任務調度開源框架Quartz動態添加、修改和刪除定時任務

時間 2019-11-11

標籤任務調度開源框架 quartz 動態添加修改刪除定時欄目 Quartz 简体版

原文原文鏈接

Quartz 是個開源的做業調度框架，爲在 Java 應用程序中進行做業調度提供了簡單卻強大的機制。Quartz框架包含了調度器監聽、做業和觸發器監聽。你能夠配置做業和觸發器監聽爲全局監聽或者是特定於做業和觸發器的監聽。Quartz 容許開發人員根據時間間隔（或天）來調度做業。它實現了做業和觸發器的多對多關係，還能把多個做業與不一樣的觸發器關聯。整合了 Quartz 的應用程序能夠重用來自不一樣事件的做業，還能夠爲一個事件組合多個做業。而且還能和Spring配置整合使用。Quartz在功能上遠遠超越了JDK自帶的Timer，很好很強大！好啦，直接上代碼：java

[java] view plain copy框架

/** ide
* @Description: 測試
* spa
* @Title: QuartzManager.java .net
* @Package com.joyce.quartz orm
* @Copyright : Copyright (c) 2014 blog
* 事件
* @author Comsys-LZP ip
* @date 2014-6-26 下午03:15:52
* @version V2.0
*/
package com.joyce.quartz;
import org.quartz.CronTrigger;
import org.quartz.JobDetail;
import org.quartz.Scheduler;
import org.quartz.SchedulerFactory;
import org.quartz.impl.StdSchedulerFactory;
/**
* @Description: 定時任務管理類
*
* @ClassName: QuartzManager
* @Copyright: Copyright (c) 2014
*
* @author Comsys-LZP
* @date 2014-6-26 下午03:15:52
* @version V2.0
*/
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";
/**
* @Description: 添加一個定時任務，使用默認的任務組名，觸發器名，觸發器組名
*
* @param jobName
* 任務名
* @param cls
* 任務
* @param time
* 時間設置，參考quartz說明文檔
*
* @Title: QuartzManager.java
* @Copyright: Copyright (c) 2014
*
* @author Comsys-LZP
* @date 2014-6-26 下午03:47:44
* @version V2.0
*/
@SuppressWarnings("unchecked")
public static void addJob(String jobName, Class cls, String time) {
try {
Scheduler sched = gSchedulerFactory.getScheduler();
JobDetail jobDetail = new JobDetail(jobName, JOB_GROUP_NAME, cls);// 任務名，任務組，任務執行類
// 觸發器
CronTrigger trigger = new CronTrigger(jobName, TRIGGER_GROUP_NAME);// 觸發器名,觸發器組
trigger.setCronExpression(time);// 觸發器時間設定
sched.scheduleJob(jobDetail, trigger);
// 啓動
if (!sched.isShutdown()) {
sched.start();
}
} catch (Exception e) {
throw new RuntimeException(e);
}
}
/**
* @Description: 添加一個定時任務
*
* @param jobName
* 任務名
* @param jobGroupName
* 任務組名
* @param triggerName
* 觸發器名
* @param triggerGroupName
* 觸發器組名
* @param jobClass
* 任務
* @param time
* 時間設置，參考quartz說明文檔
*
* @Title: QuartzManager.java
* @Copyright: Copyright (c) 2014
*
* @author Comsys-LZP
* @date 2014-6-26 下午03:48:15
* @version V2.0
*/
@SuppressWarnings("unchecked")
public static void addJob(String jobName, String jobGroupName,
String triggerName, String triggerGroupName, Class jobClass,
String time) {
try {
Scheduler sched = gSchedulerFactory.getScheduler();
JobDetail jobDetail = new JobDetail(jobName, jobGroupName, jobClass);// 任務名，任務組，任務執行類
// 觸發器
CronTrigger trigger = new CronTrigger(triggerName, triggerGroupName);// 觸發器名,觸發器組
trigger.setCronExpression(time);// 觸發器時間設定
sched.scheduleJob(jobDetail, trigger);
} catch (Exception e) {
throw new RuntimeException(e);
}
}
/**
* @Description: 修改一個任務的觸發時間(使用默認的任務組名，觸發器名，觸發器組名)
*
* @param jobName
* @param time
*
* @Title: QuartzManager.java
* @Copyright: Copyright (c) 2014
*
* @author Comsys-LZP
* @date 2014-6-26 下午03:49:21
* @version V2.0
*/
@SuppressWarnings("unchecked")
public static void modifyJobTime(String jobName, String time) {
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);
Class objJobClass = jobDetail.getJobClass();
removeJob(jobName);
addJob(jobName, objJobClass, time);
}
} catch (Exception e) {
