一、背景
SSM项目中要用到定时器，初期使用Timer，后来用spring 的schedule，都比较简单，所以功能比较单一而且他们不能动态的配置时间。后来就研究quartz，准备整合到项目中。Quartz 是一个完全由 Java 编写的开源作业调度框架，为在 Java 应用程序中进行作业调度提供了简单却强大的机制。
二、quartz的官网下载压缩包
最好下载稳定版，我这里下载的是2.3.0，quartz下载地址。
三、建立数据库，导入sql脚本
sql脚本的位置：quartz-2.3.0-distributionquartz-2.3.0-SNAPSHOTsrcorgquartzimpljdbcjobstore ables_mysql_innodb.sql（我项目中使用的mysql），这里要注意，不同类型的数据库要用不同的数据库脚本；
四、Maven中导入依赖
这里quartz的版本必须与数据库脚本的版本一致不然会报错。因为quartz的每个版本数据库改动挺大的，假如这里配置的2.3.0，而你用2.1.7的sql脚本，肯定会出错。所以要一一匹配。
<dependency> <groupId>org.quartz-scheduler</groupId> <artifactId>quartz</artifactId> <version>2.3.0</version> </dependency> <dependency> <groupId>org.quartz-scheduler</groupId> <artifactId>quartz-jobs</artifactId> <version>2.3.0</version> </dependency>
五、配置文件
quartz的持久化有两种，一种是RAM，一种是JDBC。
RAMJobStore是使用最简单的JobStore，它也是性能最高的（在CPU时间方面）。RAMJobStore以其明显的方式获取其名称：它将其所有数据保存在RAM中。这就是为什么它是闪电般快的，也是为什么这么简单的配置。缺点是当您的应用程序结束（或崩溃）时，所有调度信息都将丢失 - 这意味着RAMJobStore无法履行作业和triggers上的“非易失性”设置。对于某些应用程序，这是可以接受的 - 甚至是所需的行为，但对于其他应用程序，这可能是灾难性的。
JDBCJobStore也被恰当地命名 - 它通过JDBC将其所有数据保存在数据库中。因此，配置比RAMJobStore要复杂一点，而且也不是那么快。但是，性能下降并不是很糟糕，特别是如果您在主键上构建具有索引的数据库表。在相当现代的一套具有体面的LAN（在调度程序和数据库之间）的机器上，检索和更新触发triggers的时间通常将小于10毫秒。
本次整合采用的是JDBCStore。如果你采用RAMStore，你只需要将org.quartz.jobStore.class:org.quartz.impl.jdbcjobstore.JobStoreTX注释掉，把Configure Datasources标签中的内容注释掉。
# Default Properties file for use by StdSchedulerFactory # to create a Quartz Scheduler Instance, if a different # properties file is not explicitly specified. # #============================================================================ # Configure Main Scheduler Properties #============================================================================ org.quartz.scheduler.instanceName: quartzScheduler org.quartz.scheduler.instanceId = AUTO org.quartz.scheduler.rmi.export: false org.quartz.scheduler.rmi.proxy: false org.quartz.scheduler.wrapJobExecutionInUserTransaction: false #============================================================================ # Configure ThreadPool #============================================================================ org.quartz.threadPool.class: org.quartz.simpl.SimpleThreadPool org.quartz.threadPool.threadCount: 2 org.quartz.threadPool.threadPriority: 5 org.quartz.threadPool.threadsInheritContextClassLoaderOfInitializingThread: true org.quartz.jobStore.misfireThreshold: 60000 #============================================================================ # Configure JobStore #============================================================================ #default config #org.quartz.jobStore.class: org.quartz.simpl.RAMJobStore #持久化配置 org.quartz.jobStore.class:org.quartz.impl.jdbcjobstore.JobStoreTX org.quartz.jobStore.driverDelegateClass:org.quartz.impl.jdbcjobstore.StdJDBCDelegate org.quartz.jobStore.useProperties:true #============================================================================ #havent cluster spring #============================================================================ org.quartz.jobStore.isClustered = false #数据库表前缀 org.quartz.jobStore.tablePrefix:qrtz_ #============================================================================ # Configure Datasources，如果在spring的配置文件中，指定dataSource，那么就是用的spring中已经配置好的数据源，即被覆盖。如果没有指定dataSource,则使用的是此处配置的数据库参数 #============================================================================ org.quartz.jobStore.dataSource:qzDS org.quartz.dataSource.qzDS.driver:com.mysql.jdbc.Driver org.quartz.dataSource.qzDS.URL:jdbc:mysql://localhost:3306/magicmedecg org.quartz.dataSource.qzDS.user:root org.quartz.dataSource.qzDS.password:root
六、spring与quartz的整合配置
