spring boot + quartz集群搭建的完整步驟

更新時間：2018年05月07日 09:26:28 作者：vincent_ren

這篇文章主要給大家介紹了關于spring boot + quartz集群搭建的相關資料，文中通過示例代碼介紹的非常詳細，對大家的學習或者工作具有一定的參考學習價值，需要的朋友們下面隨著小編來一起學習學習吧

quartz集群能力：

quartz集群分為水平集群和垂直集群，水平集群即將定時任務節(jié)點部署在不同的服務器，水平集群最大的問題就是時鐘同步問題，
quartz集群強烈要求時鐘同步，若時鐘不能同步，則會導致集群中各個節(jié)點狀態(tài)紊亂，造成不可預知的后果，請自行搜索服務器時鐘同步,
若能保證時鐘同步，水平集群能保證服務的可靠性，其中一個節(jié)點掛掉或其中一個服務器宕機，其他節(jié)點依然正常服務；垂直集群則是集群各節(jié)點部署在同一臺服務器，
時鐘同步自然不是問題，但存在單點故障問題，服務器宕機會嚴重影響服務的可用性。因此，要結合實際情況來考慮集群方案
由于集群中強烈要求時鐘同步，因此不管是垂直集群還是水平集群，本地開發(fā)決不能連接線上環(huán)境（本地也是集群模式），這樣的話勢必會破壞集群，但本地若是非集群模式，
則可以依情況來連接線上環(huán)境。
quartz集群和redis這樣的集群實現(xiàn)方式不一樣，redis集群需要節(jié)點之間通信，各節(jié)點需要知道其他節(jié)點的狀況，而quartz集群的實現(xiàn)
方式在于11張表，集群節(jié)點相互之間不通信，而是通過定時任務持久化加鎖的方式來實現(xiàn)集群。
破壞集群后果一般是死鎖或者狀態(tài)紊亂每個節(jié)點都不可用或其中某些節(jié)點能用部分或全部的定時任務

以上是個人的一些見解，下面開始本文的正文，本文主要介紹了關于spring boot + quartz集群搭建的相關內容，分享出來供大家參考學習，下面話不多說了，來一起看看詳細的介紹吧。

步驟如下：

spring boot bean配置：

@Configuration
public class QuartzConfig {
 @Value("${quartz.scheduler.instanceName}")
 private String quartzInstanceName;
  
 @Value("${org.quartz.dataSource.myDS.driver}")
 private String myDSDriver;
  
 @Value("${org.quartz.dataSource.myDS.URL}")
 private String myDSURL;
  
 @Value("${org.quartz.dataSource.myDS.user}")
 private String myDSUser;
  
 @Value("${org.quartz.dataSource.myDS.password}")
 private String myDSPassword;
  
 @Value("${org.quartz.dataSource.myDS.maxConnections}")
 private String myDSMaxConnections;
  
  
 /**
  * 設置屬性
  * @return
  * @throws IOException
  */
 private Properties quartzProperties() throws IOException {
  Properties prop = new Properties();
  prop.put("quartz.scheduler.instanceName", quartzInstanceName);
  prop.put("org.quartz.scheduler.instanceId", "AUTO");
  prop.put("org.quartz.scheduler.skipUpdateCheck", "true");
  prop.put("org.quartz.scheduler.jmx.export", "true");
   
  prop.put("org.quartz.jobStore.class", "org.quartz.impl.jdbcjobstore.JobStoreTX");
  prop.put("org.quartz.jobStore.driverDelegateClass", "org.quartz.impl.jdbcjobstore.StdJDBCDelegate");
  prop.put("org.quartz.jobStore.dataSource", "quartzDataSource");
  prop.put("org.quartz.jobStore.tablePrefix", "QRTZ_");
  prop.put("org.quartz.jobStore.isClustered", "true");
   
  prop.put("org.quartz.jobStore.clusterCheckinInterval", "20000");
  prop.put("org.quartz.jobStore.dataSource", "myDS");
  prop.put("org.quartz.jobStore.maxMisfiresToHandleAtATime", "1");
  prop.put("org.quartz.jobStore.misfireThreshold", "120000");
  prop.put("org.quartz.jobStore.txIsolationLevelSerializable", "true");
  prop.put("org.quartz.jobStore.selectWithLockSQL", "SELECT * FROM {0}LOCKS WHERE LOCK_NAME = ? FOR UPDATE");
   
