REST POST controller saying: Could not read JSON: No content to map due to end-of-input

Question

I\'m doing an integration test against a REST controller POST handler. Well, I\'m trying to.

It gives me the HttpMessageNotReadableException exception: Could not rea

Answer 1

In my opinion the problem is with content format. Your endpoint expect that data will be sent as application/json but in test you send it as application/x-www-form-urlencoded (it doesn't matter that you set proper content type header in request). Try to send admin object in json format (as a body of a request):

{
 "firstname" : "Stephane",
 "lastname" : "Eybert",
 "login" : "stephane",
 "password" : "toto"
}

BTW the /admin/crud does not fallow REST resource addressing rules, you should change it to /admin. The crud (CREATE, READ, UPDATE, DELETE) will map to HTTP methods (POST, GET, PUT, DELETE)

Answer 2

I replaced the .param() methods in favor of the .content() one:

        post("/admin/crud").headers(httpHeaders)
        .contentType(MediaType.APPLICATION_JSON)
        .accept(MediaType.APPLICATION_JSON)
        .content("{ \"firstname\" : \"" + admin0.getFirstname() + "\", \"lastname\" : \"" + admin0.getLastname() + "\", \"email\" : \"" + admin0.getEmail() + "\", \"login\" : \"" + admin0.getLogin() + "\", \"password\" : \"" + admin0.getPassword() + "\", \"passwordSalt\" : \"" + admin0.getPasswordSalt() + "\" }")
    ).andDo(print())
    .andExpect(status().isCreated())
    .andExpect(jsonPath("$.firstname").value(admin0.getFirstname()))
    .andExpect(jsonPath("$.lastname").value(admin0.getLastname()))
    .andExpect(jsonPath("$.email").value(admin0.getEmail()))
    .andExpect(jsonPath("$.login").value(admin0.getLogin()))
    .andExpect(jsonPath("$.password").value(admin0.getPassword()))
    .andExpect(jsonPath("$.passwordSalt").value(admin0.getPasswordSalt()))
    .andReturn();

And it now works as expected.