Setting Up Custom Maven Repository with a Relative Folder

There are times where we want to build our application while pointing our library to a specific custom folder, which is having a relative folder location to current project Java folder.

For example, i have a Java project and a Libs folder with structure like below

libs/
+--- org
|   +--- postgresql
|   |   +--- postgresql
|   |   |   +--- random.version
|   |   |   |   +--- postgresql-random.version.jar

java_project/
+--- pom.xml
+--- src
|   +--- main
|   |   +--- java

We can build our java_project by refering to libs folder by using this configuration on our pom.xml

    <repositories>
        <repository>
            <id>local-repo</id>
            <name>Local Repository</name>
            <url>file://${project.basedir}/../libs</url>
        </repository>
    </repositories>

And refer it

	<dependency>
		<groupId>org.postgresql</groupId>
		<artifactId>postgresql</artifactId>
		<version>random.version</version>
	</dependency>

Running maven build command will display the complete build log where library is coming from our relative folder location,

$ mvn clean package

.......

Downloading from local-repo: file:///source/java_project/../libs/org/postgresql/postgresql/random.version/postgresql-random.version.jar
[WARNING] Could not validate integrity of download from file:///source/java_project/../libs/org/postgresql/postgresql/random.version/postgresql-random.version.jar: Checksum validation failed, no checksums available
[WARNING] Checksum validation failed, no checksums available from local-repo for file:///source/java_project/../libs/org/postgresql/postgresql/random.version/postgresql-random.version.jar
Downloaded from local-repo: file:///source/java_project/../libs/org/postgresql/postgresql/random.version/postgresql-random.version.jar (1.0 MB at 7.0 MB/s)