打包到jar时配置log4j.properties文件位置

Question

I have a concern that where do we have to put log4j.properties file when packaging to jar file by using maven.what is the best practice here.

Answer 1

General recommendation

Put it into src/main/resources . You may want to define a more verbose log4j configuration in src/test/resources , if you do use junit tests.

See maven standard directory layout .

Setting a new configuration for specific executions

If you want to create an executable jar with a main method, you can ship a default configuration in src/main/resources and still provide an overriding log configuration when starting your jvm, using this jvm parameter: -Dlog4j.configuration=file:"<FILE_PATH>" .

Building for multiple environments

You can also create multiple subfolders in your resource configuration and have the maven resource plugin copy the correct log4j.xml to the destination via maven profiles .