独角兽企业重金招聘Python工程师标准>>>
首先在项目pom.xml中添加Quartz依赖
<dependency><groupId>org.quartz-scheduler</groupId><artifactId>quartz</artifactId><version>2.2.1</version></dependency><dependency><groupId>org.springframework</groupId><artifactId>spring-context-support</artifactId></dependency>
我们在src/main/resources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：
# \u56FA\u5B9A\u524D\u7F00org.quartz# \u4E3B\u8981\u5206\u4E3Ascheduler\u3001threadPool\u3001jobStore\u3001plugin\u7B49\u90E8\u5206##org.quartz.scheduler.instanceName = DefaultQuartzSchedulerorg.quartz.scheduler.rmi.export = falseorg.quartz.scheduler.rmi.proxy = falseorg.quartz.scheduler.wrapJobExecutionInUserTransaction = false# \u5B9E\u4F8B\u5316ThreadPool\u65F6\uFF0C\u4F7F\u7528\u7684\u7EBF\u7A0B\u7C7B\u4E3ASimpleThreadPoolorg.quartz.threadPool.class = org.quartz.simpl.SimpleThreadPool# threadCount\u548CthreadPriority\u5C06\u4EE5setter\u7684\u5F62\u5F0F\u6CE8\u5165ThreadPool\u5B9E\u4F8B# \u5E76\u53D1\u4E2A\u6570org.quartz.threadPool.threadCount = 5# \u4F18\u5148\u7EA7org.quartz.threadPool.threadPriority = 5org.quartz.threadPool.threadsInheritContextClassLoaderOfInitializingThread = trueorg.quartz.jobStore.misfireThreshold = 5000# \u9ED8\u8BA4\u5B58\u50A8\u5728\u5185\u5B58\u4E2Dorg.quartz.jobStore.class = org.quartz.simpl.RAMJobStore#\u6301\u4E45\u5316\uFF0C\u6570\u636E\u6E90\u7684\u94FE\u63A5\u65B9\u5F0F#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 =#org.quartz.dataSource.qzDS.user =#org.quartz.dataSource.qzDS.password =#org.quartz.dataSource.qzDS.maxConnections = 10---------------------\u4F5C\u8005\uFF1A\u8D75\u6DA6\u6CFD\u540C\u5B66\u6765\u6E90\uFF1ACSDN\u539F\u6587\uFF1A/qq_37804737/article/details/84335880\u7248\u6743\u58F0\u660E\uFF1A\u672C\u6587\u4E3A\u535A\u4E3B\u539F\u521B\u6587\u7AE0\uFF0C\u8F6C\u8F7D\u8BF7\u9644\u4E0A\u535A\u6587\u94FE\u63A5\uFF01
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.api.utils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.api.utils;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;@Configurationpublic class SchedulerConfig {@Bean(name="SchedulerFactory")public SchedulerFactoryBean schedulerFactoryBean() throws IOException {SchedulerFactoryBean factory = new SchedulerFactoryBean();factory.setQuartzProperties(quartzProperties());return factory;}@Beanpublic 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*/@Beanpublic 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();}}
实现
先来看Job类。首先设置一个BaseJob接口，用来继承Job类：
package com.api.utils;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.api.utils;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.api.utils;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()); } }
接下来我们可以先直接看一下看一下Controller
package com.api.controller;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.PostMapping;import org.springframework.web.bind.annotation.RequestMapping;import org.springframework.web.bind.annotation.RequestParam;import org.springframework.web.bind.annotation.RestController;import com.api.utils.BaseJob;@RestController@RequestMapping(value = "/job")public class JobController {// 加入Qulifier注解，通过名称注入bean@Autowired@Qualifier("Scheduler")private Scheduler scheduler;@SuppressWarnings("unused")private static Logger log = LoggerFactory.getLogger(JobController.class);/*** 添加任务** @param jobClassName* @param jobGroupName* @param cronExpression* @throws Exception*/@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triggerCronTrigger 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");}}/*** 暂停任务** @param jobClassName* @param jobGroupName* @throws Exception*/@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));}/*** 继续任务** @param jobClassName* @param jobGroupName* @throws Exception*/@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));}/*** 重新安排任务** @param jobClassName* @param jobGroupName* @param cronExpression* @throws Exception*/@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triggertrigger = 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");}}/*** 删除任务** @param jobClassName* @param jobGroupName* @throws Exception*/@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));}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
