m2eclipse error

Question

I am developing a web application with Eclipse and I generate the project with a maven archetype.

When I enable maven dependency management, Eclipse mark some errors

Answer 1

The following steps worked for me:

1. Close Eclipse.
2. Navigate to user home directory. (For example: "C:\Users\YourUserName.m2")
3. Delete the "repository" folder.
4. Re-open Eclipse.
5. Click on the Maven project that has an issue and go to "Project" --> "Clean".
6. Right-click on the project and go to "Maven" --> "Update Project...".
7. Close Eclipse.
8. Open Eclipse.
9. Click on the project folder in the "Project Explorer" window (usually on the left).
10. Hit the "F5" key a few times to Refresh your project.
11. Done! These steps worked for me in Eclipse Luna. Please let me know if I can help further.

Answer 2

I had same problem with Eclipse 3.7.2 (Indigo) and maven 3.0.4.

In my case, the problem was caused by missing maven-resources-plugin-2.4.3.jar in {user.home}\.m2\repository\org\apache\maven\plugins\maven-resources-plugin\2.4.3 folder. (no idea why maven didn't update it)

Solution:

1.) add dependency to pom.xml

<dependency>
    <groupId>org.apache.maven.plugins</groupId>
    <artifactId>maven-resources-plugin</artifactId>
    <version>2.4.3</version>
</dependency>

2.) run mvn install from Eclipse or from command line

3.) refresh the project in eclipse (F5)

4.) run Maven > Update Project Configuration... on project (right click)

JAR file is downloaded to local repository and there are no errors in WS.

Answer 3

This what helped me:

1. Delete the project from eclipse (but don't delete from disk)
2. Close eclipse
3. In your user folder there is .m folder. Delete repository folder underneath it (.m/repository).
4. Open eclipse
5. Import project as existing maven project (from disk).

Good luck.

Answer 4

It must be a configuration problem. Your pom is fine.

Here's what I did. New folder, put your pom inside. Then in eclipse: import -> maven -> existing maven project. Dependencies got included in the project.

I did this using eclipse helios. I think the plugin version I am using is 0.12

You should check the maven properties in eclipse.

Answer 5

My issue was that eclipse could not find the mvn.bat file within the installation directory. The solution is to create a mvn.bat file with the following code:

"%~dp0\mvn.cmd" %*

Save that file. Place it inside the [Maven Installation Folder]\bin directory.