Spring Boot结合Nacos自定义计划任务执行时间【支持多次执行】

1、Nacos配置信息

2、 TasksScheduler文件：

package com.example.demo.utils;

import cn.hutool.core.date.DateUtil;
import com.example.demo.config.TasksConfig;
import lombok.extern.slf4j.Slf4j;
import org.springframework.scheduling.annotation.EnableScheduling;
import org.springframework.scheduling.annotation.Scheduled;
import org.springframework.stereotype.Component;

import javax.annotation.PostConstruct;
import javax.annotation.Resource;

/**
 * @author QiaoChu
 */
@Slf4j
@Component
@EnableScheduling
public class TasksScheduler {
    @Resource
    TasksConfig tasksConfig;

    @PostConstruct
    public void logConfigValues() {
        log.info("OthSwitch: {}, CronExpression: {}", tasksConfig.getOthSwitch(), tasksConfig.getCronExpression());
    }

    @Scheduled(cron = "#{@taskConfig.cronExpression}")
    public void otherTask() {
        log.info("当前Cron表达式: {}", tasksConfig.getCronExpression());
        log.info("OthSwitch值: {}", tasksConfig.getOthSwitch());
        if (tasksConfig.getOthSwitch() == 1) {
            log.info("执行，自定义计划任务，当前时间:{}，执行时间：{}", DateUtil.format(DateUtil.date(), "yyyy-MM-dd HH:mm:ss"), tasksConfig.getCronExpression());
        } else {
            log.info("暂不执行，自定义计划任务，当前时间:{}", DateUtil.format(DateUtil.date(), "yyyy-MM-dd HH:mm:ss"));
        }
    }

    public void upTask(String newCron, Integer newSwitch) {
        tasksConfig.setCronExpression(newCron);
        tasksConfig.setOthSwitch(newSwitch);
        log.info("更新Cron表达式为: {}, OthSwitch为: {}", newCron, newSwitch);
    }
}

3、TasksConfig文件：

package com.example.demo.config;

import lombok.Data;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.cloud.context.config.annotation.RefreshScope;
import org.springframework.context.annotation.Configuration;

/**
 * @author QiaoChu
 */
@Data
@RefreshScope
@Configuration
public class TasksConfig {
    // 自定义开关：1-开 0-关
    @Value("${task.othSwitch}")
    private Integer othSwitch;
    // 自定义执行时间
    @Value("${task.cronExpression}")
    private String cronExpression;
}

4、TasksController文件

package com.example.demo.controller;

/**
 * @author QiaoChu
 */

import com.example.demo.config.TasksConfig;
import com.example.demo.utils.TasksScheduler;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

import javax.annotation.Resource;

@RestController
@RequestMapping("/tasks")
public class TasksController {
    @Resource
    private TasksScheduler tasksScheduler;
    @Resource
    private TasksConfig tasksConfig;

    @GetMapping("/upTask")
    public String upTask() {
        String newCron = tasksConfig.getCronExpression();
        Integer newSwitch = tasksConfig.getOthSwitch();
        tasksScheduler.upTask(newCron, newSwitch);
        return String.format("Cron表达式更新为: %s, 开关值更新为: %d", newCron, newSwitch);
    }
}

5、再次执行，需要在再次执行时间之前，通过浏览器访问URL地址刷新配置：http://192.168.1.108:8888/tasks/upTask
【ip:端口】
访问输出：Cron表达式更新为: 0 30 09 * * ?, 开关值更新为: 0