web.xml中报错异常

错误异常：

cvc-complex-type.2.4.a: Invalid content was found starting with element 'async-supported'. One of 

 '{"http://java.sun.com/xml/ns/javaee":init-param}' is expected.

<async-supported>true 

解决方案：

xmlns中再加两行

http://www.springmodules.org/schema/cache/springmodules-cache.xsd  
http://www.springmodules.org/schema/cache/springmodules-ehcache.xsd

如：