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.xml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xml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.Driver
mybatis:
mapper-locations:
- classpath:com/example/demo/mapper/*.xml
type-aliases-package: com.example.demo.entity
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 = DefaultQuartzScheduler org.quartz.scheduler.rmi.export = false org.quartz.scheduler.rmi.proxy = false org.quartz.scheduler.wrapJobExecutionInUserTransaction = false # 实例化ThreadPool时,使用的线程类为SimpleThreadPool org.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 = 5 org.quartz.threadPool.threadsInheritContextClassLoaderOfInitializingThread = true org.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.JobStoreTX org.quartz.jobStore.tablePrefix = QRTZ_ org.quartz.jobStore.dataSource = qzDS org.quartz.dataSource.qzDS.driver = com.mysql.jdbc.Driver org.quartz.dataSource.qzDS.URL = jdbc:mysql://190.0.1.88:3306/hello_test?useUnicode=true&characterEncoding=UTF-8 org.quartz.dataSource.qzDS.user = root org.quartz.dataSource.qzDS.password = root org.quartz.dataSource.qzDS.maxConnections = 10
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 org.quartz.Scheduler; 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; @Configuration public class SchedulerConfig { @Bean(name="SchedulerFactory") public SchedulerFactoryBean schedulerFactoryBean() 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")); //在quartz.properties中的属性被读取并注入后再初始化对象 propertiesFactoryBean.afterPropertiesSet(); return propertiesFactoryBean.getObject(); } /* * quartz初始化监听器 */ @Bean public QuartzInitializerListener executorListener() { return new QuartzInitializerListener(); } /* * 通过SchedulerFactoryBean获取Scheduler的实例 */ @Bean(name="Scheduler") public Scheduler scheduler() throws IOException { return schedulerFactoryBean().getScheduler(); } }
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()); } }
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()); } }
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.TriggerBuilder; import org.quartz.TriggerKey; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.beans.factory.annotation.Qualifier; 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; //加入Qulifier注解,通过名称注入bean @Autowired @Qualifier("Scheduler") private Scheduler scheduler; 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 void addJob(String jobClassName, String jobGroupName, String cronExpression)throws Exception{ // 启动调度器 scheduler.start(); //构建job信息 JobDetail jobDetail = JobBuilder.newJob(getClass(jobClassName).getClass()).withIdentity(jobClassName, jobGroupName).build(); //表达式调度构建器(即任务执行的时间) CronScheduleBuilder scheduleBuilder = CronScheduleBuilder.cronSchedule(cronExpression); //按新的cronExpression表达式构建一个新的trigger CronTrigger trigger = TriggerBuilder.newTrigger().withIdentity(jobClassName, jobGroupName) .withSchedule(scheduleBuilder).build(); try { scheduler.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 void jobPause(String jobClassName, String jobGroupName) throws Exception { scheduler.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 void jobresume(String jobClassName, String jobGroupName) throws Exception { scheduler.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 void jobreschedule(String jobClassName, String jobGroupName, String cronExpression) throws Exception { try { TriggerKey triggerKey = TriggerKey.triggerKey(jobClassName, jobGroupName); // 表达式调度构建器 CronScheduleBuilder scheduleBuilder = CronScheduleBuilder.cronSchedule(cronExpression); CronTrigger trigger = (CronTrigger) scheduler.getTrigger(triggerKey); // 按新的cronExpression表达式重新构建trigger trigger = trigger.getTriggerBuilder().withIdentity(triggerKey).withSchedule(scheduleBuilder).build(); // 按新的trigger重新设置job执行 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 void jobdelete(String jobClassName, String jobGroupName) throws Exception { scheduler.pauseTrigger(TriggerKey.triggerKey(jobClassName, jobGroupName)); scheduler.unscheduleJob(TriggerKey.triggerKey(jobClassName, jobGroupName)); scheduler.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(); } }
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@2.0.5/lib/theme-chalk/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@2.0.5/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" :visible.syn="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" :visible.syn="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: { //表格当前页数据 tableData: [], //请求的URL url:‘job/queryjob‘, //默认每页数据量 pagesize: 10, //当前页码 currentPage: 1, //查询的页码 start: 1, //默认数据总数 totalCount: 1000, //添加对话框默认可见性 dialogFormVisible: false, //修改对话框默认可见性 updateFormVisible: false, //提交的表单 form: { jobName: ‘‘, jobGroup: ‘‘, cronExpression: ‘‘, }, updateform: { jobName: ‘‘, jobGroup: ‘‘, cronExpression: ‘‘, }, }, methods: { //从服务器读取数据 loadData: function(pageNum, pageSize){ this.$http.get(‘job/queryjob?‘ + ‘pageNum=‘ + pageNum + ‘&pageSize=‘ + pageSize).then(function(res){ console.log(res) this.tableData = res.body.JobAndTrigger.list; this.totalCount = res.body.number; },function(){ console.log(‘failed‘); }); }, //单行删除 handleDelete: function(index, row) { this.$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‘); }); }, //暂停任务 handlePause: function(index, row){ this.$http.post(‘job/pausejob‘,{"jobClassName":row.job_NAME,"jobGroupName":row.job_GROUP},{emulateJSON: true}).then(function(res){ this.loadData( this.currentPage, this.pagesize); },function(){ console.log(‘failed‘); }); }, //恢复任务 handleResume: function(index, row){ this.$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‘); }); }, //搜索 search: function(){ this.loadData(this.currentPage, this.pagesize); }, //弹出对话框 handleadd: function(){ this.dialogFormVisible = true; }, //添加 add: function(){ this.$http.post(‘job/addjob‘,{"jobClassName":this.form.jobName,"jobGroupName":this.form.jobGroup,"cronExpression":this.form.cronExpression},{emulateJSON: true}).then(function(res){ this.loadData(this.currentPage, this.pagesize); this.dialogFormVisible = false; },function(){ console.log(‘failed‘); }); }, //更新 handleUpdate: function(index, row){ console.log(row) this.updateFormVisible = true; this.updateform.jobName = row.job_CLASS_NAME; this.updateform.jobGroup = row.job_GROUP; }, //更新任务 update: function(){ this.$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‘); }); }, //每页显示数据量变更 handleSizeChange: function(val) { this.pagesize = val; this.loadData(this.currentPage, this.pagesize); }, //页码变更 handleCurrentChange: function(val) { this.currentPage = val; this.loadData(this.currentPage, this.pagesize); }, }, }); //载入数据 vue.loadData(vue.currentPage, vue.pagesize); </script> </body> </html>
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 2017
2017-06-27 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 2017
2017-06-27 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 2017
2017-06-27 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 2017
2017-06-27 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 2017
2017-06-27 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 2017
2017-06-27 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。
2017/12/7更新:修改了scheduler的初始化方式:在配置文件中进行初始化bean,并通过autowired的方式注入到controller中。此更新已同步至我的github和本篇文章内的代码。修改了两个文件:SchedulerConfig.java和JobController.java。另:若读者需要修改程序运行端口,可在application.yml中最上面加入以下代码(以端口9065为例):
server:
port: 9065
并重新启动工程,输入http://localhost:9065/JobManager.html即可。