├── .gitignore
├── README.md
├── pom.xml
├── springboot-schedule.iml
└── src
└── main
├── java
└── com
│ └── mmzs
│ └── springboot
│ └── s00
│ └── application
│ ├── StaticScheduleTaskApplication.java
│ ├── controller
│ ├── DynamicScheduleTask.java
│ ├── MultithreadScheduleTask.java
│ └── SaticScheduleTask.java
│ └── dao
│ └── ICronMapper.java
└── resources
├── application.yml
└── mybatis
├── mapper
└── CronMapper.xml
└── mybatis.cfg.xml
/.gitignore:
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1 | # Compiled class file
2 | *.class
3 |
4 | # Log file
5 | *.log
6 |
7 | # BlueJ files
8 | *.ctxt
9 |
10 | # Mobile Tools for Java (J2ME)
11 | .mtj.tmp/
12 |
13 | # Package Files #
14 | *.jar
15 | *.war
16 | *.nar
17 | *.ear
18 | *.zip
19 | *.tar.gz
20 | *.rar
21 |
22 | # virtual machine crash logs, see http://www.java.com/en/download/help/error_hotspot.xml
23 | target/
24 | !.mvn/wrapper/maven-wrapper.jar
25 |
26 | ### STS ###
27 | .apt_generated
28 | .classpath
29 | .factorypath
30 | .project
31 | .settings
32 | .springBeans
33 |
34 | ### IntelliJ IDEA ###
35 | .idea
36 | *.iws
37 | *.iml
38 | *.ipr
39 | *.log
40 | *.log*
41 |
42 | ### NetBeans ###
43 | nbproject/private/
44 | build/
45 | nbbuild/
46 | dist/
47 | nbdist/
48 | .nb-gradle/
49 |
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/README.md:
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1 | # springboot-schedule
2 | springboot定时任务demo
3 | ## 使用SpringBoot创建定时任务非常简单，
4 | 目前主要有以下三种创建方式：
5 | - 一、基于注解(@Scheduled)
6 | - 二、基于接口（SchedulingConfigurer） 前者相信大家都很熟悉，但是实际使用中我们往往想从数据库中读取指定时间来动态执行定时任务，这时候基于接口的定时任务就派上用场了。
7 | - 三、基于注解设定多线程定时任务
8 | ### 详细内容，参见此处
9 | [https://www.mmzsblog.cn/](https://www.mmzsblog.cn/articles/2019/08/08/1565247960802.html)
10 |
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/pom.xml:
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2 |
5 | 4.0.0
6 |
7 | com.mmzs.springboot
8 | springboot-schedule
9 | 1.0-SNAPSHOT
10 |
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12 |
13 | org.apache.maven.plugins
14 | maven-compiler-plugin
15 |
16 | 8
17 | 8
18 |
19 |
20 |
21 |
22 |
23 |
24 | org.springframework.boot
25 | spring-boot-starter
26 | 2.0.4.RELEASE
27 |
28 |
29 |
30 |
31 | org.springframework.boot
32 | spring-boot-starter-web
33 |
34 |
35 | mysql
36 | mysql-connector-java
37 |
38 |
39 | org.mybatis.spring.boot
40 | mybatis-spring-boot-starter
41 | 1.3.1
42 |
43 |
44 | org.mybatis
45 | mybatis
46 | 3.4.5
47 | compile
48 |
49 |
50 | org.mybatis
51 | mybatis-spring
52 | 1.3.1
53 | compile
54 |
55 |
56 |
57 |
58 |
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/springboot-schedule.iml:
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/src/main/java/com/mmzs/springboot/s00/application/StaticScheduleTaskApplication.java:
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1 | package com.mmzs.springboot.s00.application;
2 |
3 | import org.mybatis.spring.annotation.MapperScan;
4 | import org.springframework.boot.SpringApplication;
5 | import org.springframework.boot.autoconfigure.SpringBootApplication;
6 | import org.springframework.context.annotation.ComponentScan;
7 | import org.springframework.scheduling.annotation.EnableScheduling;
8 |
9 | @SpringBootApplication
10 | //@MapperScan( "com.mmzs.springboot.s00.application")
11 | public class StaticScheduleTaskApplication {
12 | public static void main(String[] args) {
13 | SpringApplication.run(StaticScheduleTaskApplication.class, args);
14 | }
15 | }
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/src/main/java/com/mmzs/springboot/s00/application/controller/DynamicScheduleTask.java:
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1 | package com.mmzs.springboot.s00.application.controller;
2 |
3 | import com.mmzs.springboot.s00.application.dao.ICronMapper;
4 | import org.apache.ibatis.annotations.Mapper;
5 | import org.apache.ibatis.annotations.Select;
6 | import org.springframework.beans.factory.annotation.Autowired;
7 | import org.springframework.context.annotation.Configuration;
8 | import org.springframework.scheduling.annotation.EnableScheduling;
9 | import org.springframework.scheduling.annotation.SchedulingConfigurer;
10 | import org.springframework.scheduling.config.ScheduledTaskRegistrar;
11 | import org.springframework.scheduling.support.CronTrigger;
12 | import org.springframework.stereotype.Component;
13 | import org.springframework.util.StringUtils;
14 |
15 | import java.time.LocalDateTime;
16 |
17 | @Component
18 | @Configuration //1.主要用于标记配置类，兼备Component的效果。
19 | @EnableScheduling // 2.开启定时任务
20 | public class DynamicScheduleTask implements SchedulingConfigurer {
21 |
22 | @Mapper
23 | public interface CronMapper {
24 | @Select("select cron from cron limit 1")
25 | public String getCron();
26 | }
27 |
28 | @Autowired //注入mapper
29 | @SuppressWarnings("all")
30 | CronMapper cronMapper;
31 |
32 | /**
33 | * 执行定时任务.
