C# Newtonsoft Json序列化/反序列化嵌套属性
我的班级结构如下C# Newtonsoft Json序列化/反序列化嵌套属性,c#,json.net,json-deserialization,json-serialization,C#,Json.net,Json Deserialization,Json Serialization,我的班级结构如下 public class MainClass { public string MyStringValue {get;set;} public SecondClass MyClassValue {get;set;} } public class SecondClass { public string Value {get;set;} } 我设置了以下值: SecondClass secondClass = new SecondClass { Value
public class MainClass
{
public string MyStringValue {get;set;}
public SecondClass MyClassValue {get;set;}
}
public class SecondClass
{
public string Value {get;set;}
}
我设置了以下值:
SecondClass secondClass = new SecondClass
{
Value = "Test"
}
MainClass mainClass = new MainClass
{
MyStringValue = "String Value",
MyClassValue = secondClass
}
当我序列化类“mainClass”时,我得到以下Json(这对我来说是绝对清楚的):
在某些情况下,我需要序列化为以下内容:
{
"MyStringValue":"String Value",
"MyClassValue": "Test"
}
子类的字段名始终为“Value”,如何做到这一点?
(对于相同的结构,我还需要一个反序列化程序)上层json与后者不同。未经转换,无法将主类序列化为
{“MyStringValue”:“String Value”,“MyClassValue”:“Test”}
var resultObjet = new {
MyStringValue = mainClass.MyStringValue,
MyClassValue = mainClass.SecondClass.MyClassValue
}
然后可以序列化它。上面的json与后面的json不同。未经转换,无法将主类序列化为
{“MyStringValue”:“String Value”,“MyClassValue”:“Test”}
var resultObjet = new {
MyStringValue = mainClass.MyStringValue,
MyClassValue = mainClass.SecondClass.MyClassValue
}
然后您可以序列化它。为了实现这一点,您需要一个用于反序列化的新类。但是,对于序列化,您可以动态创建匿名类型,如下所示:
void Main()
{
// import Newtonsoft.JsonConvert
SecondClass secondClass = new SecondClass
{
Value = "Test"
};
MainClass mainClass = new MainClass
{
MyStringValue = "String Value",
MyClassValue = secondClass
};
// The JSON as you expect
var origJson = JsonConvert.SerializeObject(mainClass);
Console.WriteLine(origJson);
// The JSON Deserialized and the second class value outputted
Console.WriteLine(JsonConvert.DeserializeObject<MainClass>(origJson).MyClassValue.Value);
// The modified JSON as you wanted it
var modJson = JsonConvert.SerializeObject(new { mainClass.MyStringValue, MyClassValue = mainClass.MyClassValue.Value });
Console.WriteLine(modJson);
// The modified JSON deserialized
var deserialized = JsonConvert.DeserializeObject<ModMainClass>(modJson);
Console.WriteLine(deserialized.MyStringValue);
}
public class ModMainClass
{
public string MyStringValue { get; set; }
public string MyClassValue { get; set; }
}
public class MainClass
{
public string MyStringValue {get;set;}
public SecondClass MyClassValue {get;set;}
}
public class SecondClass
{
public string Value { get; set; }
}
void Main()
{
//导入Newtonsoft.JsonConvert
SecondClass SecondClass=新的SecondClass
{
Value=“测试”
};
MainClass MainClass=新的MainClass
{
MyStringValue=“字符串值”,
MyClassValue=secondClass
};
//正如您所期望的那样,JSON
var origJson=JsonConvert.SerializeObject(mainClass);
控制台写入线(origJson);
//JSON被反序列化并输出第二个类值
WriteLine(JsonConvert.DeserializeObject(origJson.MyClassValue.Value));
//根据需要修改JSON
var modJson=JsonConvert.SerializeObject(新的{mainClass.MyStringValue,MyClassValue=mainClass.MyClassValue.Value});
Console.WriteLine(modJson);
//修改后的JSON被反序列化
var deserialized=JsonConvert.DeserializeObject(modJson);
WriteLine(反序列化的.MyStringValue);
}
公共类modmain类
{
公共字符串MyStringValue{get;set;}
公共字符串MyClassValue{get;set;}
}
公共类主类
{
公共字符串MyStringValue{get;set;}
公共第二类MyClassValue{get;set;}
}
公务舱二等舱
{
公共字符串值{get;set;}
}
为此,您需要一个新类进行反序列化。但是,对于序列化,您可以动态创建匿名类型,如下所示:
void Main()
{
// import Newtonsoft.JsonConvert
SecondClass secondClass = new SecondClass
{
Value = "Test"
};
MainClass mainClass = new MainClass
{
MyStringValue = "String Value",
MyClassValue = secondClass
};
// The JSON as you expect
var origJson = JsonConvert.SerializeObject(mainClass);
Console.WriteLine(origJson);
// The JSON Deserialized and the second class value outputted
Console.WriteLine(JsonConvert.DeserializeObject<MainClass>(origJson).MyClassValue.Value);
// The modified JSON as you wanted it
