I am using Eclipse as my IDE and want to build a maven program, but I see that neither my maven clean or maven install is working
For maven clean,I get the error:- "Failed to parse plugin descriptor for
org.apache.maven.plugins:maven-clean-plugin:2.4.1 "
I also tried the help mentioned in the link
[ERROR] For more information about the errors and possible solutions, please
read the following articles:
[ERROR] [Help 1]
http://cwiki.apache.org/confluence/display/MAVEN/PluginDescriptorParsingException
but it is not helping
Also my maven install is not working,it shows the following error:
] Failed to parse plugin descriptor for org.apache.maven.plugins:maven-resources-plugin:2.5
I had tried all the approaches mentioned in similar issues which include deleting the directories u nder .m2 folder, deleting .m2 folder, re-installing apache-maven on my system but nothing is working.
And when I run the same maven program under intelliJ, I could see the jar names but when I click on them it shows no contents which means they are not getting downloaded properly...'
So not able to work on my java maven project.Please help.
what is the fix for such environmental issues.
Even I tried re-installing eclipse, intelli J but nothing helps.
The issue got resolved by following the steps mentioned at:
https://issues.sonatype.org/browse/MVNCENTRAL-299
try to download appropriate maven version from https://maven.apache.org/download.cgi. and follow installaion steps mentioned.
set the "M2_HOME" and "MAVEN_HOME" as environment variables pointing to maven installation directory.restart your machine.
set the maven settings in eclipse through preferences tab.
Related
A multi-module maven project will be buit successfully from the command line using mvn clean install and is loaded successfully in vscode without any compilation errors.
When the same project is opened in Eclipse (version Version: 2022-09 (4.25.0), Build id: 20220908-1902), I see compilation errors for dependencies not resolved for example:
The import com.ibm cannot be resolved
I tried everything to resolve this error, nothing worked, for example:
Update maven project
Project / Clean
Remove maven feature, delete the project, reimport, and convert back to maven
The strange thing is that if I delete the repository folder from <user-home>\m2.\repository and make a simple change to any pom.xml file, the entire repository folder is downloaded. Also, I located the JAR file using VSCode (ctrl-click) and I can see the related JAR logEnglish-1.0.jar in the local .m2 repository folder <user-home>\.m2\repository\logEnglish\logEnglish\1.0\logEnglish-1.0.jar.
The problem is that only Eclipse is reporting compilation errors and a lot or maybe all of the maven dependencies are not resolved. This is also affecting the debugging option and it breaks due to such compilation errors.
Another thing I noticed is that the Maven Dependencies folder is not showing on the Project Explorer no in Package Explorer, but I can see Maven Dependencies entry in Project Properties -> Configure Build Path -> Libraries.
Please help resolve this issue so that I can clear the compilation errors in Eclipse.
Update 1:
I created a simple parent/child pom with one inner module. I was able to reproduce the problem right away.
See attached snapshots for details.
The compile errors will show only when you open the parent project. If you open the inner module directly as a separate project, no compile errors will show and I can run and debug the project. However, if I try to debug the parent project, I will get a warning due to compile errors, and I can run the project only and only after I added the jar of the inner module to the classpath of the debug configuration. If I don't add the jar file, I will get this error Error: Could not find or load main class training.FirstProjectClass. The project is being built successfully using mvn clean install and that's why I can run the project. If I run mvn clean then I cannot run the parent project.
Also, notice how the maven dependencies folder will show if you open the inner project directly, but, it won't show if you open the parent project.
In addition, I noticed if I add the inner project to the classpath of the debug config then it works also without building the project and without generating the jar file using mvn clean install.
Based on the above, the problem boils down to:
How we can resolve the dependencies of the inner modules when you open the project using the parent maven project?
If we can resolve the errors, then we can run without seeing the warning, and we have the assurance that the project is clear before running the mvn clean install command.
I'm having problems trying to just create a Maven project using Scala (v2.11.6) within Eclipse (Luna). The instructions here says to install both plugins below.
Maven Integration in Eclipse
m2eclipse-scala connector
Both plugins can be installed by using the m2eclipse-scala update site. So here's what I did in my first attempt.
Download Eclipse Luna (for JavaEE developers)
Install "both" plugins above by using the m2eclipse-scala update site.
When Eclipse loads up, I attempt to create a Maven project, and the archetype I want to use is Group Id=net.alchim31.maven, Artifact Id=scala-archetype-simple, Version=1.5. However, this archetype never shows up when I enter in "scala-arch" in the filter text field.
