maven-war-plugin:排除所有目录,但只有一个

我有一个目录结构:

src
|__ main
    |__ java
    |__ resources
    |__ webapp
        |__ css_blue
        |__ css_green
        |__ css_red
        |__ WEB-INF

那里有CSS三个单独的目录(如css_red,css_green,css_blue).在这里,我想根据-D交换机只包含其中一个:

mvn clean install -Dcss=green

pom.xml

  4.0.0
  com.faisal.dwr
  chatbox
  0.0.1-SNAPSHOT
  war
  
    
      javax
      javaee-api
      6.0
      provided
    
    
    
      org.springframework
      spring-webmvc
      4.2.4.RELEASE
    
    
    
      org.springframework.security
      spring-security-web
      4.0.3.RELEASE
    
    
    
      org.springframework.security
      spring-security-config
      4.0.3.RELEASE
    
    
    
      org.directwebremoting
      dwr
      3.0.0-RELEASE
    
  

    
      ${project.artifactId}
      
       
        org.apache.maven.plugins
        maven-war-plugin
        2.6
        
            css_${css}