mvn archetype:generate -DgroupId=com.mycompany.app -DartifactId=my-app -DarchetypeArtifactId=maven-archetype-quickstart -DarchetypeVersion=1.4 -DinteractiveMode=false
What does it do?
- Execute the Maven goal archetype:generate, and passed in various parameters to that goal.
- archetype is the plugin that provides the goal. (goal is something like an ant task).
- archetype:generate goal creates a simple project based on maven-archetype-quickstart archetype.
What is a plugin
- Collection of goals with a general common purpose
- For example jboss-maven-plugin deals with various jboss items
- This is a phase rather than a goal.
- Phase is a step in build cycle which is ordered sequence of phases.
- When a phase is given, Maven will execute every phase in the sequence up to and including the one defined.
- For example, if we execute the compile phase, the phases that actually get executed are:
Test your compiled and packaged jar
- java -cp target/my-app-1.0-SNAPSHOT.jar com.mycompany.app.App
Java 9 or later
- By default your version of Maven might use an old version of the maven-compiler-plugin that is not compatible with Java 9 or later versions.
- To target Java 9 or later, you should at least use version 3.6.0 of the maven-compiler-plugin and set the maven.compiler.release property to the Java release you are targetting
(e.g. 9, 10, 11, 12, etc.)
- validate – check if all the information is available
- compile – compile the source code of the product
- test – test complied code using suitable unit testing product
- package – packagae the compiled code and package it in distributable format – jar
- integration-test – process and deploy the package into an environment where integration tests can be run
- verify – run checks to verify if the package is valid and meets quality criteria
- install – install the package in local repository for use in dependency in other projects locally
- deploy – done in an integration environment, copies the final package to remote repository for sharing with other developers and projects
Two special Maven phases
- clean – cleans up artifacts created by prior builds
- site – generates site documentation for this project
Phase Goal Relationship
- Phases are mapped to goals
- Specific goals executed per phase are dependent on packaging type of product.
- Project type jar – package executes jar.jar
- Project type war – package executes war.war
Phase & Goal execution order
- Phases and goals can be executed in sequence
- mvn clean dependency:copy-dependencies package
Maven Default Folders
- src/main/java Application/Library sources
- src/main/resources Application/Library resources
- src/main/filters Resource filter files
- src/main/webapp Web application sources
- src/test/java Test sources
- src/test/resources Test resources
- src/test/filters Test resource filter files
- src/it Integration Tests (primarily for plugins)
- src/assembly Assembly descriptors
- src/site Site
- LICENSE.txt Project’s license
- NOTICE.txt Notices and attributions required by libraries that the project depends on
- README.txt Project’s readme
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