[java] How to solve maven 2.6 resource plugin dependency?

ERROR:

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

Solutions Tried:

Updated project: not able to download from REPO of maven.

Tried putting perticular jar in that folder of .m2 repo.

Can provide references if you want.

If a download fails for some reason Maven will not try to download it within a certain time frame (it leaves a file with a timestamp).

To fix this you can either

• Clear (parts of) your .m2 repo
• Run maven with -U to force an update

Step 1 : Check the proxy configured in eclipse is correct or not ? (Window->Preferences->General->Network Connections).

Step 2 : Right Click on Project-> Go to Maven -> Update the project

Step 3: Run as Maven Install.

==== By Following these steps, i am able to solve this error.

I had exactly the same error. My network is an internal one of a company. The proxy has been disabled from the IT team so for that we do not have to enable any proxy settings. I have commented the proxy setting in settings.xml file from the below mentioned locations C:\Users\vijay.singh.m2\settings.xml This fixed the same issue for me

Tried everything. I deleted m2e and installed m2e version 2.7.0. Then deleted the .m2 directory and force updated maven. It worked!

Right Click on Project go to -> Maven -> Update project ->select Force update project check box and click on Finish.

On windows:

1. Remove folder from C:\Users\USER.m2
2. Close and open the project or force a change on file: pom.xml for saving :)

I had exactly the same error. My network is an internal one of a company. I downloaded neon-eclipse for java developpers. These steps worked for me:

1- I downloaded a VPN client on my PC to be totally blinded from the network. Shellfire I used. Use free account and connect to Shellserver.

2- Inside the windows firewall, I added incoming rule for Eclipse. Navigate to where eclipse exe is found.

3- Perform Maven Update project.

Then the project was able to fetch from the maven repository.

hope it helps.

This fixed the same issue for me: My eclipse is installed in /usr/local/bin/eclipse

1) Changed permission for eclipse from root to owner: sudo chown -R $USER eclipse

2) Right click on project/Maven right click on Update Maven select Force update maven project

I have faced the same issue. Try declaring missing plugin in the conf/settings.xml.

<build>
    <pluginManagement>
      <plugins>
        <plugin>
          <artifactId>maven-resources-plugin</artifactId>
          <version>2.6</version>
        </plugin>           
      </plugins>
    </pluginManagement>   
</build>

This issue is happening due to change of protocol from http to https for central repository. please refer following link for more details. https://support.sonatype.com/hc/en-us/articles/360041287334-Central-501-HTTPS-Required 

In order to fix the problem, copy following into your pom.ml file. This will set the repository url to use https.

<repositories>
        <repository>
            <snapshots>
                <enabled>false</enabled>
            </snapshots>
            <id>central</id>
            <name>Central Repository</name>
            <url>https://repo.maven.apache.org/maven2</url>
        </repository>
    </repositories>
    <pluginRepositories>
        <pluginRepository>
            <releases>
                <updatePolicy>never</updatePolicy>
            </releases>
            <snapshots>
                <enabled>false</enabled>
            </snapshots>
            <id>central</id>
            <name>Central Repository</name>
            <url>https://repo.maven.apache.org/maven2</url>
        </pluginRepository>
    </pluginRepositories>