在進(jìn)入正文前,我想把所有java可以實(shí)現(xiàn)的定時(shí)任務(wù)介紹一下韧涨,其實(shí)這個(gè)也是底層實(shí)現(xiàn)思路。
本教程大概目錄:
- 線程等待實(shí)現(xiàn)定時(shí)任務(wù)
- 用Timer實(shí)現(xiàn)定時(shí)任務(wù)
- 用ScheduledExecutorService實(shí)現(xiàn)定時(shí)任務(wù)
- Quartz 定時(shí)任務(wù)框架單機(jī)應(yīng)用
- spingboot2 整合 Scheduled
- spingboot2 整合 Quartz框架持久化定時(shí)任務(wù)
1. 線程等待實(shí)現(xiàn)定時(shí)任務(wù)
package com.fantj.myScheduled;
/**
* Created by Fant.J.
*/
public class Test {
public static void main(String[] args) {
Thread thread = new Thread(()->{
while (true) {
System.out.println("假設(shè)我是個(gè)定時(shí)任務(wù)");
try {
Thread.sleep(1000 * 10); //線程休息十秒
} catch (InterruptedException e) {
e.printStackTrace();
}
}
});
}
}
大家看代碼也能看出來(lái)伦仍,如果任務(wù)復(fù)雜時(shí),是相當(dāng)?shù)穆闊┖苎螅疫€存在內(nèi)存泄露風(fēng)險(xiǎn)呢铆,而且是一發(fā)不可收拾(不可控)。
下面看一個(gè)相對(duì)簡(jiǎn)單的蹲缠。
2. Timer
package com.fantj.myScheduled;
import java.util.Timer;
import java.util.TimerTask;
/**
* Created by Fant.J.
*/
public class Test {
public static void main(String[] args) {
TimerTask task = new TimerTask() {
@Override
public void run() {
System.out.println("TimerTask is called!");
}
};
Timer timer = new Timer();
/*
* 參數(shù):1棺克、任務(wù)體 2、延時(shí)時(shí)間(可以指定執(zhí)行日期)3线定、任務(wù)執(zhí)行間隔時(shí)間
*/
timer.schedule(task, 0, 1000 * 3);
timer.scheduleAtFixedRate(task, 0, 1000 * 3);
}
}
注意上面timer調(diào)用的兩個(gè)方法:
1娜谊、schedule,如果第一次執(zhí)行被延時(shí)斤讥,隨后的任務(wù)執(zhí)行時(shí)間將以上一次任務(wù)實(shí)際執(zhí)行完成的時(shí)間為準(zhǔn)
2纱皆、scheduleAtFixedRate,如果第一次執(zhí)行被延時(shí)芭商,隨后的任務(wù)執(zhí)行時(shí)間將以上一次任務(wù)開(kāi)始執(zhí)行的時(shí)間為準(zhǔn)(需考慮同步)
如果讓我粗俗的講派草,第一個(gè)是等任務(wù)進(jìn)行完了才開(kāi)始計(jì)時(shí),第二個(gè)是任務(wù)開(kāi)始運(yùn)行的時(shí)候就計(jì)時(shí)铛楣。
那我們稍微瞄一眼 Timer底層實(shí)現(xiàn)
public void schedule(TimerTask task, Date firstTime, long period) {
if (period <= 0)
throw new IllegalArgumentException("Non-positive period.");
sched(task, firstTime.getTime(), -period);
}
然后看看TimerTask類
public abstract class TimerTask implements Runnable {
public abstract void run();
...
}
大概也能看出來(lái)近迁,也是線程實(shí)現(xiàn)。
Timer也有缺點(diǎn):
多線程并行處理定時(shí)任務(wù)時(shí)簸州,Timer運(yùn)行多個(gè)TimeTask時(shí)鉴竭,只要其中之一沒(méi)有捕獲拋出的異常,其它任務(wù)便會(huì)自動(dòng)終止運(yùn)行岸浑,使用ScheduledExecutorService則沒(méi)有這個(gè)問(wèn)題搏存。
3. 那我們就來(lái)研究ScheduledExecutorService
package com.fantj.myScheduled;
/**
* Created by Fant.J.