  prop.put("org.quartz.threadPool.class", "org.quartz.simpl.SimpleThreadPool");
  prop.put("org.quartz.threadPool.threadCount", "10");
  prop.put("org.quartz.threadPool.threadPriority", "5");
  prop.put("org.quartz.threadPool.threadsInheritContextClassLoaderOfInitializingThread", "true");
   
  prop.put("org.quartz.dataSource.myDS.driver", myDSDriver);
  prop.put("org.quartz.dataSource.myDS.URL", myDSURL);
  prop.put("org.quartz.dataSource.myDS.user", myDSUser);
  prop.put("org.quartz.dataSource.myDS.password", myDSPassword);
  System.out.println("myDSMaxConnections:" + myDSMaxConnections);
  prop.put("org.quartz.dataSource.myDS.maxConnections", myDSMaxConnections);
   
  prop.put("org.quartz.plugin.triggHistory.class", "org.quartz.plugins.history.LoggingJobHistoryPlugin");
  prop.put("org.quartz.plugin.shutdownhook.class", "org.quartz.plugins.management.ShutdownHookPlugin");
  prop.put("org.quartz.plugin.shutdownhook.cleanShutdown", "true");
  return prop;
 }
  
 @Bean 
 public SchedulerFactoryBean schedulerFactoryBean(@Qualifier("dialogJobTrigger") Trigger cronJobTrigger) throws IOException { 
  SchedulerFactoryBean factory = new SchedulerFactoryBean(); 
  // this allows to update triggers in DB when updating settings in config file: 
  //用于quartz集群,QuartzScheduler 啟動時更新己存在的Job，這樣就不用每次修改targetObject后刪除qrtz_job_details表對應記錄了 
  factory.setOverwriteExistingJobs(true); 
  //用于quartz集群,加載quartz數據源 
  //factory.setDataSource(dataSource); 
  //QuartzScheduler 延時啟動，應用啟動完10秒后 QuartzScheduler 再啟動 
  factory.setStartupDelay(10);
  //用于quartz集群,加載quartz數據源配置 
  factory.setQuartzProperties(quartzProperties());
  factory.setAutoStartup(true);
  factory.setApplicationContextSchedulerContextKey("applicationContext");
  //注冊觸發(fā)器 
  factory.setTriggers(cronJobTrigger);<br data-filtered="filtered">　　　　　//直接使用配置文件
//  factory.setConfigLocation(new FileSystemResource(this.getClass().getResource("/quartz.properties").getPath()));
  return factory; 
 }
  
  
 /**
  * 加載job
  * @return
  */
 @Bean 
 public JobDetailFactoryBean updateDialogStatusJobDetail() { 
  return createJobDetail(InvokingJobDetailDetailFactory.class, "updateDialogStatusGroup", "dialogJob"); 
 } 
 
 /**
  * 加載觸發(fā)器
  * @param jobDetail
  * @return
  */
 @Bean(name = "dialogJobTrigger") 
 public CronTriggerFactoryBean dialogStatusJobTrigger(@Qualifier("updateDialogStatusJobDetail") JobDetail jobDetail) { 
  return dialogStatusTrigger(jobDetail, "0 0 0/1 * * ?"); 
 } 
 
 /**
  * 創(chuàng)建job工廠
  * @param jobClass
  * @param groupName
  * @param targetObject
  * @return
  */
 private static JobDetailFactoryBean createJobDetail(Class<?> jobClass, String groupName, String targetObject) { 
  JobDetailFactoryBean factoryBean = new JobDetailFactoryBean(); 
  factoryBean.setJobClass(jobClass); 
  factoryBean.setDurability(true); 
  factoryBean.setRequestsRecovery(true);
  factoryBean.setGroup(groupName);
  Map<String, String> map = new HashMap<>();
  map.put("targetObject", targetObject);
  map.put("targetMethod", "execute");
  factoryBean.setJobDataAsMap(map);
  return factoryBean; 
 } 
 
 /**
  * 創(chuàng)建觸發(fā)器工廠
  * @param jobDetail
  * @param cronExpression
  * @return
  */
 private static CronTriggerFactoryBean dialogStatusTrigger(JobDetail jobDetail, String cronExpression) { 
  CronTriggerFactoryBean factoryBean = new CronTriggerFactoryBean(); 
  factoryBean.setJobDetail(jobDetail);
  factoryBean.setCronExpression (cronExpression);
  return factoryBean; 
 } 
}

