This document discusses the Maven build tool, including its origins, concepts, usage, and integration with IDEs. It covers Maven's core concepts like the build lifecycle, POM files, standard project layout, plugins, testing, and resources. It also provides examples of creating and building Maven projects from the command line and configuring projects with multiple modules.

1. Maven “ Tutto” quello che NON avreste MAI voluto sapere... ( http://maven.apache.org/ ) JUG-Genova Fabio Bonfante Carlo Bonamico

2. L'origine... Maven 1.x Condizioni dello sviluppatore dopo un uso intensivo di Maven 1 su progetti di grandi dimensioni (Fortunatamente con Maven 2 è tutta un'altra cosa...)

3. L'evoluzione... Maven 2 Condizioni dello sviluppatore dopo un uso intensivo di maven 2 (La situazione è nettamente migliorata!)

4. Cos'è Maven Maven is essentially a project management and comprehension tool and as such provides a way to help with managing: Builds Documentation Reporting Dependencies SCMs Releases, Distribution

5. Installazione e configurazione Unzip M2_HOME – path/to/installed-maven MAVEN_OPTS – opzioni JVM <user>/.m2/settings.xml <user>/.m2/repository – posizione di default del repository locale

6. Concetti base: Ciclo di Build Build Lifecycle Phases (principali) validate - validate the project is correct and all necessary information is available compile - compile the source code of the project test - test the compiled source code using a suitable unit testing framework. These tests should not require the code be packaged or deployed package - take the compiled code and package it in its distributable format, such as a JAR.

7. Concetti base: Ciclo di Build integration-test - process and deploy the package if necessary into an environment where integration tests can be run verify - run any checks to verify the package is valid and meets quality criteria install - install the package into the local repository, for use as a dependency in other projects locally deploy - done in an integration or release environment, copies the final package to the remote repository for sharing with other developers and projects.

8. Concetti base: POM Fasi “extra” del ciclo di build clean : cleans up artifacts created by prior builds site : generates site documentation for this project Project Object Model (POM, pom.xml) Definisce il progetto, le sue dipendenze e come deve essere compilato.

9. Concetti Base: Standard Directory Layout src/main/java Application/Library sources src/main/resources Application/Library resources src/main/filters Resource filter files src/main/assembly Assembly descriptors src/main/config Configuration 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/site Site

10. Build with Maven... (shell) Creare un progetto mvn archetype:create -DgroupId=ge.jug.samples -DartifactId=zeroapp Compilarlo: mvn package Eseguirlo java -cp target/zeroapp-1.0-SNAPSHOT.jar ge.jug.samples.App

11. Build with Maven Uno sguardo al POM... Ogni cosa è una plug-in... <build> <plugins> < plugin > <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-compiler-plugin</artifactId> <version>2.0.2</version> < configuration > <source>1.5</source> <target>1.5</target> </ configuration > </ plugin > </plugins> </build>

12. Build with Maven Build di più progetti +- pom.xml +- my-app | +- pom.xml | +- src | +- main | +- java +- my-webapp | +- pom.xml | +- src | +- main | +- webapp

13. Build with Maven Struttura del POM radice <project ....> <modelVersion>4.0.0</modelVersion> <groupId>com.mycompany.app</groupId> <version>1.0-SNAPSHOT</version> <artifactId>app</artifactId> <packaging> pom </packaging> <modules> <module>my-app</module> <module>my-webapp</module> </modules> </project>

14. Build with Maven... testing By default the tests included are: **/*Test.java **/Test*.java **/*TestCase.java And the default excludes are: **/Abstract*Test.java **/Abstract*TestCase.java

15. Build with Maven <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-surefire-plugin</artifactId> <version>2.4-SNAPSHOT</version> <configuration> <includes> <include>**/*QueryService.java </include> </includes> <excludes> <exclude>**/FillDBTest.java</exclude> </excludes> </configuration>

16. Build with Maven Aggiunta di file di risorse <build> <resources> <resource> <directory>src/main/resources</directory> <filtering>true</filtering> </resource> </resources> </build>

17. Integrazione con Eclipse Generazione file di progetto per Eclipse mvn eclipse:eclipse Plugin disponibili Maven Integration for Eclipse http://m2eclipse.sonatype.org/update/ Q for Eclipse http://q4e.googlecode.com/svn/trunk/updatesite/

18. Integrazione con Netbeans Tools > Plugins

19. Riferimenti Maven home page http://maven.apache.org/ Maven: The Definitive Guide http://www.sonatype.com/book/ Better build with Maven http://www.mergere.com/m2book_download.jsp