Redis 在Springboot 中反序列化 LocalDateTime 时报错
该问题就是jackson2无法反序列化LocalDateTime的问题
在redisconfig增加om.registerModule(new JavaTimeModule());

@Configuration
public class RedisConfig {

    /**
     * redisTemplate相关配置
     * @param redisConnectionFactory redis链接工厂
     */
    @Bean
    public RedisTemplate<String, Object> redisTemplate(RedisConnectionFactory redisConnectionFactory) {
        // 配置redisTemplate
        RedisTemplate<String, Object> redisTemplate = new RedisTemplate<>();
        redisTemplate.setConnectionFactory(redisConnectionFactory);
        // 使用StringRedisSerializer来序列化和反序列化redis的key值
        StringRedisSerializer stringSerializer = new StringRedisSerializer();
        Jackson2JsonRedisSerializer<Object> jackson2JsonRedisSerializer = serializer();
        // key序列化
        redisTemplate.setKeySerializer(stringSerializer);
        // value序列化
        redisTemplate.setValueSerializer(jackson2JsonRedisSerializer);
        // Hash key序列化
        redisTemplate.setHashKeySerializer(stringSerializer);
        // Hash value序列化
        redisTemplate.setHashValueSerializer(jackson2JsonRedisSerializer);
        redisTemplate.afterPropertiesSet();
        return redisTemplate;
    }

    /**
     * 配置Jackson2JsonRedisSerializer序列化策略
     */
    private Jackson2JsonRedisSerializer<Object> serializer() {
        // 设置序列化
        Jackson2JsonRedisSerializer<Object> jackson2JsonRedisSerializer = new Jackson2JsonRedisSerializer<>(Object.class);
        ObjectMapper om = new ObjectMapper();
        // 设置在反序列化时忽略在JSON字符串中存在，而在Java中不存在的属性
        om.disable(SerializationFeature.WRITE_DATES_AS_TIMESTAMPS);
        // 解决jackson2无法反序列化LocalDateTime的问题
        om.registerModule(new JavaTimeModule());
        om.activateDefaultTyping(om.getPolymorphicTypeValidator(), ObjectMapper.DefaultTyping.NON_FINAL);
        // 不存在的字段,不被序列化
        om.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false);
        jackson2JsonRedisSerializer.setObjectMapper(om);
        return jackson2JsonRedisSerializer;
    }
}