Volley post json

Mobile Android
#1

Pessoal,

estou fazendo um metodo para consumir um ws (method: post, application/json)

protected void onCreate(Bundle savedInstanceState)
	{
		super.onCreate(savedInstanceState);
		setContentView(R.layout.calendario);
		
		try 
		{
			Map<String, String> dados = new HashMap<String, String>();
			dados.put("idTurma", "60");
			JSONObject jsonBody = new JSONObject(dados);
			
			JsonObjectRequest request = new JsonObjectRequest(
				    Method.POST, URL, jsonBody,
				    new Response.Listener<JSONObject>() {
				        @Override
				        public void onResponse(JSONObject response) {
				            Toast.makeText(Calendario.this, "response: " + response, Toast.LENGTH_LONG).show();
				        }
				    },
				    new Response.ErrorListener() {
				        @Override
				        public void onErrorResponse(VolleyError error) {
				        	Toast.makeText(Calendario.this, "error: " + error.getMessage(), Toast.LENGTH_LONG).show();
				        }
				    })
				    {
				        @Override
				        protected Map<String,String> getParams() 
				        {
				            params = new HashMap<String, String>();
				            params.put("idTurma", "60");
				            return params;
				        }

				        @Override
				        public Map<String, String> getHeaders() throws AuthFailureError {
				        	HashMap<String, String> headers = new HashMap<String, String>();
				        	//headers.put("Content-Type", "text/plain");
				            //headers.put("Content-Type", "application/json");
				        	headers.put("Content-Type", "application/x-www-form-urlencoded, application/json; charset=utf-8");
				        	//headers.put("Content-Type", "application/x-www-form-urlencoded");
				            return headers;
				        }
				    };
				    Volley.newRequestQueue(this).add(request);
		}
		catch (Exception e) 
		{
			e.printStackTrace();
		}

Mas dá o seguinte erro:

Advertência:   StandardWrapperValve[br.com.bkids.rest.ApplicationConfig]: Servlet.service() for servlet br.com.bkids.rest.ApplicationConfig threw exception
org.glassfish.jersey.message.internal.HeaderValueException: Too many "Content-Type" header values: "[application/x-www-form-urlencoded, application/json; charset=utf-8, application/json; charset=utf-8]"
	at org.glassfish.jersey.message.internal.InboundMessageContext.singleHeader(InboundMessageContext.java:301)
	at org.glassfish.jersey.message.internal.InboundMessageContext.getMediaType(InboundMessageContext.java:427)
	at org.glassfish.jersey.servlet.WebComponent.filterFormParameters(WebComponent.java:482)
	at org.glassfish.jersey.servlet.WebComponent.service(WebComponent.java:303)
	at org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:372)
	at org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:335)

Lembrando que já tentei enviar sem Contenty-Type, tentei enviar apenas “application/json”

#2 
Too many "Content-Type" header values: "[application/x-www-form-urlencoded, application/json; charset=utf-8, application/json; charset=utf-8]"

Remova e teste.

headers.put("Content-Type", "application/x-www-form-urlencoded, application/json; charset=utf-8");
#3

se eu remover, também da erro:

Advertência:   StandardWrapperValve[ApplicationConfig]: Servlet.service() for servlet ApplicationConfig threw exception
java.lang.IllegalStateException: The @FormParam is utilized when the content type of the request entity is not application/x-www-form-urlencoded
	at org.glassfish.jersey.server.internal.inject.FormParamValueFactoryProvider$FormParamValueFactory.ensureValidRequest(FormParamValueFactoryProvider.java:175)
	at org.glassfish.jersey.server.internal.inject.FormParamValueFactoryProvider$FormParamValueFactory.getForm(FormParamValueFactoryProvider.java:159)
#4

Considerando que está tudo certo com seu servidor Jersey…

Tente fazer assim:

headers.put("Content-Type", "application/x-www-form-urlencoded");