m2eclipse not finding maven dependencies artifacts not found

Question

I m using m2eclipse as my maven 2 plugin for eclipse   I m brand new to maven  so my mistake might be simple  although searching has not yielded any solutions for me   I can run maven from the command line and it build successfully   However if I import as an existing maven project  or use mvn eclipse eclipse and then import I get the artifacts not found in my POM file resulting in no maven dependencies being loaded at all   What s odd is that I have 2 projects  both children to a parent pom packaged project   One child loads all my maven dependencies while the other cannot find any and says my pom file is missing artifacts   Again  I can install and package them all just fine from the command line   I even tried loading my projects into netbeans which worked flawlessly  however I am required to use eclipse   Any ideas on how to fix this   Update  Directory structure  pom files layout   --main   --pom xml    is a pom package that is the parent to two other projects    --ProjectA     --pom xml   --ProjectB     --pom xml   Main is the parent project of  both ProjectA and ProjectB   ProjectB has ProjectA as a dependency   Apprently m2eclipse is not happy about that depedency   As soon as I remove the dependency of ProjectA from ProjectB s pom file all the maven dependencies are found by eclipse   - com company myproj app 6 6 0 jar Missing  ---------- 1  com company myproj main pom   myproj version  ---------- 1 required artifact is missing  for artifact  com company myproj main pom     myproj version  from the specified remote repositories  apache-incubating  http   people apache org repo m2-incubating-repository   releases true  snapshots true   central  http     repo1 maven org maven2  releases true  snapshots false    However  I still need ProjectB to have that dependency for ProjectA   The error message seems to be m2eclipse looking for ProjectA in a remote repo   Project A should only be in  m2 directory  but I m not sure how to tell m2eclipse to look there     I think this may be just a m2eclipse specific issue because using mvn from the command line works fine and like I said previously  netbeans loads the projects and dependencies just fine

User · Answer

I had problems with using m2eclipse  i e  it did not appear to be installed at all  but I develop a project using IAM - maven plugin for eclipse supported by Eclipse Foundation  or hosted or something like that    I had sometimes problems as sometimes some strange error appeared for project  it couldn t move something  but simple command  run from eclipse as task or from console    refresh  F5  solved all problems   mvn clean   However please note that I created project in eclipse  However I modified pom xml by hand

User · Answer

One of the reason I found was why it doesn t find a jar from repository might be because the  pom file for that particular jar might be missing or corrupt  Just correct it and try to load from local repository

User · Answer

For me maven was downloading the dependency but was unable to add it to the classpath  I saw my  classpath of the project it didnt have any maven-related entry  When I added    lt classpathentry kind  con  path  org eclipse m2e MAVEN2 CLASSPATH CONTAINER   gt    the issue got resolved for me

User · Answer

This could be a problem if you are using a custom  Settings xml    with a different  lt localRepository gt  configured in it   Eclipse will be using the default installation of MAVEN  and will be using the default location for the User to look for the local Maven repository  which on Linux systems would be   home   USER   m2    Eclipse can be easily configured to use the customized  Settings xml   by doing the following  Goto -  Window -  Preferences -  Select  Maven  -  Select  User Settings    Under  User Settings   select the custom  Settings xml  file  for  User Settings  by clicking  Browse  and selecting the customized  Settings xml    Click on  Update Settings   if the  Local Repository  Textbox does not show the custom location from the file above  just key in the location and click  Reindex   Click  OK    After this  you could proceed to select your project from the  Project Explorer   right click  Select  Maven     Update Project   Make sure that your project is selected  ticked  in the Window  and click  OK    This should help to resolve the issue  if using custom  Settings xml  for Maven   Hope it helps

User · Answer

It sounds like your m2eclipse install is using the embedded Maven  which has its own repository  located under user home  and settings   If you open up the Maven preferences  Window- Preferences- Maven- Installations  you can add your Maven installation by selecting Add    then browsing to the M2 HOME directory     source  sonatype com     For more details see the m2eclipse book

User · Answer

Okay I fixed this thing  Had to first convert the projects to Maven Projects  then remove them from the Eclipse workspace  and then re-import them

User · Answer

I had this issue for dependencies that were created in other projects   Downloaded thirdparty dependencies showed up fine in the build path  but not a library that I had created   SOLUTION  In the project that is not building correctly  right-click on the project and choose Properties  and then Maven   Uncheck the box labeled  Resolve dependencies from Workspace projects   hit Apply  and then OK   Right-click again on your project and do a Maven- Update Snapshots  or Update Dependencies  and your errors should go away when your project rebuilds  automatically if you have auto-build enabled

[eclipse] m2eclipse not finding maven dependencies, artifacts not found

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