Quartz定时器可视化管理功能的简单实现

众所周知,Quartz框架是一款强大的定时器框架,下面简单地介绍下Quartz定时器的可视化管理功能实现,这样就能通过后台来动态地管理定时器啦！

相关表的导入
首先去Quartz官网下载相关Jar包，点击这里下载，当前最新版本为2.2.3，本示例也是基于2.2.3版本进行开发。

解压完成后，进入quartz-2.2.3-distribution\quartz-2.2.3\docs\dbTables目录下，因为用的是Mysql数据库，所以用编辑器(比如Notepad++)打开tables_mysql.sql文件。

#
# Quartz seems to work best with the driver mm.mysql-2.0.7-bin.jar
#
# PLEASE consider using mysql with innodb tables to avoid locking issues
#
# In your Quartz properties file, you'll need to set 
# org.quartz.jobStore.driverDelegateClass = org.quartz.impl.jdbcjobstore.StdJDBCDelegate
#

DROP TABLE IF EXISTS QRTZ_FIRED_TRIGGERS;
DROP TABLE IF EXISTS QRTZ_PAUSED_TRIGGER_GRPS;
DROP TABLE IF EXISTS QRTZ_SCHEDULER_STATE;
DROP TABLE IF EXISTS QRTZ_LOCKS;
DROP TABLE IF EXISTS QRTZ_SIMPLE_TRIGGERS;
DROP TABLE IF EXISTS QRTZ_SIMPROP_TRIGGERS;
DROP TABLE IF EXISTS QRTZ_CRON_TRIGGERS;
DROP TABLE IF EXISTS QRTZ_BLOB_TRIGGERS;
DROP TABLE IF EXISTS QRTZ_TRIGGERS;
DROP TABLE IF EXISTS QRTZ_JOB_DETAILS;
DROP TABLE IF EXISTS QRTZ_CALENDARS;


CREATE TABLE QRTZ_JOB_DETAILS
(
SCHED_NAME VARCHAR(120) NOT NULL,
JOB_NAME VARCHAR(200) NOT NULL,
JOB_GROUP VARCHAR(200) NOT NULL,
DESCRIPTION VARCHAR(250) NULL,
JOB_CLASS_NAME VARCHAR(250) NOT NULL,
IS_DURABLE VARCHAR(1) NOT NULL,
IS_NONCONCURRENT VARCHAR(1) NOT NULL,
IS_UPDATE_DATA VARCHAR(1) NOT NULL,
REQUESTS_RECOVERY VARCHAR(1) NOT NULL,
JOB_DATA BLOB NULL,
PRIMARY KEY (SCHED_NAME,JOB_NAME,JOB_GROUP)
);

CREATE TABLE QRTZ_TRIGGERS
(
SCHED_NAME VARCHAR(120) NOT NULL,
TRIGGER_NAME VARCHAR(200) NOT NULL,
TRIGGER_GROUP VARCHAR(200) NOT NULL,
JOB_NAME VARCHAR(200) NOT NULL,
JOB_GROUP VARCHAR(200) NOT NULL,
DESCRIPTION VARCHAR(250) NULL,
NEXT_FIRE_TIME BIGINT(13) NULL,
PREV_FIRE_TIME BIGINT(13) NULL,
PRIORITY INTEGER NULL,
TRIGGER_STATE VARCHAR(16) NOT NULL,
TRIGGER_TYPE VARCHAR(8) NOT NULL,
START_TIME BIGINT(13) NOT NULL,
END_TIME BIGINT(13) NULL,
CALENDAR_NAME VARCHAR(200) NULL,
MISFIRE_INSTR SMALLINT(2) NULL,
JOB_DATA BLOB NULL,
PRIMARY KEY (SCHED_NAME,TRIGGER_NAME,TRIGGER_GROUP),
FOREIGN KEY (SCHED_NAME,JOB_NAME,JOB_GROUP)
REFERENCES QRTZ_JOB_DETAILS(SCHED_NAME,JOB_NAME,JOB_GROUP)
);

