Send POST request with JSON data using Volley

Question

I would like to send a new JsonObjectRequest request     I want to receive JSON data  response from server   OK I want to send JSON formatted data with this request to the server  JsonObjectRequest request   new JsonObjectRequest      Request Method POST   myurl com   null      new Response Listener lt JSONObject gt               Override         public void onResponse JSONObject response                                           new Response ErrorListener              Override         public void onErrorResponse VolleyError error                                                      Override         protected Map lt String String gt  getParams                    something to do here                return params                      Override         public Map lt String  String gt  getHeaders   throws AuthFailureError                  something to do here                return params                      P S  I use GSON library in my project too

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final String URL     volley resource 12      Post params to be sent to the server HashMap lt String  String gt  params   new HashMap lt String  String gt     params put  token    AbCdEfGh123456     JsonObjectRequest req   new JsonObjectRequest URL  new JSONObject params          new Response Listener lt JSONObject gt                  Override            public void onResponse JSONObject response                   try                      VolleyLog v  Response  n  s   response toString 4                     catch  JSONException e                       e printStackTrace                                            new Response ErrorListener                 Override            public void onErrorResponse VolleyError error                   VolleyLog e  Error     error getMessage                                 add the request object to the queue to be executed ApplicationController getInstance   addToRequestQueue req     refer

