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From "Kartik Pandya (Created) (JIRA)" <j...@apache.org>
Subject [jira] [Created] (CXF-3878) org.apache.cxf.jaxrs.impl.WebApplicationExceptionMapper does not print the WebApplicationException stack trace even when log level is set to FINEST
Date Mon, 24 Oct 2011 19:08:32 GMT
org.apache.cxf.jaxrs.impl.WebApplicationExceptionMapper does not print the WebApplicationException
stack trace even when log level is set to FINEST
---------------------------------------------------------------------------------------------------------------------------------------------------

                 Key: CXF-3878
                 URL: https://issues.apache.org/jira/browse/CXF-3878
             Project: CXF
          Issue Type: Bug
          Components: JAX-RS
    Affects Versions: 2.4.3, 2.3.7
         Environment: Windows 7 64-bit, JDK 1.7.0
            Reporter: Kartik Pandya
            Priority: Minor


WebApplicationException occurring as a result of a JAXB mapping (an internal NullPointerException
caused it), never got printed on the console or in the logs.  The following message did get
printed:

  WARNING WebApplicationException has been caught, cause: java.lang.NullPointerException

But beyond this, no other information was available. Debugging revealed that the problem was
in JAXB mapping in one of my classes, but it would have been very helpful if the exception
trace is printed in the logs or on the console.

The problem remained even after setting the log levels in logging.properties to FINEST.  Other
FINEST logs did get printed fine, except for the stack trace of the exception.  My research
showed that the setPrintStackTrace(boolean) method of WebApplicationExceptionMapper never
gets called from anywhere.  This will mean that the printStackTrace variable of the class
always remains false, resulting in eternal shadowing of the stack trace. 

I made a small change to my local copy of org.apache.cxf.jaxrs.impl.WebApplicationExceptionMapper
Java file and patched it to cxf-2.4.3.jar to get the stack trace in my logs when log level
was set to INFO or lower.  The three line change is as below:

    public Response toResponse(WebApplicationException ex) {
+    	if(LOG.isLoggable(Level.INFO)) {
+    		printStackTrace = true;
+    	}
    	...
(lines with + are added lines)

It would be great if you can make this change in subsequent versions.

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