How to get ResponseBody of @RestController as object in a MockMvc junit test?

Question

I have a simple junit test that verifies the response of a servlet endpoint.

Problem: I want to obtain the response as java object Person, and not as string/json/xml representation.

Is that possible?

@RestController
public class PersonController {
    @GetMapping("/person")
    public PersonRsp getPerson(int id) {
        //...
        return rsp;
    }   
}

@RunWith(SpringRunner.class)
@WebMvcTest(value = PersonController.class)
public class PersonControllerTest {
    @Autowired
    private MockMvc mvc;

    @Test
    public void test() {
        MvcResult rt = mvc.perform(get("/person")
                .param("id", "123")
                .andExpect(status().isOk())
                .andReturn();

        //TODO how to cast the result to (Person) p?
    }
}

Answer 1

you could deserialize it like this:

String json = rt.getResponse().getContentAsString();
Person person = new ObjectMapper().readValue(json, Person.class);

You can also @Autowire the ObjectMapper