I am trying to get in my app some data and show to the user by using an HTTP POST request with Volley.
My issue is that I don't know how to get the server Body response to the request. In the code below the response is always "200" which turns to be the HTTP status code.
How can I extract the body response and manage as a string?
RequestQueue requestQueue = Volley.newRequestQueue(this);
final String requestBody = Utility.toCorrectCase(req);
//Decommentare solo per il debug
//Toast.makeText(getBaseContext(),requestBody, Toast.LENGTH_SHORT).show();
StringRequest stringRequest = new StringRequest(Request.Method.POST, url, new Response.Listener<String>() {
#Override
public void onResponse(String response) {
Log.i("VOLLEY", response);
Bitmap myBitmap = QRCode.from(response).bitmap();
qrcode.setImageBitmap(myBitmap);
ViewGroup.LayoutParams params = qrcode.getLayoutParams();
params.width = qrDisplayedSize;
params.height = qrDisplayedSize;
qrcode.setLayoutParams(params);
loadingText.setText(getString(R.string.prod_id_desc).concat(response));
qrcode.setVisibility(View.VISIBLE);
backButton.setVisibility(View.VISIBLE);
progressBar.setVisibility(View.INVISIBLE);
}
}, new Response.ErrorListener() {
#Override
public void onErrorResponse(VolleyError error) {
Log.d("VOLLEY", error.toString());
new SweetAlertDialog(getApplicationContext(), SweetAlertDialog.ERROR_TYPE)
.setTitleText("Errore comunicazione server")
.setContentText("Qualcosa non ha funzionato!\nDescrizione errore:".concat(error.toString()))
.show();
finish();
}
}) {
#Override
public String getBodyContentType() {
return "application/x-www-form-urlencoded; 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
protected Response<String> parseNetworkResponse(NetworkResponse response) {
String responseString;
responseString = String.valueOf(response.statusCode);
return Response.success(responseString, HttpHeaderParser.parseCacheHeaders(response));
}
};
requestQueue.add(stringRequest);
After days of searches, I've found out that I have not overridden correctly the networkResponse. So for everyone with my same trouble, the answer of my question is: parseNetworkResponse must be overridden to get response body in an easisest way.
#Override
protected Response<String> parseNetworkResponse(NetworkResponse response) {
if(response.statusCode==400){
new SweetAlertDialog(getApplicationContext(), SweetAlertDialog.ERROR_TYPE)
.setTitleText("Errore comunicazione server")
.setContentText("Qualcosa non ha funzionato!\nCodice errore:"+response.statusCode)
.show();
finish();
}
return super.parseNetworkResponse(response);
}
change this it works for me
#Override
protected Response < String > parseNetworkResponse(NetworkResponse response) {
String parsed;
try {
parsed = new String(response.data, HttpHeaderParser.parseCharset(response.headers));
} catch (UnsupportedEncodingException e) {
parsed = new String(response.data);
}
return Response.success(parsed, HttpHeaderParser.parseCacheHeaders(response));
}
Related
I have an API that takes a JSONArray as params and it gives a JSONObject as a response. The API is working fine but giving an error
com.android.volley.ParseError: org.json.JSONException: End of input at character 0 of
at com.android.volley.toolbox.JsonArrayRequest.parseNetworkResponse
as I receive the response.
JsonArrayRequest volleyRequest= new JsonArrayRequest(Request.Method.POST, url,
params, res -> {
try {
Log.d("TAG", "PostApiMethod: "+res);
} catch (JSONException e) {
Log.e("TAG", "PostApiMethod: ", e);
}
}, error -> {
Log.e(TAG, "PostApiMethod: ", error);
}
}) {
#Override
public String getBodyContentType() {
return "application/x-www-form-urlencoded; charset=UTF-8";
}
};
VolleySingleton.getInstance(context).addToRequestQueue(volleyRequest);
Is there any way to do this while using Volley.
