Develop Reference

how can i call the list in the resttemplate?

1-this my model object for account , iwant to return a json result for post method and my problem that my code return null .=
public class Account implements Serializable {
private static final long serialVersionUID = 1L;
private long id;
private String accountType;
private String title;
private double lockedAmount;
private String lastUpdate;
private double balance;
private String currency;
private String rib;
private String Agency;
private String swiftcode;
private String ribURI;
private boolean canDebit;
private boolean canCredit;
private List<Operation> operation;
private List<Documents> documents;
2-this the class Operation :
public class Operation {
private String Descript;
private String ValueDate;
private String bookDate;
private String Reference;
private Integer Debit;
private Integer Credit;
private Integer ClosingBalance;
}
3-this is what i do in my controller :
//get Operation list by account id
#PostMapping("eAccount/Operations/Account/{id}")
public List<Operation> getOperationsByAccountId(#PathVariable long id, String bookDate) {
return operationService.getOperationsByAccountId(id, bookDate);
}
4-and the service :
//get Operation list by account id
public List<Operation> getOperationsByAccountId(#PathVariable long id, String bookDate) {
Account account = new Account();
account.setId(id);
String url = operationUrl;
account = resttemplate.postForObject(url,account, Account.class);
return account.getOperation();
}
5-i need to return this result :
{ "account": { "id": "100000000137",
"operation": [
{
"bookDate": "20160105 20160201" } ] } }

I'm passing a list of JSON file is not getting display in the Android application

I was Passing a this JSON http://www.mocky.io/v2/5cacde192f000078003a93bb
i was trying to print a just a category_name
I'm not able to get the data list , when i pass the object with out the data list just like http://www.mocky.io/v2/5cb859344c0000092ed3d4df
private Category_name category_name;
public Category_name getCategoryName() {
return category_name;
}
}
public class Category_name {
#SerializedName("category_name")
public String name;
public String getName() {
return name;
}
}````
i can access that through the NewAdapter.java
with the following code
#Override
public void onBindViewHolder(NewsViewHolder holder, int position) {
Log.e("Its coming","NewAdapter");
ApiObject apiObject = apiObjectList.get(position);
holder.title.setText(apiObject.getCategoryName().getName());
}
with the same code I'm not able to get the data list
#SerializedName("data")
public List<Data> data;
public List<Data> getData() {
return data;
}
public class Data {
#SerializedName("details")
private Category_name category_name;
public Category_name getCategoryName() {
return category_name;
}
}
public class Category_name {
#SerializedName("category_name")
public String name;
public String getName() {
return name;
}
}
#Override
public void onBindViewHolder(NewsViewHolder holder, int position) {
Log.e("Its coming","NewAdapter");
ApiObject apiObject = apiObjectList.get(position);
holder.title.setText(apiObject.getData().getCategoryName().getName());
}
I'm not able to access the getCategoryName();
Please help thanks in advance

use json 2 pojo conversion to create proper model class of json data
http://www.jsonschema2pojo.org/
pass whole example object to adapter constructer.

I think you need to follow these way of POJO parsing according to your JSON response.
public class Data{
#Serialization("status")
#Expose
private String status;
#Serialization("data")
#Expose
private List<MyData> data;
Then
public class MyData{
#Serialization("details")
#Expose
private List<Details> getDetails();
#Serialization("product_count")
#Expose
private String Product_count;
#Serialization("products")
#Expose
private List<Products> getProducts();
//setter and getters
}
Details POJO
Public class Details{
#Serialization("category_id")
#Expose
private String category_id;
#Serialization("category_name")
#Expose
private String category_name;
#Serialization("category_icon")
#Expose
private String category_icon;
//setter and getters
}
Products POJO
Public class Products{
#Serialization("product_id")
#Expose
private String product_id;
#Serialization("product_name")
#Expose
private String product_name;
#Serialization("product_image")
#Expose
private String product_icon;
etc
//setter and getters
}

