scheduler定时调度系统是大多行业项目都需要的，传统的spring-job模式，个人感觉已经out了，因为存在很多的问题，特别是定时调度的追加、修改、删除等，需要修改xml，xml的配置生效无非是热部署灰度发布方案或者直接停止、重启服务器，完全不能做到自动启动、修复方式。
提醒：可以对应用进行集群部署，在对定时调度配置时可以使用集群方式或者单边配置应用方式，今天讲解的是使用spring4+scheduler实现定时调度，闲话少说，直接把步骤记录下来：
- 在项目的pom.xml文件中引入quartz的jar包，如下：
<!-- quartz定时调度 -->
<dependency>
<groupId>org.quartz-scheduler</groupId>
<artifactId>quartz</artifactId>
<version>1.8.5</version>
<dependency>
- 定义quartz的配置文件spring-context-quartz.xml：
<?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:context="http://www.springframework.org/schema/context" xsi:schemaLocation="
http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.0.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd"
default-lazy-init="false">
<!-- 调度器 -->
<bean name="scheduler" class="org.springframework.scheduling.quartz.SchedulerFactoryBean">
<!-- 通过applicationContextSchedulerContextKey属性配置spring上下文 -->
<property name="applicationContextSchedulerContextKey" value="applicationContext" />
</bean>
<!--加载数据库任务-->
<bean id="jobService" class="top.alterem.job.service.JobService" init-method="loadJob" />
</beans>
xml
3. 在项目的web.xml文件中引入spring-context-quartz.xml配置文件
```xml
classpath*:spring-context-quartz.xml
- 定义job实体对象
public class Job{
private static final long serialVersionUID = 1L;
/**
* 任务执行周期cron表达式
*/
public static int EXECYCLE_CRON = 2;
/**
* 任务执行周期自定义
*/
public static int EXECYCLE_DEFINE = 1;
/**
* 执行周期-分钟
*/
public static int EXECYCLE_MINUTE = 1;
/**
* 执行周期-小时
*/
public static int EXECYCLE_HOUR = 2;
/**
* 执行周期-日
*/
public static int EXECYCLE_DAY = 3;
/**
* 执行周期-月
*/
public static int EXECYCLE_WEEK = 4;
/**
* 执行周期-月
*/
public static int EXECYCLE_MONTH = 5;
private String jobType; // 任务类型(1首页静态化、2栏目页静态化、3内容页静态化、4采集、5分发)
private String jobName; // 任务名称
private String jobClass; // 任务类
private String execycle; // 执行周期分类(1非表达式 2 cron表达式)
private String dayOfMonth; // 每月的哪天
private String dayOfWeek; // 周几
private String hour; // 小时
private String minute; // 分钟
private String intervalHour; // 间隔小时
private String intervalMinute; // 间隔分钟
private String jobIntervalUnit; // 1分钟、2小时、3日、4周、5月
private String cronExpression; // 规则表达式
private String isEnable; // 是否启用
public Job() {
super();
}
public Job(String id){
super(id);
}
@Length(min=1, max=1, message="任务类型(1首页静态化、2栏目页静态化、3内容页静态化、4采集、5分发)长度必须介于 1 和 1 之间")
public String getJobType() {
return jobType;
}
public void setJobType(String jobType) {
this.jobType = jobType;
}
@Length(min=1, max=255, message="任务名称长度必须介于 1 和 255 之间")
public String getJobName() {
return jobName;
}
public void setJobName(String jobName) {
this.jobName = jobName;
}
@Length(min=1, max=255, message="任务类长度必须介于 1 和 255 之间")
public String getJobClass() {
return jobClass;
}
public void setJobClass(String jobClass) {
this.jobClass = jobClass;
}
@Length(min=1, max=1, message="执行周期分类(1非表达式 2 cron表达式)长度必须介于 1 和 1 之间")
public String getExecycle() {
return execycle;
}
public void setExecycle(String execycle) {
this.execycle = execycle;
}
@Length(min=0, max=11, message="每月的哪天长度必须介于 0 和 11 之间")
public String getDayOfMonth() {
return dayOfMonth;
}
public void setDayOfMonth(String dayOfMonth) {
this.dayOfMonth = dayOfMonth;
}
