quartz集群

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项目中往往部署多台 tomcat,但是项目中集成了quartz的话，每台tomcat中的项目都会执行，就导致了job执行多次，

quartz集群环境下，允许部署多台，但是只有一台会执行，而且一台宕机，还能有一台会执行

以下是spring boot整合quartz 集群，

quartz集群是基于数据库的，把job保存到数据库里面，执行的时候，谁先获取到数据库的锁，就拥有了执行权限，

quartz.properties:

#============================================================================# Configure Main Scheduler Properties#============================================================================#instanceName相同，但是instanceId要不同，此处配置成自动生成org.quartz.scheduler.instanceName = xxxClusterSchedulerorg.quartz.scheduler.instanceId = AUTO#============================================================================# Configure ThreadPool#============================================================================org.quartz.threadPool.class = org.quartz.simpl.SimpleThreadPoolorg.quartz.threadPool.threadCount = 20org.quartz.threadPool.threadPriority = 5#============================================================================# Configure JobStore#============================================================================org.quartz.jobStore.misfireThreshold = 60000org.quartz.jobStore.class = org.quartz.impl.jdbcjobstore.JobStoreTXorg.quartz.jobStore.driverDelegateClass = org.quartz.impl.jdbcjobstore.MSSQLDelegateorg.quartz.jobStore.maxMisfiresToHandleAtATime=1org.quartz.jobStore.useProperties = falseorg.quartz.jobStore.dataSource = myDSorg.quartz.jobStore.tablePrefix = QRTZ_org.quartz.jobStore.isClustered = trueorg.quartz.jobStore.clusterCheckinInterval = 20000org.quartz.jobStore.selectWithLockSQL = SELECT * FROM {0}LOCKS WHERE LOCK_NAME = ? FOR UPDATE  #此处的{0}不要改#============================================================================# Configure Datasources#============================================================================org.quartz.dataSource.myDS.driver =  com.mysql.jdbc.Driverorg.quartz.dataSource.myDS.URL = @quartz.jdbc.url@   #此处变量来自 pom文件org.quartz.dataSource.myDS.user = @quartz.jdbc.username@org.quartz.dataSource.myDS.password =@quartz.jdbc.password@org.quartz.dataSource.myDS.maxConnections = 20org.quartz.dataSource.myDS.validationQuery=select 0 from dual

定义一个job

@Component("taskScanJob")public class TaskScanJob {    private static Logger logger = LoggerFactory.getLogger(TaskScanJob.class);    @Autowired    private JobService jobService;    public void execute() {        System.out.println(new Date());    }}

因为quartz的 job由spring生成，但是里面的属性没有办法自动注入，以下是解决办法

/** * 自定义jobFactory，用于解决quartz无法注入spring属性问题 * Created by MJH on 2017/5/31. */@Component("quartzJobFactory")public class QuartzJobFactory extends SpringBeanJobFactory {    @Autowired    private AutowireCapableBeanFactory beanFactory;    @Override    protected Object createJobInstance(TriggerFiredBundle bundle) throws Exception {        Object jobInstance = super.createJobInstance(bundle);        beanFactory.autowireBean(jobInstance);        return jobInstance;    }}

spring-quartz.xml

<bean id="taskScanJobDetail" class="org.springframework.scheduling.quartz.JobDetailFactoryBean"><property name="durability" value="true"/><property name="requestsRecovery" value="true"/><property name="jobClass" value="com.xxx.task.TaskScanJob" /></bean><bean id="taskScanCronTriggerBean" class="org.springframework.scheduling.quartz.CronTriggerFactoryBean"><property name="jobDetail" ref="taskScanJobDetail" /><!-- 每隔1分钟执行一次 --><property name="cronExpression" value="0 */1 * * * ?" /></bean><!-- 所有的job的触发器都写在list中 --><bean class="org.springframework.scheduling.quartz.SchedulerFactoryBean"><property name="dataSource" ref="dataSource" /><property name="jobFactory" ref="quartzJobFactory"/>        <property name="configLocation" value="classpath:quartz.properties" /><property name="triggers"><list><ref bean="taskScanCronTriggerBean"/></list></property>  <!-- 设置自动启动 --><property name="autoStartup" value="true" /><!--QuartzScheduler 启动时更新己存在的Job，这样就不用每次修改targetObject后删除qrtz_job_details表对应记录了    --><property name="overwriteExistingJobs" value="true"/>

springboot项目的启动类

@SpringBootApplication@ImportResource("classpath:spring-task.xml")@MapperScan("com.xxx.mapper")@EnableDiscoveryClientpublic class SchedulerApplication {    private static Logger logger = LoggerFactory.getLogger(SchedulerApplication.class);    public static void main(String[] args) {        SpringApplication.run(SchedulerApplication.class, args);    }}

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