<?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:mvc="http://www.springframework.org/schema/mvc" xmlns:context="http://www.springframework.org/schema/context" xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx" xmlns:task="http://www.springframework.org/schema/task" xmlns:websocket="http://www.springframework.org/schema/websocket" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.0.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.0.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.0.xsd http://www.springframework.org/schema/websocket http://www.springframework.org/schema/websocket/spring-websocket.xsd http://www.springframework.org/schema/task http://www.springframework.org/schema/task/spring-task.xsd"> <!-- quartz --> <bean id="scheduleReportFactory" class="org.springframework.scheduling.quartz.SchedulerFactoryBean">
<!--这里使用的是spring中已经配置好的数据源；当然如果不配置则使用quartz.properties中的数据库配置。-->
<property name="dataSource"> <ref bean="dataSource"/> </property> <property name="startupDelay" value="100"/> <property name="applicationContextSchedulerContextKey" value="applicationContextKey"/> <property name="configLocation" value="classpath:quartz.properties"/> </bean> </beans>
七、定义Job类
这里的@Setter是生成类的属性的setter方法，这个注解不是quartz的，而是lombok的。@sertter = 属性的setter方法。
@Setter
public class RemindUserJob implements Job {
private String appuserId;
private String orderSn;
private static int count = 0;
@Override
public void execute(JobExecutionContext jobExecutionContext) throws JobExecutionException {
JobDataMap jobDataMap = jobExecutionContext.getJobDetail().getJobDataMap();
System.out.println("我执行了，时间是" + System.currentTimeMillis() + ",count = " + count + ",appuserId = " + appuserId + ",orderSn=" + orderSn);
count++;
}
}
八、创建任务
@RequestMapping("test04")
@ResponseBody
public void test04() throws Exception {
// 创建scheduler
Scheduler scheduler = StdSchedulerFactory.getDefaultScheduler();
// 创建JobDetail
JobDetail jobDetail = newJob(RemindUserJob.class)
.withIdentity("job1", "group1")
.usingJobData("appuserId", "asdfghjkl")
.usingJobData("orderSn", "0as8fg")
.build();
// 指定时间触发，每隔2s执行一次，重复20次
Trigger trigger2 = newTrigger()
.withIdentity("trigger2", "group1")
.startAt(new Date())
.withSchedule(simpleSchedule()
.withIntervalInSeconds(2)
.withRepeatCount(20))
.build();
scheduler.scheduleJob(jobDetail,trigger2);
scheduler.start();
}
九、运行效果
[2019-03-25 15:11:08,149] [org.quartz.impl.StdSchedulerFactory] : Quartz scheduler 'quartzScheduler' initialized from default resource file in Quartz package: 'quartz.properties'
[2019-03-25 15:11:08,150] [org.quartz.impl.StdSchedulerFactory] : Quartz scheduler version: 2.3.0
[2019-03-25 15:11:08,255] [com.mchange.v2.c3p0.impl.AbstractPoolBackedDataSource] : Initializing c3p0 pool... com.mchange.v2.c3p0.ComboPooledDataSource [ acquireIncrement -> 3, acquireRetryAttempts -> 30, acquireRetryDelay -> 1000, autoCommitOnClose -> false, automaticTestTable -> null, breakAfterAcquireFailure -> false, checkoutTimeout -> 0, connectionCustomizerClassName -> null, connectionTesterClassName -> com.mchange.v2.c3p0.impl.DefaultConnectionTester, contextClassLoaderSource -> caller, dataSourceName -> 1hge15ka11duunroghgkbm|aa25642, debugUnreturnedConnectionStackTraces -> false, description -> null, driverClass -> com.mysql.jdbc.Driver, extensions -> {}, factoryClassLocation -> null, forceIgnoreUnresolvedTransactions -> false, forceSynchronousCheckins -> false, forceUseNamedDriverClass -> false, identityToken -> 1hge15ka11duunroghgkbm|aa25642, idleConnectionTestPeriod -> 0, initialPoolSize -> 3, jdbcUrl -> jdbc:mysql://localhost:3306/magicmedecg, maxAdministrativeTaskTime -> 0, maxConnectionAge -> 0, maxIdleTime -> 0, maxIdleTimeExcessConnections -> 0, maxPoolSize -> 10, maxStatements -> 0, maxStatementsPerConnection -> 120, minPoolSize -> 1, numHelperThreads -> 3, preferredTestQuery -> null, privilegeSpawnedThreads -> false, properties -> {user=******, password=******}, propertyCycle -> 0, statementCacheNumDeferredCloseThreads -> 0, testConnectionOnCheckin -> false, testConnectionOnCheckout -> false, unreturnedConnectionTimeout -> 0, userOverrides -> {}, usesTraditionalReflectiveProxies -> false ]
[2019-03-25 15:11:08,525] [org.quartz.impl.jdbcjobstore.JobStoreTX] : Freed 0 triggers from 'acquired' / 'blocked' state.