you can use StringRequest and convert JSONArray to String as parameters and get result as String and map string to JSONObject like this code
JSONArray jsonBody=new JSONArray();
try {
/// add jSONObject inside JSONArray as example
JSONObject jsonObject=new JSONObject();
jsonObject.put("id",1);
jsonObject.put("name","test");
jsonBody.put(jsonObject);
} catch (Exception e) {
e.printStackTrace();
}
final String requestBody = jsonBody.toString();
StringRequest request = new StringRequest(Request.Method.POST, URL, new Response.Listener<String>() {
#Override
public void onResponse(String response) {
textView.setText(response.toString());
try {
JSONObject object=new JSONObject(response);
// do every thing using json object
} catch (JSONException e) {
e.printStackTrace();
}
}
}, new Response.ErrorListener() {
#Override
public void onErrorResponse(VolleyError error) {
Log.d("error",error.toString());
}
}){
#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
protected Response<String> parseNetworkResponse(NetworkResponse response) {
String responseString = "";
if (response != null) {
responseString = String.valueOf(response.statusCode);
// can get more details such as response.headers
}
return Response.success(responseString, HttpHeaderParser.parseCacheHeaders(response));
}
};
I recommended using retrofit library instead of Volley
I am trying to send a POST request with Volley in Android Studio. However, I would like to set some headers and a body. How can I do this?
In this case, the headers are id and key. Where should I add the body? I have tried to follow the numerous questions about these that are written in StackOverflow. However, it still seems like the headers and the body is not properly sent.
try {
RequestQueue requestQueue = Volley.newRequestQueue(this);
String URL = "https://url.of.the.server";
JSONObject jsonBody = new JSONObject();
jsonBody.put("Content-Type", "application/json");
jsonBody.put("id", "oneapp.app.com");
jsonBody.put("key", "fgs7902nskagdjs");
final String requestBody = jsonBody.toString();
StringRequest stringRequest = new StringRequest(Request.Method.POST, URL, new Response.Listener<String>() {
#Override
public void onResponse(String response) {
Log.i("VOLLEY", response);
}
}, new Response.ErrorListener() {
#Override
public void onErrorResponse(VolleyError error) {
Log.e("VOLLEY", error.toString());
}
}) {
#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() throws AuthFailureError {
Map<String, String> params = new HashMap<String, String>();
params.put("Content-Type", "application/json");
params.put("id", "oneapp.app.com");
params.put("key", "fgs7902nskagdjs");
return params;
}
#Override
protected Response<String> parseNetworkResponse(NetworkResponse response) {
String responseString = "";
if (response != null) {
responseString = String.valueOf(response.statusCode);
// can get more details such as response.headers
}
return Response.success(responseString, HttpHeaderParser.parseCacheHeaders(response));
}
};
Log.d("string", stringRequest.toString());
requestQueue.add(stringRequest);
} catch (JSONException e) {
e.printStackTrace();
}
Thank you very much for your help.
