错误JSONObject无法在Android中转换为JSONArray？

Question

Here I am trying to send my json array to mysql database.When I run this code I get this error:

com.android.volley.ParseError: org.json.JSONException: Value {"msg":false,"status":false} of type org.json.JSONObject cannot be converted to JSONArray

And here's my code:

private void insertToDb() {
        billType = (invEstSwitch.isChecked() ? textViewEstimate : textViewInvoice)
                .getText().toString();
        try {
            jsonObject.put("custInfo", custSelected.toString());
            jsonObject.put("invoiceNo", textViewInvNo.getText().toString());
            jsonObject.put("barcode", barCode.getText().toString());
            jsonObject.put("desc", itemDesc.getText().toString());
            jsonObject.put("weight", weightLine.getText().toString());
            jsonObject.put("rate", rateAmount.getText().toString());
            jsonObject.put("makingAmt", makingAmount.getText().toString());
            jsonObject.put("net_rate", netRate.getText().toString());
            jsonObject.put("itemTotal", itemtotal.getText().toString());
            jsonObject.put("vat", textViewVat.getText().toString());
            jsonObject.put("sum_total", textViewSum.getText().toString());
            jsonObject.put("bill_type", billType);
            jsonObject.put("date", textViewCurrentDate.getText().toString());


        } catch (JSONException e) {
            e.printStackTrace();
        }
        try {
            itemSelectedJson.put(index, jsonObject);
            index++;
        } catch (JSONException e) {
            e.printStackTrace();
        }

        final JsonArrayRequest arrayRequest = new JsonArrayRequest(Request.Method.POST, INVEST_URL, itemSelectedJson, new Response.Listener<JSONArray>() {
            @Override
            public void onResponse(JSONArray response) {
                Log.d("RESPONSE", response.toString());
            }
        }, new Response.ErrorListener() {
            @Override
            public void onErrorResponse(VolleyError error) {
                Log.d("JSON ERROR", error.toString());
            }
        }) {
            @Override
            public Map<String, String> getHeaders() throws AuthFailureError {
                Map<String, String> headers = new HashMap<>();
                headers.put("Content-Type", "application/json; charset=utf-8");
                headers.put("Accept", "application/json");
                return headers;
            }
        };

        final RequestQueue queue = Volley.newRequestQueue(this);
        queue.add(arrayRequest);

    }

I also tried displaying the json array inside a text view.It displays the following json array.

[
    {
        "custInfo": "Ujwal 9975022560",
        "rate": "24000",
        "weight": "21.00000",
        "desc": "GENTS ANGTHI 22k NO STONE",
        "makingAmt": "200",
        "sum_total": "RS.104188.92",
        "vat": "RS.2042.92",
        "itemTotal": "51073",
        "barcode": "BQSP78BB",
        "net_rate": "24200",
        "date": "2015-12-01",
        "invoiceNo": "1",
        "bill_type": "Estimate"
    },
    {
        "custInfo": "Ujwal 9975022560",
        "rate": "24000",
        "weight": "21.00000",
        "desc": "GENTS ANGTHI 22k NO STONE",
        "makingAmt": "200",
        "sum_total": "RS.104188.92",
        "vat": "RS.2042.92",
        "itemTotal": "51073",
        "barcode": "BQSP78BB",
        "net_rate": "24200",
        "date": "2015-12-01",
        "invoiceNo": "1",
        "bill_type": "Estimate"
    }
]

I tested this json array on json lint.It is a valid JSON. As suggested I changed to json object request.Now I am getting a Response it say RESPONSE: {"msg":false,"status":false} I get it at public void onResponse(JSONObject response) { Log.d("RESPONSE", response.toString()); } public void onResponse(JSONObject response) { Log.d("RESPONSE", response.toString()); } what does that mean?

private void insertToDb() {
        billType = (invEstSwitch.isChecked() ? textViewEstimate : textViewInvoice)
                .getText().toString();
        try {
            jsonObject.put("custInfo", custSelected.toString());
            jsonObject.put("invoiceNo", textViewInvNo.getText().toString());
            jsonObject.put("barcode", barCode.getText().toString());
            jsonObject.put("desc", itemDesc.getText().toString());
            jsonObject.put("weight", weightLine.getText().toString());
            jsonObject.put("rate", rateAmount.getText().toString());
            jsonObject.put("makingAmt", makingAmount.getText().toString());
            jsonObject.put("net_rate", netRate.getText().toString());
            jsonObject.put("itemTotal", itemtotal.getText().toString());
            jsonObject.put("vat", textViewVat.getText().toString());
            jsonObject.put("sum_total", textViewSum.getText().toString());
            jsonObject.put("bill_type", billType);
            jsonObject.put("date", textViewCurrentDate.getText().toString());


        } catch (JSONException e) {
            e.printStackTrace();
        }
        try {
            itemSelectedJson.put(index, jsonObject);
            index++;
        } catch (JSONException e) {
            e.printStackTrace();
        }
        JSONObject jsonobj = new JSONObject();
        try {
            jsonobj.put("itemarray",itemSelectedJson);
        } catch (JSONException e) {
            e.printStackTrace();
        }

        final JsonObjectRequest objectRequest = new JsonObjectRequest(Request.Method.POST, INVEST_URL, jsonobj, new Response.Listener<JSONObject>() {
            @Override
            public void onResponse(JSONObject response) {
                Log.d("RESPONSE", response.toString());

            }
        }, new Response.ErrorListener() {
            @Override
            public void onErrorResponse(VolleyError error) {
                Log.d("JSONERROR",error.toString());
            }
        }){
            @Override
            public Map<String, String> getHeaders() throws AuthFailureError {
                Map<String, String> headers = new HashMap<>();
                headers.put("Content-Type", "application/json; charset=utf-8");
                headers.put("Accept", "application/json");
                return headers;
            }
        };
 final RequestQueue queue = Volley.newRequestQueue(this);
        queue.add(objectRequest);

    }

Answer 1

As in log:

com.android.volley.ParseError: org.json.JSONException: Value {"msg":false,"status":false}

Means Server is returning JSONObject instead of JSONArray as response String.

So, use JsonObjectRequest instead of JsonArrayRequest to make Volley request.

Answer 2

POST a JSONArray doesn't mean you need to call a JsonArrayRequest request.

Request depends on the type of the response you are expecting. You have to check the object type returned by your webservice and then adapt your request according to that.

In your specific case, the error log says you need to use a JsonObjectRequest instead of JsonArrayRequest.

Answer 3

And I final got it to work this is my current code

 private void insertToDb() throws  JSONException{
        //createJsonArray();
        final String jsonArray = itemSelectedJson.toString().trim();

        StringRequest stringRequest = new StringRequest(Request.Method.POST, INVEST_URL,


           new Response.Listener<String>() {
                @Override
                public void onResponse(String response) {
                    display.setText("This is the "+response);
                    Toast.makeText(AddInvEst.this, "This is the response"+response, Toast.LENGTH_LONG).show();
                    Log.d("RESPONSE", response.toString().trim());
                }
            },
            new Response.ErrorListener() {
                @Override
                public void onErrorResponse(VolleyError error) {

                }
            }){
        @Override
        protected Map<String, String> getParams() throws AuthFailureError {

            Map<String,String> params = new HashMap<>();
            params.put(KEY_JSONARRAY,jsonArray);
            return params;
        }
    };

    RequestQueue requestQ =Volley.newRequestQueue(this);
    requestQ.add(stringRequest);

}