SSM框架中使用@Scheduled定时器，只想执行一次

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.stereotype.Service;

import java.util.concurrent.TimeUnit;

@Service
public class RedisUtil {

	@Autowired
	RedisTemplate redisTemplate;

	public  T getObject(String key, Class clazz) {
		Object valueObj = redisTemplate.opsForValue().get(key);
		if (valueObj == null) {
			return null;
		}
		if (clazz.isInstance(valueObj)) {
			return (T) valueObj;
		} else if (clazz == Long.class && valueObj instanceof Integer) {
			Integer obj = (Integer) valueObj;
			return (T) Long.valueOf(obj.longValue());
		}
		return null;
	}

	public void setObject(String key, Object value, Long second) {
		redisTemplate.opsForValue().set(key, value, second, TimeUnit.SECONDS);
	}

	public void setObjectForever(String key, Object value) {
		redisTemplate.opsForValue().set(key, value);
	}

	public Long increment(String key, Long second) {
		Long value = redisTemplate.opsForValue().increment(key);
		redisTemplate.expire(key, second, TimeUnit.SECONDS);
		return value;
	}

	public void decrement(String key) {
		redisTemplate.opsForValue().decrement(key);
	}


	public boolean setIfAbsent(String key, Long second) {
		return redisTemplate.opsForValue().setIfAbsent(key, "1", second, TimeUnit.SECONDS);
	}
}

import cn.hutool.core.date.DateUtil;

import com.easy.hotel.pms.service.impl.RedisUtil;
import lombok.AllArgsConstructor;
import org.springframework.scheduling.annotation.Scheduled;
import org.springframework.stereotype.Component;

import java.util.Date;
 
 
@Component
@AllArgsConstructor
public class RedisGeoCommunityRunner {


	private final RedisUtil redisUtil;

	private static String redisGeoCommunityCount = "REDIS_GEO_COMMUNITY_COUNT";


	
	@Scheduled(cron = "*/5 * * * * ?")//每隔5秒执行一次
	public void totalIndex() {
		try {
			System.out.println(com.easy.hotel.pms.util.DateUtil.toDateTimeStr(DateUtil.toLocalDateTime(new Date())) );
			Integer count = redisUtil.getObject(redisGeoCommunityCount, Integer.class);
			if(count == null){
				redisUtil.setObjectForever(redisGeoCommunityCount,1);
				count = redisUtil.getObject(redisGeoCommunityCount, Integer.class);
			}
			if(count > 1){
				return ;
			}else{
				redisUtil.setObjectForever(redisGeoCommunityCount,2);
			}

			execteOnlyOnce( );


		} catch (Exception e) {
			e.printStackTrace();
		}
	}

	private void execteOnlyOnce( ) {
		System.out.println("只执行一次");

	}
}