Using maven with eclipse

As i first started using maven for my projects, I used to add the maven plugin to eclipse. The plugin makes you able to mark a project as "maven enabled". This adds the library maven dependencies to the classpath of the project so the dependency libraries can be visible to your classes.

As i moved further, I found a better way dealing with maven projects using eclipse; maven eclipse:clean and eclipse:eclipse goals.

the goals enables you to make all the configuration and settings through command line which is more powerful and stable. Actually i now never created a new project inside eclipse. It is better to created it outside using maven. Then through eclipse:eclipse u create eclipse project settings files that is ready to be imported to any running eclipse instance.

M2_REPO variable that points to the local maven repository. The pretty thing is that you can add that variable to an eclipse workspace through mvn -Declipse.workspace={workspace-path} eclipse:add-maven-repo

To put things into order. for better use of maven and eclipse:

Setup maven repo variable for the eclipse workspace

mvn -Declipse.workspace=D:\java\eclipse-workspace eclipse:add-maven-repo

Create your new maven project through command line

mvn archetype:create -DgroupId=com.mycompany -DartifactId=MyProject -DarchetypeArtifactId=maven-archetype-webapp -Dpackaging=war -Dgeneratepom=true

Change the working directory to that of the new project and setup eclipse project files

mvn eclipse:eclipse

When you edit your pom file to add/remove dependencies you must resetup the eclipse project files through

mvn eclipse:clean eclipse:eclipse
and then do not forget to refresh ur project in eclipse :)

find more about maven with eclipse

Comments

mshalaby said…
Great Info. Thanks a lot. That was very helpful.
5:20 AM
mahmoud said…
glad it helped
6:54 AM
Crowie said…
Hi Mahmoud. I agree about the command line being more stable. We've got Maven integration in eclipse but things quickly get hard to manage. I believe it's partly because we don't have a strong grasp of how to use Maven. The commands you've listed here are very useful foundation commands. Thanks
8:33 AM
mahmoud said…
I'm glad it helped.

GUI just wraps command line tools.. but using command line directly gives you a better grasp of what is really going on

Good Luck
12:26 PM
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