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I am using Tomcat 7.0.28, running under OpenJDK 1.7 on Ubuntu, and am trying to modify the formatting string used by java.util.logging.SimpleFormatter. According to the Javadocs for that class, I can specify the property java.util.logging.SimpleFormatter.format to change the format. And indeed, when I run my webapp in Eclipse and change this property in my logging.properties file, it works.
However, when I deploy the app to Tomcat, this property does not seem to have any effect. I am confident that my properties file is being read correctly, as other changes that I make to it do indeed take effect (I'm reading the properties in from a file using
LogManager.getLogManager().readConfiguration(new FileInputStream(file))
where file is configured via a parameter in my web.xml file. I've tried putting the file in WEB-INF/classes/logging.properties, with no change in behavior.
The Javadocs for SimpleFormatter specify that if both a properties file and a system property specify the formatting string, the system property takes precedence. I have verified that the system property is not set
context.log ("Formatting system property is " + System.getProperty("java.util.logging.SimpleFormatter.format"));
in a ServletContextListener.contextInitialized method.
Here's my logging properties file in full
handlers=java.util.logging.ConsoleHandler
# Default logging level for root logger
.level=FINE
# Set the level for the ConsoleHandler
java.util.logging.ConsoleHandler.level=FINE
java.util.logging.ConsoleHandler.formatter=java.util.logging.SimpleFormatter
java.util.logging.SimpleFormatter.format=[%1$tF %1$tr] %3$s %4$s: %5$s %n
I've tried everything I can think of, including modifying logging.properties in both the TOMCAT/conf and JRE_HOME/lib directory. Nothing seems to make any difference.
java.util.logging.SimpleFormatter.format is indeed documented to be settable in either logging.properties -which does not work for me either- or as a command line argument (java option).
The command line argument appears to work for me. Because the $JAVA_OPTS variable is going through so much tampering and ends up in eval, this is how I solved it (on Debian, java 1.7.0_07, apache-tomcat-7.0.30)
$CATALINA_HOME/bin/catalina.sh (line 230):
Don't know if this will solve your problem, but it may be worth a try. I was seeing the same behavior, although in my case I was doing the logging setup programmatically instead of using properties. Turns out that the property value for java.util.logging.SimpleFormatter.format needs to be set BEFORE constructing the (in my case) FileHandler. I was setting it after constructing the FileHandler, but before constructing SimpleFormatter. I wonder if, in your properties file, defining java.util.logging.SimpleFormatter.format BEFORE defining any of the Handler properties will solve the problem.
You may be witnessing this bug.
The bug is fixed from Tomcat version 7.0.41 onwards as well as 6.0.38 onwards.
Thanks to info in the bug report pointed out by nolan6000 I finally got this working with tomcat-juli.
Instead of:
it has to be:
Using a formatter pattern in default Tomcat 8 JULI logger needs this, you may put arguments to a global
$tomcat/conf/logging.propertiesor webapp specific$tomcat/webapps/myapp/WEB-INF/classes/logging.propertiesfile.This is my global file where have also disabled a manager-webapp logging files. Logging line is:
2015-09-23 17:32:11 INFO org.apache.catalina.startup.Catalina Server startup in 1028 ms