Could Not Calculate Build Plan: Plugin Org.apache.maven.plugins:maven-resources-plugin:2.5 Or One Of Its Dependencies Could Not Be Resolved

This error message typically occurs when Maven is unable to download a certain plugin or one of its dependencies. There could be multiple reasons for this problem, such as network connection issues or repository configuration problems.

Here are a few steps you can try to resolve this issue:

  1. Check your internet connection: Ensure that you have a stable internet connection and can access the required repositories.

  2. Delete the local repository: Maven stores its downloaded dependencies in a local repository located in the .m2 directory. Clearing the repository might help resolve any corrupt or stale files. You can delete the entire .m2 folder or just the specific folder related to the affected plugin.

  3. Force Maven to update the plugin: In your project directory, locate the pom.xml file and open it. Search for the plugin causing the issue (in this case, org.apache.maven.plugins:maven-resources-plugin:2.5) and update its version to the latest stable release. Save the changes and try building again.

  4. Try a different repository: By default, Maven uses the central Maven repository (repo.maven.apache.org/maven2) to download required dependencies. Sometimes this repository may be temporarily down or experiencing issues. You can try switching to an alternative repository by adding the relevant repository URL to your settings.xml file or directly in the pom.xml.

  5. Check proxy settings: If you are behind a firewall or proxy, make sure that Maven is properly configured to work through the proxy. Update your Maven settings.xml file with the appropriate proxy details.

  6. Force an update: Run Maven with the -U flag (mvn clean install -U) to force an update of dependencies, plugins, and snapshots.

  7. Manually download the missing plugin: If all else fails, try manually downloading the required plugin and its dependencies from a reliable source. You can then install them into your local repository using the mvn install:install-file command.

Remember to always maintain a backup of your project before making any changes to your build configuration.

About the Author Rex

I'm a passionate tech blogger with an insatiable love for programming! From my early days tinkering with code, I've delved into web dev, mobile apps, and AI. Sharing insights and tutorials with the world is my joy, connecting me to a global community of like-minded tech enthusiasts. Python holds a special place in my heart, but I embrace all challenges. Constantly learning, I attend tech conferences, contribute to open-source projects, and engage in code review sessions. My ultimate goal is to inspire the next generation of developers and contribute positively to the ever-evolving tech landscape. Let's code together!