3.5.6. Site Generation and Reporting

Another important feature of Maven is its ability to generate documentation and reports. In your simple project’s directory, execute the following command:

$ mvn site

This will execute the site lifecycle phase. Unlike the default build lifecycle that manages generation of code, manipulation of resources, compilation, packaging, etc., this lifecycle is concerned solely with processing site content under the src/site directories and generating reports. After this command executes, you should see a project web site in the target/site directory. Load target/site/index.html and you should see a basic shell of a project site. This shell contains some reports under “Project Reports” in the lefthand navigation menu, and it also contains information about the project, the dependencies, and developers associated with it under “Project Information.” The simple project’s web site is mostly empty, since the POM contains very little information about itself beyond a coordinate, a name, a URL, and a single test dependency.

On this site, you’ll notice that some default reports are available. A unit test report communicates the success and failure of all unit tests in the project. Another report generates Javadoc for the project’s API. Maven provides a full range of configurable reports, such as the Clover report that examines unit test coverage, the JXR report that generates cross-referenced HTML source code listings useful for code reviews, the PMD report that analyzes source code for various coding problems, and the JDepend report that analyzes the dependencies between packages in a codebase. You can customize site reports by configuring which reports are included in a build via the pom.xml file.