Spring 无缝整合 quartz

关键步骤：

1. 配置 SchedulerFactoryBean

<bean class="org.springframework.scheduling.quartz.SchedulerFactoryBean"></bean>

2. 获取 SchedulerFactoryBean

ApplicationContext ctx = WebApplicationContextUtils.getWebApplicationContext(servletContext);

SchedulerFactoryBean bean = (SchedulerFactoryBean)ctx.getBean(t) ;