使用maven-war-plugin弄清楚了。请参阅以下配置：

<plugin>
     <groupId>org.apache.maven.plugins</groupId>
     <artifactId>maven-war-plugin</artifactId>
     <version>2.1.1</version>
     <configuration>
         <archive>
             <manifestEntries>
                 <version>${project.version}</version>
             </manifestEntries>
         </archive>
     </configuration>
</plugin>