转载

【Quartz指南】在Web应用中用Quartz

初始化调度器

我们可以在Web应用中的配置文件web.xml里设置一个Quartz的Servlet-QuartzInitializerServlet：

<web-app> <servlet> <servlet-name>QuartzInitializer</servlet-name> <display-name>Quartz Initializer Servlet</display-name><servlet-class> org.quartz.ee.servlet.QuartzInitializerServlet </servlet-class> <load-on-startup>1</load-on-startup> <init-param> <param-name>config-file</param-name> <param-value>/some/path/my_quartz.properties</param-value> </init-param> <init-param> <param-name>shutdown-on-unload</param-name> <param-value>true</param-value> </init-param> <init-param> <param-name>start-scheduler-on-load</param-name> <param-value>true</param-value> </init-param> </servlet>  </web-app>

说明：config-file参数值是StdSchedulerFactory用来实例化调度器的，可以把自己写的Quartz属性文件放在classPath即WEB-INF/classes路径下。

访问调度器

从Quartz1.5开始，QuartzInitializerServlet将自动储存StdSchedulerFactory实例在ServletContext里： // 从Session中获得ServletContext

ServletContext ctx = request.getSession().getServletContext(); // 从ServletContext中获得StdSchedulerFactory StdSchedulerFactory factory = (StdSchedulerFactory)ctx.getAttribute( QuartzFactoryServlet.QUARTZ_FACTORY_KEY); // 从StdSchedulerFactory中获得Scheduler Scheduler scheduler = factory.getScheduler(); // 启动Scheduler scheduler.start();

正文到此结束