我正在通过gson解析一个Json字符串，这是Json字符串
[
{
"ID": 1,
"Name": "Australia",
"Active": true
},
{
"ID": 3,
"Name": "Kiev",
"Active": true
},
{
"ID": 4,
"Name": "South Africa",
"Active": true
},
{
"ID": 5,
"Name": "Stockholm",
"Active": true
},
{
"ID": 6,
"Name": "Paris",
"Active": true
},
{
"ID": 7,
"Name": "Moscow",
"Active": true
},
{
"ID": 8,
"Name": "New York City",
"Active": true
},
{
"ID": 9,
"Name": "Germany",
"Active": true
},
{
"ID": 10,
"Name": "Copenhagen",
"Active": true
},
{
"ID": 11,
"Name": "Amsterdam",
"Active": true
}
]
这是将要使用的物体
public class MyBranch extends Entity {
public MyBranch () {
super();
}
public MyBranch (int id, String name, String isActive) {
super();
_ID = id;
_Name = name;
_Active = isActive;
}
@Column(name = "id", primaryKey = true)
public int _ID;
public String _Name;
public String _Active;
}
Gson gson = new Gson();
Type t = new TypeToken<List<MyBranch >>() {}.getType();
List<MyBranch > list = (List<MyBranch >) gson.fromJson(json, t);
构建的列表并且它有 10 个对象，但问题是对象的所有数据成员都是空的，我不知道这有什么问题。实体是OrmDroid的实体类。
< code>MyBranch类中的字段名称与< code>json中的字段不匹配，因此您必须使用< code>SerializedName批注。
import com.google.gson.annotations.SerializedName;
public class MyBranch extends Entity {
public MyBranch () {
super();
}
public MyBranch (int id, String name, String isActive) {
super();
_ID = id;
_Name = name;
_Active = isActive;
}
@Column(name = "id", primaryKey = true)
@SerializedName("ID")
public int _ID;
@SerializedName("Name")
public String _Name;
@SerializedName("Active")
public String _Active;
}
编辑:您也可以通过简单地重命名< code>MyBranch字段来避免使用< code>SerializedName注释:
import com.google.gson.annotations.SerializedName;
public class MyBranch extends Entity {
public MyBranch () {
super();
}
public MyBranch (int id, String name, String isActive) {
super();
ID = id;
Name = name;
Active = isActive;
}
@Column(name = "id", primaryKey = true)
public int ID;
public String Name;
public String Active;
}
使用ArrayList而不是List？
Gson gson = new Gson();
Type t = new TypeToken<ArrayList<MyBranch >>() {}.getType();
ArrayList<MyBranch > list = (ArrayList<MyBranch >) gson.fromJson(json, t);