*/
public class Test {
public static void main(String[] args) {
Runnable runnable = new Runnable() {
@Override
public void run() {
System.out.println("ScheduledExecutorService Task is called!");
}
};
ScheduledExecutorService service = Executors.newSingleThreadScheduledExecutor();
// 參數(shù):1、任務(wù)體 2矢洲、首次執(zhí)行的延時(shí)時(shí)間
// 3璧眠、任務(wù)執(zhí)行間隔 4、間隔時(shí)間單位
service.scheduleAtFixedRate(runnable, 0, 3, TimeUnit.SECONDS);
}
}
這個(gè)读虏。责静。就不多說(shuō)實(shí)現(xiàn)原理了Executors線程池都出現(xiàn)了。
Quartz 定時(shí)任務(wù)框架
為什么會(huì)有定時(shí)任務(wù)框架呢掘譬,大家仔細(xì)觀察前面的實(shí)現(xiàn)案例泰演,沒(méi)有一個(gè)定時(shí)任務(wù)是可控的,這對(duì)開(kāi)發(fā)者來(lái)說(shuō)特別不友好葱轩。Quartz就比較nb了睦焕,我?guī)Т蠹疑晕⒖纯此囊徊糠址椒ǎ?br> 我先大概介紹下Quartz工作原理藐握,JobDetail是寫定時(shí)任務(wù)邏輯,Trigger是一個(gè)觸發(fā)器垃喊,用來(lái)定義cron和執(zhí)行次數(shù)等猾普。
String getSchedulerName() throws SchedulerException;
String getSchedulerInstanceId() throws SchedulerException;
SchedulerContext getContext() throws SchedulerException;
void start() throws SchedulerException;
void startDelayed(int var1) throws SchedulerException;
boolean isStarted() throws SchedulerException;
void standby() throws SchedulerException;
boolean isInStandbyMode() throws SchedulerException;
void shutdown() throws SchedulerException;
void shutdown(boolean var1) throws SchedulerException;
boolean isShutdown() throws SchedulerException;
SchedulerMetaData getMetaData() throws SchedulerException;
List<JobExecutionContext> getCurrentlyExecutingJobs() throws SchedulerException;
void setJobFactory(JobFactory var1) throws SchedulerException;
ListenerManager getListenerManager() throws SchedulerException;
Date scheduleJob(JobDetail var1, Trigger var2) throws SchedulerException;
Date scheduleJob(Trigger var1) throws SchedulerException;
void scheduleJobs(Map<JobDetail, Set<? extends Trigger>> var1, boolean var2) throws SchedulerException;
void scheduleJob(JobDetail var1, Set<? extends Trigger> var2, boolean var3) throws SchedulerException;
boolean unscheduleJob(TriggerKey var1) throws SchedulerException;
boolean unscheduleJobs(List<TriggerKey> var1) throws SchedulerException;
Date rescheduleJob(TriggerKey var1, Trigger var2) throws SchedulerException;
void addJob(JobDetail var1, boolean var2) throws SchedulerException;
void addJob(JobDetail var1, boolean var2, boolean var3) throws SchedulerException;
boolean deleteJob(JobKey var1) throws SchedulerException;
boolean deleteJobs(List<JobKey> var1) throws SchedulerException;
void triggerJob(JobKey var1) throws SchedulerException;
void triggerJob(JobKey var1, JobDataMap var2) throws SchedulerException;
void pauseJob(JobKey var1) throws SchedulerException;
void pauseJobs(GroupMatcher<JobKey> var1) throws SchedulerException;
void pauseTrigger(TriggerKey var1) throws SchedulerException;
void pauseTriggers(GroupMatcher<TriggerKey> var1) throws SchedulerException;
void resumeJob(JobKey var1) throws SchedulerException;
void resumeJobs(GroupMatcher<JobKey> var1) throws SchedulerException;
void resumeTrigger(TriggerKey var1) throws SchedulerException;
void resumeTriggers(GroupMatcher<TriggerKey> var1) throws SchedulerException;
void pauseAll() throws SchedulerException;
void resumeAll() throws SchedulerException;
List<String> getJobGroupNames() throws SchedulerException;
Set<JobKey> getJobKeys(GroupMatcher<JobKey> var1) throws SchedulerException;
List<? extends Trigger> getTriggersOfJob(JobKey var1) throws SchedulerException;
List<String> getTriggerGroupNames() throws SchedulerException;
Set<TriggerKey> getTriggerKeys(GroupMatcher<TriggerKey> var1) throws SchedulerException;
Set<String> getPausedTriggerGroups() throws SchedulerException;
JobDetail getJobDetail(JobKey var1) throws SchedulerException;
TriggerState getTriggerState(TriggerKey var1) throws SchedulerException;
void resetTriggerFromErrorState(TriggerKey var1) throws SchedulerException;
boolean interrupt(String var1) throws UnableToInterruptJobException;
boolean checkExists(JobKey var1) throws SchedulerException;
可以看到,基本上對(duì)定時(shí)任務(wù)的控制可以說(shuō)是很全了本谜。包括增刪改查等初家。
下面是個(gè)實(shí)例,當(dāng)然乌助,你需要下載必要的依賴jar溜在,這個(gè)可以自行百度下載一下,不做重點(diǎn)解釋他托。
package com.fantj.myScheduled;
/**
* Created by Fant.J.
