前言
本文是对之前的一篇文章Spring+SpringMVC+mybatis+Quartz整合代码部分做的一个修改和补充， 其中最大的变化就是后台框架变成了Spring Boot。
本工程所用到的技术或工具有：
- Spring Boot
- Mybatis
- Quartz
- PageHelper
- VueJS
- ElementUI
- MySql数据库
正文
配置
本例中仍然是使用mysql数据库作为Quartz任务持久化的存储载体。对于如何在Mysql数据库中建立表，在上一篇Spring+SpringMVC+mybatis+Quartz整合中已经有了详细的介绍。这里我们来看Spring Boot工程的建立方法。在Spring网站上有关于建立Spring Boot工程的脚手架，我们按如下图的方式设置，然后点击Generate Project即可。
接着我们在IDE中导入这个maven工程，然后可以看到src/main/resource下面有一个名字为application.properties的文件，里面的内容是空的。我们删除这个文件，然后在这个目录下新建一个名为application.yml的文件。这是配置Spring Boot工程的另一种方式，也是Spring Boot官方推荐的一种配置方式。我们在新建的这个yml文件中，加入如下代码
spring: datasource: url: jdbc:mysql://190.0.1.88:3306/hello_test?useUnicode=true username: root password: root driver-class-name: com.mysql.jdbc.Drivermybatis: mapper-locations: - classpath:com/example/demo/mapper
上面的代码是对数据库和mybatis的一些配置。
接着我们在当前目录下再新建一个名为quartz.properties的文件。这是对Quartz的配置文件。加入如下代码：
# 固定前缀org.quartz# 主要分为scheduler、threadPool、jobStore、plugin等部分##org.quartz.scheduler.instanceName = DefaultQuartzSchedulerorg.quartz.scheduler.rmi.export = falseorg.quartz.scheduler.rmi.proxy = falseorg.quartz.scheduler.wrapJobExecutionInUserTransaction = false# 实例化ThreadPool时，使用的线程类为SimpleThreadPoolorg.quartz.threadPool.class = org.quartz.simpl.SimpleThreadPool# threadCount和threadPriority将以setter的形式注入ThreadPool实例# 并发个数org.quartz.threadPool.threadCount = 5# 优先级org.quartz.threadPool.threadPriority = 5org.quartz.threadPool.threadsInheritContextClassLoaderOfInitializingThread = trueorg.quartz.jobStore.misfireThreshold = 5000# 默认存储在内存中#org.quartz.jobStore.class = org.quartz.simpl.RAMJobStore#持久化org.quartz.jobStore.class = org.quartz.impl.jdbcjobstore.JobStoreTXorg.quartz.jobStore.tablePrefix = QRTZ_org.quartz.jobStore.dataSource = qzDSorg.quartz.dataSource.qzDS.driver = com.mysql.jdbc.Driverorg.quartz.dataSource.qzDS.URL = jdbc:mysql://190.0.1.88:3306/hello_test?useUnicode=true&characterEncoding=UTF-8org.quartz.dataSource.qzDS.user = rootorg.quartz.dataSource.qzDS.password = rootorg.quartz.dataSource.qzDS.maxConnections = 10
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可以看出和上一篇文章的配置文件完成相同。接着我们在com.example.demo下新建一个名为SchedulerConfig.java的文件。在这个文件里，对刚才我们新建的quartz.properties文件进行读取。
package com.example.demo;import java.io.IOException;import java.util.Properties;import javax.sql.DataSource;import org.quartz.ee.servlet.QuartzInitializerListener;import org.springframework.beans.factory.config.PropertiesFactoryBean;import org.springframework.context.annotation.Bean;import org.springframework.context.annotation.Configuration;import org.springframework.core.io.ClassPathResource;import org.springframework.scheduling.quartz.SchedulerFactoryBean;@Configurationpublic class SchedulerConfig { @Bean public SchedulerFactoryBean schedulerFactoryBean(DataSource dataSource) throws IOException { SchedulerFactoryBean factory = new SchedulerFactoryBean(); factory.setQuartzProperties(quartzProperties()); return factory; } @Bean public Properties quartzProperties() throws IOException { PropertiesFactoryBean propertiesFactoryBean = new PropertiesFactoryBean(); propertiesFactoryBean.setLocation(new ClassPathResource("/quartz.properties")); return propertiesFactoryBean.getObject(); } @Bean public QuartzInitializerListener executorListener() { return new QuartzInitializerListener(); }}
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注意最下方的QuartzInitializerListener。在SpringMVC中，我们在配置Quartz的时候，要在web.xml中加入如下配置：
<listener> <listener-class> org.quartz.ee.servlet.QuartzInitializerListener </listener-class> </listener>
这个监听器可以监听到工程的启动，在工程停止再启动时可以让已有的定时任务继续进行。由于我们目前的工程是Spring Boot，没有web.xml的配置方式，所以我们在上文的SchedulerConfig类中直接注入了这个Bean。
