error sending data to server using volley library

问题

I have not used volley library much. i have read the tutorials. i want to send data to a url which which will enter that data in database. i have tried the following code but its not working. data is not entered in the database.

  String url = "http://tipseducation.com/system/eadmin/insertschedule/";
        StringRequest sr = new StringRequest(Request.Method.POST, url, new Response.Listener<String>() {
            @Override
            public void onResponse(String response) {
                //Valid Response
            }
        }, new Response.ErrorListener() {
            @Override
            public void onErrorResponse(VolleyError error) {
                //error message
            }
        }) {
            @Override
            public Map<String, String> getHeaders() throws AuthFailureError {

                Map<String, String> params = new HashMap<>();
                params.put("appt_name", ed_name);
                params.put("appt_email", ed_email);
                params.put("appt_contact", ed_contact);
                params.put("appt_date", ed_date);
                params.put("appt_time", ed_time);
                params.put("appt_service", ed_spinner);
                return params;
            }
        };

can anyone please help me. iam new to this

回答1:

Instead of getHeaders, you should use getBody for your POST request.

You can refer to my following working sample code (replace my JSONObject and Url by yours). Hope this helps!

        ...   
        try {
            RequestQueue queue = Volley.newRequestQueue(this);
            jsonBody = new JSONObject();
            jsonBody.put("Title", "Android Volley POST DATA Demo");
            jsonBody.put("Author", "BNK");
            jsonBody.put("Date", "2015/09/17");
            requestBody = jsonBody.toString();

            StringRequest stringRequest = new StringRequest(1, url, new Response.Listener<String>() {
                @Override
                public void onResponse(String response) {
                    // do something...
                }
            }, new Response.ErrorListener() {
                @Override
                public void onErrorResponse(VolleyError error) {
                    // do something...
                }
            }) {
                @Override
                public String getBodyContentType() {
                    return "application/json; charset=utf-8";
                }

                @Override
                public byte[] getBody() throws AuthFailureError {
                    try {
                        return requestBody == null ? null : requestBody.getBytes("utf-8");
                    } catch (UnsupportedEncodingException uee) {
                        e.printStackTrace();
                        return null;
                    }
                }
            };
            queue.addToRequestQueue(stringRequest);
        } catch (JSONException e) {
            e.printStackTrace();
        }
        ...

来源：https://stackoverflow.com/questions/32600209/error-sending-data-to-server-using-volley-library