How to configure Eclipse build path to use Maven dependencies

Question

I would like to take advantage of the features that Maven provides for managing dependencies in a project  My brief understanding of how Maven works is that it will aquire the JARs needed and then build the project with these libraries   Currently I have a simple POM file set up as a test    lt project xmlns  http   maven apache org POM 4 0 0   xmlns xsi  http   www w3 org 2001 XMLSchema-instance   xsi schemaLocation  http   maven apache org POM 4 0 0 http   maven apache org maven-v4 0 0 xsd  gt     lt modelVersion gt 4 0 0 lt  modelVersion gt     lt groupId gt com jamesgoodwin test lt  groupId gt     lt artifactId gt com jamesgoodwin test lt  artifactId gt     lt version gt 0 0 1-SNAPSHOT lt  version gt     lt build gt     lt  build gt     lt dependencies gt       lt dependency gt           lt groupId gt org springframework lt  groupId gt           lt artifactId gt spring-core lt  artifactId gt           lt version gt 3 0 0 RELEASE lt  version gt           lt type gt jar lt  type gt           lt scope gt compile lt  scope gt       lt  dependency gt     lt  dependencies gt   lt  project gt    To manage dependencies  I usually add the project or JAR to the build path and then i ll be able to build my project     But when using M2Eclipse the dependencies are not added automatically to the build path  Is there any configuration to let Eclipse know that the Maven is managing the dependencies

User · Answer

For newer Eclipse versions    Mars  right click on project   configure   convert to Maven project

User · Answer

I met this issue too  When I add dependencies in the pom xml  I checked in the local folder  Users xyz  m2  and the jars are already downloaded there  but cann t added the the buildpath of the eclipse   My eclipse Version  Mars 2 Release  4 5 2   right click project   Maven   Enable Workspace Resolution  And this solved my issue

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If you right-click on your project  there should be an option under  maven  to  enable dependency management   That s it

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I did like this     Right click on the project--  configure-- convert to maven project  Right click on the project-- maven-- add dependencies

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In Eclipse  Mars  go to   Project Properties --  Maven  Ensure that  Resolve dependencies from workspace projects  is disabled

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Typically  you can copy the  classpath file from a working project since there isn   t anything project specific here assuming you   re structured as a standard Maven project

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Adding my answers for a couple of reasons     Somehow none of the answers listed directly resolved my problem   I couldn t find  Enable dependency management  under Maven  I m using Eclipse 4 4 2 build on Wed  4 Feb 2015    What helped me was another option under Maven called as  Update Project  and then when I click it this window opens which has a checkbox that says  Force update of Snapshot Releases   The real purpose of this checkbox is different I know but somehow it resolved the dependencies issue

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None of that solved my problem  but what I did was if click on the pom xml  there is a tab at the bottom named dependencies  in this tab it is split into 2 section  one called dependencies and one called dependency management  select every thing in the dependency section and click add to be under the dependency management control  close and reopen your project

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I had a slight variation that caused some issues - multiple sub projects within one project   In this case I needed to go into each individual folder that contained a POM  execute the mvn eclipse eclipse command and then manually copy merge the classpath entries into my project classpath file

User · Answer

Make sure your POM follows the naming convention  and is named in lowercase lettering as pom xml and NOT POM xml   In my case all was right  but Eclipse still complained when trying to Right-click and Update project configuration - told me that the POM could not be read  Changed the name to lowercase - pom xml from POM xml - and it worked

User · Answer

When m2eclipse is installed properly  it should add dependencies automatically  However  you should generate the eclipse project files by entering   mvn eclipse m2eclipse   or  alternatively if you don t use m2eclipse   mvn eclipse eclipse

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This worked for me in Eclipse Oxygen  4 7 0     Right click Project -  Maven -  Select Maven Profiles    then check the Repository Proxy box  press OK

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I did not found the maven or configure menus but found the following button that solved my problem

User · Answer

if you execute  mvn eclipse clean   followed by   mvn eclipse eclipse   if will prepare the eclipse  classpath file for you  That is  these commands are run against maven from the command line i e  outside of eclipse

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Right click on the project Configure   convert to Maven project  Then you can see all the Maven related Menu for you project

User · Answer

I m assuming you are using m2eclipse as you mentioned it  However it is not clear whether you created your project under Eclipse or not so I ll try to cover all cases     If you created a  Java  project under Eclipse  Ctrl N   Java Project   then right-click the project in the  Package Explorer view and go to Maven   Enable Dependency Management  depending on the initial project structure  you may have modify it to match the maven s one  for example by adding src java to the source folders on the build path    If you created a  Maven Project  under Eclipse  Ctrl N   Maven Project   then it should be already  Maven ready   If you created a Maven project outside Eclipse  manually or with an archetype   then simply import it in Eclipse  right-click the  Package Explorer view and select Import      Maven Projects  and it will be  Maven ready     Now  to add a dependency  either right-click the project and select Maven   Add Dependency  or edit the pom manually   PS  avoid using the maven-eclipse-plugin if you are using m2eclipse  There is absolutely no need for it  it will be confusing  it will generate some mess  No  really  don t use it unless you really know what you are doing

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Add this to  classpath file      lt classpathentry kind  con  path  org eclipse m2e MAVEN2 CLASSPATH CONTAINER  gt       lt attributes gt           lt attribute name  maven pomderived  value  true   gt       lt  attributes gt   lt  classpathentry gt    Thx

User · Answer

Maybe you could look into maven-eclipse-plugin instead of M2Eclipse   There you basically add maven-eclipse-plugin configuration to your pom xml and then execute mvn eclipse eclipse which will generate the required  project and  classpath files for Eclipse  Then you ll have the correct build path in Eclipse

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