SpringBoot2.0整合Quartz定时任务（持久化到数据库，更为简单的方式）

1. pom文件添加依赖

<dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-quartz</artifactId>
        </dependency>
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <scope>runtime</scope>
        </dependency>
        <dependency>
            <groupId>org.mybatis.spring.boot</groupId>
            <artifactId>mybatis-spring-boot-starter</artifactId>
            <version>1.3.1</version>
        </dependency>
        <dependency>
            <groupId>com.mchange</groupId>
            <artifactId>c3p0</artifactId>
            <version>0.9.5.2</version>
        </dependency>
        <!--&lt;!&ndash; druid数据库连接池 &ndash;&gt;-->
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>druid-spring-boot-starter</artifactId>
            <version>1.1.10</version>
        </dependency>
    </dependencies>

2. yml配置

spring:
  datasource:
    url: jdbc:mysql://localhost:3306/aipyun?serverTimezone=GMT&characterEncoding=utf8&zeroDateTimeBehavior=convertToNull&allowMultiQueries=true
    username: root
    password: root123
    driver-class-name: com.mysql.jdbc.Driver
    type: com.alibaba.druid.pool.DruidDataSource
    druid:
      initialSize: 2
      minIdle: 2
      maxActive: 30
      #StatViewServlet:
      #loginUsername: admin
      #loginPassword: admin
  quartz:
    #相关属性配置
    properties:
      org:
        quartz:
          scheduler:
            instanceName: DefaultQuartzScheduler
            instanceId: AUTO
          jobStore:
            class: org.quartz.impl.jdbcjobstore.JobStoreTX
            driverDelegateClass: org.quartz.impl.jdbcjobstore.StdJDBCDelegate
            tablePrefix: QRTZ_
            isClustered: false
            clusterCheckinInterval: 10000
            useProperties: true
          threadPool:
            class: org.quartz.simpl.SimpleThreadPool
            threadCount: 10
            threadPriority: 5
            threadsInheritContextClassLoaderOfInitializingThread: true
          dataSource:
            default:
              URL: jdbc:mysql://localhost:3306/aipyun?characterEncoding=utf-8
              user: root
              password: root123
              driver: com.mysql.jdbc.Driver

    #数据库方式
    job-store-type: jdbc
      #初始化表结构
    #jdbc:
    #initialize-schema: never

我们可以对比下这个配置文件和之前的quartz.properties的区别，基本一模一样，只不过写的格式不一样而已。

3. 业务逻辑代码

    /**
     * 删除job
     *
     * @param triggerName  触发器名称
     * @param triggerGroup 触发器分组
     * @param jobName      任务名称
     * @param jobGroup     任务分组
     * @throws SchedulerException
     */
    public void deleteJob(String triggerName, String triggerGroup, String jobName, String jobGroup) throws SchedulerException {
        TriggerKey triggerKey = TriggerKey.triggerKey(triggerName, triggerGroup);
        scheduler.pauseTrigger(triggerKey);
        scheduler.unscheduleJob(triggerKey);
        JobKey jobKey = JobKey.jobKey(jobName, jobGroup);
        scheduler.deleteJob(jobKey);
    }

    /**
     * 修改定时任务
     *
     * @param oldTriggerKey 需要修改的TriggerKey 也就是唯一标识
     * @param cron          新的cron表达式
     */
    public void updateJob(TriggerKey oldTriggerKey, String cron) {
        CronScheduleBuilder scheduleBuilder = CronScheduleBuilder.cronSchedule(cron);
        CronTrigger cronTrigger = TriggerBuilder.newTrigger()
                .withIdentity(oldTriggerKey).withSchedule(scheduleBuilder).build();
        try {
            scheduler.rescheduleJob(oldTriggerKey, cronTrigger);
        } catch (SchedulerException e) {
            e.printStackTrace();
        }
    }

    /**
     * 新增job任务
     *
     * @param jobName          job名称
     * @param jobGroupName     job分组名称
     * @param triggerName      触发器名称
     * @param triggerGroupName 触发器分组名称
     * @param jobClass         需要执行的job.class
     * @param cron             cron 表达式
     * @throws SchedulerException
     */
    public void addJob(String jobName, String jobGroupName,
                       String triggerName, String triggerGroupName, Class jobClass, String cron) throws SchedulerException {
        CronScheduleBuilder cronScheduleBuilder = CronScheduleBuilder.cronSchedule(cron);
        JobDetail jobDetail = JobBuilder.newJob(jobClass).withIdentity(jobName, jobGroupName).build();
        Trigger trigger = TriggerBuilder.newTrigger().withIdentity(triggerName, triggerGroupName)
                .withSchedule(cronScheduleBuilder).build();
        scheduler.scheduleJob(jobDetail, trigger);
    }

关于spring-boot-starter-quartz

鄙人用的开发工具是idea，可以直接查看源码，至于用eclispe的怎么查看源码我就不知道了。
我们找到Idea的External Libraries并且展开spring-boot-autoconfigure-2.0.0.RELEASE.jar，找到org.springframework.boot.autoconfigure.quartz，该目录就是SpringBoot为我们提供的Quartz自动化配置源码实现，在该目录下有如下所示几个类：

QuartzAutoConfiguration该类是自动配置的主类，内部配置了SchedulerFactoryBean，相当于我们之前自己配的SchedulerFactoryBean类。
JobStoreType是一个枚举：表示quartz的存储方式：RAM 或者JDBC。
QuartzProperties配置类：从yml或者properties中读取配置信息。