Quartz带参数任务的创建与修改

需求背景：创建的quartz任务需要用到三个参数，根据参数去执行并将结果入库，并且参数可修改更新。

这里，有三个参数需要传入，分别是planId、target、officeId

定义Job类：

public class StatisticsTaskService implements Job {

    private Logger logger = LoggerFactory.getLogger(StatisticsTaskService.class);

    private StatusStatisticsService statusStatisticsService = ApplicationContextHelper.getBean(StatusStatisticsService.class);

    @Override
    public void execute(JobExecutionContext context) throws JobExecutionException {
        
        JobDataMap dataMap = context.getJobDetail().getJobDataMap();
        JobParameter jobParam = (JobParameter)dataMap.get(JobParameter.JOB_PARAM);

                String planId = jobParam.getPlanId();
        String target = jobParam.getTarget();
        String officeId = jobParam.getOfficeId();
        //System.out.println(jobParam.toString());

        //根据传入的target参数执行不同操作
        if(target.equals("1")){
            //执行操作1
        }else if(target.equals("2")){
            //执行操作2
        }else{
            //执行其他操作
        }
        logger.info("Job:"+planId+"  target:"+target);
    }
}

定义参数类：

public class JobParameter implements Serializable{    private static final long serialVersionUID = 1L;

    public static final String JOB_PARAM = "jobParam";

    private String planId;
    private String target;
    private String officeId;

    public String getPlanId() {
        return planId;
    }
    public void setPlanId(String planId) {
        this.planId = planId;
    }
    public String getTarget() {
        return target;
    }
    public void setTarget(String target) {
        this.target = target;
    }
    public String getOfficeId() {
        return officeId;
    }
    public void setOfficeId(String officeId) {
        this.officeId = officeId;
    }

    @Override
    public String toString() {
        return "JobParameter [planId=" + planId + ", target=" + target + ", officeId=" + officeId + "]";
    }
}

创建任务创建和修改方法：

1.创建任务：

public static void createScheduleJobWithParams(Scheduler scheduler, String jobName,
            String jobGroup, String cronExpression, Class<? extends Job> jobClass,
　　　　　　　　String planId,String target,String officeId) {
        // 构建job信息
        JobDetail jobDetail = JobBuilder.newJob(jobClass)
        .withIdentity(jobName, jobGroup)
        .build();
        //创建初始参数
        JobParameter jobParam = new JobParameter();
        jobParam.setPlanId(planId);
        jobParam.setTarget(target);
        jobParam.setOfficeId(officeId);
        jobDetail.getJobDataMap().put(JobParameter.JOB_PARAM, jobParam);

        CronScheduleBuilder scheduleBuilder = CronScheduleBuilder
        .cronSchedule(cronExpression);

        CronTrigger trigger = TriggerBuilder.newTrigger()
        .withIdentity(jobName, jobGroup).withSchedule(scheduleBuilder)
        .build();
            try {
                scheduler.scheduleJob(jobDetail, trigger);
                if (!scheduler.isStarted()) {
                scheduler.start();
                }
            } catch (SchedulerException e) {
                e.printStackTrace();
            }
        }

2.修改任务:

public static void updateScheduleJobWithParams(Scheduler scheduler, String jobName, String jobGroup, String cronExpression,
　　　　　　String planId,String target) {
        try {
            TriggerKey triggerKey = getTriggerKey(jobName, jobGroup);
            CronScheduleBuilder scheduleBuilder = CronScheduleBuilder.cronSchedule(cronExpression);
            CronTrigger trigger = (CronTrigger) scheduler.getTrigger(triggerKey);
            // 按新的cronExpression表达式重新构建trigger
            trigger = trigger.getTriggerBuilder().withIdentity(triggerKey).withSchedule(scheduleBuilder).build();
            //参数修改
            JobKey jobKey = getJobKey(jobName, jobGroup);
            JobParameter jobParam = (JobParameter) scheduler.getJobDetail(jobKey).getJobDataMap().get(JobParameter.JOB_PARAM);
            jobParam.setPlanId(planId);
            jobParam.setTarget(target);
            // 按新的trigger重新设置job执行
            scheduler.rescheduleJob(triggerKey, trigger);

        } catch (SchedulerException e) {
            e.printStackTrace();
        }
    }

编码总结：

最开始时我将三个参数直接put进JobDetail的JobDataMap，发现任务中能够正常读取，但是在更新参数是发现set后值不变，不知是不是JobDataMap继承DirtyFlagMap的原因，没有深究。

后将三个参数封装为对象，并实现序列化，以对象形式传入，修改就没有问题了。

参考链接：http://sulaohuai.blog.51cto.com/10674946/1702625