每次任务 创建 一个 Scheduler,运行完直接shutdown ,同时运行不相互影响.

创建Scheduler 不相互影响

用默认工厂类获取scheduler 实例 code 如下:

StdSchedulerFactory schf = newStdSchedulerFactory();

scheduler = schf.getScheduler();

但多次初始化:

 

例如

List list = new ArrayList();

for(int i = 0;i<10;i++)

{

StdSchedulerFactory schf =newStdSchedulerFactory();

scheduler= schf.getScheduler();

list .add(scheduler);

}

但是获取都是一个默认的Scheduler.即调用getDefaultScheduler

若需要获得不同的scheduler for中代码如下

Properties props = new Properties();

props.put("org.quartz.scheduler.instanceName", i+"");// 不同name

props.put("org.quartz.threadPool.class","org.quartz.simpl.SimpleThreadPool");

props.put("org.quartz.threadPool.threadCount","10");

StdSchedulerFactory schf = new StdSchedulerFactory();

schf.initialize(props);

scheduler = schf.getScheduler();

Scheduler 可以经过默认的配置文件 设置Scheduler name.由此不同实例里的Scheduler

是不同的,一个Scheduler.shutdown 不再会相互影响.

第二. 灵活配置time

例子如下:

private Scheduler scheduler;

    // public SchedulerUtil() throws SchedulerException
    // {
    // StdSchedulerFactory schf = new StdSchedulerFactory();
    // scheduler = schf.getScheduler();
    // }

    public SchedulerUtil(String name) throws SchedulerException
    {
        Properties props = new Properties();
        props.put("org.quartz.scheduler.instanceName", name);
        props.put("org.quartz.threadPool.class", "org.quartz.simpl.SimpleThreadPool");
        props.put("org.quartz.threadPool.threadCount", "10");
        StdSchedulerFactory schf = new StdSchedulerFactory();
        schf.initialize(props);
        scheduler = schf.getScheduler();

    }

    JobDetail jb1 = new JobDetail("job_1", "group_1", SimpleJob.class);
    
    public void taskRun()throws Exception
    {
        CronTrigger ct = new CronTrigger("trigger", "group");
        ct.setCronExpression("0/1 * * * * ?");
        scheduler.scheduleJob(jb1, ct);
        scheduler.start();
    }
    public void modifyTaskTime()throws Exception
    {
        CronTrigger ct = (CronTrigger) scheduler.getTrigger("trigger", "group");
        ct.setCronExpression("0/3 * * * * ?");
        scheduler.deleteJob("job_1", "group_1");
        scheduler.scheduleJob(jb1, ct);
    }</span>