Redis序列化 Java8的时间Instant、LocalDateTime、LocalDate

最新推荐文章于 2025-05-19 17:02:54 发布

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#Redis Instant

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博客提供了Redis配置相关文档链接，介绍了Redis配置Jackson所需的额外依赖，还给出了Redis完整的配置文件，聚焦于Redis配置方面的信息技术内容。

org.springframework.data.redis.serializer.SerializationException: 
Could not read JSON: Cannot construct instance of java.time.Instant (no Creators, like default construct, exist): cannot deserialize from Object value (no delegate- or property-based Creator)

文档链接

redis 配置的 jackson `ObjectMapper` 所需的额外依赖

<dependency>
    <groupId>com.fasterxml.jackson.module</groupId>
    <artifactId>jackson-module-parameter-names</artifactId>
</dependency>
<dependency>
    <groupId>com.fasterxml.jackson.datatype</groupId>
    <artifactId>jackson-datatype-jdk8</artifactId>
</dependency>
<dependency>
    <groupId>com.fasterxml.jackson.datatype</groupId>
    <artifactId>jackson-datatype-jsr310</artifactId>
</dependency>

 ObjectMapper objectMapper = new ObjectMapper()
                .registerModule(new ParameterNamesModule())
                .registerModule(new Jdk8Module())
                .registerModule(new JavaTimeModule());

Redis 完整的配置文件

@Configuration
public class RedisConfig {


    //注入一个可序列object的template
    @Bean
    public RedisTemplate<String, Object> redisTemplate(RedisConnectionFactory redisConnectionFactory) {
        Jackson2JsonRedisSerializer<Object> serializer = new Jackson2JsonRedisSerializer<>(Object.class);
        ObjectMapper objectMapper = new ObjectMapper()
                .registerModule(new ParameterNamesModule())
                .registerModule(new Jdk8Module())
                .registerModule(new JavaTimeModule()); // new module, NOT JSR310Module;
        objectMapper.setVisibility(PropertyAccessor.ALL, JsonAutoDetect.Visibility.ANY);
        objectMapper.enableDefaultTyping(ObjectMapper.DefaultTyping.NON_FINAL);
        serializer.setObjectMapper(objectMapper);

        RedisTemplate<String, Object> redisTemplate = new RedisTemplate<>();
        redisTemplate.setConnectionFactory(redisConnectionFactory);
        redisTemplate.setKeySerializer(new StringRedisSerializer());
        redisTemplate.setValueSerializer(serializer);
        redisTemplate.setHashKeySerializer(new StringRedisSerializer());
        redisTemplate.setHashValueSerializer(serializer);
        redisTemplate.afterPropertiesSet();

        return redisTemplate;
    }
}