generated file in the wrong place - maven

Question

I'm using the maven resources plugin to generate a plain file via filtering within a war file. I have the template file with variables in a the folder src/main/webapp/app
<build>
<plugins>
...
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-resources-plugin</artifactId>
<version>3.1.0</version>
<executions>
<execution>
<phase>process-resources</phase>
</execution>
</executions>
</plugin>
</plugins>
<resources>
<resource>
<directory>src/main/webapp/app</directory>
<filtering>true</filtering>
</resource>
</resources>
</build>
the problem is that the generated file is in the WEB-INF/classes folder and I need it to be at the app folder at the root of the war.
The war structure should be
*.jsf
app/<generated_file>
WEB-INF/
How can I do it?

Answer 1

You have to add a copy-resources goal if you want to copy something to another structure during your build, with that you can point to a custom output path:
<configuration>
<outputDirectory>${basedir}/target/extra-resources</outputDirectory>
<resources>
<resource>
<directory>src/non-packaged-resources</directory>
<filtering>true</filtering>
</resource>
</resources>
</configuration>
This can be found here in the documentation.

Answer 2

With the comments I could finally get the solution. It was simply to set the outputDirectory parameter to src/main/webapp/app and put the template in another place outside src/main/webapp. In my case, I put it in a folder src/main/jnlp. So finally this was the solution.. hope it helps others
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-resources-plugin</artifactId>
<version>3.1.0</version>
<executions>
<execution>
<phase>process-resources</phase>
<goals>
<goal>copy-resources</goal>
</goals>
<configuration>
<outputDirectory>${basedir}/src/main/webapp/app</outputDirectory>
<resources>
<resource>
<directory>src/main/jnlp</directory>
<filtering>true</filtering>
</resource>
</resources>
</configuration>
</execution>
</executions>
</plugin>