java util logging.properties: How to log to two different files

Question

I am placing a logging.properties in the WEB-INF/classes dir of tomcat

I would like to log to two different files. For example: org.pkg1 goes to one file and org.pkg2 goes to a separate file.

I can get one file configured, but not two. Is that possible?

Answer 1

There's no easy way to get two handlers of the same type with java.util.logging classes that have different arguments. Probably the simplest way to do this is to create a FileHandler subclass in your logging.properties that passes the appropriate arguments to enable your logging to take place, such as:

org.pkg1.handlers=java.util.logging.FileHandler
org.pkg2.handlers=org.pkg2.FileHandler
java.util.logging.FileHandler.pattern="org_pkg1_%u.%g.log"
org.pkg2.FileHandler.pattern="org_pkg2_%u.%g.log"

org/pkg2/FileHandler.java:

package org.pkg2;

import java.util.logging.*;

public class FileHandler extends java.util.logging.FileHandler {
    public FileHandler() {
        super(LogManager.getLogManager().getProperty("org.pkg2.FileHandler.pattern"));
    }
}

Answer 2

I finally figured this out. In tomcat they extend java util logging ("JULI") to enable this functionality. Here's a logging.properties file that I put in the WEB-INF directory that finally accomplished what I was after:

handlers=1console.java.util.logging.ConsoleHandler, 2jsp.org.apache.juli.FileHandler, 3financials.org.apache.juli.FileHandler
.handlers=1a.java.util.logging.ConsoleHandler

jsp.level=ALL
jsp.handlers=2jsp.org.apache.juli.FileHandler
org.apache.jasper.level = FINE
org.apache.jasper.handlers=2jsp.org.apache.juli.FileHandler
org.apache.jsp.level = FINE
org.apache.jsp.hanlers=2jsp.org.apache.juli.FileHandler

com.paypal.level=ALL
com.paypal.handlers=3financials.org.apache.juli.FileHandler

3financials.org.apache.juli.FileHandler.level=ALL
3financials.org.apache.juli.FileHandler.directory=${catalina.base}/logs
3financials.org.apache.juli.FileHandler.prefix=financials.

2jsp.org.apache.juli.FileHandler.level=ALL
2jsp.org.apache.juli.FileHandler.directory=${catalina.base}/logs
2jsp.org.apache.juli.FileHandler.prefix=jsp.

1console.java.util.logging.ConsoleHandler.level=FINE
1console.java.util.logging.ConsoleHandler.formatter = java.util.logging.SimpleFormatter