实现
先来看Job类。首先设置一个BaseJob接口，用来继承Job类：
package com.example.demo.job;import org.quartz.Job;import org.quartz.JobExecutionContext;import org.quartz.JobExecutionException;public interface BaseJob extends Job{ public void execute(JobExecutionContext context) throws JobExecutionException;}
然后两个Job类用来实现BaseJob类：
HelloJob
package com.example.demo.job;import java.util.Date; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import org.quartz.JobExecutionContext; import org.quartz.JobExecutionException; public class HelloJob implements BaseJob { private static Logger _log = LoggerFactory.getLogger(HelloJob.class); public HelloJob() { } public void execute(JobExecutionContext context) throws JobExecutionException { _log.error("Hello Job执行时间: " + new Date()); } }
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NewJob
package com.example.demo.job;import java.util.Date; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import org.quartz.JobExecutionContext; import org.quartz.JobExecutionException; public class NewJob implements BaseJob { private static Logger _log = LoggerFactory.getLogger(NewJob.class); public NewJob() { } public void execute(JobExecutionContext context) throws JobExecutionException { _log.error("New Job执行时间: " + new Date()); } }
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至于这样做的目的，我们可以先看一下Controller
package com.example.demo.controller;import java.util.HashMap;import java.util.Map;import org.quartz.CronScheduleBuilder;import org.quartz.CronTrigger;import org.quartz.JobBuilder;import org.quartz.JobDetail;import org.quartz.JobKey;import org.quartz.Scheduler;import org.quartz.SchedulerException;import org.quartz.SchedulerFactory;import org.quartz.TriggerBuilder;import org.quartz.TriggerKey;import org.quartz.impl.StdSchedulerFactory;import org.slf4j.Logger;import org.slf4j.LoggerFactory;import org.springframework.beans.factory.annotation.Autowired;import org.springframework.web.bind.annotation.GetMapping;import org.springframework.web.bind.annotation.PostMapping;import org.springframework.web.bind.annotation.RequestMapping;import org.springframework.web.bind.annotation.RequestParam;import org.springframework.web.bind.annotation.RestController;import com.example.demo.entity.JobAndTrigger;import com.example.demo.job.BaseJob;import com.example.demo.service.IJobAndTriggerService;import com.github.pagehelper.PageInfo;@RestController@RequestMapping(value="/job")public class JobController { @Autowired private IJobAndTriggerService iJobAndTriggerService; private static Logger log = LoggerFactory.getLogger(JobController.class); @PostMapping(value="/addjob") public void addjob(@RequestParam(value="jobClassName")String jobClassName, @RequestParam(value="jobGroupName")String jobGroupName, @RequestParam(value="cronExpression")String cronExpression) throws Exception { addJob(jobClassName, jobGroupName, cronExpression); } public static void addJob(String jobClassName, String jobGroupName, String cronExpression)throws Exception{ SchedulerFactory sf = new StdSchedulerFactory(); Scheduler sched = sf.getScheduler(); sched.start(); JobDetail jobDetail = JobBuilder.newJob(getClass(jobClassName).getClass()).withIdentity(jobClassName, jobGroupName).build(); CronScheduleBuilder scheduleBuilder = CronScheduleBuilder.cronSchedule(cronExpression); CronTrigger trigger = TriggerBuilder.newTrigger().withIdentity(jobClassName, jobGroupName) .withSchedule(scheduleBuilder).build(); try { sched.scheduleJob(jobDetail, trigger); } catch (SchedulerException e) { System.out.println("创建定时任务失败"+e); throw new Exception("创建定时任务失败"); } } @PostMapping(value="/pausejob") public