SpringBoot中Redis序列化配置全过程

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

@Configuration
public class RedisConfig {

    @Bean
    public RedisTemplate<String, Object> redisTemplate(RedisConnectionFactory factory) {
        RedisTemplate<String, Object> template = new RedisTemplate<>();
        template.setConnectionFactory(factory);

        // 使用Jackson序列化Value
        ObjectMapper om = new ObjectMapper();
        om.setVisibility(PropertyAccessor.ALL, JsonAutoDetect.Visibility.ANY);
        om.activateDefaultTyping(LaissezFaireSubTypeValidator.instance, 
            ObjectMapper.DefaultTyping.NON_FINAL);

        GenericJackson2JsonRedisSerializer serializer = 
            new GenericJackson2JsonRedisSerializer(om);

        // Key使用String序列化
        template.setKeySerializer(RedisSerializer.string());
        template.setHashKeySerializer(RedisSerializer.string());
        
        // Value使用JSON序列化
        template.setValueSerializer(serializer);
        template.setHashValueSerializer(serializer);

        template.afterPropertiesSet();
        return template;
    }
}

om.disable(SerializationFeature.WRITE_DATES_AS_TIMESTAMPS);
om.registerModule(new JavaTimeModule());

# Redis CLI查看JSON数据
127.0.0.1:6379> GET user:1001 | jq

List<User> users = redisTemplate.opsForValue()
    .get("users", new TypeReference<List<User>>(){});

om.disable(SerializationFeature.FAIL_ON_SELF_REFERENCES);