CREATE TABLE QRTZ_SIMPLE_TRIGGERS
(
SCHED_NAME VARCHAR(120) NOT NULL,
TRIGGER_NAME VARCHAR(200) NOT NULL,
TRIGGER_GROUP VARCHAR(200) NOT NULL,
REPEAT_COUNT BIGINT(7) NOT NULL,
REPEAT_INTERVAL BIGINT(12) NOT NULL,
TIMES_TRIGGERED BIGINT(10) NOT NULL,
PRIMARY KEY (SCHED_NAME,TRIGGER_NAME,TRIGGER_GROUP),
FOREIGN KEY (SCHED_NAME,TRIGGER_NAME,TRIGGER_GROUP)
REFERENCES QRTZ_TRIGGERS(SCHED_NAME,TRIGGER_NAME,TRIGGER_GROUP)
);

CREATE TABLE QRTZ_CRON_TRIGGERS
(
SCHED_NAME VARCHAR(120) NOT NULL,
TRIGGER_NAME VARCHAR(200) NOT NULL,
TRIGGER_GROUP VARCHAR(200) NOT NULL,
CRON_EXPRESSION VARCHAR(200) NOT NULL,
TIME_ZONE_ID VARCHAR(80),
PRIMARY KEY (SCHED_NAME,TRIGGER_NAME,TRIGGER_GROUP),
FOREIGN KEY (SCHED_NAME,TRIGGER_NAME,TRIGGER_GROUP)
REFERENCES QRTZ_TRIGGERS(SCHED_NAME,TRIGGER_NAME,TRIGGER_GROUP)
);

CREATE TABLE QRTZ_SIMPROP_TRIGGERS
( 
SCHED_NAME VARCHAR(120) NOT NULL,
TRIGGER_NAME VARCHAR(200) NOT NULL,
TRIGGER_GROUP VARCHAR(200) NOT NULL,
STR_PROP_1 VARCHAR(512) NULL,
STR_PROP_2 VARCHAR(512) NULL,
STR_PROP_3 VARCHAR(512) NULL,
INT_PROP_1 INT NULL,
INT_PROP_2 INT NULL,
LONG_PROP_1 BIGINT NULL,
LONG_PROP_2 BIGINT NULL,
DEC_PROP_1 NUMERIC(13,4) NULL,
DEC_PROP_2 NUMERIC(13,4) NULL,
BOOL_PROP_1 VARCHAR(1) NULL,
BOOL_PROP_2 VARCHAR(1) NULL,
PRIMARY KEY (SCHED_NAME,TRIGGER_NAME,TRIGGER_GROUP),
FOREIGN KEY (SCHED_NAME,TRIGGER_NAME,TRIGGER_GROUP) 
REFERENCES QRTZ_TRIGGERS(SCHED_NAME,TRIGGER_NAME,TRIGGER_GROUP)
);

CREATE TABLE QRTZ_BLOB_TRIGGERS
(
SCHED_NAME VARCHAR(120) NOT NULL,
TRIGGER_NAME VARCHAR(200) NOT NULL,
TRIGGER_GROUP VARCHAR(200) NOT NULL,
BLOB_DATA BLOB NULL,
PRIMARY KEY (SCHED_NAME,TRIGGER_NAME,TRIGGER_GROUP),
FOREIGN KEY (SCHED_NAME,TRIGGER_NAME,TRIGGER_GROUP)
REFERENCES QRTZ_TRIGGERS(SCHED_NAME,TRIGGER_NAME,TRIGGER_GROUP)
);

CREATE TABLE QRTZ_CALENDARS
(
SCHED_NAME VARCHAR(120) NOT NULL,
CALENDAR_NAME VARCHAR(200) NOT NULL,
CALENDAR BLOB NOT NULL,
PRIMARY KEY (SCHED_NAME,CALENDAR_NAME)
);

CREATE TABLE QRTZ_PAUSED_TRIGGER_GRPS
(
SCHED_NAME VARCHAR(120) NOT NULL,
TRIGGER_GROUP VARCHAR(200) NOT NULL, 
PRIMARY KEY (SCHED_NAME,TRIGGER_GROUP)
);

