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Spring+Quartz實現(xiàn)動態(tài)任務(wù)調(diào)度詳解

 更新時間:2024年01月09日 08:38:14   作者:it_lihongmin  
這篇文章主要介紹了Spring+Quartz實現(xiàn)動態(tài)任務(wù)調(diào)度詳解,最近經(jīng)常基于spring?boot寫定時任務(wù),并且是使用注解的方式進行實現(xiàn),分成的方便將自己的類注入spring容器,需要的朋友可以參考下

一、定時任務(wù)的實現(xiàn)

1、配置文件方式

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE beans PUBLIC "-//SPRING//DTD BEAN//EN" "http://www.springframework.org/dtd/spring-beans.dtd">
 
<beans>
	<bean id="userTimer" class="com.kevin.timer.XmlTimer"></bean>
	
	<bean id="userTask"
		class="org.springframework.scheduling.quartz.MethodInvokingJobDetailFactoryBean">
		<property name="targetObject">
			<ref bean="userTimer" />
		</property>
		<property name="targetMethod">
			<value>execute</value>
		</property>
	</bean>
	
	<!-- 每隔5秒鐘執(zhí)行一次,我要在運行時動態(tài)修改為每小時執(zhí)行一次 -->
	<bean id="userTrigger" class="org.springframework.scheduling.quartz.CronTriggerFactoryBean">
		<property name="jobDetail">
			<ref bean="userTask" />
		</property>
		<property name="cronExpression">
			<value>0/5 * * * * ?</value>
		</property>
	</bean>
	
	
	<bean id="startQuertz" lazy-init="false" autowire="no" class="org.springframework.scheduling.quartz.SchedulerFactoryBean">
		<property name="triggers">
			<list>
				<ref bean="userTrigger" />
			</list>
		</property>
	</bean>
 
</beans>

2、注解方式

我最近經(jīng)常基于spring boot寫定時任務(wù),并且是使用注解的方式進行實現(xiàn),分成的方便將自己的類注入spring容器(@conponent等),

并在要實現(xiàn)父方法上添加注解 @Scheduled(cron="0/10 * * * * ?") ,告知任務(wù)調(diào)度器質(zhì)性方法中的業(yè)務(wù)邏輯的質(zhì)性時間。

二、任務(wù)調(diào)用的工作原理

三、動態(tài)任務(wù)調(diào)用的實現(xiàn)

首先定義任務(wù)實體應(yīng)該具有的屬性:

