Maven Profile with different config files

Question

my project structure looks like this

-src/main/java
-src/main/resources
 -dev
  -app.properties
 -prod
  -app.properties
 -sandbox
   -app.properties

and I defined a maven profiles like this

<profiles>
    <profile>
      <id>dev</id>
      <properties>
        <build.profile>dev</build.profile>
      </properties>
      <build>
        <resources>
          <resource>
            <directory>src/main/resources/dev</directory>
          </resource>
        </resources>
      </build>
    </profile>
    <profile>
      <id>prod</id>
      <properties>
        <build.profile>prod</build.profile>
      </properties>
      <build>
        <resources>
          <resource>
            <directory>src/main/resources/prod</directory>
          </resource>
        </resources>
      </build>
    </profile>
    <profile>
      <id>sandbox</id>
      <properties>
        <build.profile>sandbox</build.profile>
      </properties>
      <build>
        <resources>
          <resource>
            <directory>src/main/resources/sandbox</directory>
          </resource>
        </resources>
      </build>
    </profile>
  </profiles>

what I am trying to do is to copy the right property from the right sub folder, when I triggered the right profile, e.g mvn -pdev install. will let the maven copy the app.properties file from the src/main/resource/dev folder then place into the jar I am building

my jar looks like this:

  +dev
  +prod
  +sandbox
  +META-INF
  +com
  -app.properties

the problem is 5 folders with a single properties file, I don't want the dev prod sandbox folders.

do you want this file into the root of your jar or in the dev/prod/sandbox subfolder? — Sergey Pauk
What do you mean with other sub folders? Do you have the folders dev, prod, sandbox in your JAR, or subfolders within the folder for the profile? Could you post a sample, how your JAR looks? — dunni

Junchen Liu Junchen Liu · Accepted Answer · 2015-04-10T14:49:03

dunni's answer will work but I did this way

putting the sub folders into a folder called src/main/profiles, if you are using eclipse, its important to add this folder as "source folder". so the project looks like this

-src/main/resource

-src/main/profiles
```
-prod
-dev 
-ist
```

Note : you can put anything where is common and never changes cross all profiles into the resource folder, etc log4j.properties then put the profile specific ones into each sub folders respectively.

and the final profile section looks like this

<profiles>
    <profile>
      <id>dev</id>
      <properties>
        <build.profile>dev</build.profile>
      </properties>
      <build>
        <resources>
          <resource>
            <directory>src/main/profiles/dev</directory>
          </resource>
        </resources>
      </build>
    </profile>
    <profile>
      <id>prod</id>
      <properties>
        <build.profile>prod</build.profile>
      </properties>
      <build>
        <resources>
          <resource>
            <directory>src/main/profiles/prod</directory>
          </resource>
        </resources>
      </build>
    </profile>
    <profile>
      <id>sandbox</id>
      <properties>
        <build.profile>sandbox</build.profile>
      </properties>
      <build>
        <resources>
          <resource>
            <directory>src/main/profiles/sandbox</directory>
          </resource>
        </resources>
      </build>
    </profile>
  </profiles>

reason I did this way is because Maven by default is trying to copy everything from the /resource folder into the jar.

but using the jar plugin I can get what I want, but I am trying to keep my pom simple.

the main problem I have faced there, is how to excluding files from the /resource folder. please comment if anyone knows better way to do it

Maven Profile with different config files

2 Answers