CREATE TABLE QRTZ_FIRED_TRIGGERS
(
SCHED_NAME VARCHAR(120) NOT NULL,
ENTRY_ID VARCHAR(95) NOT NULL,
TRIGGER_NAME VARCHAR(200) NOT NULL,
TRIGGER_GROUP VARCHAR(200) NOT NULL,
INSTANCE_NAME VARCHAR(200) NOT NULL,
FIRED_TIME BIGINT(13) NOT NULL,
SCHED_TIME BIGINT(13) NOT NULL,
PRIORITY INTEGER NOT NULL,
STATE VARCHAR(16) NOT NULL,
JOB_NAME VARCHAR(200) NULL,
JOB_GROUP VARCHAR(200) NULL,
IS_NONCONCURRENT VARCHAR(1) NULL,
REQUESTS_RECOVERY VARCHAR(1) NULL,
PRIMARY KEY (SCHED_NAME,ENTRY_ID)
);

CREATE TABLE QRTZ_SCHEDULER_STATE
(
SCHED_NAME VARCHAR(120) NOT NULL,
INSTANCE_NAME VARCHAR(200) NOT NULL,
LAST_CHECKIN_TIME BIGINT(13) NOT NULL,
CHECKIN_INTERVAL BIGINT(13) NOT NULL,
PRIMARY KEY (SCHED_NAME,INSTANCE_NAME)
);

CREATE TABLE QRTZ_LOCKS
(
SCHED_NAME VARCHAR(120) NOT NULL,
LOCK_NAME VARCHAR(40) NOT NULL, 
PRIMARY KEY (SCHED_NAME,LOCK_NAME)
);

commit;

将上面的Sqly语句复制粘贴执行,成功之后数据库一共有11张表。
几个重要表的功能，简单说明如下(资料参考这里):

1、QRTZ_JOB_DETAILS：存储的是job的详细信息，包括：[DESCRIPTION]描述，[IS_DURABLE]是否持久化，[JOB_DATA]持久化对象等基本信息。

2、QRTZ_TRIGGERS：触发器信息,包含：job的名，组外键，[DESCRIPTION]触发器的描述等基本信息，还有[START_TIME]开始执行时间，[END_TIME]结束执行时间，[PREV_FIRE_TIME]上次执行时间，[NEXT_FIRE_TIME]下次执行时间，[TRIGGER_TYPE]触发器类型：simple和cron，[TRIGGER_STATE]执行状态：WAITING，PAUSED，ACQUIRED分别为：等待，暂停，运行中。

3、QRTZ_CRON_TRIGGERS：保存cron表达式。

4、QRTZ_SCHEDULER_STATE：存储集群中note实例信息，quartz会定时读取该表的信息判断集群中每个实例的当前状态，INSTANCE_NAME:之前配置文件中org.quartz.scheduler.instanceId配置的名字，就会写入该字段，如果设置为AUTO,quartz会根据物理机名和当前时间产生一个名字。[LAST_CHECKIN_TIME]上次检查时间，[CHECKIN_INTERVAL]检查间隔时间。

5、QRTZ_PAUSED_TRIGGER_GRPS：暂停的任务组信息。

6、QRTZ_LOCKS，悲观锁发生的记录信息。

7、QRTZ_FIRED_TRIGGERS，正在运行的触发器信息。

8、QRTZ_SIMPLE_TRIGGERS，简单的出发器详细信息。

9、QRTZ_BLOB_TRIGGERS,触发器存为二进制大对象类型(用于Quartz用户自己触发数据库定制自己的触发器，然而JobStore不明白怎么存放实例的时候)。

设置配置文件
首先定义名为 quartz.properties 的属性文件,内容如下

org.quartz.scheduler.instanceName= DefaultQuartzScheduler
org.quartz.scheduler.rmi.export= false
org.quartz.scheduler.rmi.proxy= false
org.quartz.scheduler.wrapJobExecutionInUserTransaction= false

#定义线程池的数量
org.quartz.threadPool.class=org.quartz.simpl.SimpleThreadPool
org.quartz.threadPool.threadCount=10
org.quartz.threadPool.threadPriority=5
org.quartz.threadPool.threadsInheritContextClassLoaderOfInitializingThread=true

org.quartz.jobStore.misfireThreshold=60000
#内存存储配置
#org.quartz.jobStore.class=org.quartz.simpl.RAMJobStore
#持久化配置
org.quartz.jobStore.class=org.quartz.impl.jdbcjobstore.JobStoreTX
org.quartz.jobStore.driverDelegateClass = org.quartz.impl.jdbcjobstore.StdJDBCDelegate

