从外部War文件中检索slf4j配置文件

Question

Where can i store SLF4J configuration file so that all production and test environment may have access to it? I want to store the config file outside of the web app at an arbitrary location and retrieve that location upon startup. I also want to allow for changing location of the config file so no classpath. Im thinking about using getters and setters to retrieve the file path.

Any ideas??

Answer 1

slf4j is (for all practical purposes) just the API. You need a backend which does the actual work.

If you use logback you can ship a logback.xml file with your application which just includes another file. If I recall correctly the filename string can hold a ${variable} which you can then define outside your application.

Answer 2

See https://logback.qos.ch/manual/configuration.html#configFileProperty

You may specify the location of the default configuration file with a system property named "logback.configurationFile". The value of this property can be a URL, a resource on the class path or a path to a file external to the application.

java -Dlogback.configurationFile=/path/to/config.xml chapters.configuration.MyApp1