Json Question posted in
Our archive of expertly curated questions and answers provides insights and solutions to common problems related to this popular data interchange format. From parsing and manipulating JSON data to integrating it with various programming languages and web services, our archive has got you covered. Start exploring today and take your JSON skills to the next level

Json – Why LocalDateTime is serialized as array when return as ReponseBody in springboot?

I want to get the dates in a format of dd/MM/yyyy
so,I wrote this code first:

@GetMapping("/testAjax.json")
public ResponseBody<?> AjaxResponse testAjax(){
AjaxResponse response = new AjaxResponse();
DateTimeTest test = new DateTimeTest();
test.setDateTime(LocalDateTime.now());

response.addResponse("date", LocalDateTime.now());
response.addResponse("test", test);
return response;
}`

and I got this response:

{"status":false,"response":{"date":[2024,10,21,11,12,20,417960408],"test":{"dateTime":[2024,10,21,11,12,20,417940363]}}}

Tried by adding

@Bean
    public MappingJackson2HttpMessageConverter mappingJackson2HttpMessageConverter() {
        MappingJackson2HttpMessageConverter jsonConverter = new MappingJackson2HttpMessageConverter();
        ObjectMapper mapper = new ObjectMapper();

        JavaTimeModule module = new JavaTimeModule();
        mapper.registerModule(module);
        mapper.disable(SerializationFeature.WRITE_DATES_AS_TIMESTAMPS);
        DateTimeFormatter formatter = DateTimeFormatter.ofPattern("dd/MM/yyyy");
        module.addSerializer(LocalDateTime.class, new LocalDateTimeSerializer(formatter));
        mapper.configure(SerializationFeature.WRITE_DATES_AS_TIMESTAMPS, false);
        jsonConverter.setObjectMapper(mapper);
        return jsonConverter;
    }
    

    @Override
    public void configureMessageConverters(List<HttpMessageConverter<?>> converters) {
        converters.add(mappingJackson2HttpMessageConverter());
    }

But not working,

Tags:

2

Answers


  1. 0

    maybe this code solve your problem:

    String result=DateTimeFormatter.ofPattern("dd/MM/yyyy").format(localDateTime);
    Login or Signup to reply.
  2. 0

    I remember encountering this issue before especially when i comes to timestamps and date types in Restful api response … ,The best thing you can do is to serialize your attributes of date and time by JsonFormat in your entity:

        @JsonFormat(shape = JsonFormat.Shape.STRING, pattern = "dd/MM/yyyy")
    private LocalDateTime date;

    creating a Date class mapper is no longer required in Spring Boot since the auto-configuration manager that automatically but in you really need to serialize and deserialize Localedate manually try this :

    @Configuration
public class JacksonConfig {

    @Bean
    public ObjectMapper objectMapper() {
        ObjectMapper mapper = new ObjectMapper();
        JavaTimeModule module = new JavaTimeModule();

        module.addSerializer(LocalDateTime.class, 
            new com.fasterxml.jackson.datatype.jsr310.ser.LocalDateTimeSerializer(
                DateTimeFormatter.ofPattern("dd/MM/yyyy")
            ));
        
        module.addDeserializer(LocalDateTime.class, 
            new com.fasterxml.jackson.datatype.jsr310.deser.LocalDateTimeDeserializer(
                DateTimeFormatter.ofPattern("dd/MM/yyyy")
            ));
        
        mapper.registerModule(module);
        mapper.disable(SerializationFeature.WRITE_DATES_AS_TIMESTAMPS);
        return mapper;
    }
}
    Login or Signup to reply.
Please signup or login to give your own answer.

Back To Top
Search