Hi,
I am considering to switch from slf4j/logback to log4j2;
in slf4j/logback, I can specify a default value for a missing mdc entry
like this:
<pattern>%d{HH:mm:ss} %X{FOO:--} %c{0} - %m%n</pattern>
which would print "-" if mdc.get("FOO") is null (the ":-" separates
the key and the default value).
Having a defined number of tokens/fields at the beginning of the log message
makes it easier to process it with awk/cut etc.
Does log4j support default values? - I could not find any hint in the
documentation
Regards,
Oliver
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