spring-data-redis Jackson序列化 [英] spring-data-redis Jackson serialization
问题描述
我正在尝试使用spring-data-redis的Jackson序列化功能。我正在构建一个ObjectMapper并使用GenericJackson2JsonRedisSerializer作为redisTemplate的序列化器:
I'm attempting to use the Jackson serialization feature of spring-data-redis. I am building a ObjectMapper and using the GenericJackson2JsonRedisSerializer as the serializer for the redisTemplate:
@Configuration
public class SampleModule {
@Bean
public ObjectMapper objectMapper() {
return Jackson2ObjectMapperBuilder.json()
.serializationInclusion(JsonInclude.Include.NON_NULL) // Don’t include null values
.featuresToDisable(SerializationFeature.WRITE_DATES_AS_TIMESTAMPS) //ISODate
.build();
}
@Bean
public RedisTemplate getRedisTemplate(ObjectMapper objectMapper, RedisConnectionFactory redisConnectionFactory){
RedisTemplate redisTemplate = new RedisTemplate();
redisTemplate.setDefaultSerializer(new GenericJackson2JsonRedisSerializer(objectMapper));
redisTemplate.setConnectionFactory(redisConnectionFactory);
return redisTemplate;
}
}
我有一个SampleBean我正在尝试保存:
I have a SampleBean I am attempting to save:
@RedisHash("sampleBean")
public class SampleBean {
@Id
String id;
String value;
Date date;
public SampleBean(String value, Date date) {
this.value = value;
this.date = date;
}
}
以及该bean的存储库:
And a repository for that bean:
public interface SampleBeanRepository extends CrudRepository {
}
然后我尝试将bean写入Redis:
I am then trying to write the bean to Redis:
ConfigurableApplicationContext context = SpringApplication.run(SampleRedisApplication.class, args);
SampleBean helloSampleBean = new SampleBean("hello", new Date());
ObjectMapper objectMapper = context.getBean(ObjectMapper.class);
logger.info("Expecting date to be written as: " + objectMapper.writeValueAsString(helloSampleBean.date));
SampleBeanRepository repository = context.getBean(SampleBeanRepository.class);
repository.save(helloSampleBean);
context.close();
我希望redisTemplate使用Serializer在SampleBean中写入Date作为一个时间戳,但它写成一个long。
I expect the redisTemplate to use the Serializer to write the Date inside of the SampleBean as a Timestamp, however it is written as a long.
相关的spring-data-redis引用: http://docs.spring.io/spring-data/data-redis/docs/current/ reference / html /#redis:serializer
完整代码示例: https://github.com/bandyguy/spring-redis-jackson-sample-broken
The relevant spring-data-redis reference: http://docs.spring.io/spring-data/data-redis/docs/current/reference/html/#redis:serializer Full code sample: https://github.com/bandyguy/spring-redis-jackson-sample-broken
推荐答案
模板使用的序列化程序/映射器不会影响存储库使用的序列化程序/映射程序,因为存储库直接使用转换器 byte []
进行操作基于域类型元数据读/写数据的实现。
The serializer/mapper used by the template does not affect the one used by the repository since the repository directly operates upon the byte[]
using Converter
implementations for reading/writing data based on domain type metadata.
请参考哈希映射对象参考手册的一部分,用于指导如何编写和注册自定义转换器
。
Please refer to the Object to Hash Mapping section of the reference manual for guidance how to write and register a custom Converter
.
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