ref:
http://www.cnblogs.com/obullxl/archive/2011/07/10/spring-quartz-cron-integration.html
http://www.oschina.net/question/8676_9032
http://gong1208.iteye.com/blog/1773177
spring 定时任务相关链接
原文：http://www.cnblogs.com/shouwangzhe-/p/4592165.html