InvokingJobDetailDetailFactory對象：

public class InvokingJobDetailDetailFactory extends QuartzJobBean{
 // 計劃任務所在類 
 private String targetObject;
 // 具體需要執(zhí)行的計劃任務 
 private String targetMethod;
 private ApplicationContext ctx;
 @Override
 protected void executeInternal(JobExecutionContext context) throws JobExecutionException {
  try {
   Object otargetObject = ctx.getBean(targetObject);
   Method m = null; 
   try { 
    m = otargetObject.getClass().getMethod(targetMethod); 
    m.invoke(otargetObject); 
   } catch (SecurityException e) { 
    e.printStackTrace(); 
   } catch (NoSuchMethodException e) { 
    e.printStackTrace(); 
   } 
  } catch (Exception e) { 
   throw new JobExecutionException(e); 
  }
 }
 
 public void setApplicationContext(ApplicationContext applicationContext) { 
  this.ctx = applicationContext; 
 } 
 
 public void setTargetObject(String targetObject) { 
  this.targetObject = targetObject; 
 } 
 
 public void setTargetMethod(String targetMethod) { 
  this.targetMethod = targetMethod; 
 }
}

備注：set方法不能少，setApplicationContext中的applicationContext與factory.setApplicationContextSchedulerContextKey("applicationContext")填入的值有關，其原理由InvokingJobDetailDetailFactory父類中的BeanWrapper實現(xiàn)。

sql腳本：--

<em id="__mceDel">-- 表的結構 `qrtz_blob_triggers`
--
 
CREATE TABLE IF NOT EXISTS `qrtz_blob_triggers` (
 `SCHED_NAME` varchar(120) NOT NULL,
 `TRIGGER_NAME` varchar(120) NOT NULL,
 `TRIGGER_GROUP` varchar(120) NOT NULL,
 `BLOB_DATA` blob
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;
 
-- --------------------------------------------------------
 
--
-- 表的結構 `qrtz_calendars`
--
 
CREATE TABLE IF NOT EXISTS `qrtz_calendars` (
 `SCHED_NAME` varchar(120) NOT NULL,
 `CALENDAR_NAME` varchar(120) NOT NULL,
 `CALENDAR` blob NOT NULL
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;
 
-- --------------------------------------------------------
 
--
-- 表的結構 `qrtz_cron_triggers`
--
 
CREATE TABLE IF NOT EXISTS `qrtz_cron_triggers` (
 `SCHED_NAME` varchar(120) NOT NULL,
 `TRIGGER_NAME` varchar(120) NOT NULL,
 `TRIGGER_GROUP` varchar(120) NOT NULL,
 `CRON_EXPRESSION` varchar(120) NOT NULL,
 `TIME_ZONE_ID` varchar(80) DEFAULT NULL
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;
 
-- --------------------------------------------------------
 
--
-- 表的結構 `qrtz_fired_triggers`
--
 
CREATE TABLE IF NOT EXISTS `qrtz_fired_triggers` (
 `SCHED_NAME` varchar(120) NOT NULL,
 `ENTRY_ID` varchar(95) NOT NULL,
 `TRIGGER_NAME` varchar(120) NOT NULL,
 `TRIGGER_GROUP` varchar(120) NOT NULL,
 `INSTANCE_NAME` varchar(120) NOT NULL,
 `FIRED_TIME` bigint(13) NOT NULL,
 `SCHED_TIME` bigint(13) NOT NULL,
 `PRIORITY` int(11) NOT NULL,
 `STATE` varchar(16) NOT NULL,
 `JOB_NAME` varchar(120) DEFAULT NULL,
 `JOB_GROUP` varchar(120) DEFAULT NULL,
 `IS_NONCONCURRENT` varchar(1) DEFAULT NULL,
 `REQUESTS_RECOVERY` varchar(1) DEFAULT NULL
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;
 
-- --------------------------------------------------------
 
--
-- 表的結構 `qrtz_job_details`
--
 
CREATE TABLE IF NOT EXISTS `qrtz_job_details` (
 `SCHED_NAME` varchar(120) NOT NULL,
 `JOB_NAME` varchar(120) NOT NULL,
 `JOB_GROUP` varchar(120) NOT NULL,
 `DESCRIPTION` varchar(250) DEFAULT NULL,
 `JOB_CLASS_NAME` varchar(250) NOT NULL,
 `IS_DURABLE` varchar(1) NOT NULL,
 `IS_NONCONCURRENT` varchar(1) NOT NULL,
 `IS_UPDATE_DATA` varchar(1) NOT NULL,
 `REQUESTS_RECOVERY` varchar(1) NOT NULL,
 `JOB_DATA` blob
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;
 
