<plugin>
  <groupId>org.apache.maven.plugins</groupId>
  <artifactId>maven-war-plugin</artifactId>
  <version>2.4</version>
  <configuration>
     <warName>ws</warName>
     <attachClasses>true</attachClasses>
  <classesClassifier>classes</classesClassifier>
  <archive>
    <manifest>
      <addClasspath>true</addClasspath>
    </manifest>
  </archive>
  </configuration>
</plugin>