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

Question

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!

What's the flicker's api response? If the response structure varies depending on the response code then you might have an issue. What's your Retrofit interface ? — Robert Estivill, Sep 20 '16 at 10:16
@Robert Estivill no i have the same respons, as in https://api.flickr.com/services/rest/?method=flickr.photos.getRecent&api_key=eab3aa7d564989fd69048ec505e3e271&format=json&nojsoncallback=1 — nnnn, Sep 20 '16 at 10:20
@GET("rest") Call getPhotos(@Query("method") String method, @Query("api_key") String key, @Query("format") String format, @Query ("nojsoncallbac") String nojsoncallbac ); — nnnn, Sep 20 '16 at 10:23
Probably unrelated, but FlickrPhotos.pages and FlickrPhotos.total are both integers not Strings — Robert Estivill, Sep 20 '16 at 10:27

score 3 · Accepted Answer · answered Sep 20 '16 at 10:30

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": [
     ...
   ]
  }
 })

score 2 · Answer 2 · answered Sep 20 '16 at 10:24

2

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

""

answered Sep 20 '16 at 10:24

Rudresh

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

java.lang.IllegalStateException: Expected BEGIN_OBJECT but was STRING at line 1 column 1 path $

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