quartz定时任务-job
1,首先添加对quartz组建的引用 quartz-2.2.3.jar,slf4j-api-1.7.7.jar
https://files.cnblogs.com/files/renjing/quartz.zip
2,新增类实现job接口
import org.apache.logging.log4j.LogManager; import org.apache.logging.log4j.Logger; import org.quartz.Job; import org.quartz.JobExecutionContext; import org.quartz.JobExecutionException; public class TestJob implements Job { private static final Logger logger = LogManager.getLogger(TestJob.class); @Override public void execute(JobExecutionContext arg0) throws JobExecutionException { logger.debug("TestJob执行啦!"); } }
3.新增一个Servlet,并且设置为在网站启动的时候自动初始化
import java.util.TimeZone; import javax.servlet.ServletException; import javax.servlet.annotation.WebServlet; import javax.servlet.http.HttpServlet; import org.apache.logging.log4j.LogManager; import org.apache.logging.log4j.Logger; import org.quartz.CronScheduleBuilder; import org.quartz.CronTrigger; import org.quartz.JobBuilder; import org.quartz.JobDetail; import org.quartz.Scheduler; import org.quartz.TriggerBuilder; import org.quartz.impl.StdSchedulerFactory; //loadOnStartup表示:网站启动的时候自动初始化QuartzInitServlet(即init被调用) @WebServlet(value = "/QuartzInitServlet", loadOnStartup = 1) public class QuartzInitServlet extends HttpServlet { private static final Logger logger = LogManager.getLogger(QuartzInitServlet.class); @Override public void init() throws ServletException { super.init(); try { Scheduler scheduler = StdSchedulerFactory.getDefaultScheduler(); JobDetail job = JobBuilder.newJob(TestJob.class).build(); CronScheduleBuilder cronScheduleBuilder = CronScheduleBuilder.cronSchedule("0 0 0/1 * * ? ").inTimeZone(TimeZone.getTimeZone("GMT+08:00"));//每小时执行一次 //CronScheduleBuilder.cronSchedule("10/5 * * * * ? ").inTimeZone(TimeZone.getTimeZone("GMT+08:00"));//从10秒开始,每隔5秒执行一次 //CronScheduleBuilder.cronSchedule("45 53 23 * * ? ").inTimeZone(TimeZone.getTimeZone("GMT+08:00"));//每天23:53:45 //CronScheduleBuilder.dailyAtHourAndMinute(23, 48).inTimeZone(TimeZone.getTimeZone("GMT+08:00")); CronTrigger trigger = TriggerBuilder.newTrigger().withSchedule(cronScheduleBuilder).build(); scheduler.scheduleJob(job, trigger); scheduler.start();//不要忘了启动 } catch(Throwable ex) { logger.error("定时任务安排出错",ex); } } }