package com.kevin.schedule.entity;
/**
 * 調(diào)度任務(wù)定義
 * @author Tom
 *
 */
public class Task {
	private String id;				//任務(wù)ID,默認系統(tǒng)時間戳
	private String parentId = "";	//父級任務(wù)ID
	private String name = "";		//任務(wù)名稱
	private String desc = "";		//任務(wù)描述
	private int planExe = 0;		//計劃執(zhí)行次數(shù),默認為0,表示滿足條件循環(huán)執(zhí)行
	private String group = "";		//任務(wù)組名稱
	private String groupDesc = "";	//任務(wù)組描述
	private String cron = "";		//任務(wù)表達式
	private String cronDesc = "";	//表達式描述
	private String trigger = "";	//觸發(fā)器
	private String triggerDesc = "";//觸發(fā)器描述
	private int execute = 0;		//任務(wù)被執(zhí)行過多少次
	private Long lastExeTime = 0L;	//最后一次開始執(zhí)行時間
	private Long lastFinishTime = 0L;//最后一次執(zhí)行完成時間
	private int state = 1;			//任務(wù)狀態(tài)0禁用、1啟動、2刪除
	private int deply = 0;			//延時啟動,默認為0,表示不延時啟動
	public Task(String taskId){
		this.id = taskId;
	}
	public String getId() {
		return id;
	}
	public void setId(String id) {
		this.id = id;
	}
	public String getParentId() {
		return parentId;
	}
	public void setParentId(String parentId) {
		this.parentId = parentId;
	}
	public String getName() {
		return name;
	}
	public void setName(String name) {
		this.name = name;
	}
	public String getCron() {
		return cron;
	}
	public void setCron(String cron) {
		this.cron = cron;
	}
	public String getCronDesc() {
		return cronDesc;
	}
	public void setCronDesc(String cronDesc) {
		this.cronDesc = cronDesc;
	}
//	public List<ScheduleJob> getChildren() {
//		return children;
//	}
//	public void setChildren(List<ScheduleJob> children) {
//		this.children = children;
//	}
	public int getExecute() {
		return execute;
	}
	public void setExecute(int execute) {
		this.execute = execute;
	}
	public String getDesc() {
		return desc;
	}
	public void setDesc(String desc) {
		this.desc = desc;
	}
	public String getGroup() {
		return group;
	}
	public void setGroup(String group) {
		this.group = group;
	}
	public String getGroupDesc() {
		return groupDesc;
	}
	public void setGroupDesc(String groupDesc) {
		this.groupDesc = groupDesc;
	}
	public int getState() {
		return state;
	}
	public void setState(int state) {
		this.state = state;
	}
	public Long getLastExeTime() {
		return lastExeTime;
	}
	public void setLastExeTime(Long lastExeTime) {
		this.lastExeTime = lastExeTime;
	}
	public String getTrigger() {
		return trigger;
	}
	public void setTrigger(String trigger) {
		this.trigger = trigger;
	}
	public String getTriggerDesc() {
		return triggerDesc;
	}
	public void setTriggerDesc(String triggerDesc) {
		this.triggerDesc = triggerDesc;
	}
	public int getDeply() {
		return deply;
	}
	public void setDeply(int deply) {
		this.deply = deply;
	}
	public int getPlanExe() {
		return planExe;
	}
	public void setPlanExe(int planExe) {
		this.planExe = planExe;
	}
//	public String getTriggerGroup() {
//		return triggerGroup;
//	}
//	public void setTriggerGroup(String triggerGroup) {
//		this.triggerGroup = triggerGroup;
//	}
//	public String getTriggerGroupDesc() {
//		return triggerGroupDesc;
//	}
//	public void setTriggerGroupDesc(String triggerGroupDesc) {
//		this.triggerGroupDesc = triggerGroupDesc;
//	}
	public Long getLastFinishTime() {
		return lastFinishTime;
	}
	public void setLastFinishTime(Long lastFinishTime) {
		this.lastFinishTime = lastFinishTime;
	}
}
package com.kevin.schedule.proxy;
import java.lang.reflect.Method;
import org.quartz.Job;
import org.quartz.JobDataMap;
import org.quartz.JobExecutionContext;
import org.quartz.JobExecutionException;
import com.gupaoedu.schedule.entity.Task;
/**
 * 
 * @author Tom
 *
 */
public class TriggerProxy implements Job{
	public static final String DATA_TARGET_KEY = "target";		//目標對象,實例
	public static final String DATA_TRIGGER_KEY = "trigger";	//方法名
	public static final String DATA_TRIGGER_PARAMS_KEY = "trigger_params";//方法的參數(shù)值
	public static final String DATA_TASK_KEY = "task";			//自己封裝的任務(wù)對象
	private ThreadLocal<Entry> local = new ThreadLocal<Entry>();
	//是由調(diào)度器自動調(diào)用的
	public void execute(JobExecutionContext context) throws JobExecutionException {
//		TriggerProxy.class.getResource("")
		try {
			local.set(new Entry());
			//獲取參數(shù)信息
			JobDataMap data = context.getTrigger().getJobDataMap();
			Object target = data.get(DATA_TARGET_KEY);
			Method method = (Method)data.get(DATA_TRIGGER_KEY);
			Object[] params = (Object[])data.get(DATA_TRIGGER_PARAMS_KEY);
			//修改任務(wù)執(zhí)行次數(shù)
			Task task = (Task)data.get(DATA_TASK_KEY);
			//任務(wù)沒執(zhí)行一次,需要累加1
			task.setExecute(task.getExecute() + 1);
			local.get().start = System.currentTimeMillis();
			//調(diào)用觸發(fā)器,用反射調(diào)用我們自己定義的方法
			method.invoke(target,params);
			local.get().end = System.currentTimeMillis();
			//記錄任務(wù)的最后一次執(zhí)行時間
			task.setLastExeTime(local.get().start);
			//記錄任務(wù)完成的時間
			task.setLastFinishTime(local.get().end);
		} catch (Exception e) {
			e.printStackTrace();
		}
	}
	class Entry{
		public long start = 0L;
		public long end = 0L;
	}
}
@Component
public class AnnotationTimer {
	Logger LOG = Logger.getLogger(this.getClass());
	@Scheduled(cron="0/10 * * * * ?")
	@Async
	public void a(){
		LOG.info("annotation配置的任務(wù)執(zhí)行");
	}
}

