[LOG4J2-50] Incorrect %C output (FQCN)

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Component/s: Core
• Assignee: Ralph Goers
• Reporter: John Vasileff
• Created: 16/Sep/11 17:55
• Updated: 03/Oct/11 22:07
• Resolved: 27/Sep/11 06:35

Description

The fully qualified class name must be set correctly to support conversions like %C. In some cases, %C information is incorrect. I think this is related to AbstractLogger allowing getFQCN() to be overridden. Log methods handled by AbstractLogger should have AbstractLogger's FQCN, not that of the subclass.

Example:

slf4jLogger.info("slf4jLogger test %C."); // works; SLF4JLogger overrides this method
slf4jLogger.info("slf4jLogger test %C.", t); // fails with '?'; handled by AbstractLogger
category2.info("category test %C"); // fails with 'o.a.l.Category'

Output:

INFO Log4j2Testing [main] slf4jLogger test %C.
INFO ? [main] slf4jLogger test %C.
java.lang.Throwable
at Log4j2Testing.main(Log4j2Testing.java:22)
INFO o.a.l.Category [main] category test %C