I have a web app built with Maven.
Most of the time, I built the application using Intellij IDEA, but now I want to import the application in Eclipse to see something in this IDE.
After mvn eclipse:eclipse, I add in Eclipse the app, but when I try to add the app to the server (tomcat), I receive:
There are no resources that can be added or removed from the server
Solutions?
You need the project to have a Eclipse Dynamic Web Module facet. You can try doing this via the project properties dialog and looking at project facets, then clicking the appropriate check box. This may not be available however, so you may need to do the next thing.
Create a backup of your project and follow the directions at dzone.com. This'll allow you to modify the project facets via your eclipse .project file.
Keep in mind, once you add those facets, you cannot change them back via Eclipse. Definitely make sure you have a backup before starting.
This step worked for me:
Right-Click on the Project Name, then
Maven-->Update Project..
Click OK
After doing this I was able to see my project in Add/Remove Programs.
As mentioned somewhere else adding Eclipse WTP didn't do any good, however I performed the above step after I had already added Eclipse WTP, so I am guessing that may not be needed.
This was done for Eclipse Juno.
Hope this helps someone.
Edited: You can follow this link as above mentioned I think might have needed WTP and that add a lot of other things into the workspace.
http://blog.teamextension.com/maven-as-eclipse-dynamic-web-module-556
Check whether Maven Integration for Eclipse WTP is installed. If not, install it from Eclipse Marketplace
After installation restart Eclipse
Right click your project and Maven--> update project configuration
Delete tomcat and re create tomcat (clean tomcat,add your project,publish and enjoy)
I've got Tomcat 6, Java 1.6, and was trying to get it to work in Eclipse Juno Service Release 1's "internal server" (whatever that's called.) Here's what I did that worked for me:
(Found these instructions at http://www.mkyong.com/eclipse/eclipse-ide-tomcat-version-6-0-only-supports-j2ee-1-2-1-3-1-4-and-java-ee-5-web-modules/)
I should point out that I followed ClutchDude's instructions to make my project a Dynamic Web Module facet. It didn't work on its own for me, but maybe it was part of making it work in the end.
Using Eclipse (or other text editor), open the file
.settings/org.eclipse.wst.common.project.facet.core.xml
Find the line that reads
<installed facet="jst.web" version="3.0"/>
3.0 is for Tomcat 7.x (so says mkyong.) Change it to 2.5 (or 2.4).
I restarted Eclipse and it worked for my project.
The reason why this is happening is because eclipse by default looks for the deployment descriptor in the folder {project.home}/Webcontent/WEB-INF/web.xml where as the Maven puts them in src/main/webapp/WEB-INF/web.xml.
So when you are trying to add your project onto the server eclipse cannot find a deployment descriptor and hence you get the annoying message.
This can be solved by adding the following entries in .settings/org.eclipse.wst.common which can be found in
Project home folder in your workspace if it is a new maven project.
The folder where you already imported from if you are using Import -> Maven projects.
Make the following changes in to the org.eclipse.wst.common
wb-resource deploy-path="/" source-path="/src/main/webapp"/. Add this entry.
Edit --> property name="java-output-path"
Please check the following link from more details. http://java.dzone.com/articles/webapps-eclipse-and-maven.
The comments section has an excellent example with a working project.
This issue was fixed for me my installing additional eclipse modules. in particular, the ones related to m2e-wtp. just do a search for m2e in the plugins search listing for your version of eclipse
If you face an error like "There are no resources that can be added or removed from the server",
then
1) Go to the META_INF of your websvcsEAR and go to the application.xml.
2) Goto modules-> clickDetails and add the module that is existing. i.e., some EAR which your project demands.
3) Click ok
4) Now go to your server -> right click -> add and remove -> add your EAR.
Maybe you don't need add your application to the server's configuration. I think that you must use m2e eclipse plugin in order to launch the app.
For example, in your eclipse you will see a contextual menu called "Run as" if you right-click on your pom file. You can clicking on "Maven build" and Maven will download all the information needed to start tomcat.
I hope this helps you.
I used
mvn eclipse:eclipse -Dwtpversion=2.0
in command line in the folder where I had my pom.xml. Then I refreshed the project in eclipse IDE. After that I was able to add my project.
I was able to resolve this by removing my EAR project from my Eclipse workspace, then re-importing it.
