Quartz（任务调度）- 入门学习
参照：http://blog.csdn.net/szwangdf/article/details/6158646
1.自定义定时任务管理类 QuartzManager
参照大神基础上
新增：1.添加job时传入参数JobDataMap
2.json和JobDataMap的互相转换
import java.text.ParseException; import java.util.Iterator; import net.sf.json.JSONObject; import org.quartz.CronTrigger; import org.quartz.JobDataMap; import org.quartz.JobDetail; import org.quartz.Scheduler; import org.quartz.SchedulerException; import org.quartz.SchedulerFactory; import org.quartz.impl.StdSchedulerFactory; /** * 定时任务管理类 * @author peak * */ public class QuartzManager { private static SchedulerFactory gSchedulerFactory = new StdSchedulerFactory(); private static String JOB_GROUP_NAME = "EXTJWEB_JOBGROUP_NAME"; private static String TRIGGER_GROUP_NAME = "EXTJWEB_TRIGGERGROUP_NAME"; /** * 添加一个定时任务，使用默认的任务组名，触发器名，触发器组名 * * @param jobName * 任务名 * @param jobClass * 任务 * @param time * 时间设置，参考quartz说明文档 * @param jobDataMap * 参数map * @throws SchedulerException * @throws ParseException */ public static void addJob(String jobName, String jobClass, String time,JobDataMap jobDataMap) { try { Scheduler sched = gSchedulerFactory.getScheduler(); JobDetail jobDetail = new JobDetail(jobName, JOB_GROUP_NAME, Class.forName(jobClass));// 任务名，任务组，任务执行类 if(jobDataMap!=null){ jobDetail.setJobDataMap(jobDataMap); } // 触发器 CronTrigger trigger = new CronTrigger(jobName, TRIGGER_GROUP_NAME);// 触发器名,触发器组 trigger.setCronExpression(time);// 触发器时间设定 sched.scheduleJob(jobDetail, trigger); // 启动 if (!sched.isShutdown()){ sched.start(); } } catch (Exception e) { e.printStackTrace(); throw new RuntimeException(e); } } /** * 添加一个定时任务 * * @param jobName * 任务名 * @param jobGroupName * 任务组名 * @param triggerName * 触发器名 * @param triggerGroupName * 触发器组名 * @param jobClass * 任务 * @param time * 时间设置，参考quartz说明文档 * @throws SchedulerException * @throws ParseException */ public static void addJob(String jobName, String jobGroupName, String triggerName, String triggerGroupName, String jobClass, String time,JobDataMap jobDataMap){ try { Scheduler sched = gSchedulerFactory.getScheduler(); JobDetail jobDetail = new JobDetail(jobName, jobGroupName, Class.forName(jobClass));// 任务名，任务组，任务执行类 if(jobDataMap!=null){ jobDetail.setJobDataMap(jobDataMap); } // 触发器 CronTrigger trigger = new CronTrigger(triggerName, triggerGroupName);// 触发器名,触发器组 trigger.setCronExpression(time);// 触发器时间设定 sched.scheduleJob(jobDetail, trigger); } catch (Exception e) { e.printStackTrace(); throw new RuntimeException(e); } } /** * 修改一个任务的触发时间(使用默认的任务组名，触发器名，触发器组名) * * @param jobName * @param time */ public static void modifyJobTime(String jobName, String time,JobDataMap jobDataMap) { try { Scheduler sched = gSchedulerFactory.getScheduler(); CronTrigger trigger = (CronTrigger) sched.getTrigger(jobName, TRIGGER_GROUP_NAME); if(trigger == null) { return; } String oldTime = trigger.getCronExpression(); if (!oldTime.equalsIgnoreCase(time)) { JobDetail jobDetail = sched.getJobDetail(jobName, JOB_GROUP_NAME); if(jobDataMap!