1、pom.xml

<project xmlns="http://maven.apache.org/POM/4.0.0"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
	<modelVersion>4.0.0</modelVersion>

	<groupId>test.hanergy</groupId>
	<artifactId>staticTast</artifactId>
	<version>0.0.1-SNAPSHOT</version>
	<packaging>jar</packaging>

	<name>staticTast</name>
	<url>http://maven.apache.org</url>

	<parent>
		<groupId>org.springframework.boot</groupId>
		<artifactId>spring-boot-starter-parent</artifactId>
		<version>1.5.6.RELEASE</version>
		<relativePath /> <!-- lookup parent from repository -->
	</parent>

	<properties>
		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
		<java.version>1.8</java.version>
	</properties>

	<dependencies>
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-web</artifactId>
		</dependency>
	</dependencies>
</project>
 

2、啟動類App.java

package test.hanergy;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.scheduling.annotation.EnableScheduling;

@EnableScheduling
@SpringBootApplication
public class App {
	public static void main(String[] args) {
		SpringApplication.run(App.class, args);
	}
}
 

3、配置類ScheduleConfig

package test.hanergy.config;

import java.util.concurrent.Executors;

import org.springframework.context.annotation.Configuration;
import org.springframework.scheduling.annotation.SchedulingConfigurer;
import org.springframework.scheduling.config.ScheduledTaskRegistrar;

@Configuration
public class ScheduleConfig implements SchedulingConfigurer {
	
    @Bean(destroyMethod = "shutdown")
    public Executor taskExecutor() {
        return Executors.newScheduledThreadPool(20);
    }

    @Override
    public void configureTasks(ScheduledTaskRegistrar taskRegistrar) {
        taskRegistrar.setScheduler(taskExecutor());
    }

}
 

4、任務類Task

package test.hanergy.task;

import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.Date;

import org.springframework.scheduling.annotation.Scheduled;
import org.springframework.stereotype.Component;

@Component
public class Task {

	@Scheduled(cron="0/1 * * * * ? ")   //每1秒執行一次 
    public void testCron1() {
       DateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");  
        System.out.println(sdf.format(new Date())+"*********每1秒執行一次");
    }
   
   @Scheduled(cron="0/2 * * * * ? ")   //每2秒執行一次 
    public void testCron2() {
       DateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");  
        System.out.println(sdf.format(new Date())+"*********每2秒執行一次");
    }
   
   @Scheduled(cron="0/3 * * * * ? ")   //每3秒執行一次 
    public void testCron3() {
       DateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");  
        System.out.println(sdf.format(new Date())+"*********每3秒執行一次");
    }
   
   @Scheduled(cron="0/4 * * * * ? ")   //每4秒執行一次 
    public void testCron4() {
       DateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");  
        System.out.println(sdf.format(new Date())+"*********每4秒執行一次");
    }
}