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[m2e-users] Importing existing Maven Web Apps/Services in Eclipse 4.2 (Juno)...
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Is there something that explains how to configure a clean installation of Eclipse (4.2/Juno) to enable Maven features to recognize, build, deploy and debug an existing maven web application or service? I've looked through
http://wiki.eclipse.org/M2E and related pages but I couldn't find a complete explanation of the process.
I downloaded the latest 4.2.0 Juno J2EE installer (eclipse-jee-juno-installer-windows.exe) from Genuitec and installed the 64-bit version.
I then pulled all updates and have installed the following as listed in the "Software and Workspace Center" view:
- TestNG (6.7.0)
- Maven Integration (m2e) (2 related) (1.1.0)
- Microsoft Visual Studio Team Foundation Server plug-in for Eclipse (11.0.0)
- Eclipse EGit (2.1.0)
- EGit Plug-in Import Support (2.1.0)
- EGIT Mylyn (2.1.0)
- EGIT Project Set Support (2.1.0)
- Eclipse Java Web Development Core (3.4.1)
- Eclipse Java Web Developer Tools (3.4.1)
- Eclipse Java Web Developer Tools User Documentation (3.4.1)
- Web Page Editor (2.3.8)
- JAX-WS DOM Tools (1.0.200)
- JAX-WS Tools (1.2.0)
- m2e - Maven Integration for Eclipse (1.2.0)
- m2e - slf4j over logback logging (Optional) (1.2.0)
- Subclipse 1.8.x (5 related) (1.8.16)
- Mylyn Versions Connector: Git (1.0.1)
- _javascript_ Development Tools (1.4.1)
- WST Web Core (3.4.1)
- Eclipse Web Developer Tools (3.4.1)
- WST Web User Documentation (3.3.0)
- WST Web Services Core (3.4.0)
- Web Services Tools (3.4.1)
- WST Web Services User Documentation (3.4.1)
I deleted all existing source folders, then used the Microsoft Team Explorer Everywhere plugin to get latest application source.
Next, I go to Import->Maven->"Existing Maven Projects". The project shows up, but doesn't appear to be recognized as a web application. I right click, go to Debug As-> or Run As-> but there is no Run on server option.
I then go to <Project>->Properties->Project Facets->Convert to Faceted form... (should I really have to do this manually?) and select the following:
- Dynamic Web Module (v2.5)
-
Click "Further configuration available..."
- change content directory from "WebContent" to src/main/webapp (Maven 'convention' but not what m2e/Eclipse seems to want -- see below)
- UNCHECK Generate web.xml deployment descriptor (Already exists in my project)
- Change Java from v1.7 to v1.6
- Click OK
Now I see a "JAX-WS Web Services" node in the project, even though it isn't a JAX-WS Web service (not sure if that means anything) but I can now initiate a "Run On Server" or "Debug On Server" from the menus...yay!
However, doing "Run as->Run On Server" and selecting my Tomcat 6 server seems to deploy, but nothing happens...boo! It didn't even say it was starting the application even though it deployed according to tomcat.
After a few more hours of searching, someone listed an example with the "Content directory" as "target/<webappfolder>", presumably where the assembled web app is located after a build.
That seemed to work. However, my Maven project builds the war and names the "target/<webappfolder>" with the Maven version as part of the folder name (e.g., WebApp-1.0.1-SNAPSHOT) so if I release and/or change the version, it breaks and I can't find a way to change this folder location once it is set!!! Shouldn't the "content directory" be dynamic based on the POM?
Questions:
- Am I doing this right?
- Why doesn't m2e (or eclipse?) infer the src and/or target information it needs from the POM and content instead of me having to hold it's hand?
- Can I change the "content directory" after it is set the first time? If so, how?
- Does it really have to be this hard to import an existing maven project?
Thanks!
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