How to set filter in the log4j.xml

Question

HI,

In our web application it prints all the logs are printed like Spring and JSF jars files. Which not required for us. How can I set in the log4j.xml file to filte

Answer 1

You need to define the own logger and appender for your application. For example, if you need to log the trace message in com.xyz.http.RequestFilter:

log4j.com.xyz.http.RequestFilter=TRACE, TRACE_APPEND

log4j.appender.TRACE_APPEND=org.apache.log4j.RollingFileAppender
log4j.appender.TRACE_APPEND.File=example.log

log4j.appender.TRACE_APPEND.MaxFileSize=100KB
log4j.appender.TRACE_APPEND.MaxBackupIndex=1

log4j.appender.TRACE_APPEND.layout=org.apache.log4j.PatternLayout
log4j.appender.TRACE_APPEND.layout.ConversionPattern=%p %t %c - %m%n

See more at log4j official manual http://logging.apache.org/log4j/1.2/manual.html

Answer 2

Log only warning for Spring :

<logger name="org.springframework">
    <level value="warn"/>
    <appender-ref ref="socket"/>
    <appender-ref ref="stdout"/>
</logger>

Same for JSF with the jsf package name... javax.faces, org.apache.myfaces, com.sun.faces etc... also, the appender-ref refers to your appenders...