Question

我正在从另一个调度程序调用调度程序（应该根据某些条件运行）（每1小时运行一次）。当满足'if（diffMinutes＆gt; = freq）'条件时，将调用QSchedule3类的execute（JobExecutionContext context）方法。如何将从QSchedule2类获取的数据库的内容传递给该执行方法？可以吗？我可以提一些建议吗？

QSchedule1班级

public class QSchedule1 {
    public static void main(String[] args) throws SchedulerException {

        Scheduler scheduler = StdSchedulerFactory.getDefaultScheduler();

        JobDetail job = newJob(Q2.class).withIdentity("cronJob", "q2Job").build();

        CronTrigger cronTrigger = newTrigger().withIdentity("trigger1", "q2Job")
                .withSchedule(CronScheduleBuilder.cronSchedule("0 0/1 * 1/1 * ? *")).build();

        scheduler.scheduleJob(job, cronTrigger);
        scheduler.start();
    }
}

QSchedule2班级

public class QSchedule2 implements Job {

    private static Date date1 = null;
    private static Date date2 = null;

    private static String dateStart = "";
    private static String dateStop = "";

    public void execute(JobExecutionContext context) throws JobExecutionException {
        q2();
    }

    public void q2() {
        String exp = "";
        try {
            Class.forName(driverClassName);
            con = DriverManager.getConnection(url, dbUsername, dbPassword);

            dateStop = new SimpleDateFormat("MM/dd/yyyy HH:mm:ss").format(System.currentTimeMillis());

            ps = con.prepareStatement(
                    "select report_name,frequency,emailDate from ErrorReport where sendReport='Yes'");
            rs = ps.executeQuery();

            while (rs.next()) {

                dateStart = new SimpleDateFormat("MM/dd/yyyy HH:mm:ss").format(rs.getTimestamp(3));

                SimpleDateFormat format = new SimpleDateFormat("MM/dd/yyyy HH:mm:ss");

                date1 = format.parse(dateStart);
                date2 = format.parse(dateStop);

                long diff = date2.getTime() - date1.getTime();

                long diffMinutes = diff / (60 * 1000) % 60;

                String frequency = rs.getString(2);
                int freq = Integer.parseInt(frequency);

                if (diffMinutes >= freq) {
                    exp = "0 0/" + freq + " * 1/1 * ? *";

                    Scheduler scheduler = StdSchedulerFactory.getDefaultScheduler();

                    JobDetail job = newJob(Q3.class).withIdentity("cronJob", "q3Job").build();

                    CronTrigger cronTrigger = newTrigger().withIdentity("trigger1", "q3Job")
                            .withSchedule(CronScheduleBuilder.cronSchedule(exp)).build();

                    scheduler.scheduleJob(job, cronTrigger);
                    scheduler.start();
                } else {
                    System.err.println("No email sent");
                }

            }

        } catch (Exception e) {
            System.out.println(e);
            e.printStackTrace();
        } finally {
            try {
                rs.close();
                ps.close();
                con.close();
            } catch (Exception e) {
                e.printStackTrace();
            }
        }
    }
}

QSchedule3班级

public class QSchedule3 implements Job{
    public void execute(JobExecutionContext context) throws JobExecutionException {
        //Get database contents here
    }
}

Answer 1

您可以使用JobExecutionContext将数据传递给作业。

在QSchedule2：

JobDetail job = newJob(QSchedule2.class).withIdentity("cronJob", "q2Job")
            .usingJobData("name", name)
            .usingJobData("frequency", frequency)
            .usingJobData("date", date)
            .build();

在QSchedule3.execute()：

JobDataMap dataMap = context.getJobDetail().getJobDataMap();
String name = dataMap.getString("name");
String frequency = dataMap.getString("frequency");
String date= dataMap.getString("date");

QuartzScheduler：将数据库值从一个类传递到另一个类

1 个答案: