How can I have JAX-RS return a Java 8 LocalDateTime property as a JavaScript-style Date String?

Question

I created a RESTful web service using JAX-RS method annotations:

@GET
@Path(\"/test\")
@Produces(MediaType.APPLICATION_JSON)
public MyThing test()
{
    MyTh         


        

Answer 1

I don't remember the exact details of why I did this but I got it working with the following dependencies:

  com.fasterxml.jackson.core
  jackson-databind
  2.4.2
  provided


  com.fasterxml.jackson.datatype
  jackson-datatype-jsr310
  2.4.2

And the provider below:

@Provider
@Produces(MediaType.APPLICATION_JSON)
public class JacksonContextResolver implements ContextResolver {
  private static final ObjectMapper om = init();

  @Override public ObjectMapper getContext(Class objectType) {
    return om;
  }

  private static ObjectMapper init() {
    ObjectMapper om = new ObjectMapper();
    om.registerModule(new JavaTimeModule());
    return om;
  }
}

Note that you can also play with the following flag:

om.configure(WRITE_DATES_AS_TIMESTAMPS, true/false);

(the actual class has more stuff in it but I believe it is irrelevant to this answer).