Расшифровать JSON Android

Question

Мне трудно декодировать данные JSON. Пожалуйста, помогите. Вот мой код: Вот как выглядит мой JSON:

[
   {"0":"6","ID":"6","1":"USA","Country":"USA","2":"1","Age":"1","3":"Type 5","Type":"Type 5","4":"Brand5","Brands":"Brand5","5":"ashfghdfhhgfdhhdfhhdfg\t\t\t\t\t\t","Contents":"ashfghdfhhgfdhhdfhhdfg\t\t\t\t\t\t","6":"0000-00-00 00:00:00","Time":"0000-00-00 00:00:00"},
   {"0":"7","ID":"7","1":"Europe","Country":"Europe","2":"1","Age":"1","3":"Type 5","Type":"Type 5","4":"Brand5","Brands":"Brand5","5":"\t\t\t\tafsfsdgfgh\t\t\t\t\t","Contents":"\t\t\t\tafsfsdgfgh\t\t\t\t\t","6":"0000-00-00 00:00:00","Time":"0000-00-00 00:00:00"},
   {"0":"9","ID":"9","1":"USA","Country":"USA","2":"4","Age":"4","3":"Type3","Type":"Type3","4":"Brand4","Brands":"Brand4","5":"sfdsggfhgfhfhg\t\t","Contents":"sfdsggfhgfhfhg\t\t","6":"0000-00-00 00:00:00","Time":"0000-00-00 00:00:00"},
   {"0":"10","ID":"10","1":"Europe","Country":"Europe","2":"6","Age":"6","3":"Type3","Type":"Type3","4":"Brand4","Brands":"Brand4","5":"\t\t\t\t\tsfgfdgfhhgfdhghg\t\t\t","Contents":"\t\t\t\t\tsfgfdgfhhgfdhghg\t\t\t","6":"2011-06-03 16:07:08","Time":"2011-06-03 16:07:08"}
]

Это мой класс:

public class Foo {

@SerializedName("0")
public String zero;

@SerializedName("ID")
public String ID;

@SerializedName("1")
public String unu;

@SerializedName("Country")
public String Country;

@SerializedName("2")
public String doi;

@SerializedName("Age")
public String Age;

@SerializedName("3")
public String trei;

@SerializedName("Type")
public String Type;

@SerializedName("4")
public String patru;

@SerializedName("Brands")
public String Brands;

@SerializedName("5")
public String cinci;

@SerializedName("Contents")
public String Contents;

@SerializedName("6")
public String sase;

@SerializedName("Time")
public String Time;
  }

Это мой список классов типа Foo:

public class FooList {

public List<Foo> listFoo;

}

И вот как я пытаюсь его декодировать:

        Gson gson = new Gson();
        Type fooType=new TypeToken<FooList>() { }.getType();
        FooList vaccines=gson.fromJson(json, fooType);

Спасибо за помощь.

Answer 1

Вы почти получили это. Следующие примеры все десериализованы и работают как ожидалось.

Десериализация в массив Foo:

public class Foo
{
  @SerializedName("0")
  String zero;

  @SerializedName("ID")
  String ID;

  @SerializedName("1")
  String unu;

  @SerializedName("Country")
  String Country;

  @SerializedName("2")
  String doi;

  @SerializedName("Age")
  String Age;

  @SerializedName("3")
  String trei;

  @SerializedName("Type")
  String Type;

  @SerializedName("4")
  String patru;

  @SerializedName("Brands")
  String Brands;

  @SerializedName("5")
  String cinci;

  @SerializedName("Contents")
  String Contents;

  @SerializedName("6")
  String sase;

  @SerializedName("Time")
  String Time;

  @Override
  public String toString()
  {
    return String.format(
        "{Foo: zero=%s, ID=%s, unu=%s, Country=%s, doi=%s, Age=%s, trei=%s, Type=%s, patru=%s, Brands=%s, cinci=%s, Contents=%s, sase=%s, Time=%s}", 
        zero, ID, unu, Country, doi, Age, trei, Type, patru, Brands, cinci, Contents, sase, Time);
  }

  public static void main(String[] args) throws Exception
  {
    Gson gson = new Gson();
    Foo[] foos = gson.fromJson(new FileReader("input.json"), Foo[].class);
    System.out.println(Arrays.toString(foos));
  }
}

Десериализовать в список Foo:

  public static void main(String[] args) throws Exception
  {
    Gson gson = new Gson();
    Type listOfFooType = new TypeToken<List<Foo>>(){}.getType();
    List<Foo> foos = gson.fromJson(new FileReader("input.json"), listOfFooType);
    System.out.println(foos);
  }

Десериализация в FooList с использованием измененного JSON Таннера:

public class Foo
{
  ...


  public static void main(String[] args) throws Exception
  {
    Gson gson = new Gson();
    FooList fooList = gson.fromJson(new FileReader("input.json"), FooList.class);
    System.out.println(fooList.listFoo);
  }
}

class FooList
{
  List<Foo> listFoo;
}

Answer 2

Что если вы попробуете:

Gson gson = new Gson();
FooList vaccines = gson.fromJson(json, FooList.class);

Какую ошибку / исключение вы получаете?

ОБНОВЛЕНИЕ:

Проблема в том, что выпытаемся декодировать List элементов в объект, который содержит список элементов.Если вы хотите декодировать в FooList, тогда ваша строка JSON должна выглядеть следующим образом:

{ "listFoo":
  [
    {"0":"6","ID":"6","1":"USA","Country":"USA","2":"1","Age":"1","3":"Type 5","Type":"Type 5","4":"Brand5","Brands":"Brand5","5":"ashfghdfhhgfdhhdfhhdfg\t\t\t\t\t\t","Contents":"ashfghdfhhgfdhhdfhhdfg\t\t\t\t\t\t","6":"0000-00-00 00:00:00","Time":"0000-00-00 00:00:00"},
    {"0":"7","ID":"7","1":"Europe","Country":"Europe","2":"1","Age":"1","3":"Type 5","Type":"Type 5","4":"Brand5","Brands":"Brand5","5":"\t\t\t\tafsfsdgfgh\t\t\t\t\t","Contents":"\t\t\t\tafsfsdgfgh\t\t\t\t\t","6":"0000-00-00 00:00:00","Time":"0000-00-00 00:00:00"},
    {"0":"9","ID":"9","1":"USA","Country":"USA","2":"4","Age":"4","3":"Type3","Type":"Type3","4":"Brand4","Brands":"Brand4","5":"sfdsggfhgfhfhg\t\t","Contents":"sfdsggfhgfhfhg\t\t","6":"0000-00-00 00:00:00","Time":"0000-00-00 00:00:00"},
    {"0":"10","ID":"10","1":"Europe","Country":"Europe","2":"6","Age":"6","3":"Type3","Type":"Type3","4":"Brand4","Brands":"Brand4","5":"\t\t\t\t\tsfgfdgfhhgfdhghg\t\t\t","Contents":"\t\t\t\t\tsfgfdgfhhgfdhghg\t\t\t","6":"2011-06-03 16:07:08","Time":"2011-06-03 16:07:08"}
  ]
}

Если у вас нет выбора, кроме как работать с предоставленной вами строкой JSON, то вы могли бы сделать что-топонравилась эта работа:

List listOfObjects = g.fromJson(json, List.class);

for(Object obj : listOfObjects) {
  FooList.listFoo.add((Foo) obj);
}