maven spotbugs doesn't generate report

Question

I configured maven spotbugs plugin based on docs on its website, but it doesn't generate report.

This was a line I saw when running

mvn site -X

> [INFO] 15 reports detected for
> maven-project-info-reports-plugin:3.1.0: ci-management, dependencies,
> dependency-info, dependency-management, distribution-management,
> index, issue-management, licenses, mailing-lists, modules,
> plugin-management, plugins, scm, summary, team [DEBUG] ******
> SpotBugsMojo canGenerateReport  
> ******* [DEBUG] canGenerate is false

Please watch the last line!

Answer 1

I found out through checking source code that it needs to have classes folder generated in target before being able to run any check.

So right way to run it is

mvn compile site

Which generates classes in target folder and writes this log to console:

> [INFO] 15 reports detected for
> maven-project-info-reports-plugin:3.1.0: ci-management, dependencies,
> dependency-info, dependency-management, distribution-management,
> index, issue-management, licenses, mailing-lists, modules,
> plugin-management, plugins, scm, summary, team [DEBUG] ******
> SpotBugsMojo canGenerateReport ******* [DEBUG] canGenerate Src is true
> [DEBUG] ****** SpotBugsMojo executeSpotbugs ******* [DEBUG] ******
> Executing SpotBugsMojo *******