Well, with a Spring and maven project, i got it that way:
Eclipse Version: 2019-06 (4.12.0)
Java 1.8
Tomcat 7
Yes, go to Project Properties >> Facets >> select Dynamic Web Module but dont apply yet!!!
Right under, it should appear a link Further Configuration Available. Click on it, otherwise one will have to edit .settings/org.eclipse.wst.common.component manually. Update source directory to src/main/java. (source)
Then in Facets window check Java - mine was pointing to 11 even though i don't have Java 11 installed or configured like a JRE runtime. I could only add/remove when changed to 1.8. (source). Note: That was really the problem, why don't Eclipse get this configuration automatically from the project?
Finally Eclipse creates some directories like WEB-INF and META-INF, just delete them.
Related
I am trying to follow a tutorial, and I am told to:
1- Get the source code for the Java EMV Reader library from http://code.google.com/p/javaemvreader/ and build it.
2- Drop the resulting jar file in lib/.
3- Import the project in Eclipse and build it.
I right click the java files, and choose run as but don't get an option to run as Java Application. I also can not export the files as a JAR file. I have enclosed an image of what I have
After the first comment, I right clicked on my project, and under Maven, chose the option "configure as Maven" project. ( Thank you so much; this must be one of the fastest resolutions in the world )And I can now run the project. I get the window in my pic2, which I have attached. I don't however know what step 2 of the above instructions means. I don't see a lib/ folder. And the project he is refering to in step 3 is on git. Any ideas on what he means? ![pic2]!1
Eclipse projects have a "type" and that controls what tools are available. You probably created a "Basic Project" which means there are no compilers or other Java tools associated with it. You would want to create a Java Project in Eclipse.
That project does not seem to have Eclipse .project and .classpath files checked into the repository. It does look to be a Maven project however. So you would either want the m2eclipse plugins installed, and check this out as a Maven project, which would handle configuring everything else, or you want to use the Checkout As ... option and use the wizard to create a new Java project to checkout.
These are more Eclipse IDE questions than SVN or Subclipse questions.
What is the advantage with not having a build path in eclipse? Why is that setting default when it's like something you'd never use? It seems eclipse indigo was developed to make software development as obscure as possible. I just checked out a fresh copy of the project I checked in (called dungeonworld) this afternoon from another computer and automatically nothing works, can't compile, can't choose build path, can't add jre, can't add jdk, can't add that to project properties.
Is my eclipse broken? I can't believe this is happening, such an easy thing not feasible.
Nothing above solutions worked for me so i tried below
Right click on project >> properties >> project facets >> click on java
It looks like you did not add Eclipse project metadata files to your source control system, so Eclipse doesn't know what your build path is or whether it is even a java project. You can see that the little folder on your dungeonworld project is missing the little 'j', which means Eclipse doesn't think it's a java project.
Go back to your other computer and look for the following files in your original project root...
.project
.classpath
.settings/*
Make sure all of the end up in your source control system or nothing will work right.
I have same problem, but i have solved
project right click -> properties -> java build path -> src/main/sources
all remove items on "Excluded", and then that item turn the status "(None)"
I tried below steps and it works for me.
Right click on project >> properties >> project facets >> click on java
Eclipse has a build path.
It's stored in a (by default hidden) .classpath file in your project.
You can also access it through the UI in project properties (right click on your project, properties, java build path).
Well, this is probably not your problem, but similar is happening if you are in Eclipse different perspective (for example for Python).
vs.
There where no entrys after right click on my projekt in Eclipse. How to click something, wenn build path entries are missing. So my Eclpise didn't detect my java project. I used following Maven command and after that I cleaned the project too. Now Projekt works as expected. So...
If you are using Maven, try mvn eclipse:eclipse in cmd console in your project directory! Make sure to use the path to your Maven folder for the command.
For example:
cd C:\yourEclipseProject\
C:\yourPathToMaven\apache-maven-2.2.1\bin\mvn eclipse:eclipse
This was helping me. After unsuccessful web research, a coworker told me this tip.
I just had a similar problem and I figured out that I had been choosing General Project instead of Java Project while creating a project. After I chose Java>Project it solved my problem. Maybe it'll solve yours as well.
After choosing that, eclipse automatically included java libraries as well.
It's not a good practice to commit IDE related files into source control. What if someone in team uses different IDE? It might have been only option at a time when OP asked this question.
New versions on eclipse (4.x) takes care of this automatically. Probably by observing what kind of source and build files you have in your project.
Don't know the reason. But this works for me, so posting it.