*/
public class Test {
public static void main(String[] args) {
try {
Scheduler scheduler = StdSchedulerFactory.getDefaultScheduler();
scheduler.start();
JobDetail job = JobBuilder.newJob(Job.class)
.withIdentity("job", "group").build();
// 休眠時(shí)長(zhǎng)可指定時(shí)間單位掖肋,此處使用秒作為單位(withIntervalInSeconds)
SimpleTrigger trigger = TriggerBuilder.newTrigger()
.withIdentity("trigger", "group").startNow()
.withSchedule(simpleSchedule().withIntervalInSeconds(3).repeatForever())
.build();
scheduler.scheduleJob(job, trigger);
// scheduler.shutdown();
} catch (SchedulerException se) {
se.printStackTrace();
}
}
}
class Job implements org.quartz.Job {
@Override
public void execute(JobExecutionContext context) throws JobExecutionException {
System.out.println("Quartz task is called!");
}
}
spingboot2 整合 Scheduled
SpringBoot內(nèi)置了定時(shí)任務(wù)Scheduled,操作可謂特別簡(jiǎn)單赏参。
正常引入spring-boot-starter-web
依賴包即可實(shí)現(xiàn)志笼。
Scheduled 第一步
再啟動(dòng)類上添加注解@EnableScheduling
package com.fantj;
@SpringBootApplication
@MapperScan("com.fantj.mapper")
@EnableScheduling //啟動(dòng)定時(shí)任務(wù)
public class MybatisApplication {
public static void main(String[] args) {
SpringApplication.run(MybatisApplication.class, args);
}
}
Scheduled 第二步
寫Task。即定時(shí)任務(wù)把篓。
package com.fantj.myScheduled;
/**
* scheduled 定時(shí)任務(wù)類
* Created by Fant.J.
*/
@Component
public class Task {
@Scheduled(cron = "5 0 0 * * ?")
public void scheduledTask1(){
System.out.println("scheduledTask method run..");
}
@Scheduled(initialDelay = 1000 * 10,fixedDelay = 1000 * 5)
public void scheduledTask2(){
System.out.println("scheduledTask method run..");
}
@Scheduled(initialDelay = 1000 * 10,fixedDelay = 1000 * 5)
public void test() throws Exception {
for (int i = 0;i<20;i++){
new MailSender()
.title("FantJ給你發(fā)送的郵件")
.content("嘻嘻")
.contentType(MailContentTypeEnum.TEXT)
.targets(new ArrayList<String>(){{
add("xxxxxx@qq.com");
}})
.send();
System.out.println("第"+i+"次發(fā)送成功!");
}
}
}
第三個(gè)方法是我寫的發(fā)郵件的一個(gè)接口纫溃。可以參考我的一篇文章Java 發(fā)送qq郵件
我介紹下@Scheduled
注解的三(四)個(gè)屬性:
cron: 懂點(diǎn)linux的都知道韧掩,沒(méi)聽(tīng)說(shuō)過(guò)的可以自己百度一下紊浩,不難。
fixedRate和fixedDelay: 這和Timer的兩個(gè)方法(rate和delay)很相似揍很,如果讓我粗俗的講郎楼,第一個(gè)是任務(wù)開(kāi)始運(yùn)行的時(shí)候就計(jì)時(shí),第二個(gè)是等任務(wù)進(jìn)行完了才開(kāi)始計(jì)時(shí)窒悔。
initialDelay:該屬性的作用是 設(shè)置第一次執(zhí)行延遲時(shí)間 。需要配合fixedDelay敌买、fixedRate简珠、crom來(lái)使用。
新問(wèn)題的思考
雖然上面的方式一直在改進(jìn)虹钮,但是試想一種情況聋庵,如果正在執(zhí)行定時(shí)任務(wù)的服務(wù)器掛掉,那該如何去尋找它之前執(zhí)行了多少次呢芙粱。如果我們把定時(shí)任務(wù)持久化到數(shù)據(jù)庫(kù)祭玉,像維護(hù)普通邏輯數(shù)據(jù)那樣維護(hù)任務(wù),就會(huì)避免項(xiàng)目中遇到的種種的特殊情況春畔。
spingboot2 整合 Quartz框架持久化定時(shí)任務(wù)
提前聲明啊脱货,很麻煩岛都,因?yàn)樾枰尤雐oc管理(有部分注釋,可嘗試看懂)振峻,還需要?jiǎng)?chuàng)建quartz需要讓我們創(chuàng)建的數(shù)據(jù)表臼疫。
之后就像玩單機(jī)(見(jiàn)上文:Quartz 定時(shí)任務(wù)框架單機(jī)應(yīng)用)一樣,玩quartz了扣孟。
1. 導(dǎo)入依賴
<dependency>
<groupId>org.quartz-scheduler</groupId>
<artifactId>quartz</artifactId>
</dependency>
<dependency>
<groupId>org.quartz-scheduler</groupId>
<artifactId>quartz-jobs</artifactId>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context-support</artifactId>
</dependency>
提示烫堤,本項(xiàng)目是基于springboot2整合mybatic項(xiàng)目下:http://www.reibang.com/p/c15094bd1965
2. Quartz 注入Spring IOC配置
QuartzConfiguration.java
package com.fantj.quartz;
/**
* quartz定時(shí)任務(wù)配置
* Created by Fant.J.