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I know that this thread is quite old  but I had this problem and I came up with a cool solution which can be very useful to many because it corrects extended the Volley library on many aspects   I spotted some not supported-out-of-box Volley features    This JSONObjectRequest is not perfect  you have to expect a JSON at the end  see the Response Listener lt JSONObject gt    What about Empty Responses  just with a 200 status   What do I do if I want directly my POJO from the ResponseListener    I more or less compiled a lot of solutions in a big generic class in order to have a solution for all the problem I quoted             Created by laurentmeyer on 25 07 15        public class GenericRequest lt T gt  extends JsonRequest lt T gt          private final Gson gson   new Gson         private final Class lt T gt  clazz       private final Map lt String  String gt  headers          Used for request which do not return anything from the server      private boolean muteRequest   false                    Basically  this is the constructor which is called by the others          It allows you to send an object of type A to the server and expect a JSON representing a object of type B          The problem with the  JsonObjectRequest is that you expect a JSON at the end          We can do better than that  we can directly receive our POJO          That s what this class does                   param method         HTTP Method          param classtype      Classtype to parse the JSON coming from the server          param url            url to be called          param requestBody    The body being sent          param listener       Listener of the request          param errorListener  Error handler of the request          param headers        Added headers               private GenericRequest int method  Class lt T gt  classtype  String url  String requestBody                             Response Listener lt T gt  listener  Response ErrorListener errorListener  Map lt String  String gt  headers             super method  url  requestBody  listener                   errorListener            clazz   classtype           this headers   headers           configureRequest                             Method to be called if you want to send some objects to your server via body in JSON of the request  with headers and not muted                   param method         HTTP Method          param url            URL to be called          param classtype      Classtype to parse the JSON returned from the server          param toBeSent       Object which will be transformed in JSON via Gson and sent to the server          param listener       Listener of the request          param errorListener  Error handler of the request          param headers        Added headers               public GenericRequest int method  String url  Class lt T gt  classtype  Object toBeSent                             Response Listener lt T gt  listener  Response ErrorListener errorListener  Map lt String  String gt  headers             this method  classtype  url  new Gson   toJson toBeSent   listener                   errorListener  headers                            Method to be called if you want to send some objects to your server via body in JSON of the request  without header and not muted                   param method         HTTP Method          param url            URL to be called          param classtype      Classtype to parse the JSON returned from the server          param toBeSent       Object which will be transformed in JSON via Gson and sent to the server          param listener       Listener of the request          param errorListener  Error handler of the request               public GenericRequest int method  String url  Class lt T gt  classtype  Object toBeSent                             Response Listener lt T gt  listener  Response ErrorListener errorListener             this method  classtype  url  new Gson   toJson toBeSent   listener                   errorListener  new HashMap lt String  String gt                               Method to be called if you want to send something to the server but not with a JSON  just with a defined String  without header and not muted                   param method         HTTP Method          param url            URL to be called          param classtype      Classtype to parse the JSON returned from the server          param requestBody    String to be sent to the server          param listener       Listener of the request          param errorListener  Error handler of the request               public GenericRequest int method  String url  Class lt T gt  classtype  String requestBody                             Response Listener lt T gt  listener  Response ErrorListener errorListener             this method  classtype  url  requestBody  listener                   errorListener  new HashMap lt String  String gt                               Method to be called if you want to GET something from the server and receive the POJO directly after the call  no JSON    Without header                   param url            URL to be called          param classtype      Classtype to parse the JSON returned from the server          param listener       Listener of the request          param errorListener  Error handler of the request               public GenericRequest String url  Class lt T gt  classtype  Response Listener lt T gt  listener  Response ErrorListener errorListener             this Request Method GET  url  classtype      listener  errorListener                            Method to be called if you want to GET something from the server and receive the POJO directly after the call  no JSON    With headers                   param url            URL to be called          param classtype      Classtype to parse the JSON returned from the server          param listener       Listener of the request          param errorListener  Error handler of the request          param headers        Added headers               public GenericRequest String url  Class lt T gt  classtype  Response Listener lt T gt  listener  Response ErrorListener errorListener  Map lt String  String gt  headers             this Request Method GET  classtype  url      listener  errorListener  headers                            Method to be called if you want to send some objects to your server via body in JSON of the request  with headers and muted                   param method         HTTP Method          param url            URL to be called          param classtype      Classtype to parse the JSON returned from the server          param toBeSent       Object which will be transformed in JSON via Gson and sent to the server          param listener       Listener of the request          param errorListener  Error handler of the request          param headers        Added headers          param mute           Muted  put it to true  to make sense                public GenericRequest int method  String url  Class lt T gt  classtype  Object toBeSent                             Response Listener lt T gt  listener  Response ErrorListener errorListener  Map lt String  String gt  headers  boolean mute             this method  classtype  url  new Gson   toJson toBeSent   listener                   errorListener  headers            this muteRequest   mute                           Method to be called if you want to send some objects to your server via body in JSON of the request  without header and muted                   param method         HTTP Method          param url            URL to be called          param classtype      Classtype to parse the JSON returned from the server          param toBeSent       Object which will be transformed in JSON via Gson and sent to the server          param listener       Listener of the request          param errorListener  Error handler of the request          param mute           Muted  put it to true  to make sense                public GenericRequest int method  String url  Class lt T gt  classtype  Object toBeSent                             Response Listener lt T gt  listener  Response ErrorListener errorListener  boolean mute             this method  classtype  url  new Gson   toJson toBeSent   listener                   errorListener  new HashMap lt String  String gt               this muteRequest   mute                            Method to be called if you want to send something to the server but not with a JSON  just with a defined String  without header and not muted                   param method         HTTP Method          param url            URL to be called          param classtype      Classtype to parse the JSON returned from the server          param requestBody    String to be sent to the server          param listener       Listener of the request          param errorListener  Error handler of the request          param mute           Muted  put it to true  to make sense                public GenericRequest int method  String url  Class lt T gt  classtype  String requestBody                             Response Listener lt T gt  listener  Response ErrorListener errorListener  boolean mute             this method  classtype  url  requestBody  listener                   errorListener  new HashMap lt String  String gt               this muteRequest   mute                  Override      protected Response lt T gt  parseNetworkResponse NetworkResponse response                The magic of the mute request happens here          if  muteRequest                 if  response statusCode  gt   200  amp  amp  response statusCode  lt   299                        If the status is correct  we return a success but with a null object  because the server didn t return anything                  return Response success null  HttpHeaderParser parseCacheHeaders response                              else                try                       If it s not muted  we just need to create our POJO from the returned JSON and handle correctly the errors                  String json   new String response data  HttpHeaderParser parseCharset response headers                     T parsedObject   gson fromJson json  clazz                    return Response success parsedObject  HttpHeaderParser parseCacheHeaders response                   catch  UnsupportedEncodingException e                     return Response error new ParseError e                   catch  JsonSyntaxException e                     return Response error new ParseError e                                       return null                Override      public Map lt String  String gt  getHeaders   throws AuthFailureError            return headers    null   headers   super getHeaders                 private void configureRequest                 Set retry policy             Add headers  for auth for example                             It could seem a bit overkill but it s pretty cool to have all these constructors because you have all the cases    The main constructor wasn t meant to be used directly although it s  of course  possible     Request with response parsed to POJO   Headers manually set   POJO to Send Request with response parsed to POJO   POJO to Send Request with response parsed to POJO   String to Send Request with response parsed to POJO  GET  Request with response parsed to POJO  GET    Headers manually set Request with no response  200 - Empty Body    Headers manually set   POJO to Send Request with no response  200 - Empty Body    POJO to Send Request with no response  200 - Empty Body    String to Send   Of course  in order that it works  you have to have Google s GSON Lib  just add   compile  com google code gson gson x y z    to your dependencies  current version is 2 3 1

