增加common.js工具类，将该工具函数引入框架。

侯瑞军

2020-04-07 4c7744aaaa106ca4d00b535d9e66e2bc0da8903b

1
E:\product\kidgrow\kidgrow-microservices-platform\kidgrow-microservices-platform\kidgrow-business\kidgrow-filecenter\kidgrow-filecenter-api\src\main\java\com\kidgrow\filecenter\model\FileInfo.java