throw new RuntimeException(e);
}
}
/**
* @Description: 修改一個任務的觸發時間
*
* @param triggerName
* @param triggerGroupName
* @param time
*
* @Title: QuartzManager.java
* @Copyright: Copyright (c) 2014
*
* @author Comsys-LZP
* @date 2014-6-26 下午03:49:37
* @version V2.0
*/
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;
// 修改時間
ct.setCronExpression(time);
// 重啓觸發器
sched.resumeTrigger(triggerName, triggerGroupName);
}
} catch (Exception e) {
throw new RuntimeException(e);
}
}
/**
* @Description: 移除一個任務(使用默認的任務組名，觸發器名，觸發器組名)
*
* @param jobName
*
* @Title: QuartzManager.java
* @Copyright: Copyright (c) 2014
*
* @author Comsys-LZP
* @date 2014-6-26 下午03:49:51
* @version V2.0
*/
public static void removeJob(String jobName) {
try {
Scheduler sched = gSchedulerFactory.getScheduler();
sched.pauseTrigger(jobName, TRIGGER_GROUP_NAME);// 中止觸發器
sched.unscheduleJob(jobName, TRIGGER_GROUP_NAME);// 移除觸發器
sched.deleteJob(jobName, JOB_GROUP_NAME);// 刪除任務
} catch (Exception e) {
throw new RuntimeException(e);
}
}
/**
* @Description: 移除一個任務
*
* @param jobName
* @param jobGroupName
* @param triggerName
* @param triggerGroupName
*
* @Title: QuartzManager.java
* @Copyright: Copyright (c) 2014
*
* @author Comsys-LZP
* @date 2014-6-26 下午03:50:01
* @version V2.0
*/
public static void removeJob(String jobName, String jobGroupName,
String triggerName, String triggerGroupName) {
try {
Scheduler sched = gSchedulerFactory.getScheduler();
sched.pauseTrigger(triggerName, triggerGroupName);// 中止觸發器
sched.unscheduleJob(triggerName, triggerGroupName);// 移除觸發器
sched.deleteJob(jobName, jobGroupName);// 刪除任務
} catch (Exception e) {
throw new RuntimeException(e);
}
}
/**
* @Description:啓動全部定時任務
*
*
* @Title: QuartzManager.java
* @Copyright: Copyright (c) 2014
*
* @author Comsys-LZP
* @date 2014-6-26 下午03:50:18
* @version V2.0
*/
public static void startJobs() {
try {
Scheduler sched = gSchedulerFactory.getScheduler();
sched.start();
} catch (Exception e) {
throw new RuntimeException(e);
}
}
/**
* @Description:關閉全部定時任務
*
*
* @Title: QuartzManager.java
* @Copyright: Copyright (c) 2014
*
* @author Comsys-LZP
* @date 2014-6-26 下午03:50:26
* @version V2.0
*/
public static void shutdownJobs() {
try {
Scheduler sched = gSchedulerFactory.getScheduler();
if (!sched.isShutdown()) {
sched.shutdown();
}
} catch (Exception e) {
throw new RuntimeException(e);
}
}
}

以上就是quartz任務調度對於任務的經常使用操做，封裝起來以便在外部調用！這樣咱們就須要任務的執行了：

[java] view plain copy

/**
* @Description:
*
* @Title: QuartzJob.java
* @Package com.joyce.quartz
* @Copyright: Copyright (c) 2014
*
* @author Comsys-LZP
* @date 2014-6-26 下午03:37:11
* @version V2.0
*/
package com.joyce.quartz;
import java.text.SimpleDateFormat;
import java.util.Date;
import org.quartz.Job;
import org.quartz.JobExecutionContext;
import org.quartz.JobExecutionException;
/**
* @Description: 任務執行類
*
* @ClassName: QuartzJob
* @Copyright: Copyright (c) 2014
*
* @author Comsys-LZP
* @date 2014-6-26 下午03:37:11
* @version V2.0
*/
public class QuartzJob implements Job {
@Override
public void execute(JobExecutionContext arg0) throws JobExecutionException {
System.out.println(new SimpleDateFormat("yyyy-MM-dd HH:mm:ss").format(new Date())+ "★★★★★★★★★★★");
}
}