在C#中,可以使用Json.NET庫(kù)來自定義反序列化對(duì)象。下面是一個(gè)簡(jiǎn)單的例子:
using Newtonsoft.Json;
public class Person
{
public string Name { get; set; }
public int Age { get; set; }
}
public class CustomDeserializer : JsonConverter
{
public override bool CanConvert(Type objectType)
{
return objectType == typeof(Person);
}
public override object ReadJson(JsonReader reader, Type objectType, object existingValue, JsonSerializer serializer)
{
JObject jObject = JObject.Load(reader);
Person person = new Person();
person.Name = jObject.GetValue("name").ToString();
person.Age = jObject.GetValue("age").Value<int>();
return person;
}
public override void WriteJson(JsonWriter writer, object value, JsonSerializer serializer)
{
throw new NotImplementedException();
}
}
class Program
{
static void Main()
{
string json = "{\"name\":\"John\",\"age\":30}";
JsonSerializerSettings settings = new JsonSerializerSettings();
settings.Converters.Add(new CustomDeserializer());
Person person = JsonConvert.DeserializeObject<Person>(json, settings);
Console.WriteLine($"Name: {person.Name}, Age: {person.Age}");
}
}
在上面的例子中,我們定義了一個(gè)自定義的JsonConverter類CustomDeserializer,用于反序列化Person對(duì)象。在ReadJson方法中,我們手動(dòng)提取json中的數(shù)據(jù)并創(chuàng)建一個(gè)Person對(duì)象。然后將這個(gè)CustomDeserializer類添加到JsonSerializerSettings中,并傳遞給JsonConvert.DeserializeObject方法來實(shí)現(xiàn)自定義反序列化。