我正在编写客户端应用程序,它应该处理服务器响应.回复是
JSON.我决定使用Json.NET来反序列化它们.我无法简化或修改这些响应(在服务器端).这种特定JSON响应的特殊困难是不同的对象类型在同一个数组中：散列和文件数组.所以,我想直接将这个数组反序列化为强类型对象,而不是对象数组.我认为应该可以使用CustomCreationConverter实现,但我无法想象如何.
JSON：
{
"files":
[
"hash string",[
["first file name",12],["second file name",34]
]
]
}
对象结构,我正在努力实现：
public class RootObject
{
[JsonProperty("files")]
public FilesContainer Container
{
get;
set;
}
}
public class FilesContainer
{
public string Hash
{
get;
set;
}
public File[] Files
{
get;
set;
}
}
[JsonConverter(typeof(FileJsonConverter))]
public class File
{
public string Name
{
get;
set;
}
public int Size
{
get;
set;
}
}
class FileJsonConverter : JsonConverter
{
public override bool CanConvert(Type objectType)
{
throw new NotImplementedException();
}
public override object ReadJson(JsonReader reader,Type objectType,object existingValue,JsonSerializer serializer)
{
File obj = new File
{
Name = reader.ReadAsString(),Size = reader.ReadAsInt32().GetValueOrDefault()
};
reader.Read();
return obj;
}
public override void WriteJson(JsonWriter writer,object value,JsonSerializer serializer)
{
throw new NotImplementedException();
}
}
解决方法
我终于想出了如何做到这一点.我需要在JsonConverter中使用serializer.Deserialize.所以,这是一个有效的例子.
class Program
{
static string json = @"{
""files"":
[
""hash string"",[
[""first file name"",[""second file name"",34]
]
]
}";
static void Main(string[] args)
{
RootObject container = JsonConvert.DeserializeObject<RootObject>(json);
}
}
public class RootObject
{
[JsonProperty("files")]
public FilesContainer Container
{
get;
set;
}
}
[JsonConverter(typeof(FilesContainerJsonConverter))]
public class FilesContainer
{
public string Hash
{
get;
set;
}
public File[] Files
{
get;
set;
}
}
public class FilesContainerJsonConverter : JsonConverter
{
public override bool CanConvert(Type objectType)
{
throw new NotImplementedException();
}
public override object ReadJson(JsonReader reader,JsonSerializer serializer)
{
FilesContainer obj = new FilesContainer();
obj.Hash = reader.ReadAsString();
reader.Read(); // to StartArray
obj.Files = serializer.Deserialize<File[]>(reader);
reader.Read(); // to EndArray
return obj;
}
public override void WriteJson(JsonWriter writer,JsonSerializer serializer)
{
throw new NotImplementedException();
}
}
[JsonConverter(typeof(FileJsonConverter))]
public class File
{
public string Name
{
get;
set;
}
public int Size
{
get;
set;
}
}
class FileJsonConverter : JsonConverter
{
public override bool CanConvert(Type objectType)
{
throw new NotImplementedException();
}
public override object ReadJson(JsonReader reader,Size = reader.ReadAsInt32().GetValueOrDefault()
};
reader.Read(); // to EndArray
return obj;
}
public override void WriteJson(JsonWriter writer,JsonSerializer serializer)
{
throw new NotImplementedException();
}
}