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Create an object of RequestQueue class   RequestQueue queue   Volley newRequestQueue this    Create a StringRequest with response and error listener    StringRequest sr   new StringRequest Request Method POST  http   api someservice com post comment   new Response Listener lt String gt           Override     public void onResponse String response            mPostCommentResponse requestCompleted             new Response ErrorListener          Override     public void onErrorResponse VolleyError error            mPostCommentResponse requestEndedWithError error                  Override     protected Map lt String String gt  getParams            Map lt String String gt  params   new HashMap lt String  String gt             params put  user  userAccount getUsername             params put  pass  userAccount getPassword             params put  comment   Uri encode comment            params put  comment post ID  String valueOf postId            params put  blogId  String valueOf blogId             return params              Override     public Map lt String  String gt  getHeaders   throws AuthFailureError           Map lt String String gt  params   new HashMap lt String  String gt             params put  Content-Type   application x-www-form-urlencoded            return params            Add your request into the RequestQueue   queue add jsObjRequest    Create PostCommentResponseListener interface just so you can see it  It   s a simple delegate for the async request   public interface PostCommentResponseListener   public void requestStarted    public void requestCompleted    public void requestEndedWithError VolleyError error      Include INTERNET permission inside AndroidManifest xml file    lt uses-permission android name  android permission INTERNET   gt

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JsonObjectRequest actually accepts JSONObject as body   From this blog article   final String url    some url   final JSONObject jsonBody   new JSONObject     type     example        new JsonObjectRequest url  jsonBody  new Response Listener lt JSONObject gt                Here is the source code and JavaDoc   param jsonRequest           Creates a new request      param method the HTTP method to use     param url URL to fetch the JSON from     param jsonRequest A   link JSONObject  to post with the request  Null is allowed and      indicates no parameters will be posted along with request      param listener Listener to receive the JSON response     param errorListener Error listener  or null to ignore errors      public JsonObjectRequest int method  String url  JSONObject jsonRequest          Listener lt JSONObject gt  listener  ErrorListener errorListener        super method  url   jsonRequest    null    null   jsonRequest toString    listener                  errorListener

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final String url    some url     instead of        final JSONObject jsonBody       type     example        you can use     JSONObject jsonBody   new JSONObject        try           jsonBody put  type    my type          catch  JSONException e            e printStackTrace          new JsonObjectRequest url  jsonBody  new Response Listener lt JSONObject gt

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You can also send data by overriding  getBody   method of JsonObjectRequest class  As shown below        Override     public byte   getBody                  JSONObject jsonObject   new JSONObject            String body   null          try                       jsonObject put  username    user123                jsonObject put  password    Pass123                 body   jsonObject toString              catch  JSONException e                           TODO Auto-generated catch block             e printStackTrace                       try                       return body toString   getBytes  utf-8              catch  UnsupportedEncodingException e                           TODO Auto-generated catch block             e printStackTrace                      return null

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final Map lt String String gt  params   new HashMap lt String String gt             params put  email   customer getEmail             params put  password   customer getPassword             String url   Constants BASE URL  login    doWebRequestPost url  params     public void doWebRequestPost String url  final Map lt String String gt  json           getmDialogListener   showDialog         StringRequest post   new StringRequest Request Method POST  url  new Response Listener lt String gt               Override         public void onResponse String response                try                   getmDialogListener   dismissDialog                    response                    catch  Exception e                    e printStackTrace                                   new Response ErrorListener              Override         public void onErrorResponse VolleyError error                Log d App TAG error toString                 getmDialogListener   dismissDialog                                Override         protected Map lt String  String gt  getParams   throws AuthFailureError               Map lt String String gt  map   json               return map                       App getInstance   getRequestQueue   add post

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protected Map lt String  String gt  getParams        Map lt String  String gt  params   new HashMap lt String  String gt         JSONObject JObj   new JSONObject        try              JObj put  Id   1               JObj put  Name    abc          catch  Exception e           e printStackTrace             params put  params   JObj toString           Map Entry lt String String gt     Log d  Parameter   params toString        return params

[android] Send POST request with JSON data using Volley

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