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From "Olivier Lamy (JIRA)" <>
Subject [jira] (MWAR-296) maven-war-plugin can cause multiple dependent lib files with same snapshot version.
Date Sun, 30 Jun 2013 13:07:05 GMT


Olivier Lamy updated MWAR-296:

    Fix Version/s: 2.4
         Assignee: Olivier Lamy
> maven-war-plugin can cause multiple dependent lib files with same snapshot version.
> -----------------------------------------------------------------------------------
>                 Key: MWAR-296
>                 URL:
>             Project: Maven 2.x WAR Plugin
>          Issue Type: Bug
>    Affects Versions: 2.3
>            Reporter: Hayarobi Park
>            Assignee: Olivier Lamy
>             Fix For: 2.4
>         Attachments: MWAR-296.patch
> maven-war-plugin copies jar files of dependent artifacts to WEB-INF/lib directory. with
filename as is. It could make trouble when the version of depenedent artifact is snapshot.
> If the artifact was downloaded from remote repository, the jar filename in local repository
contains timestamp value. (eg. deplib-1.0.0-20121220.074535-93.jar )
> If the artifact was built in workspace, the jar file in local repository contains 'SNAPSHOT'.
(eg. deplib-1.0.0-SNAPSHOT.jar )
> Guess multimodule project MyProject which has submodules modA and modWAR, where modWAR
is dependent to modA.
> MyProject |-- modA
>                 |-- modWAR
> When I built just modWAR in my PC, maven (maybe war plugin) looks for repository, and
then find modA-0.1-20130101.074535-93.jar, copy this file to WEB-INF/lib with same filename.
> Then, I 'mvn install' upper moudule MyProject, the submodules will be built. modA is
built and copied to local repository with filename modA-0.1-SNAPSHOT.jar, and war plugin will
copy modA-0.1-SNAPSHOT.jar to WEB-INF/lib when submodule modWAR is built. Now, there are two
modA jar files in WEB-INF/lib directory of modWAR; modA-0.1-20130101.074535-93.jar and modA-0.1-SNAPSHOT.jar.
> If co-work developer build modA and deploy next day in his PC, the lastest snapshot file
will look like modA-0.1-20130102.110000-1.jar
> I build modWAR without cleaning modWAR beforehand. maven will find newer snapshot of
modA, download it, and copy it to WEB-INF/lib without deleting older snapshot version. There
are three of modA jar files now.
> This behavier is different from that of dependey-plugin. 'mvn dependency:copy-dependencies'
will copy files to target directory, changing timestamp value of filename to 'SNAPSHOT'. There
is duplicated dependent library problem.
> I think maven-war-plugin's copying behavier should be like dependent-plugin.

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