34 | */
35 | @Override
36 | public void configureTasks(ScheduledTaskRegistrar taskRegistrar) {
37 |
38 | taskRegistrar.addTriggerTask(
39 | //1.添加任务内容(Runnable)
40 | () -> System.out.println("执行动态定时任务: " + LocalDateTime.now().toLocalTime()),
41 | //2.设置执行周期(Trigger)
42 | triggerContext -> {
43 | //2.1 从数据库获取执行周期
44 | String cron = cronMapper.getCron();
45 | //2.2 合法性校验.
46 | if (StringUtils.isEmpty(cron)) {
47 | // Omitted Code ..
48 | }
49 | //2.3 返回执行周期(Date)
50 | return new CronTrigger(cron).nextExecutionTime(triggerContext);
51 | }
52 | );
53 | }
54 |
55 | }
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/src/main/java/com/mmzs/springboot/s00/application/controller/MultithreadScheduleTask.java:
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1 | package com.mmzs.springboot.s00.application.controller;
2 |
3 | import org.springframework.scheduling.annotation.Async;
4 | import org.springframework.scheduling.annotation.EnableAsync;
5 | import org.springframework.scheduling.annotation.EnableScheduling;
6 | import org.springframework.scheduling.annotation.Scheduled;
7 | import org.springframework.stereotype.Component;
8 | import java.time.LocalDateTime;
9 |
10 |
11 | //@Component注解用于对那些比较中立的类进行注释；
12 | //相对与在持久层、业务层和控制层分别采用 @Repository、@Service 和 @Controller 对分层中的类进行注释
13 | @Component
14 | @EnableScheduling // 1.开启定时任务
15 | @EnableAsync // 2.开启多线程
16 | public class MultithreadScheduleTask {
17 |
18 | @Async
19 | @Scheduled(fixedDelay = 1000) //间隔1秒
20 | public void first() throws InterruptedException {
21 | System.out.println("第一个定时任务开始 : " + LocalDateTime.now().toLocalTime() + "\r\n线程 : " + Thread.currentThread().getName());
22 | System.out.println();
23 | Thread.sleep(1000 * 10);
24 | }
25 |
26 | @Async
27 | @Scheduled(fixedDelay = 2000)
28 | public void second() {
29 | System.out.println("第二个定时任务开始 : " + LocalDateTime.now().toLocalTime() + "\r\n线程 : " + Thread.currentThread().getName());
30 | System.out.println();
31 | }
32 | }
33 |
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/src/main/java/com/mmzs/springboot/s00/application/controller/SaticScheduleTask.java:
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1 | package com.mmzs.springboot.s00.application.controller;
2 |
3 | import org.springframework.context.annotation.Configuration;
4 | import org.springframework.scheduling.annotation.EnableScheduling;
5 | import org.springframework.scheduling.annotation.Scheduled;
6 | import org.springframework.stereotype.Component;
7 |
8 | import java.time.LocalDateTime;
9 |
10 | @Component
11 | @Configuration //1.主要用于标记配置类，兼备Component的效果。
12 | @EnableScheduling // 2.开启定时任务
13 | public class SaticScheduleTask {
14 | //3.添加定时任务
15 | @Scheduled(cron = "0/5 * * * * ?")
16 | private void configureTasks() {
17 | System.err.println("执行静态定时任务时间: " + LocalDateTime.now());
18 | }
19 | }
20 |
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/src/main/java/com/mmzs/springboot/s00/application/dao/ICronMapper.java:
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1 | package com.mmzs.springboot.s00.application.dao;
2 |
3 | import org.apache.ibatis.annotations.Mapper;
4 |
5 |
6 | @Mapper
7 | public interface ICronMapper {
8 | String getCron();
9 | }
10 |
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/src/main/resources/application.yml:
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1 | #application.yml 配置如下：
2 | spring:
3 | datasource:
4 | url: jdbc:mysql://localhost:3306/socks
5 | username: root
6 | password: 123456
7 |
8 | #mybatis:
9 | # config-location: classpath:mybatis/mybatis.cfg.xml # mybatis配置文件所在路径
10 | # type-aliases-package: com.mmzs.springboot.common.entities # 所有Entity别名类所在包
11 | # mapper-locations: classpath:mybatis/mapper/**/*.xml # mapper映射文件
12 |
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/src/main/resources/mybatis/mybatis.cfg.xml:
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