@Length(min=0, max=1, message="周几长度必须介于 0 和 1 之间")
public String getDayOfWeek() {
return dayOfWeek;
}
public void setDayOfWeek(String dayOfWeek) {
this.dayOfWeek = dayOfWeek;
}
@Length(min=0, max=11, message="小时长度必须介于 0 和 11 之间")
public String getHour() {
return hour;
}
public void setHour(String hour) {
this.hour = hour;
}
@Length(min=0, max=11, message="分钟长度必须介于 0 和 11 之间")
public String getMinute() {
return minute;
}
public void setMinute(String minute) {
this.minute = minute;
}
@Length(min=0, max=11, message="间隔小时长度必须介于 0 和 11 之间")
public String getIntervalHour() {
return intervalHour;
}
public void setIntervalHour(String intervalHour) {
this.intervalHour = intervalHour;
}
@Length(min=0, max=11, message="间隔分钟长度必须介于 0 和 11 之间")
public String getIntervalMinute() {
return intervalMinute;
}
public void setIntervalMinute(String intervalMinute) {
this.intervalMinute = intervalMinute;
}
@Length(min=0, max=1, message="1分钟、2小时、3日、4周、5月长度必须介于 0 和 1 之间")
public String getJobIntervalUnit() {
return jobIntervalUnit;
}
public void setJobIntervalUnit(String jobIntervalUnit) {
this.jobIntervalUnit = jobIntervalUnit;
}
@Length(min=0, max=255, message="规则表达式长度必须介于 0 和 255 之间")
public String getCronExpression() {
return cronExpression;
}
public void setCronExpression(String cronExpression) {
this.cronExpression = cronExpression;
}
@Length(min=1, max=1, message="是否启用长度必须介于 1 和 1 之间")
public String getIsEnable() {
return isEnable;
}
public void setIsEnable(String isEnable) {
this.isEnable = isEnable;
}
}
- 编写quartz的jobServvice类：
package top.alterem.job.service;
import java.text.ParseException;
import java.util.List;
import java.util.UUID;
import org.quartz.CronTrigger;
import org.quartz.JobDetail;
import org.quartz.Scheduler;
import org.quartz.SchedulerException;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import top.alterem.StringUtils;
import top.alterem.common.persistence.Page;
import top.alterem.common.service.CrudService;
import top.alterem.job.dao.JobDao;
import top.alterem.job.entity.Job;
/**
* 定时调度任务Service
*
* @author honghu
*/
@Service
@Transactional(readOnly = true)
public class JobService extends CrudService<JobDao, Job> {
@Autowired
private JobDao jobDao;
private Logger logger = LoggerFactory.getLogger(getClass());
public Job get(String id) {
return super.get(id);
}
public List<Job> findList(Job job) {
return super.findList(job);
}
public Page<Job> findPage(Page<Job> page, Job job) {
return super.findPage(page, job);
}
@Transactional(readOnly = false)
public void save(Job job) {
super.save(job);
// 启用则启动任务
if (StringUtils.equals("1", job.getIsEnable())) {
startTask(job, job.getId());
}
}
@Transactional(readOnly = false)
public void update(Job job) {
//结束定时调度
endTask(job.getId());
job.preUpdate();
jobDao.update(job);
// 启用则启动任务
if (StringUtils.equals("1", job.getIsEnable())) {
startTask(job, job.getId());
}
}
@Transactional(readOnly = false)
public void delete(Job job) {
//结束任务
endTask(job.getId());
super.delete(job);
}
/**
* 系统初始加载任务
*/
public void loadJob() throws Exception {
List<Job> jobList = this.findList(new Job());
if ( != jobList && jobList.size() > 0) {
for (int i = 0; i < jobList.size(); i++) {
