How to import a maven project in eclipse? - eclipse

I have a (command-line) maven based project which just works great (mvn clean, mvn verify, install all perfect)! I want now import this into eclipse not as maven project but regular eclipse project.
I did it but I have a dependency issue which I solved by just copying all the jars created into the .m2 folder to another folder into my eclipse workspace. Then I've added all these jars to my project.
everything ok!
Question is: I have the feeling that this is not the best way to manage the dependency in eclipse ... what do you suggest? best practices

If you have a simple java project which is made up of only one module, using Eclipse is very simple. To generate the Eclipse project files from your POM you execute the following command:
mvn eclipse:eclipse
If you have created or checked out the project with Eclipse, you only have to refresh the project in your workspace. Otherwise you have to import the project into your Eclipse workspace (From the menu bar, select File > Import > Existing Projects into Workspace). In the latter case the project (directory) should not be located in your workspace, because Eclipse might come into trouble, especially if you want to use Eclipse as the scm client.

Related

reimporting maven project to Eclipse without m2e

I have modular maven project which I firstly imported to eclipse as regular maven project (import => maven => existing maven project). This does not work correctly for our project (many errors etc.).
So I decided to remove this project from eclipse and import it again but as general project (use mvn eclipse:eclipse to generate eclipse project files and then import => general => existing projects into workspace).
But, even when I imported it as general project, Eclipse still import it as maven project (small M icon next to project name in package explorer). What I tried before importing (without success):
remove .settings directory from each maven module
remove .project file from each maven module
Do you know how to solve this problem? How can I import maven project as general project when it was before imported as maven project?
One solution I found is to disable Maven nature of project.
Projects which was imported as Maven project can be "converted" back to "general" project by project context menu => Maven => Disable Maven Nature

Setting up project is eclipse

I want to setup my work project in Eclipse, with following features:
1) Connect to SVN repository
2) It is a maven - multi module project
3) It is a spring project
If I import this project as Maven project I am not able to connect it to SVN repository.
If I check - out SVN repository, I am not able to set it up as Maven/Spring project.
And ideally I want to make it hot deployable, (as eclipse dynamic web project), so Development can be efficient.
How can I possibly do this.
I have setup eclipse Juno SR1 with Maven, STS, and SVN plugins.
What you can do is follow the below steps :-
Checkout from svn to your local drive.
As it is a mave nbuild project you will have the pom.xml file in the root of the project. Do a mvn eclipse:eclipse -Dwtpversion=2.0 on the project.
3.Open eclipse and go to File-->Import--> Existing projects into workspace.
This should do.
FYR see this
After the project is checked out into the Eclipse workspace, just remove the project by using the following action: -
right click at the project ---> delete ---> click ok
Please take a note, do not check the check box named "Delete project content on disk". We have just want to remove and re-import again.
All we need to do is re-importing by using the following action: -
File ---> Import ---> Maven ---> Existing Maven projects
This will help us to integrate the Maven with the SVN in Eclipse. We will see the revision information after the project name, folders, packages, classes, etc.
Anyhow to use Maven in the Eclipse, you should install the Maven Integration (m2e). Furthermore there is a useful plug-in to integrate the Eclipse WTP with the Maven as well. It is named Maven Integration for WTP.
I hope this may help.

Eclipse Indigo with m2e can't find maven dependencies in a multi-module project

I've created a multi-module project using Indigo with m2e 1.0. One of the child modules has a dependency on the other. It all builds correctly under maven.
Eclipse, however, can't find any of the classes that this module uses from the dependency .jar. The project properties shows the artifact under Maven Dependencies, but it does not show the actual .jar file itself.
I added the dependency with the Maven menu for this project.
The .project and .classpath got generated automagically at some point. I did not have to run mvn eclipse:eclipse or mvn eclipse:m2e (or whatever the goal is for m2e). The .classpath doesn't have the dependent .jar in it, but it does have org.eclipse.m2e.MAVEN2_CLASSPATH_CONTAINER.
I've tried all the options under the Maven menu (update dependencies, update configuration) and refreshing the project. I've closed and re-opened Eclipse. It still shows errors.
This makes Eclipse worthless as a Java editor in multi-module projects. I could manually add the dependency .jar in the .classpath, but this defeats the purpose of integration Eclipse and Maven with m2e.
Is there any solution for this in Eclipse?
Thanks.
The answer turned out to be the last answer to this question given by Jody Box. It's pretty bizzare that in order for Eclipse to resolve dependencies from another project in the Workspace that you have to uncheck the "Resolve dependencies from Workspace projects" checkbox.
I know mvn can be convoluted but this checkbox is doing the opposite of what it says.

Trying to understand how to work with Maven and Eclipse

I import a project into eclipse from svn and then go and run 'mvn install' from the command line and everything compiles fine. But I don't understand why the code is not compiled in Eclipse too.
From my previous experience I know that I need to go ahead in Eclipse and import "existing maven projects" to have Eclipse compile the code, I just don't understand why.
Thanks!
How have you imported the projects to Eclipse? By runnint mvn eclipse:eclipse to import them as 'Java project' or importing the maven projects directly with the m2eclipse plugin?
By default maven builds each project into a directory target in each project whereas Eclipse builds into eclipse-out. mvn install builds each maven project to create an archive (jar, war, ear etc) whereas Eclipse needs to build to be able to run the code in Eclipse.

How to clone Hibernate sources using Egit (Eclipse)?

I need help using Egit (Eclipse git integration capabilities). My goal is to have Hibernate sources in my local Eclipse. Eventually I aim for running their tests, doing some changes in the sources, issuing a git pull request (patch), etc.
Can someone explain how to clone Hibernate sources and have them as Java Project(s) in Eclipse?
All I can achieve myself is to have the sources cloned (as needed) to some specified path (the suggested path is outside of the workspace directory). Then I am puzzled trying to convert the structure into Java projects in Eclipse. I try different ways to import the project(s) using File | Import (e.g. Existing projects into workspace) or linking sources into a new created Java project. The problem seems to be the Hibernate sources are not a single maven project (not quite sure about this one either, I am new to maven) and probably not an Eclipse project at all, so Eclipse doesn't recognize the source structure at all.
It looks like it has both maven and ant builds, so you can generate Eclipse projects with both of these.
For maven you have 2 options:
Run mvn eclipse:eclipse to generate
eclipse project artifacts and then
import existing projects.
Install m2Eclipse and import Existing Maven
Project. This is the preferred
approach when working with Maven and
Eclipse.
For ant, New project->Java Project from Existing Ant Buildfile