Spring Boot JPA - OneToMany relationship causes infinite loop

Question

I have a two objects with simple @OneToMany relationship which looks as follows:

parent:

@Entity
public class ParentAccount {

  @Id
  @GeneratedValu         


        

Answer 1

I recently had this issue due to a poorly defined Jackson2HttpMessageConverter.

I had done something like the following.

@Bean
RestTemplate restTemplate(@Qualifier("halJacksonHttpMessageConverter")
                                  TypeConstrainedMappingJackson2HttpMessageConverter halConverter) {
    final RestTemplate template = new RestTemplateBuilder().build();
    halConverter.setSupportedMediaTypes(List.of(/* some media types */)); 
    final List> converters = template.getMessageConverters();
    converters.add(halConverter);
    template.setMessageConverters(converters);
    return template;
}

This caused a problem because the media types did not include all the defaults. Changing it to the following fixed the issue for me.

halConverter.setSupportedMediaTypes(
    new ImmutableList.Builder()
        .addAll(halConverter.getSupportedMediaTypes())
        .add(/* my custom media type */)
        .build()
);