While using Spring Data Rest after migrating an app to Spring Boot, I have observed that entity properties with @Id are no longer marshalled to JSON

Question

This question is related to this SO question (Spring boot @ResponseBody doesn't serialize entity id). I have observed that after migrating an app to Spring Boot and using the spring-boot-starter-data-rest dependency, my entity @Id fields are no longer marshalled in the resulting JSON.

This is my request mapping and while debugging, I can see the data isn't being changed prior to returning it, so the @Id properties are being stripped later on.

@RequestMapping(method = RequestMethod.GET, produces = {"application/json"})
public PagedResources<Receipt> receipts(Pageable pageable, PagedResourcesAssembler assembler) {
    Page<Receipt> receipts = receiptRepository.findByStorerAndCreatedDateGreaterThanEqual("003845", createdStartDate, pageable);
    PagedResources<Receipt> pagedResources = assembler.toResource(receipts, receiptResourceAssembler);
    return pagedResources;
}

Is there a setting that would allow me to keep the @Id field in the resulting JSON because my app allows the user to search by that value.

Thanks :)

Answer 1

By default Spring Data Rest does not spit out IDs. However you can selectively enable it through exposeIdsFor(..) method. You could do this in configuration, something like this

@Configuration
public static class RepositoryConfig extends
        RepositoryRestMvcConfiguration {

    @Override
    protected void configureRepositoryRestConfiguration(
            RepositoryRestConfiguration config) {
        config.exposeIdsFor(Class1.class, Class2.class);
    }
}