Having Error while working with Retrofit lib. JsonSyntaxException

I am practising with retrofit and i am having an error as
com.google.gson.JsonSyntaxException: java.lang.IllegalStateException: Expected BEGIN_ARRAY but was NUMBER at line 1 column 31 path $.total_results
I am using this api https://api.themoviedb.org/3/movie/550?api_key=########################
here is my code
MainActivity.java
public class MainActivity extends AppCompatActivity {
private static final String Tag=MainActivity.class.getSimpleName();
private static final String APIKEY="###########################";
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
final ProgressDialog pDialog= new ProgressDialog(this);
pDialog.setMessage("Loading...");
pDialog.show();
final RecyclerView recyclerView =(RecyclerView)findViewById(R.id.recyclerMovie);
recyclerView.setLayoutManager(new LinearLayoutManager(this));
ApiInterface apiService= ApiClient.getClient().create(ApiInterface.class);
Call<MovieResponse> call =apiService.getTopRatedMovie(APIKEY);
call.enqueue(new Callback<MovieResponse>() {
#Override
public void onResponse(Call<MovieResponse> call, Response<MovieResponse> response) {
List<Movie> movies=response.body().getResults();
Log.d(Tag, "Numbers Of Movies Received"+ movies.size());
MovieAdapter adapter =new MovieAdapter(movies,R.layout.list_item_movies,getApplicationContext());
recyclerView.setAdapter(adapter);
pDialog.dismiss();
}
#Override
public void onFailure(Call<MovieResponse> call, Throwable t) {
Log.d(Tag,"Error:-"+t.toString());
pDialog.dismiss();
Toast.makeText(getApplicationContext(),"Oops Error...",Toast.LENGTH_SHORT).show();
}
});
}}
Movie.java
public class Movie {
#SerializedName("poster_path")
#Expose
private String posterPath;
#SerializedName("adult")
#Expose
private boolean adult;
#SerializedName("overview")
#Expose
private String overview;
#SerializedName("release_date")
#Expose
private String releaseDate;
#SerializedName("genre_ids")
#Expose
private List<Integer> genreIds = new ArrayList<Integer>();
#SerializedName("id")
#Expose
private Integer id;
#SerializedName("original_title")
#Expose
private String originalTitle;
#SerializedName("original_language")
#Expose
private String originalLanguage;
#SerializedName("title")
#Expose
private String title;
#SerializedName("backdrop_path")
#Expose
private String backdropPath;
#SerializedName("popularity")
#Expose
private Double popularity;
#SerializedName("vote_count")
#Expose
private Integer voteCount;
#SerializedName("video")
#Expose
private Boolean video;
#SerializedName("vote_average")
#Expose
private Double voteAverage;
public Movie(String posterPath, boolean adult, String overview, String releaseDate, List<Integer> genreIds, Integer id, String originalTitle, String originalLanguage, String title, String backdropPath, Double popularity, Integer voteCount, Boolean video, Double voteAverage) {
this.posterPath = posterPath;
this.adult = adult;
this.overview = overview;
this.genreIds = genreIds;
this.backdropPath = backdropPath;
this.id=id;
this.originalLanguage=originalLanguage;
this.originalTitle=originalTitle;
this.releaseDate=releaseDate;
this.title=title;
this.video=video;
this.voteAverage=voteAverage;
this.voteCount=voteCount;
this.popularity=popularity;
}
//getter and setter methods }
MovieResponse.java
public class MovieResponse {
#SerializedName("page")
#Expose
private int page;
#SerializedName("results")
#Expose
private List<Movie> results;
#SerializedName("total_pages")
#Expose
private int total_pages;
#SerializedName("total_results")
#Expose
private List<Movie> total_results;
//getter and setter methods}
ApiClient.java
public class ApiClient {
public static final String Base_URl="http://api.themoviedb.org/3/";
public static Retrofit retrofit=null;
public static Retrofit getClient(){
if(retrofit==null){
retrofit=new Retrofit.Builder()
.baseUrl(Base_URl)
.addConverterFactory(GsonConverterFactory.create())
.build();
}
return retrofit;
}}
ApiInterface.java
public interface ApiInterface{
#GET("movie/top_rated")
Call<MovieResponse> getTopRatedMovie(#Query("api_key") String apiKey);
#GET("movie/{id}")
Call<MovieResponse> getMovieDetails(#Path("id") int id, #Query("api_key") String apiKey);
}
Please Give me the solution...

