带标头和正文参数的排球请求

Question

I need to make an api request which.

Two headers :

1. Accept

2. Authorization

Five body params.

1. Number
2. Make
3. Model
4. Description
5. Plates

Through postman everything works great. But when i try through android app i can't get through. Note: Login through the same host works great so the setup its not the problem i think my main problem is in api call.

public void add(View view) {
        RequestQueue queue = Volley.newRequestQueue(this);
        String URL = "http://10.0.2.2:8000/api/trucks";
        StringRequest request = new StringRequest(Request.Method.POST, URL,
                new Response.Listener<String>() {
                    @Override
                    public void onResponse(String response) {
                        try {
                            JSONObject jsonObj = new JSONObject(response);
                            // parse response
                        } catch (JSONException e) {
                            e.printStackTrace();
                        }
                    }
                },
                new Response.ErrorListener() {
                    @Override
                    public void onErrorResponse(VolleyError error) {
                        NetworkResponse response = error.networkResponse;
                        String errorMsg = "";
                        if (response != null && response.data != null) {
                            String errorString = new String(response.data);
                        }
                    }
                }
        ) {

            @Override
            public Map<String, String> getHeaders() {
                HashMap<String, String> headers = new HashMap<>();
                headers.put("Accept", "application/json");
                headers.put("Authorization", "Bearer " + myToken);
                return headers;
            }

            @Override
            protected Map<String, String> getParams() {
                Map<String, String> params = new HashMap<String, String>();
                TextInputEditText number = findViewById(R.id.textInputEditTextNumber);
                TextInputEditText make = findViewById(R.id.textInputEditTextMake);
                TextInputEditText model = findViewById(R.id.textInputEditTextModel);
                TextInputEditText description = findViewById(R.id.textInputEditTextDescription);
                TextInputEditText plates = findViewById(R.id.textInputEditTextPlates);

                params.put("number", number.getText().toString());
                params.put("make", make.getText().toString());
                params.put("model", model.getText().toString());
                params.put("description", description.getText().toString());
                params.put("plates", plates.getText().toString());
                return params;
            }
        };
        queue.add(request);
    }

Edit: by Solution #1.

public void add(View view) throws JSONException {
    RequestQueue queue = Volley.newRequestQueue(this);
    TextInputEditText number = findViewById(R.id.textInputEditTextNumber);
    TextInputEditText make = findViewById(R.id.textInputEditTextMake);
    TextInputEditText model = findViewById(R.id.textInputEditTextModel);
    TextInputEditText description = findViewById(R.id.textInputEditTextDescription);
    TextInputEditText plates = findViewById(R.id.textInputEditTextPlates);

    JSONObject jsonObject = new JSONObject();
    jsonObject.put("Number", number.getText().toString());
    jsonObject.put("Make", make.getText().toString());
    jsonObject.put("Model", model.getText().toString());
    jsonObject.put("Description", description.getText().toString());
    jsonObject.put("Plates", plates.getText().toString());
    final String requestBody = jsonObject.toString();

    JsonObjectRequest jsonRequest = new JsonObjectRequest(Request.Method.POST, "http://10.0.2.2:8000/api/trucks", jsonObject,
            new Response.Listener<JSONObject>() {
        @Override
        public void onResponse(JSONObject response) {

            //now handle the response
            Toast.makeText(truck_add.this, response.toString(), Toast.LENGTH_SHORT).show();

        }
    }, new Response.ErrorListener() {
        @Override
        public void onErrorResponse(VolleyError error) {

            //handle the error
            Toast.makeText(truck_add.this, "An error occurred", Toast.LENGTH_SHORT).show();
            error.printStackTrace();
        }
    }) {    //this is the part, that adds the header to the request
        @Override
        public Map<String, String> getHeaders() {
            Map<String, String> params = new HashMap<String, String>();
            params.put("Accept", "application/json");
            params.put("Authorization", myToken);
            return params;
        }
    };
    queue.add(jsonRequest);
}

Postman :

Answer 1

When you want to pass the data through the body, you need to create a json object before string request.
try this way,
1. create a string url for request.
2. create json object for body data and pass data to it. Like,

JSONObject jsonObject= new JSONObject();  
jsonObject.put("Number", address.getNumber());  
jsonObject.put("Make", address.getMake());  
jsonObject.put("Model", address.getModel());  
jsonObject.put("Description", address.getDescription());  
jsonObject.put("Plates", address.getPlates());  
final String requestBody=jsonObject.toString();  

3. After this, apply stringRequest.
4. Now, add below lines before header method and after error method.

@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) {
                VolleyLog.wtf("Unsupported Encoding while trying to get the bytes of %s using %s", requestBody, "utf-8");
                return null;
            }  

5. In your getHeaders() method, use Content-Type for "application/json" and for Authorization you must use only token without (Bearer).
Done.

Answer 2

public void add(View view) throws JSONException {
   String URL = "http://10.0.2.2:8000/api/trucks";

   //removed views initialization from here.  
//you need to initialize views in oncreate() / oncreateView() method.  
/*first create json object in here.
then set keys as per required body format with values
*/
    JSONObject jsonObject = new JSONObject();
    jsonObject.put("Number", number.getText().toString());
    jsonObject.put("Make", make.getText().toString());
    jsonObject.put("Model", model.getText().toString());
    jsonObject.put("Description", description.getText().toString());
    jsonObject.put("Plates", plates.getText().toString());
    final String requestBody = jsonObject.toString();

 RequestQueue queue = Volley.newRequestQueue(this);

    StringRequest request = new StringRequest(Request.Method.POST, URL,
            new Response.Listener<String>() {
                @Override
                public void onResponse(String response) {
                    try {
                        JSONObject jsonObj = new JSONObject(response);
                        // parse response
                    } catch (JSONException e) {
                        e.printStackTrace();
                    }
                }
            },
            new Response.ErrorListener() {
                @Override
                public void onErrorResponse(VolleyError error) {
                    NetworkResponse response = error.networkResponse;
                    String errorMsg = "";
                    if (response != null && response.data != null) {
                        String errorString = new String(response.data);
                    }
                }
            }
    )  {    //this is the part, that adds the header to the request
//this is where you need to add the body related methods
@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) {
            VolleyLog.wtf("Unsupported Encoding while trying to get the bytes of %s 
using %s", requestBody, "utf-8");
            return null;
        } 
        @Override
        public Map<String, String> getHeaders() {
            Map<String, String> params = new HashMap<String, String>();
            params.put("Content-Type", "application/json");
            params.put("Authorization", myToken);
            return params;
        }
    };
    queue.add(jsonRequest);
}  

Put Log in every method to check which method being executed and for possible error
If there is an error after this, then post error from logcat and we will solve it quickly.