The only project I see is the one with Group Id=org.scala-tools.archetypes, Artifact Id=scala-archetype-simple, Version=1.2. When I select this archetype to use, I get a bunch of error messages in Eclipse.
error while loading ConsoleRunner, Scala signature ConsoleRunner has wrong version expected: 5.0 found: 4.1 in ConsoleRunner.class
error while loading JUnit4, Scala signature JUnit4 has wrong version expected: 5.0 found: 4.1 in JUnit4.class
error while loading Specification, Scala signature Specification has wrong version expected: 5.0 found: 4.1 in Specification.class
In my second attempt, I try to download the pre-packaged bundle (Scala IDE for Eclipse). Again, when I attempt to create a Scala Maven project, I don't see the Maven archetype for Group Id=net.alchim31.maven (only for Group Id=org.scala-tools.archetypes).
Any ideas on what I'm doing wrong here? Or where I can find a vanilla Scala Maven project to import/modify and use for my own purpose?
Here's how I got it to work. It seems all the archetypes aren't available, so based on this answer, I created a remote catalog
Before
So do this
Go to [Windows] → [Preferences] → [Maven] → [Archetypes] → Add Remote Catalog and create the catalog, then Apply
For copy-pasting:
Catalog File: http://repo1.maven.org/maven2/archetype-catalog.xml
Description: Remote Archetypes
Go back to creating a new Maven project. Select the Remote Catalog from the dropdown. It will take a few moments to gather all the archetypes. You can see the progress at the very bottom right of the IDE. When it's done, you should be able to see the archetypes
After
Create your project with groupId and artifactId and such.
Right click the project, then from the context menu [Run As] &rarr [Maven Build]. In the dialog, type clean package into the goals. The run. The project should build and run the tests.
For me at first I got an error on the build. It was because my default environment is using Java 8. I'm pretty new to Scala, so I'm not sure is there is a problem with Scala and Java 8 or not (I think it's the Scala version in the pom (2.10.0)). But what I did to get it to work was just change the Java version used in the IDE to Java 7.
Basically just go to [Windows] → [Preferenes] → [Java] → [Installed JREs] → Add → [System VM] → Next → Directory → Find the directory of the Java home (version 7) → Finish → Then in the list tick Java 7.
Then build again. It should work. Good Luck!
One point I want to add, If you are getting following error while installing the archetype showed in image 1
Can't resolve Archetype
org.glassfish.jersey.archetypes:jersey-quickstart-webapp:2.21
org.eclipse.core.runtime.CoreException: Could not resolve artifact
org.glassfish.jersey.archetypes:jersey-quickstart-webapp:pom:2.21
Image 1:
Then before procedding with the solution specified above, try to complete these steps in eclipse.
I faced the same problem and chanced upon this SO question, as well as the answer, given by #peeskillet (many thanks). I am using:
Maven 3.3.3
Eclipse Luna Scala IDE 4.0.0.-vfinal-20150305-1644-Typesafe
Scala 2.11.6
JDK 1.8
After following the steps exactly as given here, I hit a wall. When I chose the right archetype (net.alchim31.maven), I was greeted with this error:
Could not resolve artifact net.alchim31.maven:scala-archetype-simple:pom:1.5
Suspecting that the maven embedded in eclipse was acting funny, I visited [Windows] -> [Maven] -> [Installations] and added local installation of maven (whatever is set to M2_HOME in my shell). But, no luck!
Exasperated, I visited this site: Scala Doc and switched back to command-line as this page instructs. Surprisingly (to me, at least), it worked. A maven-Scala project was created in the present directory, which I could import into Eclipse.
Just so that I am not misunderstood, I am not suggesting that #peeskillet's answer is wrong. Just wanted to share another way of creating a maven-scala project on Eclipse, in case it helps someone. I have not yet understood, why Eclipse-Scala-IDE is yet to give that 'Aha' feeling.
After you have successfully created the scala-maven project as described above, you will probably see an error "Type not found: type JUnitRunner specs.scala". In that case, manually add the following XML snippet to your pom.
<dependency>
<groupId>org.specs2</groupId>
<artifactId>specs2-junit_${scala.compat.version}</artifactId>
<version>2.4.16</version>
<scope>test</scope>
</dependency>
Moreover, to avoid errors when running mvn test,
[ERROR] scalac error: bad option: '-make:transitive'
You also need to delete the following line from the pom.xml file:
<arg>-make:transitive</arg>
I have a maven project in which i am getting the following error. I am using eclipse IDE
An internal error occurred during: "Importing Maven projects".
