我想解析一個JSON到一個對象。有兩個類:用戶和配置文件。用戶有一個配置文件的實例。Gson反序列化 - 試圖解析一個JSON到一個對象
所以現在有一個JSON來建立一個用戶對象。在此JSON內部列出了用戶和配置文件的屬性,您可以看到,配置文件和用戶都獲得了名爲List的HashMap。但是我想創建用戶和配置文件出此JSON的,但我得到這個異常:
//編輯:
我從配置文件和用戶刪除Map<String, String> links
。所以現在我沒有得到任何錯誤,每個用戶都有一個檔案 - 但我仍然需要這些地圖。 GSON是否有可能區分json中的兩個列表資源,因爲它們具有相同的名稱?
//骯髒的黑客解決方案: ArrayList而不是HashMap沒有問題。不過,我決定 「手」 來解析JSON的這部分對象插入到我的HashMap ..
01-03 05:27:59.580: E/AndroidRuntime(4313): com.google.gson.JsonSyntaxException: java.lang.IllegalStateException: Expected BEGIN_ARRAY but was BEGIN_OBJECT at line 1 column 12
01-03 05:27:59.580: E/AndroidRuntime(4313): at com.google.gson.internal.bind.ReflectiveTypeAdapterFactory$Adapter.read(ReflectiveTypeAdapterFactory.java:180)
用戶:
public class User {
private String username;
private String slug;
private String email;
private Boolean emailVerified;
private Profile profile;
Map<String, String> links;
public User()
{
this.username = null;
this.slug = null;
this.email = null;
this.emailVerified = null;
this.profile = null;
this.links = new HashMap<String, String>();
}
public String getUsername(){
return this.username;
}
public String getSlug(){
return this.slug;
}
public String getEmail(){
return this.email;
}
public Boolean getEmailVerified(){
return this.emailVerified;
}
public Profile getProfile(){
return this.profile;
}
}
簡介:
public class Profile {
private Map<String, String> links;
private String name;
private String description;
private String gender;
private String status;
private String timezone;
private Bitmap icon;
public Profile()
{
this.name = null;
this.description = null;
this.gender = null;
this.status = null;
this.timezone = null;
this.links = new HashMap<String, String>();
}
public String getName(){
return this.name;
}
public String getDescription(){
return this.description;
}
public String getGender(){
return this.gender;
}
public String getStatus(){
return this.status;
}
public String getTimezone(){
return this.timezone;
}
}
一個例子JSON:
{ "email" : "[email protected]",
"emailVerified" : true,
"links" : [ { "href" : "http://xxx.de/api/users/4f3a73004bb67751bc000011",
"rel" : "self"
},
{ "href" : "http://xxx.de:/api/users/4f3a73004bb67751bc000011/followers",
"rel" : "https://xxx.com/rels/collection/follower"
},
{ "href" : "http://xxx.de/api/users/4f3a73004bb67751bc000011/friends",
"rel" : "https://xxx.com/rels/collection/friend"
},
{ "href" : "http://xxx.de/api/users/4f3a73004bb67751bc000011/activity_stream",
"rel" : "https://xxx.com/rels/activity_stream"
}
],
"profile" : { "description" : "",
"gender" : "male",
"links" : [ { "href" : "xxx.de/uploads/profile_images/xxx.png",
"rel" : "https://xxx.com/rels/image"
},
{ "href" : "http://xxx.de/api/users/xxx/profile",
"rel" : "self"
}
],
"name" : "Foo Bar",
"status" : "Status",
"timezone" : "CET"
},
"slug" : "foobaar",
"username" : "foobaar"
}
訪問方法:
public static User parseUser(String json) {
JSONObject jsonObject;
Gson gson = new Gson();
try {
jsonObject = new JSONObject(json);
Log.v(TAG,jsonObject.toString(2));
User u = gson.fromJson(jsonObject.toString(), User.class);
return u;
} catch (JSONException e){
Log.e(TAG, "There was an error parsing the JSON (USER)" + e);
}
return null;
}
我的錯誤在哪裏?我可以用GSON像這樣使用HashMap嗎?在此先感謝