SpringBoot——》更改Redis序列化方式

推荐链接：
    总结——》【Java】
    总结——》【Mysql】
    总结——》【Redis】
    总结——》【Kafka】
    总结——》【Spring】
    总结——》【SpringBoot】
    总结——》【MyBatis、MyBatis-Plus】
    总结——》【Linux】
    总结——》【MongoDB】
    总结——》【Elasticsearch】

一、序列化方式

1. GenericJackson2JsonRedisSerializer
2. GenericToStringSerializer
3. Jackson2JsonRedisSerializer
4. JdkSerializationRedisSerializer（默认使用）
5. StringRedisSerializer
6. 自定义 Serializer

二、使用默认序列化方式

1、代码示例

package com.xiaoxian.demo.controller;

import com.alibaba.fastjson.JSON;
import com.xiaoxian.demo.domain.User;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

@RestController
public class RedisTestController {

    @Autowired
    RedisTemplate redisTemplate;


    @GetMapping("/redis/test1")
    public void test1() {
        List<User> list = new ArrayList<>();
        User user = new User();
        user.setId(1);
        user.setName("测试");
        list.add(user);
        redisTemplate.opsForValue().set("strTest1", JSON.toJSONString(list));

        Map<String, Object> map = new HashMap<>(2);
        map.put("id", 1);
        map.put("name", "测试");
        redisTemplate.opsForHash().putAll("mapTest1", map);
    }
}

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2、访问接口

http://127.0.0.1:8080/redis/test

3、结果示例

三、更改序列化方式

1、代码示例

package com.xiaoxian.demo.config;

import com.fasterxml.jackson.annotation.JsonAutoDetect;
import com.fasterxml.jackson.annotation.JsonInclude;
import com.fasterxml.jackson.annotation.PropertyAccessor;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.SerializationFeature;
import com.fasterxml.jackson.datatype.jsr310.JavaTimeModule;
import com.fasterxml.jackson.datatype.jsr310.deser.LocalDateDeserializer;
import com.fasterxml.jackson.datatype.jsr310.deser.LocalDateTimeDeserializer;
import com.fasterxml.jackson.datatype.jsr310.ser.LocalDateSerializer;
import com.fasterxml.jackson.datatype.jsr310.ser.LocalDateTimeSerializer;
import org.springframework.context.annotation.Bean;
import org.springframework.data.redis.connection.RedisConnectionFactory;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.data.redis.serializer.Jackson2JsonRedisSerializer;
import org.springframework.data.redis.serializer.StringRedisSerializer;
import org.springframework.stereotype.Component;

import java.time.LocalDate;
import java.time.LocalDateTime;
import java.time.format.DateTimeFormatter;

@Component
public class RedisConfig {
    @Bean
    public RedisTemplate redisTemplate(RedisConnectionFactory redisConnectionFactory) {
        RedisTemplate redisTemplate = new RedisTemplate();
        redisTemplate.setConnectionFactory(redisConnectionFactory);

        // key的序列化方式
        StringRedisSerializer stringRedisSerializer = new StringRedisSerializer();

        // value的序列化方式
        Jackson2JsonRedisSerializer jackson2JsonRedisSerializer = new Jackson2JsonRedisSerializer(Object.class);

        // 创建ObjectMapper对象，基于此对象进行序列化和反序列化
        ObjectMapper objectMapper = new ObjectMapper();
        objectMapper.setVisibility(PropertyAccessor.ALL, JsonAutoDetect.Visibility.ANY);
        objectMapper.enableDefaultTyping(ObjectMapper.DefaultTyping.NON_FINAL);

        //LocalDatetime序列化
        JavaTimeModule timeModule = new JavaTimeModule();
        timeModule.addDeserializer(LocalDate.class, new LocalDateDeserializer(DateTimeFormatter.ofPattern("yyyy-MM-dd")));
        timeModule.addDeserializer(LocalDateTime.class, new LocalDateTimeDeserializer(DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss")));
        timeModule.addSerializer(LocalDate.class, new LocalDateSerializer(DateTimeFormatter.ofPattern("yyyy-MM-dd")));
        timeModule.addSerializer(LocalDateTime.class, new LocalDateTimeSerializer(DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss")));

        objectMapper.registerModule(timeModule);

        objectMapper.disable(SerializationFeature.WRITE_DATES_AS_TIMESTAMPS);
        //对象属性值为null时,不进行序列化存储
        objectMapper.setSerializationInclusion(JsonInclude.Include.NON_NULL);
        jackson2JsonRedisSerializer.setObjectMapper(objectMapper);

        // 设置序列化方式
        redisTemplate.setKeySerializer(stringRedisSerializer);
        redisTemplate.setValueSerializer(jackson2JsonRedisSerializer);

        redisTemplate.setHashKeySerializer(stringRedisSerializer);
        redisTemplate.setHashValueSerializer(jackson2JsonRedisSerializer);

        // 更新RedisTemplate对象的默认配置
        redisTemplate.afterPropertiesSet();
        return redisTemplate;
    }
}
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2、访问接口

http://127.0.0.1:8080/redis/test

3、结果示例

四、自定义序列化方式