No plugin found for prefix 'jetty' in the current project and in the plugin groups (local, central)

You are using the Plugin version 9.4.0-SNAPSHOT. This version is not available in the central repo (available versions).

To add a dependency doesn't solve the problem because a dependency is not the same as a plugin. A dependency is used or required by the code you want to compile and a plugin is something that would compile, build or analyze your code.

In short:

• you don't need a dependency on jetty-maven-plugin

• you have to change the version of the plugin to a version which is available in the central or your local repo.
  For example:

  <plugin>
      <groupId>org.eclipse.jetty</groupId>
      <artifactId>jetty-maven-plugin</artifactId>
      <version>9.4.0.M0</version>
  </plugin>
  

Please edit the settings.xml file in the local repository with the following information

<settings xmlns="http://maven.apache.org/SETTINGS/1.0.0"
  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  xsi:schemaLocation="http://maven.apache.org/SETTINGS/1.0.0
                      http://maven.apache.org/xsd/settings-1.0.0.xsd">
  <localRepository>${user.home}/.m2/repository</localRepository>
  <interactiveMode>true</interactiveMode>
  <usePluginRegistry>false</usePluginRegistry>
  <offline>false</offline>
  <pluginGroups>
    <pluginGroup>org.mortbay.jetty</pluginGroup>
  </pluginGroups>
</settings>

It's working for me.