Question

I’ve seen quite a few people having trouble with the GSON library – I still couldn’t find a solution to my problem.

What I’m trying to achieve is to parse JSON from Twitter’s public timeline into a POJO with GSON.

The following is my representation of twitter’s JSON structure:

public class OneTweet {


public OneTweet()
{
    // Empty constructor
}


public String coordinates;
public String favorited;
public String created_at;
public String truncated;
public String text;
public String contributors;
public String id;
public String geo;
public String in_reply_to_user_id;
public String place;
public String in_reply_to_screen_name;
//public user user;

public List<user> user;


public String source;
public String something;


}

---

public class user {

public String name;
public String profile_sidebar_border_color;
public String profile_background_tile;
public String profile_sidebar_fill_color;
public String created_at;
public String profile_image_url;
public String location;
public String profile_link_color;
public String follow_request_sent;
public String url;
public String favourites_count;
public String contributors_enabled;
public String utc_offset;
public String id;
public String profile_use_background_image;
public String profile_text_color;

// protected is a reserved identifier
public String pprotected;

public String followers_count;
public String lang;
public String notifications;
public String time_zone;
public String verified;
public String profile_background_color;
public String geo_enabled;
public String description;
public String friends_count;
public String statuses_count;
public String profile_background_image_url;
public String following;
public String in_reply_to_status_id;
public String screen_name;

 }

---

Map<String, OneTweet> json_string_array = googlejson.fromJson(jsonstring, new TypeToken<Map<String, OneTweet>>(){}.getType());

I currently get the following error:

Exception in thread “main” com.google.gson.JsonParseException: Expecting object found: false

I’m guessing either my POJO structure is wrong or maybe it has to do with the fact that the JSON object “protected” is a protected identifier in Java. If the latter is the case I wouldn’t know how to fix it.

Answer 1

Why reinvent the wheel? You can use twitter4j. It does all the parsing, and gives you the needed objects.