How do I filter certain lines from a log4j stack trace?

I want to filter out certain lines from stack traces using log4j (like net.sf.cglib.* and org.springframework.*). Is it possible to configure this with log4j?

In eclipse the junit plugin allows you to add filters which modify the stack traces displayed in the junit tab, but this doesn't change the stack traces output to the console.

Solution

Use this filtering layout log4j add-on: http://www.openmindlab.com/lab/tools/openutilslog4j/layout.html

They have an example with log4j.xml on that page. Just use the it.openutils.log4j.FilteredPatternLayout instead of the log4j PatternLayout, and then put some entries like

    <param name="Filter" value="net.sf.cglib"/>
    <param name="Filter" value="org.springframework"/>

below.