#数据库表前缀
org.quartz.jobStore.tablePrefix = QRTZ_
org.quartz.jobStore.dataSource = qzDS

#JDBC驱动
org.quartz.dataSource.qzDS.driver=com.mysql.jdbc.Driver

#数据库连接信息
org.quartz.dataSource.qzDS.URL = jdbc:mysql://localhost:3306/demo
org.quartz.dataSource.qzDS.user= root
org.quartz.dataSource.qzDS.password= root
org.quartz.dataSource.qzDS.maxConnections = 30

定义 applicationContext-quartz.xml 配置文件，
其中： classpath:config/quartz.properties指定quartz.properties的位置，
内容如下：

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="
http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-4.2.xsd"
default-lazy-init="false">
<description>Quartz Configuration</description>
<bean id="jobFactory" class="com.dgd.quartz.factory.JobFactory"></bean>
<bean id="quartzScheduler" lazy-init="false" autowire="no" class="org.springframework.scheduling.quartz.SchedulerFactoryBean">
<property name="configLocation" value="classpath:config/quartz.properties" />
<property name="jobFactory" ref="jobFactory"></property>
<property name="applicationContextSchedulerContextKey" value="applicationContextKey"></property>

</bean>
</beans>

id=”jobFactory” 的Java类定义如下：

package com.dgd.quartz.factory;

import org.quartz.spi.TriggerFiredBundle;
import org.springframework.beans.BeansException;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;
import org.springframework.scheduling.quartz.SpringBeanJobFactory;

/**
* @Author DGD
* @date 2017/10/17.
*/
public class JobFactory extends SpringBeanJobFactory implements ApplicationContextAware{
private ApplicationContext applicationContext;
@Override
protected Object createJobInstance(TriggerFiredBundle bundle) throws Exception {
Object jobInstance = super.createJobInstance(bundle);
applicationContext.getAutowireCapableBeanFactory().autowireBean(jobInstance);
return jobInstance;
}

@Override
public void setApplicationContext(ApplicationContext context) throws BeansException {
this.applicationContext = context;
}
}

至于JobFactory 类的作用，就是为了让自定义的Job能够自动注入Spring容器托管的对象，具体细节可参考Quartz与Spring集成 Job如何自动注入Spring容器托管的对象。

在 applicationContext.xml 引入配置文件：

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:aop="http://www.springframework.org/schema/aop"
xmlns:context="http://www.springframework.org/schema/context"
xsi:schemaLocation="
http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-4.2.xsd
http://www.springframework.org/schema/aop
http://www.springframework.org/schema/aop/spring-aop-4.2.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-4.2.xsd"
default-autowire="byType">

<!--启动spring MVC 注解-->
<context:annotation-config/>
<context:component-scan base-package="com.dgd"/>

<!--引入quartz.properties配置文件-->
<context:property-placeholder location="classpath:config/quartz.properties" 
ignore-unresolvable="true"/>

<aop:aspectj-autoproxy proxy-target-class="true"/>
</beans>

在web.xml中配置 applicationContext-quartz.xml，如下：

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd"
version="3.1">

<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>
classpath:spring/applicationContext.xml,
classpath:spring/applicationContext-quartz.xml
</param-value>
</context-param>

<welcome-file-list>
<welcome-file>index.jsp</welcome-file>
</welcome-file-list>
</web-app>