Unsupported IClasspathEntry kind=4
I have followed below steps for resolving this error. The reason for this error is class path file located in your project folder.
Disable Maven Nature for your project ( If in eclipse, right click on the project --> Maven --> Disable Maven Nature).
Delete the class path file in your project folder.
Re- enable the Maven Nature Again (right click on project --> configure --> Convert to Maven Project).
Try to Maven clean, install and Run the project.
Here's a better answer: stop using eclipse.
Here's the eclipse bug page:
https://bugs.eclipse.org/bugs/show_bug.cgi?id=394042
They seem to have no interest in fixing this issue, so if you require|prefer to use the command line for projects, then really there is no fix but to quit eclipse.
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 in the pom file, this error is:
Multiple annotations found at this line:
- Execution default-testResources of goal org.apache.maven.plugins:maven-resources- plugin:2.4.3:testResources failed:
Plugin org.apache.maven.plugins:maven-resources-plugin:2.4.3 or one of its dependencies could not be resolved: Failed to collect
dependencies for org.apache.maven.plugins:maven-resources-plugin:jar:2.4.3 () (org.apache.maven.plugins:maven-resources-
plugin:2.4.3:testResources:default-testResources:process-test-resources)
- Plugin execution not covered by lifecycle configuration: org.apache.maven.plugins:maven-compiler-plugin:2.3.2:compile
(execution: default-compile, phase: compile)
- CoreException: Could not get the value for parameter compilerId for plugin execution default-compile:
PluginResolutionException: Plugin org.apache.maven.plugins:maven-compiler-plugin:2.3.2 or one of its dependencies could not be
resolved: Failed to collect dependencies for org.apache.maven.plugins:maven-compiler-plugin:jar:2.3.2 ():
ArtifactDescriptorException: Failed to read artifact descriptor for org.apache.maven:maven-plugin-api:jar:2.0.6:
ArtifactResolutionException: Failure to transfer org.apache.maven:maven-plugin-api:pom:2.0.6 from http://repo1.maven.org/
maven2 was cached in the local repository, resolution will not be reattempted until the update interval of central has elapsed or
updates are forced. Original error: Could not transfer artifact org.apache.maven:maven-plugin-api:pom:2.0.6 from/to central (http://
repo1.maven.org/maven2): null to http://repo1.maven.org/maven2/org/apache/maven/maven-plugin-api/2.0.6/maven-plugin-
api-2.0.6.pom
- CoreException: Could not get the value for parameter compilerId for plugin execution default-testCompile:
PluginResolutionException: Plugin org.apache.maven.plugins:maven-compiler-plugin:2.3.2 or one of its dependencies could not be
resolved: Failed to collect dependencies for org.apache.maven.plugins:maven-compiler-plugin:jar:2.3.2 ():
ArtifactDescriptorException: Failed to read artifact descriptor for org.apache.maven:maven-plugin-api:jar:2.0.6:
ArtifactResolutionException: Failure to transfer org.apache.maven:maven-plugin-api:pom:2.0.6 from http://repo1.maven.org/
maven2 was cached in the local repository, resolution will not be reattempted until the update interval of central has elapsed or
updates are forced. Original error: Could not transfer artifact org.apache.maven:maven-plugin-api:pom:2.0.6 from/to central (http://
repo1.maven.org/maven2): null to http://repo1.maven.org/maven2/org/apache/maven/maven-plugin-api/2.0.6/maven-plugin-
api-2.0.6.pom
- Execution default-resources of goal org.apache.maven.plugins:maven-resources-plugin:2.4.3:resources failed: Plugin
org.apache.maven.plugins:maven-resources-plugin:2.4.3 or one of its dependencies could not be resolved: Failed to collect
dependencies for org.apache.maven.plugins:maven-resources-plugin:jar:2.4.3 () (org.apache.maven.plugins:maven-resources-
plugin:2.4.3:resources:default-resources:process-resources)
- Plugin execution not covered by lifecycle configuration: org.apache.maven.plugins:maven-compiler-plugin:
2.3.2:testCompile (execution: default-testCompile, phase: test-compile)
My pom file is the following:
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.lala.sarasa</groupId>
<artifactId>msrdecision</artifactId>
<packaging>war</packaging>
<version>1.0-SNAPSHOT</version>
<name>msrdecision Maven Webapp</name>
<url>http://maven.apache.org</url>
<dependencies>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>3.8.1</version>
<scope>test</scope>
</dependency>
</dependencies>
<build>
<finalName>hello</finalName>
</build>
</project>
Any idea?