var modJson = JsonConvert.SerializeObject(new { mainClass.MyStringValue, MyClassValue = mainClass.MyClassValue.Value });
Console.WriteLine(modJson);
// The modified JSON deserialized
var deserialized = JsonConvert.DeserializeObject<ModMainClass>(modJson);
Console.WriteLine(deserialized.MyStringValue);
}
public class ModMainClass
{
public string MyStringValue { get; set; }
public string MyClassValue { get; set; }
}
public class MainClass
{
public string MyStringValue {get;set;}
public SecondClass MyClassValue {get;set;}
}
public class SecondClass
{
public string Value { get; set; }
}
void Main()
{
//导入Newtonsoft.JsonConvert
SecondClass SecondClass=新的SecondClass
{
Value=“测试”
};
MainClass MainClass=新的MainClass
{
MyStringValue=“字符串值”,
MyClassValue=secondClass
};
//正如您所期望的那样,JSON
var origJson=JsonConvert.SerializeObject(mainClass);
控制台写入线(origJson);
//JSON被反序列化并输出第二个类值
WriteLine(JsonConvert.DeserializeObject(origJson.MyClassValue.Value));
//根据需要修改JSON
var modJson=JsonConvert.SerializeObject(新的{mainClass.MyStringValue,MyClassValue=mainClass.MyClassValue.Value});
Console.WriteLine(modJson);
//修改后的JSON被反序列化
var deserialized=JsonConvert.DeserializeObject(modJson);
WriteLine(反序列化的.MyStringValue);
}
公共类modmain类
{
公共字符串MyStringValue{get;set;}
公共字符串MyClassValue{get;set;}
}
公共类主类
{
公共字符串MyStringValue{get;set;}
公共第二类MyClassValue{get;set;}
}
公务舱二等舱
{
公共字符串值{get;set;}
}
你有两个选择一个是@Simonare提到的
或者将类的结构器MainClass
更改为
public class MainClass<T>
{
public string MyStringValue { get; set; }
public T MyClassValue { get; set; }
}
public class SecondClass
{
public string Value { get; set; }
}
或
var c=newmainclass();
你有两个选择一个是@Simonare提到的
或者将类的结构器MainClass
更改为
public class MainClass<T>
{
public string MyStringValue { get; set; }
public T MyClassValue { get; set; }
}
public class SecondClass
{
public string Value { get; set; }
}
或
var c=newmainclass();
实现这一点的一种方法是使用带有的。例如,可以为类创建自定义转换器:
public class SecondClassConverter : JsonConverter
{
public override bool CanConvert(Type objectType)
{
return objectType == typeof(SecondClass);
}
public override object ReadJson(JsonReader reader, Type objectType, object existingValue, JsonSerializer serializer)
{
try
{
if (reader.TokenType == JsonToken.String)
{
return new SecondClass
{
Value = reader.Value.ToString()
};
}
}
catch (Exception ex)
{
throw new JsonSerializationException($"Error converting value {reader.Value} to type '{objectType}'.", ex);
}
throw new JsonSerializationException($"Unexpected token {reader.TokenType} when parsing {nameof(SecondClass)}.");
}
public override void WriteJson(JsonWriter writer, object value, JsonSerializer serializer)
{
if (value == null)
{
writer.WriteNull();
return;
}
var secondClass = (SecondClass)value;
writer.WriteValue(secondClass.Value);
}
}
然后将jsonconverteratertribute
与该转换器一起使用:
public class MainClass
{
public string MyStringValue { get; set; }
[JsonConverter(typeof(SecondClassConverter))]
public SecondClass MyClassValue { get; set; }
}
public class SecondClass
{
public string Value { get; set; }
}
这将允许MainClass
的所有序列化使用SecondClassConverter
的WriteJson
方法:
static void Main(string[] args)
{
SecondClass secondClass = new SecondClass
{
Value = "Test"
};
MainClass mainClass = new MainClass
{
MyStringValue = "String Value",
MyClassValue = secondClass
};
var json = JsonConvert.SerializeObject(mainClass);
Console.WriteLine(json);
Console.ReadLine();
}
static void Main(string[] args)
{
var json = "{ \"MyStringValue\":\"String Value\", \"MyClassValue\": \"Test\" }";
var decodedJson = JsonConvert.DeserializeObject<MainClass>(json);
Console.WriteLine($"decodedJson.MyStringValue: {decodedJson.MyStringValue}");
Console.WriteLine($"decodedJson.MyClassValue.Value: {decodedJson.MyClassValue.Value}");
Console.ReadLine();
}
提供所需的JSON结果:
反序列化也可以工作,利用
SecondClassConverter
的ReadJson
方法:
static void Main(string[] args)
{
SecondClass secondClass = new SecondClass
{
Value = "Test"
};
MainClass mainClass = new MainClass