*/
@Configuration
@EnableScheduling
public class QuartzConfiguration
{
/**
* 繼承org.springframework.scheduling.quartz.SpringBeanJobFactory
* 實(shí)現(xiàn)任務(wù)實(shí)例化方式
*/
public static class AutowiringSpringBeanJobFactory extends SpringBeanJobFactory implements
ApplicationContextAware {
private transient AutowireCapableBeanFactory beanFactory;
@Override
public void setApplicationContext(final ApplicationContext context) {
beanFactory = context.getAutowireCapableBeanFactory();
}
/**
* 將job實(shí)例交給spring ioc托管
* 我們?cè)趈ob實(shí)例實(shí)現(xiàn)類內(nèi)可以直接使用spring注入的調(diào)用被spring ioc管理的實(shí)例
* @param bundle
* @return
* @throws Exception
*/
@Override
protected Object createJobInstance(final TriggerFiredBundle bundle) throws Exception {
final Object job = super.createJobInstance(bundle);
/**
* 將job實(shí)例交付給spring ioc
*/
beanFactory.autowireBean(job);
return job;
}
}
/**
* 配置任務(wù)工廠實(shí)例
* @param applicationContext spring上下文實(shí)例
* @return
*/
@Bean
public JobFactory jobFactory(ApplicationContext applicationContext)
{
/**
* 采用自定義任務(wù)工廠 整合spring實(shí)例來(lái)完成構(gòu)建任務(wù)
* see {@link AutowiringSpringBeanJobFactory}
*/
AutowiringSpringBeanJobFactory jobFactory = new AutowiringSpringBeanJobFactory();
jobFactory.setApplicationContext(applicationContext);
return jobFactory;
}
/**
* 配置任務(wù)調(diào)度器
* 使用項(xiàng)目數(shù)據(jù)源作為quartz數(shù)據(jù)源
* @param jobFactory 自定義配置任務(wù)工廠
* @param dataSource 數(shù)據(jù)源實(shí)例
* @return
* @throws Exception
*/
@Bean(destroyMethod = "destroy",autowire = Autowire.NO)
public SchedulerFactoryBean schedulerFactoryBean(JobFactory jobFactory, DataSource dataSource) throws Exception
{
SchedulerFactoryBean schedulerFactoryBean = new SchedulerFactoryBean();
//將spring管理job自定義工廠交由調(diào)度器維護(hù)
schedulerFactoryBean.setJobFactory(jobFactory);
//設(shè)置覆蓋已存在的任務(wù)
schedulerFactoryBean.setOverwriteExistingJobs(true);
//項(xiàng)目啟動(dòng)完成后,等待2秒后開(kāi)始執(zhí)行調(diào)度器初始化
schedulerFactoryBean.setStartupDelay(2);
//設(shè)置調(diào)度器自動(dòng)運(yùn)行
schedulerFactoryBean.setAutoStartup(true);
//設(shè)置數(shù)據(jù)源凤价,使用與項(xiàng)目統(tǒng)一數(shù)據(jù)源
schedulerFactoryBean.setDataSource(dataSource);
//設(shè)置上下文spring bean name
schedulerFactoryBean.setApplicationContextSchedulerContextKey("applicationContext");
//設(shè)置配置文件位置
schedulerFactoryBean.setConfigLocation(new ClassPathResource("/quartz.properties"));
return schedulerFactoryBean;
}
}
看代碼倒數(shù)第二行鸽斟,需要一個(gè)配置文件,那么...