=null){ jobDetail.setJobDataMap(jobDataMap); } Class objJobClass = jobDetail.getJobClass(); String jobClass = objJobClass.getName(); removeJob(jobName); addJob(jobName, jobClass, time,jobDataMap); } } catch (Exception e) { e.printStackTrace(); throw new RuntimeException(e); } } /** * 修改一个任务的触发时间 * * @param triggerName * @param triggerGroupName * @param time */ public static void modifyJobTime(String triggerName, String triggerGroupName, String time) { try { Scheduler sched = gSchedulerFactory.getScheduler(); CronTrigger trigger = (CronTrigger) sched.getTrigger(triggerName, triggerGroupName); if(trigger == null) { return; } String oldTime = trigger.getCronExpression(); if (!oldTime.equalsIgnoreCase(time)) { CronTrigger ct = (CronTrigger) trigger; // 修改时间 ct.setCronExpression(time); // 重启触发器 sched.resumeTrigger(triggerName, triggerGroupName); } } catch (Exception e) { e.printStackTrace(); throw new RuntimeException(e); } } /** * 移除一个任务(使用默认的任务组名，触发器名，触发器组名) * * @param jobName */ public static void removeJob(String jobName) { try { Scheduler sched = gSchedulerFactory.getScheduler(); sched.pauseTrigger(jobName, TRIGGER_GROUP_NAME);// 停止触发器 sched.unscheduleJob(jobName, TRIGGER_GROUP_NAME);// 移除触发器 sched.deleteJob(jobName, JOB_GROUP_NAME);// 删除任务 } catch (Exception e) { e.printStackTrace(); throw new RuntimeException(e); } } /** * 移除一个任务 * * @param jobName * @param jobGroupName * @param triggerName * @param triggerGroupName */ public static void removeJob(String jobName, String jobGroupName, String triggerName, String triggerGroupName) { try { Scheduler sched = gSchedulerFactory.getScheduler(); sched.pauseTrigger(triggerName, triggerGroupName);// 停止触发器 sched.unscheduleJob(triggerName, triggerGroupName);// 移除触发器 sched.deleteJob(jobName, jobGroupName);// 删除任务 } catch (Exception e) { e.printStackTrace(); throw new RuntimeException(e); } } /** * 启动所有定时任务 */ public static void startJobs() { try { Scheduler sched = gSchedulerFactory.getScheduler(); sched.start(); } catch (Exception e) { e.printStackTrace(); throw new RuntimeException(e); } } /** * 关闭所有定时任务 */ public static void shutdownJobs() { try { Scheduler sched = gSchedulerFactory.getScheduler(); if(!sched.isShutdown()) { sched.shutdown(); } } catch (Exception e) { e.printStackTrace(); throw new RuntimeException(e); } } /** * jobDataMap 转换为 json字符串 * @param jobDataMap * @return */ public static String jobDataMap2json(JobDataMap jobDataMap){ String[] keys = jobDataMap.getKeys(); JSONObject jsonObject = new JSONObject(); for (int i = 0; i < keys.length; i++) { jsonObject.put(keys[i], jobDataMap.get(keys[i])); } return jsonObject.toString(); } /** * json字符串 转换为 jobDataMap * @param json * @return */ public static JobDataMap json2jobDataMap(String json){ JobDataMap jobDataMap = new JobDataMap(); JSONObject jsonObject = JSONObject.fromObject(json); Iterator it = jsonObject.keys(); while (it.hasNext()) { String key = (String) it.next(); String value = jsonObject.getString(key); jobDataMap.put(key, value); } return jobDataMap; } }
2.简单使用
添加任务（cron表达式）
String job_name = "TestJob"+UUID.randomUUID(); String job = "com.peak.TestJob";//全路径 JobDataMap jobDataMap = new JobDataMap(); jobDataMap.put("uuid",""+UUID.randomUUID()); //cron表达式 String cron = "*/5 * * * * ?"; //简单的添加作业 QuartzManager.addJob(job_name, job, cron,jobDataMap);
任务(串行避免死锁)
//具体任务类，实现了StatefulJob（单例，串行避免死锁），可实现Job接口（多例，并行） public class TestJob implements StatefulJob{ //执行任务 @Override public void execute(JobExecutionContext context) throws JobExecutionException { JobDetail jobDetail = context.getJobDetail(); JobDataMap jobDataMap = jobDetail.getJobDataMap(); //获取传入参数 String uuid = jobDataMap.getString("uuid"); //获取jobName String jobName = jobDetail.getName(); } }