void pausejob(@RequestParam(value="jobClassName")String jobClassName, @RequestParam(value="jobGroupName")String jobGroupName) throws Exception { jobPause(jobClassName, jobGroupName); } public static void jobPause(String jobClassName, String jobGroupName) throws Exception { SchedulerFactory sf = new StdSchedulerFactory(); Scheduler sched = sf.getScheduler(); sched.pauseJob(JobKey.jobKey(jobClassName, jobGroupName)); } @PostMapping(value="/resumejob") public void resumejob(@RequestParam(value="jobClassName")String jobClassName, @RequestParam(value="jobGroupName")String jobGroupName) throws Exception { jobresume(jobClassName, jobGroupName); } public static void jobresume(String jobClassName, String jobGroupName) throws Exception { SchedulerFactory sf = new StdSchedulerFactory(); Scheduler sched = sf.getScheduler(); sched.resumeJob(JobKey.jobKey(jobClassName, jobGroupName)); } @PostMapping(value="/reschedulejob") public void rescheduleJob(@RequestParam(value="jobClassName")String jobClassName, @RequestParam(value="jobGroupName")String jobGroupName, @RequestParam(value="cronExpression")String cronExpression) throws Exception { jobreschedule(jobClassName, jobGroupName, cronExpression); } public static void jobreschedule(String jobClassName, String jobGroupName, String cronExpression) throws Exception { try { SchedulerFactory schedulerFactory = new StdSchedulerFactory(); Scheduler scheduler = schedulerFactory.getScheduler(); TriggerKey triggerKey = TriggerKey.triggerKey(jobClassName, jobGroupName); CronScheduleBuilder scheduleBuilder = CronScheduleBuilder.cronSchedule(cronExpression); CronTrigger trigger = (CronTrigger) scheduler.getTrigger(triggerKey); trigger = trigger.getTriggerBuilder().withIdentity(triggerKey).withSchedule(scheduleBuilder).build(); scheduler.rescheduleJob(triggerKey, trigger); } catch (SchedulerException e) { System.out.println("更新定时任务失败"+e); throw new Exception("更新定时任务失败"); } } @PostMapping(value="/deletejob") public void deletejob(@RequestParam(value="jobClassName")String jobClassName, @RequestParam(value="jobGroupName")String jobGroupName) throws Exception { jobdelete(jobClassName, jobGroupName); } public static void jobdelete(String jobClassName, String jobGroupName) throws Exception { SchedulerFactory sf = new StdSchedulerFactory(); Scheduler sched = sf.getScheduler(); sched.pauseTrigger(TriggerKey.triggerKey(jobClassName, jobGroupName)); sched.unscheduleJob(TriggerKey.triggerKey(jobClassName, jobGroupName)); sched.deleteJob(JobKey.jobKey(jobClassName, jobGroupName)); } @GetMapping(value="/queryjob") public Map<String, Object> queryjob(@RequestParam(value="pageNum")Integer pageNum, @RequestParam(value="pageSize")Integer pageSize) { PageInfo<JobAndTrigger> jobAndTrigger = iJobAndTriggerService.getJobAndTriggerDetails(pageNum, pageSize); Map<String, Object> map = new HashMap<String, Object>(); map.put("JobAndTrigger", jobAndTrigger); map.put("number", jobAndTrigger.getTotal()); return map; } public static BaseJob getClass(String classname) throws Exception { Class<?> class1 = Class.forName(classname); return (BaseJob)class1.newInstance(); }}
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注意最下面的这个方法，根据类名称，通过反射得到该类，然后创建一个BaseJob的实例。由于NewJob和HelloJob都实现了BaseJob，所以这里不需要我们手动去判断。这里涉及到了一些java多态调用的机制，篇幅原因不多做解释。
其他的部分，例如service层，dao层以及mapper，与上一篇文章几乎完全相同。我们可以看一下现在的工程结构：
我们可以看到static下的JobManager.html，这个是前端的一个简单的管理页面。Spring Boot的web工程中，静态页面可以放在static目录下。这里贴一下代码，与之前几乎没区别：