Right click on project -> 'Properties' -> 'Java Build Path'.
I am struggling with maven in Eclipse even though I have m2e.
I checked out a maven project from CVS and cannot navigate anywhere. If I try References > Project, I get a pop up saying:
"Problems opening an editor Reason: services does not exist".
services is the name of the main project, which has sub projects within it. It all builds successfully so I am not sure why Eclipse does not work.
I suspect something related to classpath but have no idea how to edit it since it is not available from the project's properties. I actually tried to manually create a .classpath file but it did not help.
I also converted the project to a maven project but that did not help either.
Any ideas? I am using Eclipse JUNO.
I figured out my issue. I had to check out the project from CVS. Then (that's the important part), perform a maven import of an existing project within eclipse. That created maven "ready" projects where I could use all of the IDE's functionality.
Yes, you're right. If you import directly from a repository, hovering, linking and opening declarations isn't gonna work. Your solution is right, although another one more direct is use the "File->New->Other->Maven->Checkout Maven Projects from SCM". If then, you have problems because you can't select any SCM type, check Checkout Maven project from SCM - no connectors. If with connectors installed you still have problems: http://forum.springsource.org/showthread.php?102665-SCM-types-not-available-in-Checkout-Maven-Projects-from-SCM.
If you have checked out project from svn, project checked out is not generally a eclipse project thats why general functionality of eclipse does not work for the same.
To achieve the same functionality of eclipse like eclipse reader and all other shortcuts,we have to convert the checked out project to eclipse project.
Steps to Convert checked out project to eclipse project:
Right Click on Checked-out Project.
Point to Configure.
Click on Convert to Maven Project.(if checked out project is maven project)
These steps will convert the project to Maven project.
All the eclipse functionality will work for the same.
In addition to ensuring that the projects are configured as Maven projects, you may also go to Project Properties (right-click on the project in Package explorer) > Project References, and add projects in the workspace that the selected project may have references to.
I had this problem, too.
It looks like after a search-in-workspace Eclipse opened a wrong file.
I pressed Strl+Shift+H (Open Type in Hierarchy), typed in the class name, and opened it. The file opened in a new tab, and everything was navigable again.
The difference in icons is:
I am facing a problem in setting my eclipse project.
The problem is whenever I am creating a new project and import the code.Eclipse is not resolving the packages which are present in the jar files which are present in the C;/..../user/.m2/repository.
Hence it's giving a lot of compilation errors until I add all the required jar files manually in the build-path by going to "Add External Jars"
I saw that M2_REPO is present in my Eclipse classpath.But still it is not resolving the packages.
Please suggest how this problem can be resolved.
Gaurav
I've been having a similar error in Eclipse on OSX. In Eclipse on the Mac, there is no "Maven" entry when you right-click on a project in the explorer.
However!
I just discovered that if I right click and then click "Validate", it suddenly magically resolves all the dependencies. No idea why, but maybe this will help.
I've had this issue on Eclipse Kepler EE which comes prebuilt with m2e, I finally got it working by doing the following on each project:
Right click on the Project
Select Properties
Select Maven
Uncheck the option that says: Resolve Dependencies from Workspace projects
It should pop up with a box that says Maven setting has changed. Do you want to update project configuration. Click Yes to this.
To confirm:
Right click on the project
Select Properties
Select Java Build Path
Check the Libraries tab under Maven dependencies that all the jar you
expected are now there.
close your project, and remove your project settings files: .project, .classpath, .settings/. Then re-import this project. It will be ok.
Though this answer is late. But it can help the future audience.
You can give it a try using Project(Right-Click) -> Maven -> Update Project. To select all or the number of projects you want to update.
This worked for me.
Have you put all needed dependencies in the pom.xml? Even if the Jars are already in your local repository, each project needs its dependencies mentioned in the pom.xml to resolve the dependencies. If you do that, m2eclipse will automatically resolve the build path.
Another possibility. Are you running Eclipse using JDK or JRE - the default is JRE. You will see a warning in Eclipse console, if so.
maven eclipse plugin will not work correctly unless run with JDK.
I just had a similar problem. The JDK was there, the problems view was set to Show All, and yet there were hundreds of unresolved type errors. Not even Refresh (F5) would work.
In the Project|Properties|Java Build Path|Libraries window I was seeing only the JRE System Library, but not the desired "Maven Dependencies" entry. And "Maven Dependencies" was also missing from the Package Explorer view as well.