配置文件已经搞定，接下来讲讲创建定时任务和删除定时任务的核心方法。

首先定义一个管理定时任务的表，SQL语句如下：

CREATE TABLE `t_timer_manage` (
`timer_id` int(10) NOT NULL AUTO_INCREMENT COMMENT '定时任务ID',
`timer_job_name` varchar(60) NOT NULL COMMENT '定时器名称',
`timer_trigger_name` varchar(60) NOT NULL COMMENT '触发器名称',
`timer_cron_expression` varchar(60) NOT NULL COMMENT 'cron表达式',
`timer_target_object` varchar(100) NOT NULL COMMENT '目标类名(全路径)',
`timer_method_name` varchar(60) DEFAULT NULL COMMENT '类名对应的方法名',
`timer_start_time` datetime NOT NULL COMMENT '开始执行时间',
`timer_end_time` datetime NOT NULL COMMENT '结束执行时间',
`timer_status` int(2) NOT NULL COMMENT '定时器运行状态（1、运行中 ，2、待运行，3、运行失败，4、失效）',
`timer_description` varchar(200) NOT NULL COMMENT '定时器详细描述',
`create_user_id` int(10) NOT NULL COMMENT '创建人',
`create_time` datetime NOT NULL COMMENT '创建时间',
`modify_user_id` int(10) NOT NULL COMMENT '修改人',
`modify_time` datetime NOT NULL COMMENT '修改时间',
`extend1` varchar(200) DEFAULT NULL COMMENT '备用字段',
`extend2` varchar(200) DEFAULT NULL COMMENT '备用字段',
`extend3` varchar(200) DEFAULT NULL COMMENT '备用字段',
`extend4` varchar(200) DEFAULT NULL COMMENT '备用字段',
`extend5` varchar(200) DEFAULT NULL COMMENT '备用字段',
PRIMARY KEY (`timer_id`)
) ENGINE=InnoDB AUTO_INCREMENT=1 DEFAULT CHARSET=utf8mb4 COMMENT='定时器管理表';

生成该表的POJO类，比如命名为：TTimerManage，定义如下（setter方法和getter方法已省略）：

package com.dgd.entity;

import java.io.Serializable;
import java.util.Date;

public class TTimerManage implements Serializable {
private Integer timerId;

private String timerJobName;

private String timerTriggerName;

private String timerCronExpression;

private String timerTargetObject;

private String timerMethodName;

private Date timerStartTime;

private Date timerEndTime;

private Integer timerStatus;

private String timerDescription;

private Integer createUserId;

private Date createTime;

private Integer modifyUserId;

private Date modifyTime;

private String extend1;

private String extend2;

private String extend3;

private String extend4;

private String extend5;

private static final long serialVersionUID = 1L;

(setter方法和getter方法已省略)...
}

定义一个定时器管理接口：

package com.dgd.service;

import com.dgd.common.exception.TaskException;
import com.dgd.entity.TTimerManage;

import java.io.Serializable;
import java.util.List;

/**
* @Author DGD
* @date 2017/10/17.
*/
public interface QuartzManagerService extends Serializable{

/**
* 创建定时任务并执行
* @param timerManage
* @return
*/
boolean createTimerTask(TTimerManage timerManage) throws TaskException;

/**
* 停止执行定时任务
* @param timerManage
* @return
*/
boolean removeTimerTask(TTimerManage timerManage) throws TaskException;
}

TaskException为自定义异常，定义如下：

package com.dgd.common.exception;

/**
* @Author DGD
* @date 2017/10/17.
*/
public class TaskException extends RuntimeException{

private int code=-1;
private Object data;
public TaskException(String msg){
super(msg);
}

public Object getData() {
return data;
}

public void setData(Object data) {
this.data = data;
}

public TaskException(String msg, int code){
super(msg);
}

public int getCode() {
return code;
}

public void setCode(int code) {
this.code = code;
}
}

接下来实现QuartzManagerService 接口，如下：

package com.dgd.service;

import com.dgd.common.exception.TaskException;
import com.dgd.entity.TTimerManage;
import com.dgd.entity.TTimerManageExample;
import com.dgd.persistence.dao.TTimerManageMapper;
import org.quartz.*;
import com.dgd.quartz.listener.TaskJobListener;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import javax.annotation.Resource;
import java.util.Date;
import java.util.List;
import java.util.concurrent.atomic.AtomicBoolean;

/**
* @Author DGD
* @date 2017/10/17.
*/
@Service
public class QuartzManagerServiceImpl implements QuartzManagerService {
private Logger log = LoggerFactory.getLogger(QuartzManagerServiceImpl.class);

@Resource(name = "quartzScheduler")
private Scheduler scheduler;
//示例代码采用的ORM框架为Mybatis
@Autowired
private TTimerManageMapper timerManageMapper;

