Include/exclude files from jar with maven depending on phase

Question

I have a

src/main/resources/log4j.xml

file which I would like to be included in the jar when I perform a mvn assembly:assembly but excluded when I perform a mvn package . How could I do this?

I have read several maven docs and questions here but I've been unable so far to do this. I tried many approaches, all of them failed.

Basically, I have in the <build><plugins> section of my pom:

<plugin>
    <artifactId>maven-assembly-plugin</artifactId>
    <configuration>
        <descriptorRefs>
            <descriptorRef>jar-with-dependencies</descriptorRef>
        </descriptorRefs>
    </configuration>
</plugin>

and then in the <build> section

<resources>
    <resource>
        <directory>src/main/resources</directory>
        <excludes>
            <exclude>src/main/resources/log4j.xml</exclude>
        </excludes>
    </resource>
</resources>

but I get log4j.xml included everywhere.

Answer 1

Anything you place in the <exclude> or <include> elements is treated as relative to the <directory> specified. So, they way you have it currently, Maven will try to exclude resource ${basedir}/src/main/resources/src/main/resources/log4j.xml which probably does not exist. Try setting the resources element like this:

<resources>
  <resource>
      <directory>src/main/resources</directory>
      <excludes>
          <exclude>**/log4j.xml</exclude>
      </excludes>
  </resource>

As a side note, the assembly:assembly goal is deprecated. Per the maven-assembly-plugin docs , use the single goal instead.

Answer 2

org.apache.maven.plugins works fine, simple control over including or excluding files in package phase!

<plugin>
   <groupId>org.apache.maven.plugins</groupId>
   <artifactId>maven-jar-plugin</artifactId>
   <version>3.0.2</version>
   <configuration>
      <excludes>
         <exclude>**/password.properties</exclude>
      </excludes>
   </configuration>
</plugin>