Maven: A Developer's Notebook

Sharing Artifacts Through the Local Maven Repository

Figure 3-1 illustrates the dependencies between the subproject, and from this diagram, you can see that the web subproject depends upon the core subproject. How do you share artifacts between projects in Maven?

How do I do that?

You do this through the local Maven repository, which was introduced in Section 1.1. The core build will publish its JAR to the repository and the web build will define a dependency on the core JAR.

To refresh your memory, your local repository resides in ~/.maven/repository on Unix, or %USERPROFILE%\.maven\repository on Windows. Publishing a JAR to your local repository is as simple as executing the jar:install goal:

C:\dev\mavenbook\code\qotd\core>maven jar:install _ _ _ _ | \/ |_ _ _Apache_ _ _ _ _ | |\/| / _` \ V / -_) ' \ ~ intelligent projects ~ |_| |_\_ _,_|\_/\_ _ _|_||_| v. 1.0.2 build:start: java:prepare-filesystem: [mkdir] Created dir: C:\dev\mavenbook\code\qotd\core\target\classes java:compile: [echo] Compiling to C:\dev\mavenbook\code\qotd\core/target/classes [javac] Compiling 1 source file to C:\dev\mavenbook\code\qotd\core\target\classes java:jar-resources: test:prepare-filesystem: [mkdir] Created dir: C:\dev\mavenbook\code\qotd\core\target\test-classes [mkdir] Created dir: C:\dev\mavenbook\code\qotd\core\target\test-reports test:test-resources: test:compile: [javac] Compiling 1 source file to C:\dev\mavenbook\code\qotd\core\target\test-classes test:test: [junit] Testsuite: mdn.qotd.core.QuoteGeneratorTest ...