@Override
public boolean createTimerTask(TTimerManage timerManage) throws TaskException {
if (timerManage == null) {
throw new TaskException("定时任务不能为空");
}
AtomicBoolean result = new AtomicBoolean(false);
try {
Trigger trigger = scheduler.getTrigger(new TriggerKey(timerManage.getTimerTriggerName(),timerManage.getTimerTriggerName()));
if (trigger != null) {
//已存在触发器,即计划任务已存在
if (scheduler.checkExists(trigger.getJobKey())
&& scheduler.checkExists(trigger.getKey())) {
//修改任务状态:Constants.TimerStatus.运行中=1
timerManage.setTimerStatus(1);
timerManage.setModifyTime(new Date());
timerManageMapper.updateByPrimaryKey(timerManage);
//记录日志略
result.set(true);
}

}else{
// 1、创建一个JobDetail实例
JobDetail jobDetail = null;

Object object = Class.forName(timerManage.getTimerTargetObject()).newInstance();
if (object instanceof Job) {
Job job = (Job) object;
jobDetail = JobBuilder.newJob(job.getClass())
//任务执行类
.withIdentity(timerManage.getTimerJobName(),timerManage.getTimerJobName())
//任务名，任务组
.build();
}
if (jobDetail != null) {
//设置表达式
CronScheduleBuilder builder = CronScheduleBuilder.cronSchedule(timerManage.getTimerCronExpression());
//创建Trigger
trigger = TriggerBuilder.newTrigger()
//触发器名,触发器组名
.withIdentity(timerManage.getTimerTriggerName(),timerManage.getTimerTriggerName())
.startNow()
.withSchedule(builder)
.build();
//将该任务添加到监听器中
scheduler.getListenerManager().addJobListener(new TaskJobListener(), KeyMatcher.keyEquals(jobDetail.getKey()));
//调度执行
scheduler.scheduleJob(jobDetail, trigger);
scheduler.start();

//改变任务状态
if (scheduler.checkExists(jobDetail.getKey()) && scheduler.checkExists(trigger.getKey())) {
//修改任务状态:Constants.TimerStatus.运行中=1
timerManage.setTimerStatus(1); //进行中
timerManage.setModifyTime(new Date());
timerManageMapper.updateByPrimaryKey(timerManage);
//记录日志略

result.set(true);
}
}

}
} catch (Exception e) {
timerManage.setTimerStatus(3); //运行失败
timerManage.setModifyTime(new Date());
timerManage.setModifyUserId(-1);
timerManageMapper.updateByPrimaryKey(timerManage);
//记录日志

}
return result.get();
}

@Override
public boolean removeTimerTask(TTimerManage timerManage) throws TaskException {
if (timerManage == null) {
throw new TaskException("定时任务不能为空");
}
AtomicBoolean result = new AtomicBoolean(false);
try {
Trigger trigger = scheduler.getTrigger(
new TriggerKey(timerManage.getTimerTriggerName(),timerManage.getTimerTriggerName()));
if (trigger != null) {
//定时任务在执行
if (scheduler.checkExists(trigger.getKey()) 
&& scheduler.checkExists(trigger.getJobKey())) {

//如果定时任务状态已失效,则移除,Constants.TimerStatus.失效=4
if(scheduler.deleteJob(trigger.getJobKey())){
if(timerManage.getTimerStatus().intValue() != Constants.TimerStatus.失效){
timerManage.setTimerStatus(Constants.TimerStatus.失效);
timerManage.setModifyTime(new Date());
timerManageMapper.updateByPrimaryKey(timerManage);
}
//记录日志略
}else{
log.info("定时任务:"+timerManage.getTimerJobName()+"停止执行失败");
}
}else{
if(timerManage.getTimerStatus().intValue() != Constants.TimerStatus.失效){
timerManage.setTimerStatus(Constants.TimerStatus.失效);
timerManage.setModifyTime(new Date());
timerManageMapper.updateByPrimaryKey(timerManage);
}
//记录日志略
}
}else{
if(timerManage.getTimerStatus().intValue() != Constants.TimerStatus.失效){
timerManage.setTimerStatus(Constants.TimerStatus.失效);
timerManage.setModifyTime(new Date());
timerManageMapper.updateByPrimaryKey(timerManage);
}
//记录日志略
}
} catch (Exception e) {
log.info("定时任务:"+timerManage.getTimerJobName()
+",执行停止运行操作出现异常,异常信息:"+e.getMessage());
}
return result.get();
}
}