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.
I also had same problem with Eclipse 3.7.2 (Indigo) and maven 3.0.4.
Eclipse wasn't picking up my maven settings, so this is what I did to fix the problem:
Window - Preferences - Maven - Installations
Add (Maven 3.0.4 instead of using Embedded)
Click Apply & OK
Maven > Update Project Configuration... on project (right click)
Shutdown Eclipse
Run mvn install from the command line.
Open Eclipse
Those steps worked for me, but the problem isn't consistent. I've only had with issue on one computer.
Just go to your user folder, inside it there's a ".m2" folder, open it and delete the folder "repository". Go to eclipse, clean your project, then right click->Maven->Update Project .. and you are ready to go.
I solved this by running mvn -U install from command line and then "Maven->Update Project" from Eclipse
In this particular case, the solution was the right proxy configuration of eclipse (Window -> Preferences -> Network Connection), the company possessed a strict security system. I will leave the question, because there are answers that can help the community. Thank you very much for the answers above.
In my case the problem was solved by Window -> Preferences -> Maven -> User Settings -> Update Settings. I don't know the problem cause at the first place.
This what helped me:
Delete the project from eclipse (but don't delete from disk)
Close eclipse
In your user folder there is .m folder. Delete repository folder underneath it (.m/repository).
Open eclipse
Import project as existing maven project (from disk).
Good luck.
I would add some points that helped me to solve this problem :
When all other missing archetypes have been indeed installed into your local repository, and the only remaining and abnormally sticking error is this (damned ..) one, whereas the maven-filtering-x.jar is present in his directory, the problem could finally only be solved by creating a new work space as was suggested by Dan in his response ( http://mail-archives.apache.org/mod_mbox/incubator-isis-dev/201112.mbox/%3CCALJOYLFfSJ5Xc_z7a7N+S2_kabuVv0ykv7A5afQaJJOb99iCdg#mail.gmail.com%3E ) (thanks).
Having the local repository OK, on the other hand, turned out to be quite costly, as many archetypes would not get loaded, due apparently to timeouts of m2eclipse and very unstable communication speeds in my case.
In many cases only the error file could be found in the folder ex : xxx.jar.lastUpdated, instead of the jar or pom file. I had always to suppress this file to permit a new download.
Also really worthy were :
as already said, using the mvn clean install from the command line, apparently much more patient than m2eclipse, and also efficient and verbose, at least for the time being.
(and also the Update Project of the Maven menu)
downloading using the dependency:get goal
mvn org.apache.maven.plugins:maven-dependency-plugin:2.1:get -DrepoUrl=url -Dartifact=groupId:artifactId:version1
(from within the project folder) (hint given in another thread, thanks also).
also downloading and installing manually (.jar+.sha1), from in particular, "m2proxy atlassian" .
adding other repositories in the pom.xml itself (the settings.xml mirror configuration did'nt do the job, I don't know yet why). Ex : nexus/content/repositories/releases/ et nexus/content/repositories/releases/, sous repository.jboss.org, ou download.java.net/maven/2 .
To finish, in any case, a lot of time (!..) could have been et could certainly still be spared with a light tool repairing thoroughly the local repository straightaway. I could not yet find it. Actually it should even be normally a mvn command ("--repair-local-repository").
Encountered the same problem.
For my case i was working behind a proxy.
My solution was
Modify the settings.xml file in the .m2 folder to add the proxy configuration.
proxy
true
http
172.23.182.63
4145
In eclipse Click update settings button. Menu: Windows>>Preferences>>Maven>>User Settings
Delete the .m2/repository folder
Refresh my maven project.
After step 4 - eclipse took a few minutes downloading files and project refreshed successfully.
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.
This error bothered me for two days. I tried all kinds of solutions, nothing worked. Finally I give up and tried a radical approach. and it worked! Here are the steps:
Save a copy of the pom.xml,
deleted all text in pom.xml
Let eclipse do a clean rebuild, of course everything will be broken.
pasted back everything in the original pom.xml
let Eclipse build again
I guess it was "indeterministic" as the following article said.
http://wiki.eclipse.org/M2E_plugin_execution_not_covered
in my case there was a dependency without a version. in eclipse m2e does not force you to enter a version so i left it blank. once i put the version in pom.xml from within eclipse all was fine
I had a similar case for the default groovy compiler plugin
The solution was to install ME2 provided by Springsource according to this answer
Plugin execution not covered by lifecycle configuration maven error
This immediately solved the "Plugin execution not covered by lifecycle configuration" problem in Eclispe Juno.