[2019-03-25 15:11:08,530] [org.quartz.impl.jdbcjobstore.JobStoreTX] : Recovering 0 jobs that were in-progress at the time of the last shut-down.
[2019-03-25 15:11:08,530] [org.quartz.impl.jdbcjobstore.JobStoreTX] : Recovery complete.
[2019-03-25 15:11:08,532] [org.quartz.impl.jdbcjobstore.JobStoreTX] : Removed 0 'complete' triggers.
[2019-03-25 15:11:08,534] [org.quartz.impl.jdbcjobstore.JobStoreTX] : Removed 0 stale fired job entries.
[2019-03-25 15:11:08,535] [org.quartz.core.QuartzScheduler] : Scheduler quartzScheduler_$_NON_CLUSTERED started.
我执行了，时间是1553497868902,count = 0,appuserId = asdfghjkl,orderSn=0as8fg
我执行了，时间是1553497870183,count = 1,appuserId = asdfghjkl,orderSn=0as8fg
我执行了，时间是1553497872178,count = 2,appuserId = asdfghjkl,orderSn=0as8fg
我执行了，时间是1553497874183,count = 3,appuserId = asdfghjkl,orderSn=0as8fg
我执行了，时间是1553497876179,count = 4,appuserId = asdfghjkl,orderSn=0as8fg
我执行了，时间是1553497878177,count = 5,appuserId = asdfghjkl,orderSn=0as8fg
我执行了，时间是1553497880178,count = 6,appuserId = asdfghjkl,orderSn=0as8fg
我执行了，时间是1553497882180,count = 7,appuserId = asdfghjkl,orderSn=0as8fg
我执行了，时间是1553497884183,count = 8,appuserId = asdfghjkl,orderSn=0as8fg
我执行了，时间是1553497886184,count = 9,appuserId = asdfghjkl,orderSn=0as8fg
我执行了，时间是1553497888176,count = 10,appuserId = asdfghjkl,orderSn=0as8fg
我执行了，时间是1553497890175,count = 11,appuserId = asdfghjkl,orderSn=0as8fg
我执行了，时间是1553497892177,count = 12,appuserId = asdfghjkl,orderSn=0as8fg
我执行了，时间是1553497894178,count = 13,appuserId = asdfghjkl,orderSn=0as8fg
我执行了，时间是1553497896176,count = 14,appuserId = asdfghjkl,orderSn=0as8fg
我执行了，时间是1553497898190,count = 15,appuserId = asdfghjkl,orderSn=0as8fg
我执行了，时间是1553497900381,count = 16,appuserId = asdfghjkl,orderSn=0as8fg
我执行了，时间是1553497902176,count = 17,appuserId = asdfghjkl,orderSn=0as8fg
我执行了，时间是1553497904205,count = 18,appuserId = asdfghjkl,orderSn=0as8fg
我执行了，时间是1553497906175,count = 19,appuserId = asdfghjkl,orderSn=0as8fg
我执行了，时间是1553497908177,count = 20,appuserId = asdfghjkl,orderSn=0as8fg
注：整合过程中可能遇到的异常：spring整合quartz异常：org.quartz.JobPersistenceException: Couldn't clean volatile data: Unknown column 'IS_VOLATILE' in 'where clause'