上面的代码中，TaskJobListener 为自定义的监听器类，用来判断执行的定时任务执行时间是否有效，如果无效则将其剔除，定义如下：

package com.dgd.quartz.listener;

import com.dgd.common.SpringContextHolder;
import com.dgd.entity.TTimerManage;
import com.dgd.entity.TTimerManageExample;
import com.dgd.persistence.dao.TTimerManageMapper;
import org.quartz.*;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import java.util.Calendar;
import java.util.Date;
import java.util.List;

/**
* @Author DGD
* @date 2017/10/18.
*/
public class TaskJobListener implements JobListener{
private static final String NAME = "TaskJobListener";
private static final Logger log = LoggerFactory.getLogger(TaskJobListener.class);
@Override
public String getName() {
return NAME;
}
//定时任务执行之前需要做的事
@Override
public void jobToBeExecuted(JobExecutionContext jobExecutionContext) {

Scheduler scheduler = jobExecutionContext.getScheduler();

//获取Spring容器托管的Bean
TTimerManageMapper timerManageMapper = SpringContextHolder.getBean(TTimerManageMapper.class);

//拿到定时任务名字和触发器名字
JobKey jobKey = jobExecutionContext.getJobDetail().getKey();
TriggerKey triggerKey = jobExecutionContext.getTrigger().getKey();
String jobName = jobKey.getName();
String triggerName = triggerKey.getName();

log.info("检查定时任务执行时间是否有效,当前的定时任务为:"+jobName);
//根据名字去查询定时任务记录
TTimerManageExample example = new TTimerManageExample();
example.createCriteria().andTimerJobNameEqualTo(jobName).andTimerTriggerNameEqualTo(triggerName);
List<TTimerManage> list = timerManageMapper.selectByExample(example);
if (list != null && list.size() > 0) {
for (TTimerManage timerManage : list) {
if (timerManage != null) {
//判断定时任务执行时间是否有效,无效则将任务移除
if (Calendar.getInstance().getTime().compareTo(timerManage.getTimerEndTime())>0
|| Calendar.getInstance().getTime().compareTo(timerManage.getTimerStartTime())<0) {
try {
if (scheduler.checkExists(jobKey) && scheduler.checkExists(triggerKey)) {
//成功移除任务
if (scheduler.deleteJob(jobKey)) {
//修改定时任务状态
timerManage.setTimerStatus(4);
timerManage.setModifyTime(new Date());
timerManage.setModifyUserId(-1);
timerManageMapper.updateByPrimaryKey(timerManage);
//记录日志略
}
}
} catch (Exception e) {
log.error("检查定时任务执行时间是否有效过程出现异常,异常信息="+ e.getMessage());
}

}
}
}
}
}

@Override
public void jobExecutionVetoed(JobExecutionContext jobExecutionContext) {

}

@Override
public void jobWasExecuted(JobExecutionContext jobExecutionContext, JobExecutionException e) {

}
}

工具类SpringContextHolder定义如下：

package com.dgd.common;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.DisposableBean;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;

/**
* @Author DGD
* @date 2017/10/18.
*/
public class SpringContextHolder implements ApplicationContextAware, DisposableBean {

private static ApplicationContext applicationContext = null;

private static Logger logger = LoggerFactory.getLogger(SpringContextHolder.class);

/**
* 取得存储在静态变量中的ApplicationContext.
*/
public static ApplicationContext getApplicationContext() {
assertContextInjected();
return applicationContext;
}

/**
* 从静态变量applicationContext中取得Bean, 自动转型为所赋值对象的类型.
*/
public static <T> T getBean(String name) {
assertContextInjected();
return (T) applicationContext.getBean(name);
}

/**
* 从静态变量applicationContext中取得Bean, 自动转型为所赋值对象的类型.
*/
public static <T> T getBean(Class<T> requiredType) {
assertContextInjected();
return applicationContext.getBean(requiredType);
}

