On Dec 18, 2006, at 9:25 PM, jin xin wrote:
Hi:
I use the following code
Class testClass
{
public void test1()
{
---
Throwable throwable = null;
Throwable child = new Throwable("test");
LoggingEvent loggingEvent = new LoggingEvent(this.getClass().getName
(),testLogger,Level.DEBUG,logMsg,child);
System.out.println("class = "+loggingEvent.getLocationInformation
().getClassName());
System.out.println("method = "+loggingEvent.getLocationInformation
().getMethodName());
System.out.println("line = "+loggingEvent.getLocationInformation
().getLineNumber());---
---}
}
I am expecting to see the className, methodName and lineNumber to
print out, however, I only get "?" for classNamem methodName and
lineNumber.
Can anybody advise me what I did wrong?
Thanks
I see two potential usage errors. First, perhaps the caller was not
compiled with debug information. In this case, you likely passed the
"testClass" as the fully qualified logger name, so the reported
location will be the location that called testClass.test1 and the
test framework might not have been compiled with debugging info.
The second and less likely is that you extended testClass and the
value of this.getClass().getName() isn't "testClass" but the name of
the extended class, but the stack trace contains "testClass.test1"
and log4j isn't able to determine the name of the caller. Using
testClass.class.getName() would be better.
If you are still having problems, I'd suggest debugging into the
getLocationInformation() call and see where things are breaking apart
and if a resolution is not obvious, describe your observations and
specify the version of log4j that you are using, the JVM in use,
platform et al.
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