Maven: how to filter the same resource multiple times with different property values?

Question

Our project uses Log4J, configured via log4j.properties file. We have multiple production servers, which log to different log files, so that the logs can be differentiated. So l

Answer 1

Here are some approaches that you can try:

1. use the antrun plugin, and the copy task to make duplicates of your resource file in the generate-resources phase. An example of using the antrun plugin is given in the answer to this SO question on copying with maven. You could even use ant's property expansion to expand each ${log.file.postfix} to a distinct value, either the literal values, 1,2,3 etc. or unique placeholders, ${log.file.postfix1}, ${log.file.postfix2} which are finally replaced when maven does the resource filtering.

2. Rather than using antrun, use your version control system to set up multiple copies of the same file. You can then run multiple instances of the resources:copy-resources goal, each with different property values configured, and a different target file name.