you created wrong object
#SerializedName("total_results")
#Expose
private List<Movie> total_results;
change to
#SerializedName("total_results")
#Expose
private Int total_results;
because as per your error it should be number of result and you created List so it will ask for ARRAY only.
If I am wrong then please copy your response and take pojo class from
http://www.jsonschema2pojo.org/

Look closely to your Movie.java POJO, especially to this field:
#SerializedName("genre_ids")
#Expose
private List<Integer> genreIds = new ArrayList<Integer>();
...which has type of List of Integers. In the JSON that you've provided this array contains an Objects instead of Integer ids. You can represent this object like this:
public class Genre {
#SerializedName("id")
#Expose
private int id;
#SerializedName("name")
#Expose
private String name;
}
Furthermore, the actual name of this array is genres (not the genres_ids). So, to avoid the parsing error the only thing you need is to change the field above to this:
#SerializedName("genres")
#Expose
private List<Genre> genres = new ArrayList< Genre >();
Happy coding! ;)

Using Retrofit 2 but, have Expected BEGIN_OBJECT but was STRING at line 1 column 1 path $

I make request get photos from Flickr, using Retrofit 2.
I create a class for parsing it:
public class FlickrResult {
#SerializedName("photos")
#Expose
private FlickrPhotos photos;
#SerializedName("stat")
#Expose
private String stat;
public FlickrPhotos getPhotos() {
return photos;
}
public class FlickrPhotos {
#SerializedName("page")
#Expose
private int page;
#SerializedName("pages")
#Expose
private String pages;
#SerializedName("perpage")
#Expose
private int perpage;
#SerializedName("total")
#Expose
private String total;
#SerializedName("photo")
#Expose
private ArrayList<FlickrPhoto> photo;
public ArrayList<FlickrPhoto> getPhoto() {
return photo;
}
public class FlickrPhoto {
#SerializedName("id")
#Expose
private String id;
#SerializedName("owner")
#Expose
private String owner;
#SerializedName("secret")
#Expose
private String secret;
#SerializedName("server")
#Expose
private String server;
#SerializedName("farm")
#Expose
private int farm;
#SerializedName("title")
#Expose
private String title;
#SerializedName("ispublic")
#Expose
private int ispublic;
#SerializedName("isfriend")
#Expose
private int isfriend;
#SerializedName("isfamily")
#Expose
private int isfamily;
public String getTitle() {
return title;
}
}
}
}
My build request is:
static {
gson = new GsonBuilder()
.setLenient()
.create();
}
#NonNull
private static Retrofit buildRetrofit() {
Log.i(TAG, "onBuildRetrofitApiFactory");
return new Retrofit.Builder()
.baseUrl("https://api.flickr.com/services/")
.client(getClient())
.addConverterFactory(GsonConverterFactory.create(gson))
.build();
}
Retrofit interface
#GET("rest")
Call<FlickrResult> getPhotos(#Query("method") String method,
#Query("api_key") String key,
#Query("format") String format,
#Query ("nojsoncallbac") String nojsoncallbac
);
Me responsable is success, but problem in parsing. Have exeption:
java.lang.IllegalStateException: Expected BEGIN_OBJECT but was STRING at line 1 column 1 path $
Please guys, i need you help!

Your Retrofit interface is wrong.
The paremeter "nojsoncallbac" is incorrect and should be "nojsoncallback".
This incorrect parameter causes the API to return a different format on the response
jsonFlickrApi({
"photos": {
"page": 1,
"pages": 10,
"perpage": 100,
"total": 1000,
"photo": [
...
]
}
})

Gson is expecting your JSON string to begin with an object opening brace
{
But the string you have passed to it may be starts with an open quotes
""

Retrofit - Android - Expected BEGIN_ARRAY but was BEGIN_OBJECT [duplicate]