I had the same problem but with an other cause. The solution was to deactivate Avira Browser Protection (in german Browser-Schutz). I took the solusion from m2e cannot transfer metadata from nexus, but maven command line can. It can be activated again ones maven has the needed plugin.
I am using MacOSX with Eclipse 4.3 (Krepler). What I originally tried was to install Maven via the terminal using Brew. It installed correctly Maven 3.0.4. However when I tried to import any ready maven projects (File > Import > Maven) it would display the following two errors:
No marketplace entries found to handle Execution default-testResources
What I did is go to Help > Eclipse Marketplace and type "Maven" in the search bar and install the first default Maven client for Eclipse. Everything worked for me from this point.
Hope it helps to you too.
The following steps worked for me:
Close Eclipse.
Navigate to user home directory. (For example: "C:\Users\YourUserName.m2")
Delete the "repository" folder.
Re-open Eclipse.
Click on the Maven project that has an issue and go to "Project" --> "Clean".
Right-click on the project and go to "Maven" --> "Update Project...".
Close Eclipse.
Open Eclipse.
Click on the project folder in the "Project Explorer" window (usually on the left).
Hit the "F5" key a few times to Refresh your project.
Done!
These steps worked for me in Eclipse Luna. Please let me know if I can help further.
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.
In Eclipse I imported a maven-based project which uses maven jetty plugin. If I run mvn jetty:run from command line, everything works fine. If I add a run configuration in Eclipse and try to run it, I get the error message:
[ERROR] No plugin found for prefix 'jetty' in the current project and in the plugin groups [org.apache.maven.plugins, org.codehaus.mojo] available from the repositories [local (/home/eugene/.m2/repository), central (http://repo1.maven.org/maven2)] -> [Help 1]
In the Eclipe run configuration, I use:
Base directory: ${project_loc}
Goal: jetty:run
Maven Runtime: External
I read the [Help1] page. I don't have pluginGroup settings in maven configuration files, but I have the jetty plugin mentioned in pom.xml, so I guess everything should be fine (especially because everything works in command-line). I tried to "Run as > Maven clean" in Eclipse before executing the jetty run configuration, but it didn't help. Project compiles and passes all tests, only jetty:run does not work in Eclipse.
Please help, I'm an Eclipse & Maven newbie. Thanks in advance.
It does not work for me from command-line either.
Can you check if it works after adding the following in settings.xml as documented?
<pluginGroups>
<pluginGroup>org.mortbay.jetty</pluginGroup>
</pluginGroups>
Also note that there are two different versions of the plugin - the older maven jetty plugin and the newer jetty maven plugin.
I met this problem too, an easier way to solve this is to edit your pom.xml, add following plugin:
<project>
...
<build>
<plugins>
...
<plugin>
<groupId>org.mortbay.jetty</groupId>
<artifactId>jetty-maven-plugin</artifactId>
<version>7.6.8.v20121106</version>
</plugin>
...
</plugins>
</build>
...
</project>
Note:
jetty-maven-plugin is used for jetty version 7 and above, if you want jetty version 6, you should use maven-jetty-plugin
for the version, you may want to have a look at here and here for your desired version's full name.
I apologize for wasting your time. Now I looked through maven warnings which appeared in Eclipse console after I ran the run configuration. I noticed
[WARNING] Failed to retrieve plugin descriptor for Plugin [org.mortbay.jetty:maven-jetty-plugin]: null
so it became obvious why it couldn't recognize jetty: prefix. Couple of lines above I saw a bunch of warnings about missing plugin versions. So I added a version specification for the jetty plugin (<version> entry in pom.xml) and it solved the problem. I forgot a common rule that if something breaks the first thing to check is warnings you get.
I've got this issue in eclipse after importing an appengine project.
The target:
mvn appengine:devserver
The error:
[ERROR] No plugin found for prefix 'appengine' in the current project and in the plugin groups [org.apache.maven.plugins, org.codehaus.mojo] available from the repositories [local (/Users/averasko/.m2/repository), central (http://repo.maven.apache.org/maven2)] -> [Help 1]
The problem was in the incorrect base directory in the eclipse run configuration. When maven does not see a pom.xml file and is asked to run some non-standard target if fails like this as it don't know anything about the plugin that defines the target.
The solution is to correct the base directory to wherever your pom.xml file resides.
if you following this tutorial:
http://tapestry.apache.org/creating-the-skeleton-application.html
don't forget to follow this one crucial instruction:
Change into the newly created directory, and execute the command: