Disabling WRITE_DATES_AS_TIMESTAMPS not working? about jackson-modules-java8 HOT 10 CLOSED

If you are using swagger with spring boot and your date is Date is always getting serialised as long, 
and SerializationFeature.WRITE_DATES_AS_TIMESTAMPS & spring.jackson.serialization.write-dates-as-timestamps=false
are not helping, below solution worked for me. Add it to your class annotated with @SpringBootApplication:

@Autowired
private RequestMappingHandlerAdapter handlerAdapter;

@EventListener
public void handleContextRefresh(ContextRefreshedEvent event) {
    handlerAdapter
            .getMessageConverters()
            .stream()
            .forEach(c -> {
                if (c instanceof MappingJackson2HttpMessageConverter) {
                    MappingJackson2HttpMessageConverter jsonMessageConverter = (MappingJackson2HttpMessageConverter) c;
                    ObjectMapper objectMapper = jsonMessageConverter.getObjectMapper();
                    objectMapper.disable(SerializationFeature.WRITE_DATES_AS_TIMESTAMPS);
                }
            });
}

Actual issue: SerializationFeature.WRITE_DATES_AS_TIMESTAMPS value is not read from spring configuration file which need to be set false in order 
to covert long value while serialisation.

from jackson-modules-java8.

Where do you put this in your code?

ObjectMapper mapper = new ObjectMapper()
.registerModule(new ParameterNamesModule())
.registerModule(new Jdk8Module())
.registerModule(new JavaTimeModule())
.configure(SerializationFeature.WRITE_DATES_AS_TIMESTAMPS, false);

Thanks!

from jackson-modules-java8.

That's most likely a problem coming from spring configuration.

• Check there is no version conflict (pulling different version of jackson)
• Use application properties to configure jackson (spring.jackson.serialization.write-dates-as-timestamps=false)
• If the 2 solutions above do not work, start removing your @Enable___ annotations one by one, they sometime override your configuration.

from jackson-modules-java8.

Thanks.
#2 (adding spring.jackson.serialization.write-dates-as-timestamps=false to application properties) fixed it. I I guess spring jackson properties overloads the objectMapper of the Jackson Configuration.

from jackson-modules-java8.

Assuming this gets resolved as described, as Spring config is out of Jackson's hands.
But if Jackson-side problems exist, may be reopened with a standalone test.

from jackson-modules-java8.

Nowhere, you aren't supposed to instantiate your ObjectMapper yourself if you are using spring-boot. See my earlier answer.

from jackson-modules-java8.

Hey guys, sorry for reopening this issue.

I've tried all of the solutions above to solve this problem but my Spring Controller keeps serializing LocalDateTime with it's properties instead of YYYY-MM-DD...

I think it could be a version conflict since I'm using other dependencies, but I don't know how to check for this. Can anyone shine a light on how can I do it?

from jackson-modules-java8.

Make sure you have this in your application.yml:

spring:
jackson:
serialization:
write-dates-as-timestamps: false

Keep the 3 noted in project title page in dependencies:
"com.fasterxml.jackson.module:jackson-module-parameter-names:{version}"
"com.fasterxml.jackson.datatype:jackson-datatype-jdk8:{version}"
"com.fasterxml.jackson.datatype:jackson-datatype-jsr310:{version}"

from jackson-modules-java8.

Actual issue: SerializationFeature.WRITE_DATES_AS_TIMESTAMPS value is not read from spring configuration

Should there be, or is there, an issue filed with Spring for this?

from jackson-modules-java8.

@cogito-abhijeet
Hi, your solution worked but is there any way to achieve this without the EventListener annotation as we have certain restriction on startup time and I was looking for a way to configure this without using the EventListener?

Actual issue: SerializationFeature.WRITE_DATES_AS_TIMESTAMPS value is not read from spring configuration file which need to be set false in order 
to covert long value while serialisation.

Is this issue reported to Spring?

from jackson-modules-java8.