相关链接：https://www.cnblogs.com/drift-ice/p/3817269.html
https://www.ibm.com/developerworks/cn/opensource/os-cn-quartz/
http://www.icartype.com/?p=140
https://www.roncoo.com/course/view/e2b459016e2e477dbd5d67c8b23fe86d
原文：https://www.cnblogs.com/suinlove/p/9184221.html