The Findbugs-Plugin should be in the reportPlugins-Part of the maven-site-plugin.

<build> <plugins> <plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-site-plugin</artifactId> <configuration> <reportPlugins> <plugin> <groupId>org.codehaus.mojo</groupId> <artifactId>findbugs-maven-plugin</artifactId> </plugin> </reportPlugins> </configuration> </plugin> </plugins> </build> 

And additionally, findbugs-report is only generated when the source is compiled before running mvn site. When generate the site, i use mvn test site so findbugs generate the report.

The Findbugs-Plugin should be in the reportPlugins-Part of the maven-site-plugin.

<build> <plugins> <plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-site-plugin</artifactId> <configuration> <reportPlugins> <plugin> <groupId>org.codehaus.mojo</groupId> <artifactId>findbugs-maven-plugin</artifactId> </plugin> </reportPlugins> </configuration> </plugin> </plugins> </build> 

And additionally, findbugs-report is only generated when the source is compiled before running mvn site. When generate the site, i use mvn test site so findbugs generate the report.