用Springboot自带的注解去定时查询过期的红包

╰半橙微兮° 2022-03-15 11:38 89阅读 0赞

Springboot 自带的二个注解是: @EnableScheduling @Component

@EnableScheduling 是放在Springboot main方法 类上面,通过它进行加载,找到加了@Component注解的方法,下面是代码!

1.先引入jar包

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

2.在Main方法加入@EnableScheduling 这个注解

/*定时器注解*/
    @EnableScheduling
    @SpringBootApplication
    public class GunsApplication {
    private final static Logger logger = LoggerFactory.getLogger(GunsApplication.class);
    public static void main(String[] args) {
        SpringApplication.run(GunsApplication.class, args);
        logger.error("GunsApplication is success!");
      }
    }

3.在你需要定时查询的方法上加入@Component注解

package com.stylefeng.guns.modular.system.service.impl;
    
    import com.baomidou.mybatisplus.mapper.EntityWrapper;
    import com.stylefeng.guns.modular.system.model.Wallet;
    import com.stylefeng.guns.modular.system.service.IWalletService;
    import org.slf4j.Logger;
    import org.slf4j.LoggerFactory;
    import org.springframework.beans.factory.annotation.Autowired;
    import org.springframework.scheduling.annotation.Scheduled;
    import org.springframework.stereotype.Component;
    import org.springframework.stereotype.Service;
    
    /**
     * Created by Administrator on 2019/3/2/002.
     */
    @Component
    @Service
    public class A {
        //钱包
        @Autowired
        private IWalletService walletService;
    
        private static Logger logger = LoggerFactory.getLogger(A.class);
    
        public final static int OEN = 10*10000;
       // @Scheduled(fixedRate = 10000)
        //@Scheduled(initialDelay = 10000,fixedRate = 15000)
        //@Scheduled(fixedRate = OEN)
    
        @Scheduled(cron = "14 16 14 * * ?")
        public void list() {
            Wallet wallet = this.walletService.selectOne(new EntityWrapper<Wallet>().eq("user_id",1));
            logger.info("10秒执行一次");
            logger.info("查询的数据是:"+ wallet);
        }
    }