<!DOCTYPE html><html><head><meta charset="UTF-8"> <title>QuartzDemo</title> <link rel="stylesheet" href="https://unpkg.com/element-ui/lib/theme-default/index.css"> <script src="https://unpkg.com/vue/dist/vue.js"></script> <script src="http://cdn.bootcss.com/vue-resource/1.3.4/vue-resource.js"></script> <script src="https://unpkg.com/element-ui/lib/index.js"></script> <style> #top { background:#20A0FF; padding:5px; overflow:hidden } </style></head><body> <div id="test"> <div id="top"> <el-button type="text" @click="search" style="color:white">查询</el-button> <el-button type="text" @click="handleadd" style="color:white">添加</el-button> </span> </div> <br/> <div style="margin-top:15px"> <el-table ref="testTable" :data="tableData" style="width:100%" border > <el-table-column prop="job_NAME" label="任务名称" sortable show-overflow-tooltip> </el-table-column> <el-table-column prop="job_GROUP" label="任务所在组" sortable> </el-table-column> <el-table-column prop="job_CLASS_NAME" label="任务类名" sortable> </el-table-column> <el-table-column prop="trigger_NAME" label="触发器名称" sortable> </el-table-column> <el-table-column prop="trigger_GROUP" label="触发器所在组" sortable> </el-table-column> <el-table-column prop="cron_EXPRESSION" label="表达式" sortable> </el-table-column> <el-table-column prop="time_ZONE_ID" label="时区" sortable> </el-table-column> <el-table-column label="操作" width="300"> <template scope="scope"> <el-button size="small" type="warning" @click="handlePause(scope.$index, scope.row)">暂停</el-button> <el-button size="small" type="info" @click="handleResume(scope.$index, scope.row)">恢复</el-button> <el-button size="small" type="danger" @click="handleDelete(scope.$index, scope.row)">删除</el-button> <el-button size="small" type="success" @click="handleUpdate(scope.$index, scope.row)">修改</el-button> </template> </el-table-column> </el-table> <div align="center"> <el-pagination @size-change="handleSizeChange" @current-change="handleCurrentChange" :current-page="currentPage" :page-sizes="[10, 20, 30, 40]" :page-size="pagesize" layout="total, sizes, prev, pager, next, jumper" :total="totalCount"> </el-pagination> </div> </div> <el-dialog title="添加任务" v-model="dialogFormVisible"> <el-form :model="form"> <el-form-item label="任务名称" label-width="120px" style="width:35%"> <el-input v-model="form.jobName" auto-complete="off"></el-input> </el-form-item> <el-form-item label="任务分组" label-width="120px" style="width:35%"> <el-input v-model="form.jobGroup" auto-complete="off"></el-input> </el-form-item> <el-form-item label="表达式" label-width="120px" style="width:35%"> <el-input v-model="form.cronExpression" auto-complete="off"></el-input> </el-form-item> </el-form> <div slot="footer" class="dialog-footer"> <el-button @click="dialogFormVisible = false">取 消</el-button> <el-button type="primary" @click="add">确 定</el-button> </div> </el-dialog> <el-dialog title="修改任务" v-model="updateFormVisible"> <el-form :model="updateform"> <el-form-item label="表达式" label-width="120px" style="width:35%"> <el-input v-model="updateform.cronExpression" auto-complete="off"></el-input> </el-form-item> </el-form> <div slot="footer" class="dialog-footer"> <el-button @click="updateFormVisible = false">取 消</el-button> <el-button type="primary" @click="update">确 定</el-button> </div> </el-dialog> </div> <footer align="center"> <p>© Quartz 任务管理</p> </footer> <script> var vue = new Vue({ el:"#test", data: { tableData: [], url:'job/queryjob', pagesize: 10, currentPage: 1, start: 1, totalCount: 1000, dialogFormVisible: false, updateFormVisible: false, form: { jobName: '', jobGroup: '', cronExpression: '', }, updateform: { jobName: '', jobGroup: '', cronExpression: '', }, }, methods: { loadData: function(pageNum, pageSize){ this.