新建测试Demo类执行定时任务

package com.task.zhixingshijian;

import java.time.LocalDateTime;
import java.time.temporal.ChronoField;
import java.util.*;

/**
 * @author wuzhenyong
 * ClassName:TaskDemo.java
 * date:2022-09-28 09:44
 * Description:
 */
public class TaskDemo {

	/**
	 * 指定时间执行一次定时任务
	 *
	 * @param localDateTime 触发时机
	 * @param timing        参数信息
	 */
	public void timing(LocalDateTime localDateTime, Map<String, String> timing) {
		Calendar calendar = Calendar.getInstance();
		// 年份
		calendar.set(Calendar.YEAR, localDateTime.get(ChronoField.YEAR));
		// 月份 传入日期需要-1
		calendar.set(Calendar.MONTH, localDateTime.get(ChronoField.MONTH_OF_YEAR)-1);
		// 天数
		calendar.set(Calendar.DAY_OF_MONTH, localDateTime.get(ChronoField.DAY_OF_MONTH));
		// 小时
		calendar.set(Calendar.HOUR_OF_DAY, localDateTime.get(ChronoField.HOUR_OF_DAY));
		// 分钟
		calendar.set(Calendar.MINUTE, localDateTime.get(ChronoField.MINUTE_OF_HOUR));
		// 秒
		calendar.set(Calendar.SECOND, localDateTime.get(ChronoField.SECOND_OF_MINUTE));
		Date time = calendar.getTime();
		Timer timer = new Timer();
		// 执行
		timer.schedule(new TimerTask() {
			@Override
			public void run() {
				System.out.println("执行了指定执行时间任务，localDateTime:" + LocalDateTime.now());
				System.out.println("执行内容：" + timing.toString());
			}
		}, time);
	}
}

创建项目启动后进行配置具体时间执行定时类

注意：此类只是测试一下，如果项目中是不需要此类的

package com.task.zhixingshijian;

import org.springframework.stereotype.Component;

import java.time.LocalDateTime;
import java.util.HashMap;
import java.util.Map;

/**
 * @author wuzhenyong
 * ClassName:TaskCommandLineRunner.java
 * date:2022-09-28 09:43
 * Description:
 */
@Component
public class TaskCommandLineRunner implements org.springframework.boot.CommandLineRunner {
	/**
	 * 启动项目后运行
	 *
	 * @param args arg游
	 */
	@Override
	public void run(String... args) {
		// 指定触发的时间1
		LocalDateTime localDateTime1 = LocalDateTime.of(2022, 9, 28, 10, 14, 00);
		Map<String, String> timing1 = new HashMap<>();
		timing1.put("name", "timing1");
		new TaskDemo().timing(localDateTime1, timing1);
		// 指定触发的时间2
		LocalDateTime localDateTime2 = LocalDateTime.of(2022, 9, 28, 10, 13, 00);
		Map<String, String> timing2 = new HashMap<>();
		timing2.put("name", "timing2");
		new TaskDemo().timing(localDateTime2, timing2);
		// 指定触发的时间3
		LocalDateTime localDateTime3 = LocalDateTime.of(2022, 9, 28, 10, 15, 00);
		Map<String, String> timing3 = new HashMap<>();
		timing3.put("name", "timing3");
		new TaskDemo().timing(localDateTime3, timing3);
	}
}

运行效果