# spring boot / cloud (十) 使用quartz搭建调度中心

##前言


###quartz介绍:


>Quartz是OpenSymphony开源组织在Job scheduling领域又一个开源项目，它可以与J2EE与J2SE应用程序相结合也可以单独使用。Quartz可以用来创建简单或为运行十个，百个，甚至是好几万个Jobs这样复杂的程序。Jobs可以做成标准的Java组件或 EJBs。Quartz的最新版本为Quartz 2.3.0


##思路


将quartz集成进spring boot,并且提供一下内容:


- 配置


- 样例作业和触发器
 

##实现


###1.配置

引入maven依赖(这里的quartz使用的是2.2.3)

``` xml
<dependency>
  <groupId>org.springframework</groupId>
  <artifactId>spring-context-support</artifactId>
</dependency>

<dependency>
  <groupId>org.quartz-scheduler</groupId>
  <artifactId>quartz</artifactId>
  <version>${quartz.version}</version>
</dependency>
```

编写AutowiringSpringBeanJobFactory类

``` java
public final class AutowiringSpringBeanJobFactory extends SpringBeanJobFactory
    implements ApplicationContextAware {

  /**
   * 描述 : beanFactory
   */
  private AutowireCapableBeanFactory beanFactory;

  @Override
  public void setApplicationContext(final ApplicationContext context) {
    beanFactory = context.getAutowireCapableBeanFactory();
  }

  @Override
  protected Object createJobInstance(final TriggerFiredBundle bundle) throws Exception {
    final Object job = super.createJobInstance(bundle);
    beanFactory.autowireBean(job);
    return job;
  }
}
```

编写SchedulerConfig类

``` java
@Configuration
@ConfigurationProperties(prefix = "org.itkk.scheduler.config")
@Validated
public class SchedulerConfig {

..........

}
```

编写SchedulerConfig类-属性

``` java
  //是否记录日志
  @NotNull
  private Boolean logFlag = true;
  //是否记录详细日志
  @NotNull
  private Boolean logDetailFlag = false;
  //是否自动启动
  @NotNull
  private Boolean autoStartup = true;
  //是否覆盖已经存在的jobs
  @NotNull
  private Boolean overwriteExistingJobs = true;
  //延迟启动秒数
  @NotNull
  private Integer startupDelay = 0;
  //Job接受applicationContext的成员变量名
  @NotNull
  private String applicationContextSchedulerContextKey = "applicationContext";
  //quartz配置文件地址
  @NotNull
  private String quartzPropertiesPath = "def_quartz.properties";
```

编写SchedulerConfig类-编写bean

``` java
  @Bean
  public JobFactory jobFactory(ApplicationContext applicationContext) {
    AutowiringSpringBeanJobFactory jobFactory = new AutowiringSpringBeanJobFactory();
    jobFactory.setApplicationContext(applicationContext);
    return jobFactory;
  }
  
  @Bean
  public Properties quartzProperties() throws IOException {
    PropertiesFactoryBean propertiesFactoryBean = new PropertiesFactoryBean();
    propertiesFactoryBean.setLocation(new ClassPathResource(getQuartzPropertiesPath()));
    propertiesFactoryBean.afterPropertiesSet();
    return propertiesFactoryBean.getObject();
  }
  
  @Bean("clusterQuartzScheduler")
  public SchedulerFactoryBean schedulerFactoryBean(DataSource dataSource, JobFactory jobFactory,
      Properties quartzProperties)
      throws IOException {
    //实例化
    SchedulerFactoryBean factory = new SchedulerFactoryBean();
    factory.setDataSource(dataSource);
    factory.setJobFactory(jobFactory);
    //属性设置
    factory.setQuartzProperties(quartzProperties);
    factory.setOverwriteExistingJobs(getOverwriteExistingJobs());
    factory.setAutoStartup(getAutoStartup());
    factory.setStartupDelay(getStartupDelay());
    factory.setApplicationContextSchedulerContextKey(getApplicationContextSchedulerContextKey());
    //返回
    return factory;
  }
```

编写def_quartz.properties配置文件

``` properties
#Configure scheduler
org.quartz.scheduler.instanceName=clusterQuartzScheduler
org.quartz.scheduler.instanceId=AUTO
org.quartz.scheduler.skipUpdateCheck=true

#Configure ThreadPool
org.quartz.threadPool.class=org.quartz.simpl.SimpleThreadPool
org.quartz.threadPool.threadCount=5
org.quartz.threadPool.threadPriority=5

#Configure JobStore and Cluster
org.quartz.jobStore.class=org.quartz.impl.jdbcjobstore.JobStoreTX
org.quartz.jobStore.driverDelegateClass=org.quartz.impl.jdbcjobstore.StdJDBCDelegate
org.quartz.jobStore.useProperties=true
org.quartz.jobStore.tablePrefix=QRTZ_
org.quartz.jobStore.isClustered=true
org.quartz.jobStore.clusterCheckinInterval=20000
org.quartz.jobStore.misfireThreshold=60000
```

执行数据库脚本,以及数据库配置(按需,我这里选择的是h2)


``` properties

tables_h2.sql

########################################################
###DATASOURCE (DataSourceAutoConfiguration & DataSourceProperties)
########################################################
spring.datasource.url=jdbc:h2:file:D:/develop/d2_db/testdb

```

## **代码仓库** (博客配套代码)

- [udf-starter : 基础项目,脚手架,框架](https://gitee.com/wangkang/udf)

- [udf-sample : 集成样例](https://gitee.com/wangkang/udf-sample)

##结束

以上演示了quartz在spring boot中的配置,在下一章里会聊一下通过RMS来实现分布式调度的调度器的设计.

---------

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