Redis能够存储java对象吗？
答案：是可以，但是你对象必须要序列化。

redis没有办法把一个没有序列化的对象存储到redis中。

package com.kuangstudy.entiy;

import lombok.Data;


public class User implements java.io.Serializable{

    private Integer id;
    private String nickname;
    private String password;

    public Integer getId() {
        return id;
    }

    public void setId(Integer id) {
        this.id = id;
    }

    public String getNickname() {
        return nickname;
    }

    public void setNickname(String nickname) {
        this.nickname = nickname;
    }

    public String getPassword() {
        return password;
    }

    public void setPassword(String password) {
        this.password = password;
    }
}

这样太麻烦了，并且存储中文会有乱码，那如何解决呢？只能重新定义一个redisTemplate

package com.kuangstudy.config;
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.serializer.GenericJackson2JsonRedisSerializer;
import org.springframework.data.redis.serializer.StringRedisSerializer;

@Configuration
public class RedisConfiguration {
    /**
     * @return org.springframework.data.redis.core.RedisTemplate<java.lang.String, java.lang.Object>
     * @Author 徐柯
     * @Description 改写redistemplate序列化规则
     * @Date 13:20 2021/5/20
     * @Param [redisConnectionFactory]
     **/
    @Bean
    public RedisTemplate<String, Object> redisTemplate(RedisConnectionFactory redisConnectionFactory) {
        RedisTemplate<String, Object> redisTemplate = new RedisTemplate<>();
        redisTemplate.setConnectionFactory(redisConnectionFactory);
        // 创建一个json的序列化方式
        GenericJackson2JsonRedisSerializer jackson2JsonRedisSerializer = new GenericJackson2JsonRedisSerializer();
        // 设置value用jackjson进行处理
        redisTemplate.setValueSerializer(jackson2JsonRedisSerializer);
        // 设置key用string序列化方式
        redisTemplate.setKeySerializer(new StringRedisSerializer());
        redisTemplate.setHashKeySerializer(new StringRedisSerializer());
        redisTemplate.setHashValueSerializer(jackson2JsonRedisSerializer);
        redisTemplate.afterPropertiesSet();
        return redisTemplate;
    }
}