M2_REPO – Change maven repository location in eclipse

Learn how to change the Maven local repository location in Eclipse by updating M2_REPO variable and, temporarily, only for current Maven execution.

Add m2_repo from command prompt

Changing the Maven repository location in Eclipse is a straightforward process. By default, Maven uses the .m2/repository folder in the user home directory (e.g., C:\Users\YourUsername\.m2\repository on Windows or ~/.m2/repository on Linux/macOS).

To change the Maven repository location in Eclipse, follow the steps below:

1. Manually Updating the M2_REPO Location

    1.1. Navigate to Windows > Preferences

    eclipse-preferences-8945146

    1.2. Navigate to Java > Build path > Classpath Variables

    classpath_variables_for_projects-4687955

    1.3. Define new classpath variable “M2_REPO”

    Create new variable M2_REPO and point it to maven local repository location.

    add_maven_repository-7353199

    1.4. Verify that variable has been added

    m2_repo_variable_added-6274010

    2. Update M2_REPO from Command Line

    Alternatively, you can define and add M2_REPO via the Maven command “eclipse:configure-workspace“.

    $ mvn -Declipse.workspace="WORKSPACE_LOCATION" eclipse:configure-workspace

    For example, this is the output of the command in my system.

    Microsoft Windows [Version 10.0.17134.228]
    (c) 2018 Microsoft Corporation. All rights reserved.
     
    C:\Users\Lokesh>mvn -Declipse.workspace="E:\devsetup\workspace" eclipse:configure-workspace
    [INFO] Scanning for projects...
    [INFO]
    [INFO] ------------------< org.apache.maven:standalone-pom >-------------------
    [INFO] Building Maven Stub Project (No POM) 1
    [INFO] --------------------------------[ pom ]---------------------------------
    [INFO]
    [INFO] --- maven-eclipse-plugin:2.10:configure-workspace (default-cli) @ standalone-pom ---
    [INFO] ------------------------------------------------------------------------
    [INFO] BUILD SUCCESS
    [INFO] ------------------------------------------------------------------------
    [INFO] Total time: 0.815 s
    [INFO] Finished at: 2018-09-09T14:50:20+05:30
    [INFO] ------------------------------------------------------------------------
    
    Add m2_repo from command prompt
    Add m2_repo from command prompt

    3. Set the Repository Location Temporarily

    If you do not want to modify the settings.xml file, you can set the Maven repository location temporarily by passing the -Dmaven.repo.local flag during a Maven command:

    mvn clean install -Dmaven.repo.local=D:/maven/repository

    This change is only valid for the current Maven execution.

    Happy Learning !!

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