Force re-download of release dependency using Maven

Question

I m working on a project with dependency X  X  in turn  depends on Y   I used to explicitly include Y in my project s pom  However  it was not used and to make things cleaner  I instead added it to X s pom as a dependency  X is marked as a release dependency   The problem is that after removing Y from my project s pom and adding it to X s pom  my project isn t picking it up on mvn -U clean package  I know -U update snapshots but not releases   So  without deleting the    m2 repository directory how can I force a re-download of X s pom  Also  I tried running dependency purge-local-repository and it didn t work either

User · Answer

mvn clean install -U   -U means force update of dependencies   If you want to update a single dependency without clean or -U you could just remove it from your local repo and then build

User · Answer

Deleting the    m2 repository will solve your problem  But  if you still need to keep the old    m2 repository you can just change the maven local path temporarily   If you are working on IntelliJ just go to Maven Settings and change the Local Repository path to somewhere else  You may need to tick the override checkbox near there

User · Answer

You cannot make Maven re-download dependencies  but what you can do instead is to purge dependencies that were incorrectly downloaded using mvn dependency purge-local-repository  See  http   maven apache org plugins maven-dependency-plugin purge-local-repository-mojo html

User · Answer

Just delete    m2 repository      actual path where the invalid LOC is coming as it forces to re-download the deleted jar files  Dont delete the whole repository folder instead delete the specific folder from where the error is coming

User · Answer

Go to build path    delete existing maven library u added    click add library     click maven managed dependencies    then click maven project settings    check resolve maven dependencies check box  it ll download all maven dependencies

User · Answer

Most answers provided above would solve the problem   But if you use IntelliJ and want it to just fix it for you automatically  go to Maven Settings   Build Execution  Deployment -  Build Tools -  Maven    Disable Work Offline  Enable Always update snapshots  Switch when required

User · Answer

I just deleted my    m2 repository and that forced a re-download

User · Answer

If you know the group id of X  you can use this command to redownload all of X and it s dependencies  mvn clean dependency purge-local-repository -DresolutionFuzziness org id of x   It does the same thing as the other answers that propose using dependency purge-local-repository  but it only deletes and redownloads everything related to X

User · Answer

When you added it to X  you should have incremented X s version number i e X-1 2 Then X-1 2 should have been installed deployed and you should have changed your projects dependency on X to be dependent on the new version X-1 2

User · Answer

Thanks to Ali Tokmen answer  I managed to force delete the specific local dependency with the following command   mvn dependency purge-local-repository -DmanualInclude com skyfish utils   With this  it removes utils from my  m2 repository and it always re-download the utils JAR dependency when I run mvn clean install

User · Answer

Project right click-  Maven -  Update Project and check the checkboxes as in the screen shot  It will update releases as well

User · Answer

If you really want to force-download all dependencies  you can try to re-initialise the entire maven repository  Like in this article already described  you could use   mvn -Dmaven repo local  HOME  my other repository clean install

User · Answer

I think following command may help you     mvn -U clean install

[maven-2] Force re-download of release dependency using Maven

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