-- --------------------------------------------------------
 
--
-- 表的結構 `qrtz_locks`
--
 
CREATE TABLE IF NOT EXISTS `qrtz_locks` (
 `SCHED_NAME` varchar(120) NOT NULL,
 `LOCK_NAME` varchar(40) NOT NULL
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;
 
-- --------------------------------------------------------
 
--
-- 表的結構 `qrtz_paused_trigger_grps`
--
 
CREATE TABLE IF NOT EXISTS `qrtz_paused_trigger_grps` (
 `SCHED_NAME` varchar(120) NOT NULL,
 `TRIGGER_GROUP` varchar(120) NOT NULL
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;
 
-- --------------------------------------------------------
 
--
-- 表的結構 `qrtz_scheduler_state`
--
 
CREATE TABLE IF NOT EXISTS `qrtz_scheduler_state` (
 `SCHED_NAME` varchar(120) NOT NULL,
 `INSTANCE_NAME` varchar(120) NOT NULL,
 `LAST_CHECKIN_TIME` bigint(13) NOT NULL,
 `CHECKIN_INTERVAL` bigint(13) NOT NULL
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;
 
-- --------------------------------------------------------
 
--
-- 表的結構 `qrtz_simple_triggers`
--
 
CREATE TABLE IF NOT EXISTS `qrtz_simple_triggers` (
 `SCHED_NAME` varchar(120) NOT NULL,
 `TRIGGER_NAME` varchar(120) NOT NULL,
 `TRIGGER_GROUP` varchar(120) NOT NULL,
 `REPEAT_COUNT` bigint(7) NOT NULL,
 `REPEAT_INTERVAL` bigint(12) NOT NULL,
 `TIMES_TRIGGERED` bigint(10) NOT NULL
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;
 
-- --------------------------------------------------------
 
--
-- 表的結構 `qrtz_simprop_triggers`
--
 
CREATE TABLE IF NOT EXISTS `qrtz_simprop_triggers` (
 `SCHED_NAME` varchar(120) NOT NULL,
 `TRIGGER_NAME` varchar(120) NOT NULL,
 `TRIGGER_GROUP` varchar(120) NOT NULL,
 `STR_PROP_1` varchar(512) DEFAULT NULL,
 `STR_PROP_2` varchar(512) DEFAULT NULL,
 `STR_PROP_3` varchar(512) DEFAULT NULL,
 `INT_PROP_1` int(11) DEFAULT NULL,
 `INT_PROP_2` int(11) DEFAULT NULL,
 `LONG_PROP_1` bigint(20) DEFAULT NULL,
 `LONG_PROP_2` bigint(20) DEFAULT NULL,
 `DEC_PROP_1` decimal(13,4) DEFAULT NULL,
 `DEC_PROP_2` decimal(13,4) DEFAULT NULL,
 `BOOL_PROP_1` varchar(1) DEFAULT NULL,
 `BOOL_PROP_2` varchar(1) DEFAULT NULL
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;
 
-- --------------------------------------------------------
 
--
-- 表的結構 `qrtz_triggers`
--
 
CREATE TABLE IF NOT EXISTS `qrtz_triggers` (
 `SCHED_NAME` varchar(120) NOT NULL,
 `TRIGGER_NAME` varchar(120) NOT NULL,
 `TRIGGER_GROUP` varchar(120) NOT NULL,
 `JOB_NAME` varchar(120) NOT NULL,
 `JOB_GROUP` varchar(120) NOT NULL,
 `DESCRIPTION` varchar(250) DEFAULT NULL,
 `NEXT_FIRE_TIME` bigint(13) DEFAULT NULL,
 `PREV_FIRE_TIME` bigint(13) DEFAULT NULL,
 `PRIORITY` int(11) DEFAULT NULL,
 `TRIGGER_STATE` varchar(16) NOT NULL,
 `TRIGGER_TYPE` varchar(8) NOT NULL,
 `START_TIME` bigint(13) NOT NULL,
 `END_TIME` bigint(13) DEFAULT NULL,
 `CALENDAR_NAME` varchar(200) DEFAULT NULL,
 `MISFIRE_INSTR` smallint(2) DEFAULT NULL,
 `JOB_DATA` blob
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;
 
