I understand that the post method is getting it wrong at Postman

Question

My controller

package br.com.clinicamedica.controller.especialidade;

import static org.springframework.http.HttpStatus.CONFLICT;
import static org.springframework.http.HttpStatus.OK;
import static org.springframework.http.MediaType.APPLICATION_JSON_VALUE;

import java.util.ArrayList;
import java.util.Collection;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.DeleteMapping;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.PutMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

import br.com.clinicamedica.core.EspecialidadesException;
import br.com.clinicamedica.core.especialidades.EspecialidadesConsultaService;
import br.com.clinicamedica.core.especialidades.EspecialidadesService;
import br.com.clinicamedica.core.especialidades.resource.EspecialidadeListaResource;
import br.com.clinicamedica.core.especialidades.resource.EspecialidadesResource;
import br.com.clinicamedica.utilitario.mensagem.Mensagem;
import lombok.extern.apachecommons.CommonsLog;

@CommonsLog
@RestController
@RequestMapping("/especialidades")
public class EspecialidadeController {

    @Autowired
    private EspecialidadesService especialidadesService;
    @Autowired
    private EspecialidadesConsultaService especialidadesConsultaService;
    private Collection<Mensagem> mensagens;

    @PostMapping(value = "/incluir", produces = APPLICATION_JSON_VALUE)
    public ResponseEntity<?> incluir(EspecialidadesResource resource) {
        mensagens = new ArrayList<>();
        try {
            EspecialidadesResource retorno = especialidadesService.incluir(resource, mensagens);
            return new ResponseEntity<>(retorno, OK);
        } catch (EspecialidadesException e) {
            Mensagem m = e.getMensagens().iterator().next();
            log.error(m.toString(), e);
            return new ResponseEntity<>(e.getMensagens().iterator().next(), CONFLICT);
        }
    }
}

In the Postman, when I do so, it does not work, because it is a post method, should not pass the object ?

But enough is empty

In the Postman, when I do so, it works, this example would not be of a method get ?

The methods GET are functioning normally.

  @GetMapping(value = "/buscarPeloId", produces = APPLICATION_JSON_VALUE)
  public ResponseEntity<?> buscarPeloId(Long id) {
      EspecialidadesResource retorno = especialidadesConsultaService.buscarPeloId(id);
      return new ResponseEntity<>(retorno, OK);
  }

What can it be ?

Answer 1

Probably what is missing for you is to indicate your POST Header:

1. Next to the tab Body, select Headers.
2. In Key, write Content-Type.
3. In Value, write application/json.
4. Send us your post.

The Content-Type shall be indicated as application/json so that the backend can correctly interpret the request. As MDN documentation:

The Content-Type header is used to indicate the file type of the recourse.

In requests, such as POST or PUT, the client tells the server what type given that it is, in fact, being sent.