I finally fixed this by right clicking on the project in the Package Explorer, selecting Maven from the menu, then selecting "Update Project Configuration." This added "Maven Dependencies" and all the errors went away.
This was nice because prior to this fix I had to treat Eclipse like a dumb editor and run mvn compile on the commandline to find errors.
My company wants to migrate to Eclipse, I was wondering what options besides an Ant build are there to move our projects from Netbeans to Eclipse.
Tooooo ... oooo .... oooo late to answer but this works
http://www.coderanch.com/t/458555/vc/Export-Netbeans-Eclipse
i was looking for an answer my self and saw this question :)
Quoting:
Here is a little tutorial on "Importing projects from NetBeans to Eclipse".
Please try this:
PART I - NETBEANS
Open NebBeans.
Create a java project named "ToEclipse".
Build this project.
Then, NetBeans has created several folders. The important folders to us are (in my computer):
c:\User\Almir\NetBeans\ToEclipse\dist
c:\User\Almir\NetBeans\ToEclipse\src
PART II - ECLIPSE
Go to Eclipse.
Create a java project in Eclipse named "ToEclipse".
Then, Eclipse has created several folders. The important folders to us are (in my computer):
c:\Users\Almir\Eclipse\ToEclipse\bin
c:\Users\Almir\Eclipse\ToEclipse\src
PART III - WINDOWS EXPLORER
Go to Windows Explorer.
Copy the FILE "ToEclipse.jar" at c:\Users\Almir\Eclipse\ToEclipse\bin folder.
Past it in c:\Users\Almir\Eclipse\ToEclipse\bin
Copy the FOLDER "toeclipse" at c:\User\Almir\NetBeans\ToEclipse\src folder.
Past it in b) c:\Users\Almir\Eclipse\ToEclipse\src folder.
PART IV - ECLIPSE
Go to Eclipse.
Press F5 to refresh the view.
Verify that your project is there (under ToEclipse/src/toeclipse).
Say "Oh! Yes! It works!".
Run the project.
Return to 3) how many times you want!
I hope that helps you!
Kind regards,
Almir Campos
São Paulo, Brazil.
I found another easier way that worked for me at least since I had problems importing the Ant build script due to a missing javac.
Say you have your Netbeans project (src, build, dist etc) in D:/blah/
In Eclipse go to File->New->Java Project
Uncheck 'Use default location' and instead use the path where the Netbeans project is (D:/blah/) Eclipse should automatically populate everything else and link to the files as well.
I have recently 'migrated' from Netbeans to Eclipse and found it amazingly easy. The reason it was easy though is that all of our projects are IDE independent standard ant and ivy build scripts that most modern IDE's can understand. This way, we all get to use the IDE we like (yes - emacs and vi too) and their are no 'migration' issues.
The reason that I am pointing that out is that, if it is not already that way, I would recommend that you take that same path on your migration. Just create some standard ant (and ivy) build scripts. Eclipse knows how to slurp those in and there will be no future migration issues.
in MY PERSONAL experience, it was easy. I was migrating a java desktop app from netbeans to eclipse. Just copy my projects into the workspace, create the project in eclipse as a new java project and put the same name of the project in netbeans (use your workspace as location). It will recognize the project structure ( Eclipse Helios, Netbeans 6.8 )
Hope this helps. I don't know how hard it turns if you have another kind of project.
I just migrated a Netbeans 7.0 JSF web project to Eclipse. And it was easier than i would have imagined.
What i did was:
List item
Clean and build my JSF application in netbeans
Close netbeans and open Eclipse(i use galileo)
Create a new Dynamic Web Application.
Right click on the new web application in project explorer and go to import then to .WAR file
It then ask whether i want to import any of the jar files(libraries) as projects and i do not select any and just click finish.
Copied my netbeans src(source) folder /src/java/ to
the Eclipse src folder. e.g netbeansproject/medman/src/java/com to eclipseSpace/medman/src/
Next setup your server in Eclipse(i use tomcat 6.0).
And voila! it is done.
You can also check out this link. http://www.coderanch.com/t/458555/vc/Export-Netbeans-Eclipse
At my company people pretty much use either eclipse or Netbeans. I myself use both of them for various tasks. We write our own ant scripts to build and package our source so it does not matter what IDE a person uses. I would suggest that you create your own ant script to build your source, that way you won't have to depend on an IDE specific build script.