--
-- Indexes for dumped tables
--
 
--
-- Indexes for table `qrtz_blob_triggers`
--
ALTER TABLE `qrtz_blob_triggers`
 ADD PRIMARY KEY (`SCHED_NAME`,`TRIGGER_NAME`,`TRIGGER_GROUP`),
 ADD KEY `SCHED_NAME` (`SCHED_NAME`,`TRIGGER_NAME`,`TRIGGER_GROUP`);
 
--
-- Indexes for table `qrtz_calendars`
--
ALTER TABLE `qrtz_calendars`
 ADD PRIMARY KEY (`SCHED_NAME`,`CALENDAR_NAME`);
 
--
-- Indexes for table `qrtz_cron_triggers`
--
ALTER TABLE `qrtz_cron_triggers`
 ADD PRIMARY KEY (`SCHED_NAME`,`TRIGGER_NAME`,`TRIGGER_GROUP`);
 
--
-- Indexes for table `qrtz_fired_triggers`
--
ALTER TABLE `qrtz_fired_triggers`
 ADD PRIMARY KEY (`SCHED_NAME`,`ENTRY_ID`),
 ADD KEY `IDX_QRTZ_FT_TRIG_INST_NAME` (`SCHED_NAME`,`INSTANCE_NAME`),
 ADD KEY `IDX_QRTZ_FT_INST_JOB_REQ_RCVRY` (`SCHED_NAME`,`INSTANCE_NAME`,`REQUESTS_RECOVERY`),
 ADD KEY `IDX_QRTZ_FT_J_G` (`SCHED_NAME`,`JOB_NAME`,`JOB_GROUP`),
 ADD KEY `IDX_QRTZ_FT_JG` (`SCHED_NAME`,`JOB_GROUP`),
 ADD KEY `IDX_QRTZ_FT_T_G` (`SCHED_NAME`,`TRIGGER_NAME`,`TRIGGER_GROUP`),
 ADD KEY `IDX_QRTZ_FT_TG` (`SCHED_NAME`,`TRIGGER_GROUP`);
 
--
-- Indexes for table `qrtz_job_details`
--
ALTER TABLE `qrtz_job_details`
 ADD PRIMARY KEY (`SCHED_NAME`,`JOB_NAME`,`JOB_GROUP`),
 ADD KEY `IDX_QRTZ_J_REQ_RECOVERY` (`SCHED_NAME`,`REQUESTS_RECOVERY`),
 ADD KEY `IDX_QRTZ_J_GRP` (`SCHED_NAME`,`JOB_GROUP`);
 
--
-- Indexes for table `qrtz_locks`
--
ALTER TABLE `qrtz_locks`
 ADD PRIMARY KEY (`SCHED_NAME`,`LOCK_NAME`);
 
--
-- Indexes for table `qrtz_paused_trigger_grps`
--
ALTER TABLE `qrtz_paused_trigger_grps`
 ADD PRIMARY KEY (`SCHED_NAME`,`TRIGGER_GROUP`);
 
--
-- Indexes for table `qrtz_scheduler_state`
--
ALTER TABLE `qrtz_scheduler_state`
 ADD PRIMARY KEY (`SCHED_NAME`,`INSTANCE_NAME`);
 
--
-- Indexes for table `qrtz_simple_triggers`
--
ALTER TABLE `qrtz_simple_triggers`
 ADD PRIMARY KEY (`SCHED_NAME`,`TRIGGER_NAME`,`TRIGGER_GROUP`);
 
--
-- Indexes for table `qrtz_simprop_triggers`
--
ALTER TABLE `qrtz_simprop_triggers`
 ADD PRIMARY KEY (`SCHED_NAME`,`TRIGGER_NAME`,`TRIGGER_GROUP`);
 
