I've created a Maven project. This is the structure
No plugin found for prefix 'tomcat7' in the current project and in the plugin groups [org.apache.maven.plugins, org.codehaus.mojo]
Plugins goals can be called using their 'FQN': groupId:artifactId:version:goal or, if applicable, shorter commands (many variants available). Using only the short name of a plugin (in your tomcat7:deploy, tomcat7 is the short name, deploy being the goal/mojo) is applicable if:
1) the groupId of the plugin is contained in the known plugin groups of Maven. org.apache.maven.plugins being in the list by default.
the pom.xml of the project you're invoking the Maven command on declares the plugin
2) the artifactId is [short-name]-maven-plugin or maven-[short-name]-plugin (maven-[short-name]-plugin being 'reserved' for plugins provided by Maven project.
That explains why mvn compiler:compile can work out of the box on any project, but not tomcat7:deploy
In your case, the second condition is true, so you just have to declare the plugin on the project you're launching the command on, or add this to your user settings.xml file:
<pluginGroups> <pluginGroup>org.apache.tomcat.maven</pluginGroup> </pluginGroups>