quartz.properties配置
#調(diào)度器實(shí)例名稱
org.quartz.scheduler.instanceName = quartzScheduler
#調(diào)度器實(shí)例編號(hào)自動(dòng)生成
org.quartz.scheduler.instanceId = AUTO
#持久化方式配置
org.quartz.jobStore.class = org.quartz.impl.jdbcjobstore.JobStoreTX
#持久化方式配置數(shù)據(jù)驅(qū)動(dòng)利诺,MySQL數(shù)據(jù)庫(kù)
org.quartz.jobStore.driverDelegateClass = org.quartz.impl.jdbcjobstore.StdJDBCDelegate
#quartz相關(guān)數(shù)據(jù)表前綴名
org.quartz.jobStore.tablePrefix = QRTZ_
#開(kāi)啟分布式部署
org.quartz.jobStore.isClustered = true
#配置是否使用
org.quartz.jobStore.useProperties = false
#分布式節(jié)點(diǎn)有效性檢查時(shí)間間隔富蓄,單位:毫秒
org.quartz.jobStore.clusterCheckinInterval = 20000
#線程池實(shí)現(xiàn)類
org.quartz.threadPool.class = org.quartz.simpl.SimpleThreadPool
#執(zhí)行最大并發(fā)線程數(shù)量
org.quartz.threadPool.threadCount = 10
#線程優(yōu)先級(jí)
org.quartz.threadPool.threadPriority = 5
#配置為守護(hù)線程,設(shè)置后任務(wù)將不會(huì)執(zhí)行
#org.quartz.threadPool.makeThreadsDaemons=true
#配置是否啟動(dòng)自動(dòng)加載數(shù)據(jù)庫(kù)內(nèi)的定時(shí)任務(wù)立轧,默認(rèn)true
org.quartz.threadPool.threadsInheritContextClassLoaderOfInitializingThread = true
創(chuàng)建數(shù)據(jù)表
說(shuō)出來(lái)你可能不信格粪,它需要十一個(gè)數(shù)據(jù)表的支持。
#
# In your Quartz properties file, you'll need to set
# org.quartz.jobStore.driverDelegateClass = org.quartz.impl.jdbcjobstore.StdJDBCDelegate
#
#
# By: Ron Cordell - roncordell
# I didn't see this anywhere, so I thought I'd post it here. This is the script from Quartz to create the tables in a MySQL database, modified to use INNODB instead of MYISAM.
DROP TABLE IF EXISTS QRTZ_FIRED_TRIGGERS;
DROP TABLE IF EXISTS QRTZ_PAUSED_TRIGGER_GRPS;
DROP TABLE IF EXISTS QRTZ_SCHEDULER_STATE;
DROP TABLE IF EXISTS QRTZ_LOCKS;
DROP TABLE IF EXISTS QRTZ_SIMPLE_TRIGGERS;
DROP TABLE IF EXISTS QRTZ_SIMPROP_TRIGGERS;
DROP TABLE IF EXISTS QRTZ_CRON_TRIGGERS;
DROP TABLE IF EXISTS QRTZ_BLOB_TRIGGERS;
DROP TABLE IF EXISTS QRTZ_TRIGGERS;
DROP TABLE IF EXISTS QRTZ_JOB_DETAILS;
DROP TABLE IF EXISTS QRTZ_CALENDARS;
CREATE TABLE QRTZ_JOB_DETAILS(
SCHED_NAME VARCHAR(120) NOT NULL,
JOB_NAME VARCHAR(200) NOT NULL,
JOB_GROUP VARCHAR(200) NOT NULL,
DESCRIPTION VARCHAR(250) 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 NULL,
PRIMARY KEY (SCHED_NAME,JOB_NAME,JOB_GROUP))
ENGINE=InnoDB;
CREATE TABLE QRTZ_TRIGGERS (
SCHED_NAME VARCHAR(120) NOT NULL,
TRIGGER_NAME VARCHAR(200) NOT NULL,
TRIGGER_GROUP VARCHAR(200) NOT NULL,
JOB_NAME VARCHAR(200) NOT NULL,
JOB_GROUP VARCHAR(200) NOT NULL,