This question already has answers here:
Why does Gson fromJson throw a JsonSyntaxException: Expected BEGIN_OBJECT but was BEGIN_ARRAY?
(2 answers)
Closed 6 years ago.
I am trying to parse following JSON data using Retrofit
{
"message": false,
"suggestions": false,
"vehicle": {
"parked": true,
"uin": "15",
"vin": "WBAEG1312MCB42267",
"make": "Bmw",
"model": "E8SERIES",
"color": "Blue",
"year": "1991",
"package": "Premium",
"options": "",
"interior": "Color: Cream, Type:Leather",
"exterior": "",
"activity": "Parked",
"username": "Dhruba Sarma",
"timestamp": "04-Sep, 00:35",
"latlng": {
"lat": 12.899270164792,
"lng": 77.646080134509
}
}
}
I have created my model classes as follows -
VehicleModel.java
`public class VehicleModel {
#SerializedName("message")
#Expose
private Boolean message;
#SerializedName("suggestions")
#Expose
private Boolean suggestions;
#SerializedName("vehicle")
#Expose
private Vehicle vehicle;
public Boolean getMessage() {
return message;
}
public Boolean getSuggestions() {
return suggestions;
}
public Vehicle getVehicle() {
return vehicle;
}
Vehicle.java
`public class Vehicle {
#SerializedName("parked")
#Expose
private Boolean parked;
#SerializedName("uin")
#Expose
private String uin;
#SerializedName("vin")
#Expose
private String vin;
#SerializedName("make")
#Expose
private String make;
#SerializedName("model")
#Expose
private String model;
#SerializedName("color")
#Expose
private String color;
#SerializedName("year")
#Expose
private String year;
#SerializedName("package")
#Expose
private String _package;
#SerializedName("options")
#Expose
private String options;
#SerializedName("interior")
#Expose
private String interior;
#SerializedName("exterior")
#Expose
private String exterior;
#SerializedName("activity")
#Expose
private String activity;
#SerializedName("username")
#Expose
private String username;
#SerializedName("timestamp")
#Expose
private String timestamp;
#SerializedName("latlng")
#Expose
private LatLng latlng;
public Boolean getParked() {
return parked;
}
public String getUin() {
return uin;
}
public String getVin() {
return vin;
}
public String getMake() {
return make;
}
public String getModel() {
return model;
}
public String getColor() {
return color;
}
public String getYear() {
return year;
}
public String getPackage() {
return _package;
}
public String getOptions() {
return options;
}
public String getInterior() {
return interior;
}
public String getExterior() {
return exterior;
}
public String getActivity() {
return activity;
}
public String getUsername() {
return username;
}
public String getTimestamp() {
return timestamp;
}
public LatLng getLatlng() {
return latlng;
}
}`
And finally LatLng.java
`public class LatLng {
#SerializedName("lat")
#Expose
private Double lat;
#SerializedName("lng")
#Expose
private Double lng;
public Double getLat() {
return lat;
}
public Double getLng() {
return lng;
}
I even tried using jsonschema2pojo for reference. But i still get the below error
com.google.gson.JsonSyntaxException: java.lang.IllegalStateException: Expected BEGIN_ARRAY but was BEGIN_OBJECT
Please suggest what am i doing wrong ?
EDIT- Here is how i am parsing JSON
Retrofit retrofit = new Retrofit.Builder().baseUrl(baseUrl)
.addConverterFactory(GsonConverterFactory.create()).build();
VehicleRequestInterface request = retrofit.create(VehicleRequestInterface.class);
Call<VehicleJSONResponse> call = request.getVehicleJSON(url);
call.enqueue(new Callback<VehicleJSONResponse>() {
#Override
public void onResponse(Call<VehicleJSONResponse> call, Response<VehicleJSONResponse> response) {
VehicleJSONResponse jsonResponse = response.body();
vehicleData = new ArrayList<>(Arrays.asList(jsonResponse.getVehicle()));

Declare your vehicleData variable like this .
ArrayList<VehicleModel> vehicleData = new ArrayList<VehicleModel>();
And then in onResponse rather than
vehicleData = new ArrayList<>(Arrays.asList(jsonResponse.getVehicle()));
add like this way
vehicleData.add(jsonResponse.getVehicle())
The problem is you have no arrays in your json