Analyse de la chronologie publique de Twitter (JSON) dans les objets Java via GSON

Question

J'ai vu beaucoup de personnes ayant des problèmes avec la bibliothèque GSON - je n'arrivais toujours pas à trouver une solution à mon problème. Ce que j'essaye de réaliser est d'analyser JSON de Twitter's public timeline dans un POJO avec GSON.

Ce qui suit est ma représentation de la structure JSON de twitter:

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()); 

Je reçois actuellement l'erreur suivante:

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

Je suppose que ma structure POJO est incorrecte ou peut-être que cela a à voir avec le fait que l'objet JSON "protected" est un identifiant protégé en Java. Si ce dernier est le cas, je ne saurais pas comment le réparer.

Answer 1

Pourquoi réinventer la roue? Vous pouvez utiliser twitter4j. Il fait tout l'analyse, et vous donne les objets nécessaires.

Answer 2

Tous les champs ne sont pas des chaînes. par exemple: la notification est booléenne

import com.google.gson.annotations.SerializedName; 

    public class Tweets { 

@SerializedName("geo") 
public String geo; 

@SerializedName("in_reply_to_status_id") 
public String in_reply_to_status_id; 

@SerializedName("truncated") 
public String truncated; 

@SerializedName("created_at") 
public String created_at; 

@SerializedName("retweet_count") 
public String retweet_count; 

@SerializedName("in_reply_to_user_id") 
public String in_reply_to_user_id; 

@SerializedName("id_str") 
public String id_str; 

@SerializedName("place") 
public String place; 

@SerializedName("favorited") 
public boolean favorited; 

@SerializedName("source") 
public String source; 

@SerializedName("in_reply_to_screen_name") 
public String in_reply_to_screen_name; 

@SerializedName("in_reply_to_status_id_str") 
public String in_reply_to_status_id_str; 

@SerializedName("id") 
public long id; 

@SerializedName("contributors") 
public String contributors; 

@SerializedName("coordinates") 
public String coordinates; 

@SerializedName("retweeted") 
public boolean retweeted; 

@SerializedName("text") 
public String text; 

@SerializedName("profile_image_url") 
public String profile_image_url; 

// public user user; 
public User user; 


} 

et

import com.google.gson.annotations.SerializedName; 

public class User { 

@SerializedName("friends_count") 
public int friends_count; 

@SerializedName("profile_background_color") 
public String profile_background_color; 

@SerializedName("profile_background_image_url") 
public String profile_background_image_url; 

@SerializedName("created_at") 
public String created_at; 

@SerializedName("description") 
public String description; 

@SerializedName("favourites_count") 
public int favourites_count; 

@SerializedName("lang") 
public String lang; 

@SerializedName("notifications") 
public boolean notifications; 

@SerializedName("id_str") 
public String id_str; 

@SerializedName("default_profile_image") 
public boolean default_profile_image; 

@SerializedName("profile_text_color") 
public String profile_text_color; 

@SerializedName("default_profile") 
public boolean default_profile; 

@SerializedName("show_all_inline_media") 
public boolean show_all_inline_media; 

@SerializedName("contributors_enabled") 
public boolean contributors_enabled; 

@SerializedName("geo_enabled") 
public boolean geo_enabled; 

@SerializedName("screen_name") 
public String screen_name; 

@SerializedName("profile_sidebar_fill_color") 
public String profile_sidebar_fill_color; 

@SerializedName("profile_image_url") 
public String profile_image_url; 

@SerializedName("profile_background_tile") 
public boolean profile_background_tile; 

@SerializedName("follow_request_sent") 
public boolean follow_request_sent; 

@SerializedName("url") 
public String url; 

@SerializedName("statuses_count") 
public int statuses_count; 

@SerializedName("following") 
public boolean following; 

@SerializedName("time_zone") 
public String time_zone; 

@SerializedName("profile_link_color") 
public String profile_link_color; 

@SerializedName("protected") 
public boolean protectedd; 

@SerializedName("verified") 
public boolean verified; 

@SerializedName("profile_sidebar_border_color") 
public String profile_sidebar_border_color; 

@SerializedName("followers_count") 
public int followers_count; 

@SerializedName("location") 
public String location; 

@SerializedName("name") 
public String name; 

@SerializedName("is_translator") 
public boolean is_translator; 

@SerializedName("id") 
public long id; 

@SerializedName("listed_count") 
public int listed_count; 

@SerializedName("profile_use_background_image") 
public boolean profile_use_background_image; 

@SerializedName("utc_offset") 
public int utc_offset; 

}