Job job = jobList.get(i);
// 任务开启状态 执行任务调度
if (StringUtils.equals("1", job.getIsEnable())) {
try {
JobDetail jobDetail = new JobDetail();
// 设置任务名称
if (StringUtils.isNotBlank(job.getId())) {
jobDetail.setName(job.getId());
} else {
UUID uuid = UUID.randomUUID();
jobDetail.setName(uuid.toString());
job.setId(uuid.toString());
}
jobDetail.setGroup(Scheduler.DEFAULT_GROUP);
// 设置任务执行类
jobDetail.setJobClass(getClassByTask(job.getJobClass()));
// 添加任务参数
CronTrigger cronTrigger = new CronTrigger("cron_" + i, Scheduler.DEFAULT_GROUP,
jobDetail.getName(), Scheduler.DEFAULT_GROUP);
cronTrigger.setCronExpression(getCronExpressionFromDB(job.getId()));
// 调度任务
scheduler.scheduleJob(jobDetail, cronTrigger);
} catch (SchedulerException e) {
logger.error("JobService SchedulerException", e);
} catch (ClassNotFoundException e) {
logger.error("JobService ClassNotFoundException", e);
} catch (Exception e) {
logger.error("JobService Exception", e);
}
}
}
}
}
/**
*
* @param taskClassName
* 任务执行类名
* @return
* @throws ClassNotFoundException
*/
@SuppressWarnings("rawtypes")
private Class getClassByTask(String taskClassName) throws ClassNotFoundException {
return Class.forName(taskClassName);
}
public String getCronExpressionFromDB(String id) throws Exception {
// 设置任务规则
Job job = this.get(id);
if ( != job) {
if (Job.EXECYCLE_CRON == Integer.parseInt(job.getExecycle())) {
return job.getCronExpression();
} else {
Integer execycle = Integer.parseInt(job.getJobIntervalUnit());
String excep = "";
if (execycle.equals(Job.EXECYCLE_MONTH)) {
excep = "0 " + job.getMinute() + " " + job.getHour() + " " + job.getDayOfMonth() + " * ?";
} else if (execycle.equals(Job.EXECYCLE_WEEK)) {
excep = "0 " + job.getMinute() + " " + job.getHour() + " " + " ? " + " * " + job.getDayOfWeek();
} else if (execycle.equals(Job.EXECYCLE_DAY)) {
excep = "0 " + job.getMinute() + " " + job.getHour() + " " + " * * ?";
} else if (execycle.equals(Job.EXECYCLE_HOUR)) {
excep = "0 0 */" + job.getIntervalHour() + " * * ?";
} else if (execycle.equals(Job.EXECYCLE_MINUTE)) {
excep = "0 */" + job.getIntervalMinute() + " * * * ?";
}
return excep;
}
}
return "";
}
private void startTask(Job job, String id) {
try {
String cronExpress = getCronExpressionFromDB(id);
if (StringUtils.isNotEmpty(cronExpress) && cronExpress.indexOf("null") == -1) {
JobDetail jobDetail = new JobDetail();
jobDetail.setName(id);
jobDetail.setGroup(Scheduler.DEFAULT_GROUP);
jobDetail.setJobClass(getClassByTask(job.getJobClass()));
CronTrigger cronTrigger = new CronTrigger("cron_" + id, Scheduler.DEFAULT_GROUP, jobDetail.getName(),
Scheduler.DEFAULT_GROUP);
cronTrigger.setCronExpression(cronExpress);
scheduler.scheduleJob(jobDetail, cronTrigger);
}
} catch (ParseException e) {
logger.error("JobService ParseException", e);
} catch (Exception e) {
logger.error("JobService Exception", e);
}
}
private void endTask(String id) {
try {
scheduler.deleteJob(id, Scheduler.DEFAULT_GROUP);
} catch (SchedulerException e) {
logger.error("JobService endTask", e);
}
}
@Autowired
private Scheduler scheduler;
}
- 编写相关job的Controller、dao、dao.xml我这边就不写了，其实就是对数据的增删改查操作
- 启动项目验证quartz是否成功：
项目启动个控制台：
任务列表：
任务添加和修改界面：
到此完毕！
