我想每五秒钟在我的Web应用程序中发布一条消息,我正在使用Quatz安排此任务。这是我的密码
public class InvoiceGenerationSchedular implements ServletContextListener {
@Override
public void contextDestroyed(ServletContextEvent arg0) {
System.out.println("Listener is off");
}
@Override
public void contextInitialized(ServletContextEvent servletContextEvent) {
System.out.println("Listener initialized.");
JobDetail job = JobBuilder.newJob(HelloJob.class)
.withIdentity("dummyJobName", "group1").build();
Trigger trigger = TriggerBuilder
.newTrigger()
.withIdentity("dummyTriggerName", "group1")
.withSchedule(
CronScheduleBuilder.cronSchedule("0/5 * * * * ?")).build();
//schedule it
Scheduler scheduler;
try {
scheduler = new StdSchedulerFactory().getScheduler();
scheduler.start();
scheduler.scheduleJob(job, trigger);
} catch (SchedulerException e) {
e.printStackTrace();
}
}
class HelloJob implements Job
{
@Override
public void execute(JobExecutionContext arg0) throws JobExecutionException {
System.out.println("Hello Quartz!");
}
}}
而我的web.xml是
<servlet>
<servlet-name>InvoiceGenerationServlet</servlet-name>
<servlet-class>InvoiceGenerationSchedular</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>InvoiceGenerationServlet</servlet-name>
<url-pattern>/InvoiceGenerationServlet</url-pattern>
</servlet-mapping>
<listener>
<listener-class>InvoiceGenerationSchedular</listener-class>
</listener>
现在的问题是,每当我运行代码时,它只会给我输出
侦听器已初始化
没什么,尽管我希望它每5秒打印一次“ Hello Quartz”,但它什么也不打印。我不明白为什么,也不会给我任何例外。我是Quartz的新手,所以我不知道如何解决这个问题。我当然首先用谷歌搜索了我的问题,但没有得到太多答案。
尝试像这样在触发器生成器中添加forJob(job)-
TriggerBuilder
.newTrigger()
.withIdentity("dummyTriggerName", "group1")
.forJob(job)//<--- this line is the new addition
.withSchedule(
CronScheduleBuilder.cronSchedule("0/5 * * * * ?")).build();
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