<!-- Ehcache start -->
<dependency>
<groupId>net.sf.ehcache</groupId>
<artifactId>ehcache-web</artifactId>
<version>2.0.4</version>
<optional>true</optional>
</dependency>
<!-- Ehcache end -->
Ehcache Maven依赖
原文：http://my.oschina.net/u/1045177/blog/508548
