I am trying to figure out how to make Eclipse recognize dependencies that are retrieved using SBT? SBT download the correct dependencies and puts them in my ~/.ivy directory but eclipse doesn't see them. Is there a way to do this?
thanks
If you are using sbteclipse plugin it's achievable in a simple way. In sbt type:
reload
eclipse with-source=true
Then in eclipse, hit F5 on a project folder to refresh it. Or right-click and choose "Refresh". Just works.
This is probably not the answer you are looking for and I admit it is not elegant but it currently works for me, meaning that I think it takes less time for me to periodically do the following instead of researching and finding a more elegant solution.
I assume you are using the sbt-eclipse plugin ( https://github.com/typesafehub/sbteclipse ). When I add new dependencies to my project ( which is actually pretty rare ) I simply regenerate my eclipse project files from the plugin. The downside of this is that I have a multiple module project and after I refresh the projects in eclipse I need to re-add the inter-project dependencies in the eclipse build path editor.
Like I mentioned it is pretty hacky but all in all I really don't loose that much time doing it. It's not pretty but it works.
Best of luck,
Andy
I use the Apache IvyDE plugin for Eclipse, and I've had more luck with this approach. It's only described in the old sbt docs, but works with sbt 0.11
First, install the IvyDE plugin in Eclipse and restart.
Run the sbt command deliver-local - this will create an XML ivy file of your dependencies.
In Eclipse, under your Project/Properties - Java Build Path - Libraries, click "Add Library" and choose "IvyDE Managed Dependencies" then select the file target/scala-2.9.1/ivy-projectversion.xml
When you add a new dependency to build.sbt, run the sbt commands reload and deliver-local again. Then right-click the Ivy library for your project in the Package Explorer - it will be called "target/scala-2.9.1/ivy-projectversion.xml [compile,test]", and click the second "Refresh" menu item (between "Refresh" and "Reload Settings" - not "F5 Refresh" ).
In command prompt go to the project folder and type
sbt eclipse
This should generate the appropriate .classpath entries in eclipse project.
Go back to eclipse, select the project and press f5, this will reload the referenced libs.
All you need is execute from your project home:
sbt "eclipse with-source=true"
or enter sbt console and write:
eclipse with-source=true
BTW: I don't know if from Jan '12 something has changed but now it seems much more simple.
The following works for me:
1) close project in Eclipse
2) in my file explorer, browse to my Eclipse project, make sure hidden files are visible
3) open .classpath in a simple text editor
4) copy the bottom entry. For example, in my current project, it is <classpathentry path="/home/natalie/.ivy2/cache/org.scalatest/scalatest_2.9.1/jars/scalatest_2.9.1-1.8.jar" kind="lib"></classpathentry>
5) navigate to my .ivy folder, cache, then down to the library I have added via sbt
6) right click on jar file, select properties, copy the path and jar file name and replace it in the entry I copied in step 4
7) save .classpath
8) open my project on Eclipse
New dependency is now available in Eclipse.
Related
I have a maven multi module project which has 5 modules. Some of my modules depend on one or more other modules, I am successfully able build the project and in eclipse also I am not getting any errors. However there is one problem which is bothering me, when i ctrl + click in my code and the class is defined on some other project eclipse does not open the file in the editor. I know i can attach the source code using maven but still i wont be able to make changes to that file.
Is there any way to be able to link projects in eclipse through maven?
Is there any way to be able to link projects in eclipse through maven?
That behaviour is the default. To check if for some reason that default is not in effect for your project, right click your project (the project you want to jump from) and go to "Maven". If there is an option "Disable Workspace Resolution" the workspace resolution is switched on, meaning you can theoretically jump from that project.
If you still cannot jump, then the project you want to jump to is not in your workspace. Take into account that for eclipse to identfy one project as dependency of another, everything including version must match.
Also check what rest_day said. You must have the projects importet as maven projects, but running eclipse:eclipse is not required anymore with current (up to ca 2 year old) eclipse.
Did you import the projects as Maven projects?
Also, could you go to the root of the project and run mvn eclipse:eclipse
eclipse:eclipse
Full name:
org.apache.maven.plugins:maven-eclipse-plugin:2.10:eclipse
Description:
Generates the following eclipse configuration files:
.project and .classpath files
.setting/org.eclipse.jdt.core.prefs with project specific compiler settings various configuration files for WTP (Web Tools Project), if the parameter wtpversion is set to a valid version (WTP configuration is not generated by default)
If this goal is run on
a multiproject root, dependencies between modules will be configured
as direct project dependencies in Eclipse (unless useProjectReferences
is set to false).
Instead of Ctrl+Click, click on the identifier and press F3. If you now see a red text reading "Current text selection cannot be opened in an editor", you've been hit by this bug.
See this question for a solution: How do I get rid of "Current text selection cannot be opened in an editor" in Eclipse?
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.
I have imported my maven project in eclipse using Import Maven project. It got import in eclipse project explorer, but all the source folder are opening as files and folders, its not opening as java source folder. Since its opening as files and folder, it doesnot have compilation unit, found very difficult to code using it.
What do I need to do inorder to make the source folder as java source folder so that I can code easily?
Select the project and from the context menu choose Maven -> Update Project Configuration (This menu item gets reworded across various maven releases so look for something similar). You may also need to choose Update Dependencies.
In the shell/command line, execute mvn eclipse:eclipse
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.
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.