Maven：通过项目目录外的相对路径向jar添加依赖项

Question

The situation is largely similar as in this SO question except for the resource I'm trying to point to is outside the project folder.

The background is that I have a git repo that contains a few projects. One of the projects requires a jar from another project for running so the intended dependency should be smth like this:

<dependency>
    <groupId>another-proj-jar</groupId>
    <artifactId>another-proj-jar</artifactId>
    <version>1.0</version>
    <scope>system</scope>
    <systemPath>../another-proj/build/another-proj.jar</systemPath>
</dependency> 

another-proj is not a Maven project (and converting it to a Maven proj is an issue of itself, let's skip it here) so I create that jar manually through Eclipse import.

However, I am not sure whether it is possible to indicate a relative path beyond the project directory because all examples point to //${basedir}/my-repo where ${basedir} is essentially the current project folder. I need to make it one level up the current project's folder.

Could you tell me whether it's possible and how or what could be a workaround?

Answer 1

Really this should just be a normal dependency. In the project you are dependent on (another-proj in your example) run a mvn clean install . This will copy the .jar file to your ~/.m2/repository directory. Then in the project that requires the library have a dependency like:

<dependency>
    <groupId>another-proj-jar</groupId>
    <artifactId>another-proj-jar</artifactId>
    <version>1.0-SNAPSHOT</version>  <!-- or whatever it is set to -->
</dependency> 

The huge advantage with this is that if the jar you're pulling in requires anything else then that'll get pulled in too.