The richfaces-resources:process goal requires three required parameters:
mvn clean richfaces-resources:process -Dskins=blueSky -DstaticResourceMappingFile=target/configuration.txt -DresourcesOutputDir=target/processed-resources/
In most cases, you would need to configure build to generate files automatically.
Following configuration will take all @ResourceDependencies defined across project and its dependencies and pre-generate them to the given directory and generate configuration for RichFaces resource mapping.
<plugin> <groupId>org.richfaces.cdk</groupId> <artifactId>maven-richfaces-resources-plugin</artifactId> <version>4.1.0-SNAPSHOT</version> <configuration> <skins> <skin>blueSky</skin> </skins> <excludedFiles> <exclude>^\Qorg.richfaces.renderkit.html.images.\E.*</exclude> <exclude>^\Qorg.richfaces.renderkit.html.iconimages.\E.*</exclude> </excludedFiles> <includedContentTypes> <include>application/javascript</include> <include>text/css</include> <include>image/.+</include> </includedContentTypes> <fileNameMappings> <property> <name>^.*showcase.*/([^/]+\.css)$</name> <value>org.richfaces.showcase.css/$1</value> </property> <property> <name>^.+/([^/]+\.(png|gif|jpg))$</name> <value>org.richfaces.images/$1</value> </property> <property> <name>^.+/([^/]+\.css)$</name> <value>org.richfaces.css/$1</value> </property> </fileNameMappings> </configuration> <executions> <execution> <id>process-resources</id> <goals> <goal>process</goal> </goals> <configuration> <resourcesOutputDir>${project.build.outputDirectory}/META-INF/resources/com.acme.staticResources/</resourcesOutputDir> <staticResourceMappingFile>${project.build.outputDirectory}/META-INF/custom-mapping.properties</staticResourceMappingFile> <pack>true</pack> <compress>true</pack> </configuration> </execution> </executions> </plugin>