/**
* 清除SpringContextHolder中的ApplicationContext为Null.
*/
public static void clearHolder() {
if (logger.isDebugEnabled()){
logger.debug("clear ApplicationContext:" + applicationContext);
}
applicationContext = null;
}
/**
* 实现ApplicationContextAware接口, 注入Context到静态变量中.
*/
@Override
public void setApplicationContext(ApplicationContext applicationContext) {
SpringContextHolder.applicationContext = applicationContext;
}

/**
* 实现DisposableBean接口, 在Context关闭时清理静态变量.
*/
@Override
public void destroy() throws Exception {
SpringContextHolder.clearHolder();
}

/**
* 检查ApplicationContext不为空.
*/
private static void assertContextInjected() {
if (applicationContext == null) {
throw new IllegalStateException("applicaitonContext is not be injected,please config SpringContextHolder in applicationContext.xml");
}
}
}

记得要在 applicationContext.xml 注册：

<bean class="com.dgd.common.SpringContextHolder"/>

测试任务类如下：

package com.dgd.quartz.job;

import org.quartz.Job;
import org.quartz.JobExecutionContext;
import org.quartz.JobExecutionException;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import java.text.SimpleDateFormat;
import java.util.Date;

/**
* @Author DGD
* @date 2017/10/17.
*/
public class HelloWorldJob implements Job {
Logger log = LoggerFactory.getLogger(HelloWorldJob.class);
@Override
public void execute(JobExecutionContext jobExecutionContext) throws JobExecutionException {
+new SimpleDateFormat("yyyy-MM-dd HH:mm:ss").format(new Date())+"-------------------");
log.info("--------------- Hello World! ---------------");
try {
Thread.currentThread().sleep(5000);
} catch (InterruptedException e) {
e.printStackTrace();
}
log.info("---------------结束执行HelloWorldJOb测试任务:"
+new SimpleDateFormat("yyyy-MM-dd HH:mm:ss").format(new Date())+"-------------------");
}
}

数据库执行以下语句：

INSERT INTO `t_timer_manage` (
`timer_job_name`,
`timer_trigger_name`,
`timer_cron_expression`,
`timer_target_object`,
`timer_method_name`,
`timer_start_time`,
`timer_end_time`,
`timer_status`,
`timer_description`,
`create_user_id`,
`create_time`,
`modify_user_id`,
`modify_time`,
`extend1`,
`extend2`,
`extend3`,
`extend4`,
`extend5`
)
VALUES
(
'HelloWorldJob',
'HelloWorldTrigger',
'0/10 * * * * ?',
'com.dgd.quartz.job.HelloWorldJob',
NULL,
'2017-08-02 10:23:00',
'2017-10-21 11:43:03',
'2',
'测试定时器',
-1,
NOW(),
-1,
NOW(),
NULL,
NULL,
NULL,
NULL,
NULL
);
INSERT INTO `t_timer_manage` (
`timer_job_name`,
`timer_trigger_name`,
`timer_cron_expression`,
`timer_target_object`,
`timer_method_name`,
`timer_start_time`,
`timer_end_time`,
`timer_status`,
`timer_description`,
`create_user_id`,
`create_time`,
`modify_user_id`,
`modify_time`,
`extend1`,
`extend2`,
`extend3`,
`extend4`,
`extend5`
)
VALUES
(
'HelloWorldJob',
'HelloWorldTrigger',
'0/10 * * * * ?',
'com.dgd.quartz.job.HelloWorldJob',
NULL,
'2017-08-02 10:23:00',
'2017-10-21 11:43:03',
'2',
'测试定时器',
-1,
NOW(),
-1,
NOW(),
NULL,
NULL,
NULL,
NULL,
NULL
);

现在，只要在Controller层添加相关调用接口的代码，（后台的增删改查代码和页面默认已有），即完成对定时任务的可视化管理。
---------------------
作者：书隐辞
来源：CSDN
原文：https://blog.csdn.net/u012075383/article/details/78270941
版权声明：本文为博主原创文章，转载请附上博文链接！

posted @ 2018-11-12 11:27 十月围城小童鞋阅读(2051) 评论(0) 编辑收藏举报

会员力量，点亮园子希望

刷新页面返回顶部

十月围城小童鞋

Quartz定时器可视化管理功能的简单实现

公告