1、问题
org.apache.catalina.webresources.Cache.getResource Unable to add the resource at [xxx] to the cache for web application [/xxx]
because there was insufficient free space available after evicting expired cache entries - consider increasing the maximum size of the cache
2、解决方式：
在tomcat 下的conf 文件夹中content.xml 修改里面的内容：大小默认是10240，单位是KB
<Resources cachingAllowed="true" cacheMaxSize="512000" />
