最基本的RedisUtils（CRUD）

package com.ddkjt.utils;

import com.alibaba.fastjson.JSON;
import lombok.AllArgsConstructor;
import lombok.extern.slf4j.Slf4j;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.stereotype.Component;

import java.util.concurrent.TimeUnit;

/**
 * Redis工具类
 */

@Component
@Slf4j
@AllArgsConstructor
public class RedisUtils {

    private final RedisTemplate<String, Object> redisTemplate;

    /**
     * 存放object
     *
     * @param key     键
     * @param value   值
     * @param timeout 过期时间
     */
    public void set(String key, Object value, Long timeout) {
        try {
            redisTemplate.opsForValue().set(key, toJson(value));
            if (timeout != null) {
                redisTemplate.expire(key, timeout, TimeUnit.SECONDS);
            }
        } catch (Exception e) {
            log.error(String.valueOf(e));
        }
    }

    public void set(String key, Object value) {
        set(key, value, null);
    }

    /**
     * 删除
     *
     * @param key 键
     * @return 返回boolean
     */
    public Boolean delKey(String key) {
        return redisTemplate.delete(key);
    }

    /**
     * 查询
     *
     * @param key 键
     * @return 返回Object
     */
    public Object get(String key) {
        return redisTemplate.opsForValue().get(key);
    }

    /**
     * 判断 key是否存在
     *
     * @param key 键
     * @return true 存在 false不存在
     */
    public Boolean hasKey(String key) {
        return redisTemplate.hasKey(key);
    }

    /**
     * Object转成JSON数据
     *
     * @param object 接收值
     * @return 返回值
     */
    private String toJson(Object object) {
        if (object instanceof Integer || object instanceof Long || object instanceof Float || object instanceof Double
                || object instanceof Boolean || object instanceof String) {
            return String.valueOf(object);
        }
        return JSON.toJSONString(object);
    }

}

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