DESCRIPTION VARCHAR(250) NULL,
NEXT_FIRE_TIME BIGINT(13) NULL,
PREV_FIRE_TIME BIGINT(13) NULL,
PRIORITY INTEGER NULL,
TRIGGER_STATE VARCHAR(16) NOT NULL,
TRIGGER_TYPE VARCHAR(8) NOT NULL,
START_TIME BIGINT(13) NOT NULL,
END_TIME BIGINT(13) NULL,
CALENDAR_NAME VARCHAR(200) NULL,
MISFIRE_INSTR SMALLINT(2) NULL,
JOB_DATA BLOB NULL,
PRIMARY KEY (SCHED_NAME,TRIGGER_NAME,TRIGGER_GROUP),
FOREIGN KEY (SCHED_NAME,JOB_NAME,JOB_GROUP)
REFERENCES QRTZ_JOB_DETAILS(SCHED_NAME,JOB_NAME,JOB_GROUP))
ENGINE=InnoDB;
CREATE TABLE QRTZ_SIMPLE_TRIGGERS (
SCHED_NAME VARCHAR(120) NOT NULL,
TRIGGER_NAME VARCHAR(200) NOT NULL,
TRIGGER_GROUP VARCHAR(200) NOT NULL,
REPEAT_COUNT BIGINT(7) NOT NULL,
REPEAT_INTERVAL BIGINT(12) NOT NULL,
TIMES_TRIGGERED BIGINT(10) NOT NULL,
PRIMARY KEY (SCHED_NAME,TRIGGER_NAME,TRIGGER_GROUP),
FOREIGN KEY (SCHED_NAME,TRIGGER_NAME,TRIGGER_GROUP)
REFERENCES QRTZ_TRIGGERS(SCHED_NAME,TRIGGER_NAME,TRIGGER_GROUP))
ENGINE=InnoDB;
CREATE TABLE QRTZ_CRON_TRIGGERS (
SCHED_NAME VARCHAR(120) NOT NULL,
TRIGGER_NAME VARCHAR(200) NOT NULL,
TRIGGER_GROUP VARCHAR(200) NOT NULL,
CRON_EXPRESSION VARCHAR(120) NOT NULL,
TIME_ZONE_ID VARCHAR(80),
PRIMARY KEY (SCHED_NAME,TRIGGER_NAME,TRIGGER_GROUP),
FOREIGN KEY (SCHED_NAME,TRIGGER_NAME,TRIGGER_GROUP)
REFERENCES QRTZ_TRIGGERS(SCHED_NAME,TRIGGER_NAME,TRIGGER_GROUP))
ENGINE=InnoDB;
CREATE TABLE QRTZ_SIMPROP_TRIGGERS
(
SCHED_NAME VARCHAR(120) NOT NULL,
TRIGGER_NAME VARCHAR(200) NOT NULL,
TRIGGER_GROUP VARCHAR(200) NOT NULL,
STR_PROP_1 VARCHAR(512) NULL,
STR_PROP_2 VARCHAR(512) NULL,
STR_PROP_3 VARCHAR(512) NULL,
INT_PROP_1 INT NULL,
INT_PROP_2 INT NULL,
LONG_PROP_1 BIGINT NULL,
LONG_PROP_2 BIGINT NULL,
DEC_PROP_1 NUMERIC(13,4) NULL,
DEC_PROP_2 NUMERIC(13,4) NULL,
BOOL_PROP_1 VARCHAR(1) NULL,
BOOL_PROP_2 VARCHAR(1) NULL,
PRIMARY KEY (SCHED_NAME,TRIGGER_NAME,TRIGGER_GROUP),
FOREIGN KEY (SCHED_NAME,TRIGGER_NAME,TRIGGER_GROUP)
REFERENCES QRTZ_TRIGGERS(SCHED_NAME,TRIGGER_NAME,TRIGGER_GROUP))
ENGINE=InnoDB;
CREATE TABLE QRTZ_BLOB_TRIGGERS (
SCHED_NAME VARCHAR(120) NOT NULL,
TRIGGER_NAME VARCHAR(200) NOT NULL,
TRIGGER_GROUP VARCHAR(200) NOT NULL,
BLOB_DATA BLOB NULL,
PRIMARY KEY (SCHED_NAME,TRIGGER_NAME,TRIGGER_GROUP),
INDEX (SCHED_NAME,TRIGGER_NAME, TRIGGER_GROUP),
FOREIGN KEY (SCHED_NAME,TRIGGER_NAME,TRIGGER_GROUP)
REFERENCES QRTZ_TRIGGERS(SCHED_NAME,TRIGGER_NAME,TRIGGER_GROUP))
ENGINE=InnoDB;
CREATE TABLE QRTZ_CALENDARS (
SCHED_NAME VARCHAR(120) NOT NULL,