$http.get('job/queryjob?' + 'pageNum=' + pageNum + '&pageSize=' + pageSize).then(function(res){ console.log(res) this.tableData = res.body.JobAndTrigger.list; this.totalCount = res.body.number; },function(){ console.log('failed'); }); }, handleDelete: function(index, row) { this.$http.post('job/deletejob',{"jobClassName":row.job_NAME,"jobGroupName":row.job_GROUP},{emulateJSON: true}).then(function(res){ this.loadData( this.currentPage, this.pagesize); },function(){ console.log('failed'); }); }, handlePause: function(index, row){ this.$http.post('job/pausejob',{"jobClassName":row.job_NAME,"jobGroupName":row.job_GROUP},{emulateJSON: true}).then(function(res){ this.loadData( this.currentPage, this.pagesize); },function(){ console.log('failed'); }); }, handleResume: function(index, row){ this.$http.post('job/resumejob',{"jobClassName":row.job_NAME,"jobGroupName":row.job_GROUP},{emulateJSON: true}).then(function(res){ this.loadData( this.currentPage, this.pagesize); },function(){ console.log('failed'); }); }, search: function(){ this.loadData(this.currentPage, this.pagesize); }, handleadd: function(){ this.dialogFormVisible = true; }, add: function(){ this.$http.post('job/addjob',{"jobClassName":this.form.jobName,"jobGroupName":this.form.jobGroup,"cronExpression":this.form.cronExpression},{emulateJSON: true}).then(function(res){ this.loadData(this.currentPage, this.pagesize); this.dialogFormVisible = false; },function(){ console.log('failed'); }); }, handleUpdate: function(index, row){ console.log(row) this.updateFormVisible = true; this.updateform.jobName = row.job_CLASS_NAME; this.updateform.jobGroup = row.job_GROUP; }, update: function(){ this.$http.post ('job/reschedulejob', {"jobClassName":this.updateform.jobName, "jobGroupName":this.updateform.jobGroup, "cronExpression":this.updateform.cronExpression },{emulateJSON: true} ).then(function(res){ this.loadData(this.currentPage, this.pagesize); this.updateFormVisible = false; },function(){ console.log('failed'); }); }, handleSizeChange: function(val) { this.pagesize = val; this.loadData(this.currentPage, this.pagesize); }, handleCurrentChange: function(val) { this.currentPage = val; this.loadData(this.currentPage, this.pagesize); }, }, }); vue.loadData(vue.currentPage, vue.pagesize); </script> </body></html>
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唯一的区别是这里所用到的所有vue插件和ElementUI插件都是通过CDN方式引入，方便读者下载之后直接运行。需要注意的是，在添加新的任务的时候，填写任务名称时一定要把这个Job类的完整路径输入进来。例如
否则会报找不到该类的错误。对于Cron表达式，可以去在线Cron表达式生成器根据自己的需求自动生成。程序的截图如下
这两个任务执行的log：
2017-06-27 17:23:56.194 ERROR 9972 --- [eduler_Worker-3] com.example.demo.job.HelloJob: Hello Job执行时间: Tue Jun 27 17:23:56 CST 20172017-06-27 17:23:57.042 ERROR 9972 --- [eduler_Worker-4] com.example.demo.job.NewJob: New Job执行时间: Tue Jun 27 17:23:57 CST 20172017-06-27 17:23:58.051 ERROR 9972 --- [eduler_Worker-5] com.example.demo.job.HelloJob: Hello Job执行时间: Tue Jun 27 17:23:58 CST 20172017-06-27 17:24:00.070 ERROR 9972 --- [eduler_Worker-1] com.example.demo.job.NewJob: New Job执行时间: Tue Jun 27 17:24:00 CST 20172017-06-27 17:24:00.144 ERROR 9972 --- [eduler_Worker-2] com.example.demo.job.HelloJob: Hello Job执行时间: Tue Jun 27 17:24:00 CST 20172017-06-27 17:24:02.099 ERROR 9972 --- [eduler_Worker-3] com.example.demo.job.HelloJob: Hello Job执行时间: Tue Jun 27 17:24:02 CST 20172017-06-27 17:24:03.329 ERROR 9972 --- [eduler_Worker-4] com.example.demo.job.NewJob: New Job执行时间: Tue Jun 27 17:24:03 CST 2017
工程地址
这个工程已上传至我的github。如果你按上一篇文章的方法已经在mysql数据库中用脚本建立了数据表，那么下载这个工程之后只需要把application.yml和quartz.properties中对数据库连接的配置修改成你自己的数据库配置即可。
运行方法
Spring Boot工程已经集成了服务器。右键点击DemoApplication.java -> Run As -> Java Application即可运行工程。默认端口为8080，启动后在浏览器地址栏输入http://localhost:8080/JobManager.html就可以看到效果。
