无法计算构建计划：插件 org.apache.maven.plugins:maven-resources-plugin:2.6 或其依赖项之一无法解析

Question

When I am try to build the project it gives this error.

Errors occurred during the build.
Errors running builder 'Maven Project Builder' on project 'ProjectName'.
Could not calculate build plan: Plugin org.apache.maven.plugins:maven-resources-plugin:2.6 or one of its dependencies could not be resolved: Failed to read artifact descriptor for org.apache.maven.plugins:maven-resources-plugin:jar:2.6
Plugin org.apache.maven.plugins:maven-resources-plugin:2.6 or one of its dependencies could not be resolved: Failed to read artifact descriptor for org.apache.maven.plugins:maven-resources-plugin:jar:2.6
Could not calculate build plan: Plugin org.apache.maven.plugins:maven-resources-plugin:2.6 or one of its dependencies could not be resolved: Failed to read artifact descriptor for org.apache.maven.plugins:maven-resources-plugin:jar:2.6
Plugin org.apache.maven.plugins:maven-resources-plugin:2.6 or one of its dependencies could not be resolved: Failed to read artifact descriptor for org.apache.maven.plugins:maven-resources-plugin:jar:2.6

My Java version is 1.8 and Maven version is 3.2.5

And also when I first time configure Maven in my computer and I check that Maven configured correctly with mvn --version command and it works fine. But after restart my computer and checked Maven is work correctly. Then it says:

C:\Users\User Name>mvn --version
'mvn' is not recognized as an internal or external command,
operable program or batch file.

Answer 1

Try the following steps:

1. Make sure you have connectivity (you can browse) (This kind of error is usually due to connectivity with Internet)

2. Download Maven and unzip it

3. Create a JAVA_HOME System Variable

4. Create an M2_HOME System Variable

5. Add %JAVA_HOME%\\bin;%M2_HOME%\\bin; to your PATH variable

6. Open a command window cmd . Check: mvn -v

7. If you have a proxy, you will need to configure it

http://maven.apache.org/guides/mini/guide-proxies.html

8. Make sure you have .m2/repository (erase all the folders and files below)

9. If you are going to use Eclipse, You will need to create the settings.xml

Maven plugin in Eclipse - Settings.xml file is missing

You can see more detail in

http://maven.apache.org/ref/3.2.5/maven-settings/settings.html

Answer 2

删除 .m2 存储库文件夹下的所有文件并重建项目。

Answer 3

Try the following :

1. Make sure you add M2_HOME variable to your environment variables. It looks like you might have set M2_HOME temporarily in a cmd window and not as a permanent environment variable. Also append M2_HOME to the PATH variable.

2. Go to the m2 folder in your user directory.

   Example: On Windows, for user bot , the .m2 directory will be under C:\\Users\\bot . Look for the settings.xml file in this directory and look for the repository url within this file. See if you are able to hit this url from your browser. If not, you probably need to point to a different maven repository or use a proxy.

3. If you are able to hit the repository url from the browser, then check if the repository contains the maven-resource-plugin version 2.6. This can be found by navigating to org.apache.maven.plugins folder in the browser. It's possible that your pom has hard-coded the dependency of the plugin to 2.6 but it is not available in the repository. This can be fixed by changing the depndency version to the one available in the repository.

Answer 4

Try update your Eclipse with the newest Maven repository as follows:

1. Open "Install" dialog box by choosing "Help/Install New Software..." in Eclipse
2. Insert following link into "Work with:" input box http://download.eclipse.org/technology/m2e/releases/
   and press Enter
3. Select (check) "Maven Integration for Eclipse" and choose "Next >" button
4. Continue with the installation, confirm the License agreement, let the installation download what is necessary
5. After successful installation you should restart Eclipse
6. Your project should be loaded without Maven-related errors now

Answer 5

This helped me: I created a new maven project which was working fine in my old workspace, but gave above errors in the new workspace. I had to do the following: - Open old workspace on Eclipse - open Preferences tab - Search Maven in filter - Copy the path for settings.xml from User Settings - User Settings - Switch to new workspace - Update the preferences - Maven - User Settings - User Settings path

After the build is completed, all errors are resolved.

Answer 6

I had a similar problem in spring tool suite(sts) . THE .m2 repository was not completely downloaded in the local system which is the reason why I was getting this error. So I reinstalled sts and deleted the old .m2 repository from the system and created a new maven project in sts which downloaded the complete .m2 repository. It worked for me.

Answer 7

Step1: Delete all instances of java from you machine

Step2: Delete all the environment variables related to java/jdk/jre

Step3: Check in programm files and program files(X86) folder, there should not be java folder.

Step4: Install java again.

Step5: Go to cmd and type "java -version" Result: it will display the java version which is installed in your machine.

Step6: now delete all the files which are in C:/User/AdminOrUserNameofYourMachine/.m2 folder

Step6: go to cmd and run "mvn -v" Result: It will display the Apache maven version installed on your machine

Step7: Now Rebuild your project.

This worked for me.