<!--Redis-->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-data-redis</artifactId>
        </dependency>
        <!--Redis-->

import com.alibaba.fastjson.support.spring.FastJsonRedisSerializer;
import com.fasterxml.jackson.annotation.JsonAutoDetect;
import com.fasterxml.jackson.annotation.JsonTypeInfo;
import com.fasterxml.jackson.annotation.PropertyAccessor;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.jsontype.impl.LaissezFaireSubTypeValidator;
import org.springframework.boot.autoconfigure.condition.ConditionalOnMissingBean;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.data.redis.connection.RedisConnectionFactory;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.data.redis.core.StringRedisTemplate;
import org.springframework.data.redis.serializer.StringRedisSerializer;

@Configuration
public class RedisConfig {

    /**
     * 重寫(xiě)Redis序列化方式，使用Json方式: * 當(dāng)我們的數(shù)據(jù)存儲(chǔ)到Redis的時(shí)候，我們的鍵（key）和值（value）
     * 都是通過(guò)Spring提供的Serializer序列化到數(shù)據(jù)庫(kù)的。RedisTemplate默認(rèn)使用的是JdkSerializationRedisSerializer，
     * StringRedisTemplate默認(rèn)使用的是StringRedisSerializer。
     * Spring Data JPA為我們提供了下面的Serializer：
     * GenericToStringSerializer、Jackson2JsonRedisSerializer、JacksonJsonRedisSerializer、
     * JdkSerializationRedisSerializer、OxmSerializer、StringRedisSerializer。
     * 在此我們將自己配置RedisTemplate并定義Serializer。
     *
     * @param redisConnectionFactory * @return
     */
    @Bean("getRedisTemplate")
    public RedisTemplate<String, Object> redisTemplate(RedisConnectionFactory redisConnectionFactory) {
        RedisTemplate<String, Object> redisTemplate = new RedisTemplate<>();
        /**
         * 配置連接工廠
         */
        redisTemplate.setConnectionFactory(redisConnectionFactory);
        /**
         * 使用FJackson2JsonRedisSerializer序列化工具
         */
        FastJsonRedisSerializer fastJsonRedisSerializer = new FastJsonRedisSerializer(Object.class);
        ObjectMapper objectMapper = new ObjectMapper();
        /**
         * 指定要序列化的域Field、set、get，以及修飾符范圍
         * ANY是都有，包括private、public
         */
        objectMapper.setVisibility(PropertyAccessor.ALL, JsonAutoDetect.Visibility.ANY);
        /**
         * 指定序列化輸入的類型，類必須是非final修飾的，
         * final修飾的類，比如
         * public final class User implements Serializable{},會(huì)包異常
         */
        objectMapper.activateDefaultTyping(LaissezFaireSubTypeValidator.instance,
                ObjectMapper.DefaultTyping.NON_FINAL, JsonTypeInfo.As.PROPERTY);


        /**
         *設(shè)置鍵（key）的序列化采用StringRedisSerializer。
         */
        redisTemplate.setKeySerializer(new StringRedisSerializer());
        redisTemplate.setHashKeySerializer(new StringRedisSerializer());

        /**
         * 設(shè)置值（value）的序列化采用jackson2JsonRedisSerializer。
         */
        redisTemplate.setValueSerializer(fastJsonRedisSerializer);
        redisTemplate.setHashValueSerializer(fastJsonRedisSerializer);
        redisTemplate.afterPropertiesSet();
        return redisTemplate;
    }

    /**
     * 配置stringRedisTemplate序列化方式
     *
     * @param redisConnectionFactory
     * @return
     */
    @Bean
    @ConditionalOnMissingBean(StringRedisTemplate.class)
    public StringRedisTemplate stringRedisTemplate(RedisConnectionFactory redisConnectionFactory) {
        StringRedisTemplate template = new StringRedisTemplate();
        template.setConnectionFactory(redisConnectionFactory);
        return template;
    }

}

package com.wangfugui.apprentice.common.util;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.data.redis.core.ValueOperations;
import org.springframework.stereotype.Component;

import java.io.Serializable;
import java.util.concurrent.TimeUnit;

/**
 * RedisUtils:redis工具類
 */
@Component
public class RedisUtils {

    @Autowired
    @Qualifier("getRedisTemplate")
    private RedisTemplate redisTemplate;


    /**
     * 設(shè)置鍵值
     *
     * @Param: [key, value]
     * @return: boolean
     * @Author: MaSiyi
     * @Date: 2021/11/20
     */
    public boolean set(final String key, Object value) {
        boolean result = false;
        try {
            ValueOperations<Serializable, Object> operations = redisTemplate.opsForValue();
            operations.set(key, value);
            result = true;
        } catch (Exception e) {
            e.printStackTrace();
        }
        return result;
    }

    /**
     * 寫(xiě)入緩存設(shè)置失效時(shí)間
     *
     * @param key
     * @param value
     * @return
     */
    public boolean set(final String key, Object value, Long expireTime) {
        boolean result = false;
        try {
            ValueOperations<Serializable, Object> operations = redisTemplate.opsForValue();
            operations.set(key, value);
            redisTemplate.expire(key, expireTime, TimeUnit.SECONDS);
            result = true;
        } catch (Exception e) {
            e.printStackTrace();
        }
        return result;
    }

    /**
     * 批量刪除對(duì)應(yīng)的value
     */
    public void remove(final String... keys) {
        for (String key : keys) {
            remove(key);
        }
    }

    /**
     * 刪除對(duì)應(yīng)的value
     */
    public void remove(final String key) {
        if (exists(key)) {
            redisTemplate.delete(key);
        }
    }

    /**
     * 判斷緩存當(dāng)中是否有對(duì)應(yīng)的value
     *
     * @param key
     * @return
     */
    public boolean exists(final String key) {
        return redisTemplate.hasKey(key);
    }
    
 /**
     * 根據(jù)key，獲取到對(duì)應(yīng)的value值
     *
     * @param key
     *            key-value對(duì)應(yīng)的key
     * @return  該key對(duì)應(yīng)的值。
     *          注: 若key不存在， 則返回null。
     *
     * @date 2020/3/8 16:27:41
     */
    public String get(String key) {
        return JSONObject.toJSONString(redisTemplate.opsForValue().get(key));
    }

}

spring:
  redis:
    database: 0
    host: 127.0.0.1
    port: 6379