我正在使用facebook api,它search method返回一个json响应,如下所示:
{
"data": [
{
"id": "1",
"message": "Heck of a babysitter...",
"name": "Baby eating a watermelon",
"type": "video"
},
{
"id": "2",
"message": "Great Produce Deals",
"type": "status"
}
]
}
我有一个类似的类结构:
[DataContract]
public class Item
{
[DataMember(Name = "id")]
public string Id { get; set; }
}
[DataContract]
public class Status : Item
{
[DataMember(Name = "message")]
public string Message { get; set; }
}
[DataContract]
public class Video : Item
{
[DataMember(Name = "string")]
public string Name { get; set; }
[DataMember(Name = "message")]
public string Message { get; set; }
}
[DataContract]
public class SearchResults
{
[DataMember(Name = "data")]
public List<Item> Results { get; set; }
}
如何根据
type
属性使用正确的子类? 最佳答案
如果你使用
System.Web.Script.Serialization.JavaScriptSerializer
可以使用构造函数中的重载添加自己的类解析器:
JavaScriptSerializer myserializer = new JavaScriptSerializer(new FacebookResolver());
如何实现这一点的示例可以在此处找到,因此:JavaScriptSerializer with custom Type
但你应该换掉
"type": "video"
部分到
"__type": "video"
因为这是全班的惯例。
下面是一个例子:
public class FacebookResolver : SimpleTypeResolver
{
public FacebookResolver() { }
public override Type ResolveType(string id)
{
if(id == "video") return typeof(Video);
else if (id == "status") return typeof(Status)
else return base.ResolveType(id);
}
}