job1
　　JDKTimer实现了jdk方式的定时任务
　　QuartzJob和job类一起实现了第三方
　　　　　　quartz帮助我们实现的定时任务

job2
　　Job类与applicationContext.xml联合实现spring方式的定时任务(ioc)
job3
　　Job类与applicationContext-anno.xml联合实现的spring + 注解方式的定时任务
job4
　　Job类+controller+Springmvc.xml联合实现的springmvc+注解方式的定时任务
　　(此处使用的是job1中的job类,偷懒了)(Job1
JDKTimer implements the timing task of the JDK mode
The QuartzJob and job class together implement third parties
Quartz helps us to implement the timed task
Job2
The Job class and the applicationContext.xml jointly implement the timing task of the spring mode (IOC)
Job3
The timing task of the Spring + annotations implemented by the Job class and the applicationContext-anno.xml
Job4
The timing task of the springmvc+ annotations implemented by the Job class +controller+Springmvc.xml
(the job class in job1 is used here, laziness))