{
MyStringValue = "String Value",
MyClassValue = secondClass
};
var json = JsonConvert.SerializeObject(mainClass);
Console.WriteLine(json);
Console.ReadLine();
}
static void Main(string[] args)
{
var json = "{ \"MyStringValue\":\"String Value\", \"MyClassValue\": \"Test\" }";
var decodedJson = JsonConvert.DeserializeObject<MainClass>(json);
Console.WriteLine($"decodedJson.MyStringValue: {decodedJson.MyStringValue}");
Console.WriteLine($"decodedJson.MyClassValue.Value: {decodedJson.MyClassValue.Value}");
Console.ReadLine();
}
static void Main(字符串[]args)
{
var json=“{\'MyStringValue\':\'String Value\',\'MyClassValue\':\'Test\'”;
var decodedJson=JsonConvert.DeserializeObject(json);
Console.WriteLine($“decodedJson.MyStringValue:{decodedJson.MyStringValue}”);
WriteLine($“decodedJson.MyClassValue.Value:{decodedJson.MyClassValue.Value}”);
Console.ReadLine();
}
提供输出为:
实现这一点的一种方法是使用带有的。例如,可以为类创建自定义转换器:
public class SecondClassConverter : JsonConverter
{
public override bool CanConvert(Type objectType)
{
return objectType == typeof(SecondClass);
}
public override object ReadJson(JsonReader reader, Type objectType, object existingValue, JsonSerializer serializer)
{
try
{
if (reader.TokenType == JsonToken.String)
{
return new SecondClass
{
Value = reader.Value.ToString()
};
}
}
catch (Exception ex)
{
throw new JsonSerializationException($"Error converting value {reader.Value} to type '{objectType}'.", ex);
}
throw new JsonSerializationException($"Unexpected token {reader.TokenType} when parsing {nameof(SecondClass)}.");
}
public override void WriteJson(JsonWriter writer, object value, JsonSerializer serializer)
{
if (value == null)
{
writer.WriteNull();
return;
}
var secondClass = (SecondClass)value;
writer.WriteValue(secondClass.Value);
}
}
然后将jsonconverteratertribute
与该转换器一起使用:
public class MainClass
{
public string MyStringValue { get; set; }
[JsonConverter(typeof(SecondClassConverter))]
public SecondClass MyClassValue { get; set; }
}
public class SecondClass
{
public string Value { get; set; }
}
这将允许MainClass
的所有序列化使用SecondClassConverter
的WriteJson
方法:
static void Main(string[] args)
{
SecondClass secondClass = new SecondClass
{
Value = "Test"
};
MainClass mainClass = new MainClass
{
MyStringValue = "String Value",
MyClassValue = secondClass
};
var json = JsonConvert.SerializeObject(mainClass);
Console.WriteLine(json);
Console.ReadLine();
}
static void Main(string[] args)
{
var json = "{ \"MyStringValue\":\"String Value\", \"MyClassValue\": \"Test\" }";
var decodedJson = JsonConvert.DeserializeObject<MainClass>(json);
Console.WriteLine($"decodedJson.MyStringValue: {decodedJson.MyStringValue}");
Console.WriteLine($"decodedJson.MyClassValue.Value: {decodedJson.MyClassValue.Value}");
Console.ReadLine();
}
提供所需的JSON结果:
反序列化也可以工作,利用
SecondClassConverter
的ReadJson
方法:
static void Main(string[] args)
{
SecondClass secondClass = new SecondClass
{
Value = "Test"
};
MainClass mainClass = new MainClass
{
MyStringValue = "String Value",
MyClassValue = secondClass
};
var json = JsonConvert.SerializeObject(mainClass);
Console.WriteLine(json);
Console.ReadLine();
}
static void Main(string[] args)
{
var json = "{ \"MyStringValue\":\"String Value\", \"MyClassValue\": \"Test\" }";
var decodedJson = JsonConvert.DeserializeObject<MainClass>(json);
Console.WriteLine($"decodedJson.MyStringValue: {decodedJson.MyStringValue}");
Console.WriteLine($"decodedJson.MyClassValue.Value: {decodedJson.MyClassValue.Value}");
Console.ReadLine();
}
static void Main(字符串[]args)
{
var json=“{\'MyStringValue\':\'String Value\',\'MyClassValue\':\'Test\'”;
var decodedJson=JsonConvert.DeserializeObject(json);
Console.WriteLine($“decodedJson.MyStringValue:{decodedJson.MyStringValue}”);
WriteLine($“decodedJson.MyClassValue.Value:{decodedJson.MyClassValue.Value}”);
Console.ReadLine();
}
提供输出为:
谢谢,这正是我想要的。我在全局配置中添加了它:settings.Converters.A