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);
}
}
}
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