In your project's root directory, run the following command:
mvn archetype:create-from-project
The generated archetype is in directory target/generated-sources/archetype
Move above folder to different folder, say: /path/to/myarchetype. Open pom to change <name> tag, and groupId and artifactId. To add additional required field, open archetype-metadata.xml file (src/main/resources/META-INF/maven) and add one required property, using <requiredProperties> tag.
To install archetype into local catalog:
mvn clean install
To generate a new project from the installed archetype:
mvn archetype:generate -DarchetypeCatalog=local
