Redirect Grails stacktrace to log4j file

Below is the configuration needed to redirect all stacktrace info to your log4j log file specified. Also you can redirect all console println statements to your log4j

Config.groovy:-

log4j {
    appender.stdout = "org.apache.log4j.ConsoleAppender"
    appender.'stdout.layout'="org.apache.log4j.PatternLayout"
    appender.'stdout.layout.ConversionPattern'='[%r] %c{2} %m%n'
    appender.stacktraceLog = "org.apache.log4j.FileAppender"
    appender.'stacktraceLog.layout'="org.apache.log4j.PatternLayout"
    appender.'stacktraceLog.layout.ConversionPattern'='[%r] %c{2} %m%n'
    appender.'stacktraceLog.File'="../logs/ProcessParamEditor.log"
    //rootLogger="WARN"
    logger {
        grails="error"
        StackTrace="error,stacktraceLog"
        org {
            codehaus.groovy.grails.web.servlet="error"  //  controllers
            codehaus.groovy.grails.web.pages="error" //  GSP
            codehaus.groovy.grails.web.sitemesh="error" //  layouts
            codehaus.groovy.grails."web.mapping.filter"="error" // URL mapping
            codehaus.groovy.grails."web.mapping"="error" // URL mapping
            codehaus.groovy.grails.commons="info" // core / classloading
            codehaus.groovy.grails.plugins="error" // plugins
            codehaus.groovy.grails.orm.hibernate="error" // hibernate integration
            springframework="off"
            hibernate="off"
        }
    }
    additivity.StackTrace=false
}

environments {
    development {
        rootLogger="INFO"
        log4j{
            logger{
                org{
                     org.codehaus.groovy.grails.plugins.searchable="debug"
                }
            }
        }
    }
    test {
        rootLogger="INFO"
        log4j = { appenders { file name:'stacktrace', file:"../logs/stacktrace.log".toString() } }
    }
    production {
        rootLogger="WARN"
        log4j = { appenders { file name:'stacktrace', file:"../logs/ProcessParamEditor.log".toString() } }
    }