidator/validator.htm#o

But when i run i got the following error.

500 Internal Server Error

java.lang.NoSuchFieldError:  org.apache.log4j.Priority.INFO  <=== i got no idea where to cause this problem

      at org.apache.commons.logging.impl.Log4JLogger.info(Log4JLogger.java:152)
      at org.apache.struts.util.PropertyMessageResources.<init>(PropertyMessageResources.java:127)
      at org.apache.struts.util.PropertyMessageResourcesFactory.createResources(PropertyMessageResourcesFactory.java:90)
      at org.apache.struts.util.MessageResources.getMessageResources(MessageResources.java:577)
      at org.apache.struts.action.ActionServlet.initInternal(ActionServlet.java:1329)
      at org.apache.struts.action.ActionServlet.init(ActionServlet.java:464)

Please help urgent

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Question by:LeanMoreTryMore
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6 Comments
 
LVL 10

Assisted Solution

by:kupra1
kupra1 earned 200 total points
ID: 17879777
Since "NoSuchFieldError" is coming, you are getting the 500 error.
The reason being is that you are probably using the log4j 1.3 instead of 1.2.

log4j1.3 doesn't extend Priority. Hence, it doesn't find the field "INFO" and throws the "NoSuchFieldError".

To avoid this, you should use log4j1.2.*.
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Expert Comment

by:reach2piyush
ID: 17879780
Make sure you have both log4j.jar and commons-logging.jar in your classpath
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Assisted Solution

by:kupra1
kupra1 earned 200 total points
ID: 17879860
It shouldn't be the classpath issue becoz u would be getting the "NoSuchClass" error otherwise.
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LVL 10

Accepted Solution

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jaggernat earned 300 total points
ID: 17881024
Make sure your log4j.properties is set correctly.

log4j.properties file  should be  like this :

log4j.rootLogger=INFO, stdout
log4j.appender.stdout=org.apache.log4j.ConsoleAppender
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
log4j.appender.stdout.layout.ConversionPattern=%5p [%c] %m%n
log4j.logger.httpclient.wire.header=DEBUG
log4j.logger.org.apache.commons.httpclient=DEBUG
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Author Comment

by:LeanMoreTryMore
ID: 17902403
it works.
that's exactly the problem is.

MANY THANKS
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Expert Comment

by:jaggernat
ID: 17902598
u r welcome
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