Maven

Maven is a Java project management tool.

• Maven is similar to Ant but simpler.

• A Maven project is any directory with a project.xml file in it

• project.xml defines the project object model (POM)

• maven.xml defines goals

The repository holds common libraries. These libraries must be installed into the repository. Under windows, the repository is normally found in: c:\Documents and Settings<User>.maven\repository

Maven uses plugins to execute goals. Within a project’s directory, a plugin is called as follows:

mavin : e.g. maven java:compile

The plugins are written in Jelly

If a plugin has a default goal, it can be executed by:

maven

Constants

• Constants can be defined in %HOME%/build.properties
• They are referenced by ${constant.name}

Installing Maven

• Download maven and follow installation instructions
• Set the environment variable MAVEN_HOME to
• Create a local repository by running %MAVENHOME%\bin\installrepo.bat %HOME%.maven\repository

Installing jars

Downloading libraries

You can define where the remote repository is held by changing the maven.repo.remote value in project.properties maven.repo.remote = http://www.ibiblio.org/maven

http://www.ibiblio.org/ is an open source maven repository,

Files

• maven.xml - contains project specific goals, preGoals and postGoals

maven.xml

Eclipse Setup

Tell Eclipse where the Maven repository is by setting the MAVEN_REPO variable in Window->Preferences->Build Path->Classpath Variables. On Belfast the repository is in c:\java\maven-v.vv\repository

You can change into any maven-enabled project directories and type: maven eclipse and a .project and .classpath will be create automatically.

Import into Eclipse and rebuild

http://radio.weblogs.com/0112098/stories/2003/02/12/usingEclipseAndMaven.html

http://www.jadetower.org/muses/archives/000256.html

http://maven.apache.org/start/integrate.html

Andrew McDonough is a consultant CTO and software developer, currently based between Berlin and London.

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