You are correctly setting the headers, you could try this
try {
RequestQueue requestQueue = Volley.newRequestQueue(this);
String URL = "https://url.of.the.server";
StringRequest stringRequest = new StringRequest(Request.Method.POST, URL, new Response.Listener<String>() {
#Override
public void onResponse(String response) {
Log.i("VOLLEY", response);
}
}, new Response.ErrorListener() {
#Override
public void onErrorResponse(VolleyError error) {
Log.e("VOLLEY", error.toString());
}
}) {
#Override
public String getBodyContentType() {
return "application/json; charset=utf-8";
}
#Override
public byte[] getBody() throws AuthFailureError {
try {
// request body goes here
JSONObject jsonBody = new JSONObject();
jsonBody.put("attribute1", "value1");
String requestBody = jsonBody.toString();
return 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() throws AuthFailureError {
Map<String, String> params = new HashMap<String, String>();
params.put("Content-Type", "application/json");
params.put("id", "oneapp.app.com");
params.put("key", "fgs7902nskagdjs");
return params;
}
#Override
protected Response<String> parseNetworkResponse(NetworkResponse response) {
String responseString = "";
if (response != null) {
responseString = String.valueOf(response.statusCode);
// can get more details such as response.headers
}
return Response.success(responseString, HttpHeaderParser.parseCacheHeaders(response));
}
};
Log.d("string", stringRequest.toString());
requestQueue.add(stringRequest);
} catch (JSONException e) {
e.printStackTrace();
}
For example, if request body is
{
name: "name1",
email: "email1"
}
getBody method would be
#Override
public byte[] getBody() throws AuthFailureError {
JSONObject jsonBody = new JSONObject();
jsonBody.put("name", "name1");
jsonBody.put("email", "email1");
String requestBody = jsonBody.toString();
return requestBody.getBytes("utf-8");
}
I am trying to create an app on android studio and im new to this IDE and language. I managed to implement the GET method for Imflip api, but im stuck on the POST method. I would like to return an Meme with a caption added by the user.
Im using Android Studio 3.4.1. I've tried the code attached. For testing purposes, i've hardcoded the username, password, and two captions. Also, when i call POST() I pass the id 61579 as a parameter. I've tried finding he value for the response but it says that its "200"...
What i need is a url for the created meme.
Hope anyone can help.
Thanks in Advance.
private void POST(String memeID) {
try {
RequestQueue requestQueue = Volley.newRequestQueue(this);
String URL = "https://api.imgflip.com/caption_image";
JSONObject jsonBody = new JSONObject();
jsonBody.put("template_id", memeID);
jsonBody.put("username", "Meme_Genie");
jsonBody.put("password", "Password");
jsonBody.put("text0", "Hello");
jsonBody.put("text1", "World");
final String requestBody = jsonBody.toString();
StringRequest stringRequest = new StringRequest(Request.Method.POST, URL, new Response.Listener<String>() {
#Override
public void onResponse(String response) {
Log.i("VOLLEY", response);
}
}, new Response.ErrorListener() {
#Override
public void onErrorResponse(VolleyError error) {
Log.e("VOLLEY", error.toString());
}
}) {
#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
protected Response<String> parseNetworkResponse(NetworkResponse response) {
String responseString = "";
if (response != null) {
responseString = String.valueOf(response.statusCode);
// can get more details such as response.headers
}
return Response.success(responseString, HttpHeaderParser.parseCacheHeaders(response));
}
};
requestQueue.add(stringRequest);
} catch (JSONException e) {
e.printStackTrace();
}
}
Switching from encode = "json" to encode = "form"
Or switching your body to BodySerializationMethod.UrlEncoded will work
I need to make an api request which.
Two headers :
Accept
Authorization
Five body params.
Number
Make
Model
Description
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 :
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.
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.
I want small example to send JSON object in POST request from android volley and it has to receive Java Restful Webservices
You can use the following working sample code. Hope this helps!
...
try {
RequestQueue queue = Volley.newRequestQueue(this);
jsonBody = new JSONObject();
jsonBody.put("Title", "VolleyApp Android Demo");
jsonBody.put("Author", "BNK");
jsonBody.put("Date", "2015/08/26");
requestBody = jsonBody.toString();
StringRequest stringRequest = new StringRequest(1, url, new Response.Listener<String>() {
#Override
public void onResponse(String response) {
textView.setText(response);
}
}, new Response.ErrorListener() {
#Override
public void onErrorResponse(VolleyError error) {
textView.setText(error.toString());
}
}) {
#Override
public String getBodyContentType() {
return String.format("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;
}
}
};
queue.addToRequestQueue(stringRequest);
} catch (JSONException e) {
e.printStackTrace();
}
Moreover, can you clarify what does it has to receive Java Restful Webservices mean? My above request receives String value.