定義動態(tài)任務(wù)調(diào)度需要的方法,在web項目中,通過界面的方式調(diào)用方法以動態(tài)控制和查看任務(wù)調(diào)度的執(zhí)行情況:

package com.kevin.schedule.service;
import java.util.List;
import com.gupaoedu.schedule.entity.Task;
public interface IScheduleService {
	/**
	 * 獲取任務(wù)列表
	 * @return
	 */
	public List<Task> getAllTask();
	/**
	 * 根據(jù)任務(wù)ID獲取一個任務(wù)
	 * @return
	 */
	public Task getTask(String taskId);
	/**
	 * 新建一個任務(wù)
	 * @param taskName 任務(wù)名稱
	 * @param taskClassName	任務(wù)Class名稱
	 * @param triggerName 觸發(fā)器名稱
	 * @param cron	執(zhí)行表達式
	 * @throws Exception
	 */
	public Task createTask(String taskName,String taskClassName,String triggerName,String cron) throws Exception;
    /** 
     * 修改一個任務(wù)的觸發(fā)時間(使用默認的任務(wù)組名,觸發(fā)器名,觸發(fā)器組名) 
     *  
     */  
    public Task modifyTaskCron(String taskId, String cron);
    /** 
     * 移除一個任務(wù)(使用默認的任務(wù)組名,觸發(fā)器名,觸發(fā)器組名) 
     *  
     */  
    public Task removeTask(String taskId);
    /**
     * 重啟任務(wù)
     * @param taskId
     * @return
     */
    public Task restartTask(String taskId);
    /**
     * 暫停定時任務(wù)
     * @param taskId
     * @return
     */
    public Task pauseTask(String taskId);
    /**
     * 關(guān)閉定時任務(wù)
     * @param taskId
     * @return
     */
    public Task shutdownTask(String taskId);
    /** 
     * 啟動所有定時任務(wù) 
     *  
     */
    public void startAllTask();
    /** 
     * 關(guān)閉所有定時任務(wù) 
     */  
    public void shutdownAllTask();
}

實現(xiàn)方法:

package com.kevin.schedule.service.impl;
import java.lang.annotation.Annotation;
import java.lang.reflect.Method;
import java.util.ArrayList;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;
import org.quartz.CronTrigger;
import org.quartz.JobDetail;
import org.quartz.Scheduler;
import org.springframework.beans.BeansException;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;
import org.springframework.scheduling.annotation.Scheduled;
import org.springframework.scheduling.quartz.SchedulerFactoryBean;
import org.springframework.stereotype.Service;
import com.gupaoedu.schedule.entity.Task;
import com.gupaoedu.schedule.proxy.TriggerProxy;
import com.gupaoedu.schedule.service.IScheduleService;
/**
 * 任務(wù)管理,負責(zé)輸出和管理日志
 * @author Tom
 */
@Service
public class ScheduleService implements IScheduleService,ApplicationContextAware{
	//自己不能再重新搞一個工廠出來,必須和Spring引用的調(diào)度工廠是同一個
	//才能實現(xiàn)無縫集成,而且可以動態(tài)修改配置文件已經(jīng)配置好的任務(wù)
	@Autowired private SchedulerFactoryBean schedulerFactory;
	//保存所有任務(wù)表達式的描述
	private Map<String,String> cronDesc = new LinkedHashMap<String,String>(); 
	//所有的任務(wù)都放到任務(wù)池中
	private static Map<String,Task> taskPool = new LinkedHashMap<String,Task>();
	private static ApplicationContext app;
	public ScheduleService(){}
	/**
	 * 創(chuàng)建一個調(diào)度任務(wù)
	 * @param m
	 * @return
	 * @throws Exception
	 */
	private Task createTask(Method m) throws Exception{
		//任務(wù)ID就是時間戳,再加上一個隨機數(shù)
		Task task = new Task("" + System.currentTimeMillis());
		//通過方法,可以獲取到方法所在的class
		Class clazz = m.getDeclaringClass();
		//設(shè)置任務(wù)組
		task.setGroup(clazz.getName());
		//設(shè)置觸發(fā)器信息
		//一個觸發(fā)器對應(yīng)一個方法,在此處,所謂的觸發(fā)器還只是一個概念
		//概念是一個字符描述,它記錄了觸發(fā)的目標信息
		task.setTrigger(clazz.getName() + "." + m.getName());
		Annotation sc = m.getAnnotation(Scheduled.class);
		Method cronM = sc.getClass().getMethod("cron",null);
		String cron = cronM.invoke(sc, null).toString();
		task.setTriggerDesc(cronDesc.get(cron));
		task.setCron(cron);
		task.setCronDesc(cronDesc.get(cron));
		//此時,就已經(jīng)完成一個task的封裝
		return task;
	}
	@Override
	public void setApplicationContext(ApplicationContext app) throws BeansException {
		this.app = app;
		//加載所有任務(wù)到任務(wù)隊列
 		for(String name : app.getBeanDefinitionNames()){
			try{
				Class<?> c = app.getBean(name).getClass();
				for(Method m : c.getMethods()){
					//只要是添加了Scheduled注解的都給他添加到調(diào)度工廠中
					if(m.isAnnotationPresent(Scheduled.class)){
						Task task = createTask(m);
						//將任務(wù)加入隊列準備啟動
						createTask(task);
					}
				}
			}catch(Exception e){
				continue;
			}
		}
	}
	public Task getTask(String taskId) {
		return taskPool.get(taskId);
	}
	@Override
	public List<Task> getAllTask() {
		if(taskPool.size() == 0){
			return new ArrayList<Task>();
		}
		List<Task> r = new ArrayList<Task>();
		r.addAll(taskPool.values());
		return r;
	}
	private Task createTask(Task task) throws Exception{
		if(null == task.getGroup() || task.getGroup().trim().length() == 0){ return null; }
		//還是拿到字節(jié)碼
		Class<?> clazz = Class.forName(task.getGroup());
		//先從容器中獲取
		Object target = null;
		try{
			//從Spring容器中提取已經(jīng)創(chuàng)建好的對象引用
			target = app.getBean(clazz);
		}catch(Exception e){
		}
		//如果Spring容器沒有幫我們創(chuàng)建,那么就自己創(chuàng)建實例
		if(target == null){
			target = clazz.newInstance();
		}
		//把觸發(fā)器需要調(diào)用的方法找出來,還是用反射
		Method m = clazz.getMethod(task.getTrigger().replaceAll(task.getGroup() + ".", ""));
		//把任務(wù)ID取出來,時間戳
		String taskId = task.getId();
		//================ 事前準備  ====================
		//拿到Quartz中的調(diào)度器
		Scheduler sched = schedulerFactory.getScheduler();
		//創(chuàng)建一個Detail
        JobDetail taskDetail = new JobDetail(taskId, task.getGroup(), TriggerProxy.class);// 任務(wù)名,任務(wù)組,任務(wù)執(zhí)行類  
        // 觸發(fā)器
        CronTrigger trigger = new CronTrigger(taskId, task.getTrigger());// 觸發(fā)器名,觸發(fā)器組 
        //在這里設(shè)置CronExpression表達式
        trigger.setCronExpression(task.getCron());// 觸發(fā)器時間設(shè)定  
        //JobDataMap   用來存儲附加信息
        //利用這么一個API,把自定義的信息添加到Map中
        trigger.getJobDataMap().put(TriggerProxy.DATA_TARGET_KEY, target);
        trigger.getJobDataMap().put(TriggerProxy.DATA_TRIGGER_KEY, m);
//        m.getParameterTypes()
        trigger.getJobDataMap().put(TriggerProxy.DATA_TRIGGER_PARAMS_KEY, new Object[]{});
        trigger.getJobDataMap().put(TriggerProxy.DATA_TASK_KEY, task);
        sched.scheduleJob(taskDetail, trigger);
        // 如果這個任務(wù)沒有被主動關(guān)閉,我們就給他啟動
        if (!sched.isShutdown()) {  
            sched.start();  
