Log4J JSON Layout

A JSON layout for Log4J (v1.2).

Output format

{"timestamp":"<DATE>","level":"<LEVEL>","logger":"<LOGGER>","thread":"<THREAD>","message":"<MESSAGE>","stacktrace":"<STACKTRACE>"}

The "stacktrace" item is optional and will only be in the JSON object if the log message has a trace message.

Example log4j.properties

log4j.appender.stdout=org.apache.log4j.ConsoleAppender
log4j.appender.stdout.layout=com.tperamaki.log4j.JsonLayout
log4j.appender.stdout.layout.DatePattern=yyyy-MM-dd'T'HH:mm'Z'

Layout configuration

Name	Options	Default
DatePattern	all valid SimpleDateFormat patterns	yyyy-MM-dd HH:mm:ss,SSS