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

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 pos开发者_如何学运维sible?

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.handlers=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

Speaking of logging.properties configuration, I did not found any mechanism to use more that one appender. I made simple workaround that works for me.

public class CustomAFileHandler extends FileHandler {
   public DebugFileHandler() throws IOException, SecurityException {
      super();
   }
}

public class CustomBFileHandler extends FileHandler {
   public DebugFileHandler() throws IOException, SecurityException {
      super();
   }
}

And my logging.properties

...
handlers=<pkg_name>.CustomAFileHandler, <pkg_name>.CustomBFileHandler, java.util.logging.ConsoleHandler

<pkg_name>.CustomAFileHandler.level=ALL
<pkg_name>.CustomAFileHandler.pattern=%h/A%u.log
<pkg_name>.CustomAFileHandler.limit=50000
<pkg_name>.CustomAFileHandler.count=1 
<pkg_name>.CustomAFileHandler.formatter=java.util.logging.SimpleFormatter


<pkg_name>.CustomBFileHandler.level=ALL
<pkg_name>.CustomBFileHandler.pattern=%h/B%u.log
<pkg_name>.CustomBFileHandler.limit=50000
<pkg_name>.CustomBFileHandler.count=1 
<pkg_name>.CustomBFileHandler.formatter=java.util.logging.SimpleFormatter
...

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"));
    }
}

It is possible using pure jdk also (try with jdk 7 or jdk 8).

Just create custom file handler; use that similar to "java.util.logging.FileHandler".

public class JULTestingFileHandler extends FileHandler {

    public JULTestingFileHandler() throws IOException, SecurityException 
    {
        super();    
    }
}

user properties file;

com.xxx.handlers = com.xxx.JULXXXFileHandler

com.xxx.JULXXXFileHandler.pattern   = ./logs/test1_test2.%u.%g.log

Having the same problem myself with java.util.logging and not quite satisfied with the given answers, I just found in the documentation:

2.2 Changing the Configuration

Here's a small program that dynamically adjusts the logging configuration to send output to a specific file and to get lots of information on wombats. The pattern "%t" means the system temporary directory.

public static void main(String[] args) {
        Handler fh = new FileHandler("%t/wombat.log");
        Logger.getLogger("").addHandler(fh);
        Logger.getLogger("com.wombat").setLevel(Level.FINEST);
        ...
    }

So, it seems you can't do it just from the .properties file as can't instantiate several appenders, but you can do it programmatically. Also it should be possible using the LoggerManager