CALENDAR_NAME VARCHAR(200) NOT NULL,
CALENDAR BLOB NOT NULL,
PRIMARY KEY (SCHED_NAME,CALENDAR_NAME))
ENGINE=InnoDB;
CREATE TABLE QRTZ_PAUSED_TRIGGER_GRPS (
SCHED_NAME VARCHAR(120) NOT NULL,
TRIGGER_GROUP VARCHAR(200) NOT NULL,
PRIMARY KEY (SCHED_NAME,TRIGGER_GROUP))
ENGINE=InnoDB;
CREATE TABLE QRTZ_FIRED_TRIGGERS (
SCHED_NAME VARCHAR(120) NOT NULL,
ENTRY_ID VARCHAR(95) NOT NULL,
TRIGGER_NAME VARCHAR(200) NOT NULL,
TRIGGER_GROUP VARCHAR(200) NOT NULL,
INSTANCE_NAME VARCHAR(200) NOT NULL,
FIRED_TIME BIGINT(13) NOT NULL,
SCHED_TIME BIGINT(13) NOT NULL,
PRIORITY INTEGER NOT NULL,
STATE VARCHAR(16) NOT NULL,
JOB_NAME VARCHAR(200) NULL,
JOB_GROUP VARCHAR(200) NULL,
IS_NONCONCURRENT VARCHAR(1) NULL,
REQUESTS_RECOVERY VARCHAR(1) NULL,
PRIMARY KEY (SCHED_NAME,ENTRY_ID))
ENGINE=InnoDB;
CREATE TABLE QRTZ_SCHEDULER_STATE (
SCHED_NAME VARCHAR(120) NOT NULL,
INSTANCE_NAME VARCHAR(200) NOT NULL,
LAST_CHECKIN_TIME BIGINT(13) NOT NULL,
CHECKIN_INTERVAL BIGINT(13) NOT NULL,
PRIMARY KEY (SCHED_NAME,INSTANCE_NAME))
ENGINE=InnoDB;
CREATE TABLE QRTZ_LOCKS (
SCHED_NAME VARCHAR(120) NOT NULL,
LOCK_NAME VARCHAR(40) NOT NULL,
PRIMARY KEY (SCHED_NAME,LOCK_NAME))
ENGINE=InnoDB;
CREATE INDEX IDX_QRTZ_J_REQ_RECOVERY ON QRTZ_JOB_DETAILS(SCHED_NAME,REQUESTS_RECOVERY);
CREATE INDEX IDX_QRTZ_J_GRP ON QRTZ_JOB_DETAILS(SCHED_NAME,JOB_GROUP);
CREATE INDEX IDX_QRTZ_T_J ON QRTZ_TRIGGERS(SCHED_NAME,JOB_NAME,JOB_GROUP);
CREATE INDEX IDX_QRTZ_T_JG ON QRTZ_TRIGGERS(SCHED_NAME,JOB_GROUP);
CREATE INDEX IDX_QRTZ_T_C ON QRTZ_TRIGGERS(SCHED_NAME,CALENDAR_NAME);
CREATE INDEX IDX_QRTZ_T_G ON QRTZ_TRIGGERS(SCHED_NAME,TRIGGER_GROUP);
CREATE INDEX IDX_QRTZ_T_STATE ON QRTZ_TRIGGERS(SCHED_NAME,TRIGGER_STATE);
CREATE INDEX IDX_QRTZ_T_N_STATE ON QRTZ_TRIGGERS(SCHED_NAME,TRIGGER_NAME,TRIGGER_GROUP,TRIGGER_STATE);
CREATE INDEX IDX_QRTZ_T_N_G_STATE ON QRTZ_TRIGGERS(SCHED_NAME,TRIGGER_GROUP,TRIGGER_STATE);
CREATE INDEX IDX_QRTZ_T_NEXT_FIRE_TIME ON QRTZ_TRIGGERS(SCHED_NAME,NEXT_FIRE_TIME);
CREATE INDEX IDX_QRTZ_T_NFT_ST ON QRTZ_TRIGGERS(SCHED_NAME,TRIGGER_STATE,NEXT_FIRE_TIME);
CREATE INDEX IDX_QRTZ_T_NFT_MISFIRE ON QRTZ_TRIGGERS(SCHED_NAME,MISFIRE_INSTR,NEXT_FIRE_TIME);
CREATE INDEX IDX_QRTZ_T_NFT_ST_MISFIRE ON QRTZ_TRIGGERS(SCHED_NAME,MISFIRE_INSTR,NEXT_FIRE_TIME,TRIGGER_STATE);
CREATE INDEX IDX_QRTZ_T_NFT_ST_MISFIRE_GRP ON QRTZ_TRIGGERS(SCHED_NAME,MISFIRE_INSTR,NEXT_FIRE_TIME,TRIGGER_GROUP,TRIGGER_STATE);
CREATE INDEX IDX_QRTZ_FT_TRIG_INST_NAME ON QRTZ_FIRED_TRIGGERS(SCHED_NAME,INSTANCE_NAME);
