如何更改tomcat上的log4j2日志记录路径？

Question

I'm running a webapp on tomcat using spring-boot .

How could I change the log4j2.xml logging path dynamically? (eg by jvm args, property file, or else)?

So far I configured the log xml as follows:

<Configuration>
    <Properties>
        <property name="path">${bundle:application:log.path}</property>
    </Properties>
</Configuration>

With configuration file:

#application.properties:
log.path=d:/

Now I want to dynamically force the logpath to eg d:/log-test , but without having to modify my war file. Because on redeployment I would lose any manual configuration.

So how could I provide a different logging path?

I want to run multiple profiles on the same machine, so environment or system properties are of no use for me here.

Answer 1

You could do it in multiple ways mentioned here

if you want by environment variable then you could do something like:

${env:MY_LOG_PATH}

if System properties then:

${sys:MY_LOG_PATH}

Answer 2

As has already been suggested using ${sys:LOG_PATH} is probably the best solution. You do not have to modify the war, but you do have to run a tomcat for dev and a separate tomcat for test. Then just place set CATALINA_OPTS to include -DLOG_PATH=/my/log/path in setenv.sh or setenv.bat It really wouldn't make a lot of sense to have a single tomcat running both anyway.