--
-- Indexes for table `qrtz_triggers`
--
ALTER TABLE `qrtz_triggers`
 ADD PRIMARY KEY (`SCHED_NAME`,`TRIGGER_NAME`,`TRIGGER_GROUP`),
 ADD KEY `IDX_QRTZ_T_J` (`SCHED_NAME`,`JOB_NAME`,`JOB_GROUP`),
 ADD KEY `IDX_QRTZ_T_JG` (`SCHED_NAME`,`JOB_GROUP`),
 ADD KEY `IDX_QRTZ_T_C` (`SCHED_NAME`,`CALENDAR_NAME`(191)),
 ADD KEY `IDX_QRTZ_T_G` (`SCHED_NAME`,`TRIGGER_GROUP`),
 ADD KEY `IDX_QRTZ_T_STATE` (`SCHED_NAME`,`TRIGGER_STATE`),
 ADD KEY `IDX_QRTZ_T_N_STATE` (`SCHED_NAME`,`TRIGGER_NAME`,`TRIGGER_GROUP`,`TRIGGER_STATE`),
 ADD KEY `IDX_QRTZ_T_N_G_STATE` (`SCHED_NAME`,`TRIGGER_GROUP`,`TRIGGER_STATE`),
 ADD KEY `IDX_QRTZ_T_NEXT_FIRE_TIME` (`SCHED_NAME`,`NEXT_FIRE_TIME`),
 ADD KEY `IDX_QRTZ_T_NFT_ST` (`SCHED_NAME`,`TRIGGER_STATE`,`NEXT_FIRE_TIME`),
 ADD KEY `IDX_QRTZ_T_NFT_MISFIRE` (`SCHED_NAME`,`MISFIRE_INSTR`,`NEXT_FIRE_TIME`),
 ADD KEY `IDX_QRTZ_T_NFT_ST_MISFIRE` (`SCHED_NAME`,`MISFIRE_INSTR`,`NEXT_FIRE_TIME`,`TRIGGER_STATE`),
 ADD KEY `IDX_QRTZ_T_NFT_ST_MISFIRE_GRP` (`SCHED_NAME`,`MISFIRE_INSTR`,`NEXT_FIRE_TIME`,`TRIGGER_GROUP`,`TRIGGER_STATE`);
 
--
-- 限制導出的表
--
 
--
-- 限制表 `qrtz_blob_triggers`
--
ALTER TABLE `qrtz_blob_triggers`
 ADD CONSTRAINT `qrtz_blob_triggers_ibfk_1` FOREIGN KEY (`SCHED_NAME`, `TRIGGER_NAME`, `TRIGGER_GROUP`) REFERENCES `qrtz_triggers` (`SCHED_NAME`, `TRIGGER_NAME`, `TRIGGER_GROUP`);
 
--
-- 限制表 `qrtz_cron_triggers`
--
ALTER TABLE `qrtz_cron_triggers`
 ADD CONSTRAINT `qrtz_cron_triggers_ibfk_1` FOREIGN KEY (`SCHED_NAME`, `TRIGGER_NAME`, `TRIGGER_GROUP`) REFERENCES `qrtz_triggers` (`SCHED_NAME`, `TRIGGER_NAME`, `TRIGGER_GROUP`);
 
--
-- 限制表 `qrtz_simple_triggers`
--
ALTER TABLE `qrtz_simple_triggers`
 ADD CONSTRAINT `qrtz_simple_triggers_ibfk_1` FOREIGN KEY (`SCHED_NAME`, `TRIGGER_NAME`, `TRIGGER_GROUP`) REFERENCES `qrtz_triggers` (`SCHED_NAME`, `TRIGGER_NAME`, `TRIGGER_GROUP`);
 
--
-- 限制表 `qrtz_simprop_triggers`
--
ALTER TABLE `qrtz_simprop_triggers`
 ADD CONSTRAINT `qrtz_simprop_triggers_ibfk_1` FOREIGN KEY (`SCHED_NAME`, `TRIGGER_NAME`, `TRIGGER_GROUP`) REFERENCES `qrtz_triggers` (`SCHED_NAME`, `TRIGGER_NAME`, `TRIGGER_GROUP`);
 
--
-- 限制表 `qrtz_triggers`
--
ALTER TABLE `qrtz_triggers`
 ADD CONSTRAINT `qrtz_triggers_ibfk_1` FOREIGN KEY (`SCHED_NAME`, `JOB_NAME`, `JOB_GROUP`) REFERENCES `qrtz_job_details` (`SCHED_NAME`, `JOB_NAME`, `JOB_GROUP`);<br><br><br></em>

quartz集群實現(xiàn)原理，利用數據庫記錄job行為，并通過鎖機制，使job在同一次中僅運行一次。

JobBean示例

//需要交由spring管理
@Service("dialogJob")
public class DialogJob {
 @Autowired
 private QuestionService questionService;
// 方法名在quartz定義
 public void execute() throws Exception{
  //具體執(zhí)行業(yè)務 
　　　　questionService.XXXXX();
 } 
}

總結

以上就是這篇文章的全部內容了，希望本文的內容對大家的學習或者工作具有一定的參考學習價值，如果有疑問大家可以留言交流，謝謝大家對腳本之家的支持。

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