CREATE INDEX IDX_QRTZ_FT_INST_JOB_REQ_RCVRY ON QRTZ_FIRED_TRIGGERS(SCHED_NAME,INSTANCE_NAME,REQUESTS_RECOVERY);
CREATE INDEX IDX_QRTZ_FT_J_G ON QRTZ_FIRED_TRIGGERS(SCHED_NAME,JOB_NAME,JOB_GROUP);
CREATE INDEX IDX_QRTZ_FT_JG ON QRTZ_FIRED_TRIGGERS(SCHED_NAME,JOB_GROUP);
CREATE INDEX IDX_QRTZ_FT_T_G ON QRTZ_FIRED_TRIGGERS(SCHED_NAME,TRIGGER_NAME,TRIGGER_GROUP);
CREATE INDEX IDX_QRTZ_FT_TG ON QRTZ_FIRED_TRIGGERS(SCHED_NAME,TRIGGER_GROUP);
commit;
好了氛改,開(kāi)始寫定時(shí)任務(wù)業(yè)務(wù)
首先我們需要自定義一個(gè)Job的子類來(lái)寫JobDetail
package com.fantj.quartz.notSpringFrame;
/**
* quartz增刪改查方法
*/
public class MyJob implements Job {
public MyJob(){}
@Override
//把要執(zhí)行的操作帐萎,寫在execute方法中
public void execute(JobExecutionContext arg0) throws JobExecutionException
{
DateFormat df=new SimpleDateFormat("yyyy-MM-dd HH:mm:ss:SSS");
System.out.println("測(cè)試Quartz"+ df.format(Calendar.getInstance().getTime()));
}
}
其次,我在這里演示 如何再 ServiceImpl 里注入并使用 定時(shí)任務(wù)胜卤。
package com.fantj.service.impl;
/**
* Created by Fant.J.
*/
@Service
public class UserServiceImpl implements UserService {
@Autowired
private UserMapper userMapper;
// 注入任務(wù)調(diào)度器
@Autowired
private Scheduler scheduler;
// 測(cè)試quartz 框架 定時(shí)任務(wù)
public void sendMail() throws Exception {
//設(shè)置開(kāi)始時(shí)間為1分鐘后
long startAtTime = System.currentTimeMillis() + 1000 * 60;
//任務(wù)名稱
String name = UUID.randomUUID().toString();
//任務(wù)所屬分組
String group = MyJob.class.getName();
//創(chuàng)建任務(wù)
JobDetail jobDetail = JobBuilder.newJob(MyJob.class).withIdentity(name,group).build();
//創(chuàng)建任務(wù)觸發(fā)器
Trigger trigger = TriggerBuilder.newTrigger().withIdentity(name,group).startAt(new Date(startAtTime)).build();
//將觸發(fā)器與任務(wù)綁定到調(diào)度器內(nèi)
scheduler.scheduleJob(jobDetail, trigger);
}
}
還是像在單機(jī)下玩quartz一樣疆导,需要傳入兩個(gè)對(duì)象(一個(gè)JobDetail,一個(gè)Trigger)任務(wù)詳情和觸發(fā)器葛躏。不懂的翻上文有做詳細(xì)介紹澈段。好了 此時(shí)我們啟動(dòng)項(xiàng)目,就可以看到控制臺(tái)打印舰攒,并且數(shù)據(jù)庫(kù)里quar_等表也自動(dòng)填入了定時(shí)任務(wù)的信息败富。
我們大概只是完成了quartz的持久化,上文我們說(shuō)過(guò)摩窃,quartz的亮點(diǎn)主要再對(duì)定時(shí)任務(wù)的可控性兽叮,那么如果需要再后臺(tái)管理頁(yè)面上完成 增刪改查 定時(shí)任務(wù)。我推薦一個(gè)博客給大家猾愿,寫的很好http://blog.csdn.net/u012907049/article/details/73801122
也謝謝這位作者鹦聪。
最后謝謝大家,這篇文章挺長(zhǎng)了蒂秘。
介紹下我的所有文集:
流行框架
SpringCloud
springboot
nginx
redis
底層實(shí)現(xiàn)原理:
Java NIO教程
Java reflection 反射詳解
Java并發(fā)學(xué)習(xí)筆錄
Java Servlet教程
jdbc組件詳解
Java NIO教程
Java語(yǔ)言/版本 研究