        }
        //放入我們的任務(wù)池
        if(!taskPool.containsKey(taskId)){
        	taskPool.put(taskId, task);
		}
        return task;
	}
	/** 
     * 添加一個定時任務(wù),使用默認的任務(wù)組名,觸發(fā)器名,觸發(fā)器組名 
     */  
    public Task createTask(String taskName,String taskClassName,String triggerName,String cron) throws Exception{
    	return createTask(taskName,null,taskClassName,null,triggerName,cron);
    }
    /** 
     * 添加一個定時任務(wù) 
     */  
    private Task createTask(String taskName, String taskGroupName, String taskClassName,String triggerGroupName, String triggerName,String cron)  throws Exception{  
    	//根據(jù)類名,利用反射機制獲取到類的字節(jié)碼
    	//約定優(yōu)于配置
    	Class<?> clazz = Class.forName(taskClassName); //就是類名全程,包名.類名
    	Method m = clazz.getMethod(triggerName);		//顯然就是方法名
    	Task task = createTask(m);
    	task.setName(taskName);
    	if(null != taskGroupName){
    		task.setGroup(taskGroupName);
    	}
    	task.setCron(cron);
    	return createTask(task);
    }
    /** 
     * 修改一個任務(wù)的觸發(fā)時間(使用默認的任務(wù)組名,觸發(fā)器名,觸發(fā)器組名) 
     *  
     */  
    public Task modifyTaskCron(String taskId, String cron) {  
    	Task task = taskPool.get(taskId);
        try {
            Scheduler sched = schedulerFactory.getScheduler();  
            CronTrigger trigger = (CronTrigger) sched.getTrigger(taskId,task.getTrigger());  
            String oldTime = trigger.getCronExpression();  
            if (!oldTime.equalsIgnoreCase(cron)) {  
                JobDetail taskDetail = sched.getJobDetail(taskId,task.getGroup());  
                Class objJobClass = taskDetail.getJobClass();
                removeTask(taskId);
                //重新生成ID
                task.setId("" + System.currentTimeMillis());
                task.setCron(cron);
                createTask(task);
            }  
        } catch (Exception e) {  
            throw new RuntimeException(e);  
        }
        return task;
    }
    /** 
     * 移除一個任務(wù)(使用默認的任務(wù)組名,觸發(fā)器名,觸發(fā)器組名) 
     *  
     */  
    public Task removeTask(String taskId) {  
    		Task task = taskPool.get(taskId);
        try {
            Scheduler sched = schedulerFactory.getScheduler();  
            sched.pauseTrigger(taskId, task.getTrigger());// 停止觸發(fā)器  
            sched.unscheduleJob(taskId, task.getGroup());// 移除觸發(fā)器  
            sched.deleteJob(taskId, task.getGroup());// 刪除任務(wù) 
            taskPool.remove(taskId);
        } catch (Exception e) {  
            throw new RuntimeException(e);  
        }
        return task;
    }
    /**
     * 暫停任務(wù)
     * @param taskId
     */
    public Task pauseTask(String taskId){
    		Task task = taskPool.get(taskId);
    		try {
            Scheduler sched = schedulerFactory.getScheduler();  
            sched.pauseTrigger(task.getId(), task.getTrigger());// 停止觸發(fā)器  
        } catch (Exception e) {  
            throw new RuntimeException(e);  
        }
    		return task;
    }
    /** 
     * 
     *  
     */
    public Task restartTask(String taskId) {
    		Task task = taskPool.get(taskId);
		try {
			Scheduler sched = schedulerFactory.getScheduler();  
		      // 重啟觸發(fā)器  
			sched.resumeTrigger(task.getId(),task.getTrigger());  
		} catch (Exception e) {  
			throw new RuntimeException(e);  
		} 
        return task;
    }
    /**
     * 關(guān)閉任務(wù)
     * @param taskId
     */
    public Task shutdownTask(String taskId){
    		Task task = taskPool.get(taskId);
    	 	try {
             Scheduler sched = schedulerFactory.getScheduler();  
             sched.pauseTrigger(taskId, task.getTrigger());// 停止觸發(fā)器  
             sched.unscheduleJob(taskId, task.getGroup());// 移除觸發(fā)器  
             sched.deleteJob(taskId, task.getGroup());// 刪除任務(wù) 
         } catch (Exception e) {  
             throw new RuntimeException(e);  
         }
    	 	return task;
    }
    /** 
     * 啟動所有定時任務(wù) 
     *  
     */
    public void startAllTask() {  
        try {  
            Scheduler sched = schedulerFactory.getScheduler();  
            sched.start();  
        } catch (Exception e) {  
            throw new RuntimeException(e);  
        }
    }
    /** 
     * 關(guān)閉所有定時任務(wù) 
     */  
    public void shutdownAllTask() {  
        try {  
            Scheduler sched = schedulerFactory.getScheduler();  
            if (!sched.isShutdown()) {  
                sched.shutdown();  
            }  
        } catch (Exception e) {  
            throw new RuntimeException(e);  
        } 
    }
}

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