使用Json.NET序列化和反序列化对象时，声明命名规则

在使用Json.NET来序列化和反序列化对象时，我们可以在类或者属性上声明使用什么命名规则，Json.NET目前支持三种命名规则：

• 帕斯卡命名法（默认）：DefaultNamingStrategy
• 驼峰命名法：CamelCaseNamingStrategy
• 下划线命名法：SnakeCaseNamingStrategy

这三个类可以通过JsonObjectAttribute声明在类上，也可以通过JsonPropertyAttribute声明在属性或者字段上，如下代码所示：

using Newtonsoft.Json.Serialization;
using Newtonsoft.Json;namespace Net8JsonNameDemo
{//给整个类声明使用驼峰命名法，来序列化和反序列化Json[JsonObject(NamingStrategyType = typeof(CamelCaseNamingStrategy))]class People{public required string Name{get;set;}public int? Age{get;set;}public string? Description{get;set;}//给某个属性声明使用下划线命名法，来序列化和反序列化Json[JsonProperty(NamingStrategyType = typeof(SnakeCaseNamingStrategy))]public decimal? BaseSalary{get;set;}}//给整个类声明使用帕斯卡命名法（默认就是帕斯卡命名法），来序列化和反序列化Json[JsonObject(NamingStrategyType = typeof(DefaultNamingStrategy))]class Person{public required string Name{get;set;}//给某个属性声明使用驼峰命名法，来序列化和反序列化Json[JsonProperty(NamingStrategyType = typeof(CamelCaseNamingStrategy))]public int? Age{get;set;}public string? Description{get;set;}//给某个属性声明使用驼峰命名法，来序列化和反序列化Json[JsonProperty(NamingStrategyType = typeof(CamelCaseNamingStrategy))]public decimal? BaseSalary{get;set;}}internal class Program{static void Main(string[] args){People people = new People(){Name = "王大锤, Jack Wang",Age = 16,BaseSalary = 1000,Description = "This is a demo text，这是示例文本"};string json = JsonConvert.SerializeObject(people, Formatting.Indented);Console.WriteLine(json);People? newPeople = JsonConvert.DeserializeObject<People>(json);Console.WriteLine("newPeople Name={0}; Age={1}; BaseSalary={2}; Description={3}", newPeople?.Name, newPeople?.Age, newPeople?.BaseSalary?.ToString(), newPeople?.Description?.ToString());Person person = new Person(){Name = "张小明, James Zhang",Age = 25,BaseSalary = 2000,Description = "This is a demo text2，这是示例文本2"};Console.WriteLine();Console.WriteLine();Console.WriteLine();json = JsonConvert.SerializeObject(person, Formatting.Indented);Console.WriteLine(json);Person? newPerson = JsonConvert.DeserializeObject<Person>(json);Console.WriteLine("newPerson Name={0}; Age={1}; BaseSalary={2}; Description={3}", newPerson?.Name, newPerson?.Age, newPerson?.BaseSalary?.ToString(), newPerson?.Description?.ToString());Console.WriteLine();Console.WriteLine();Console.WriteLine();Console.WriteLine("Press any key to end...");Console.ReadLine();}}
}

运行上面的代码，结果如下所示：

{"name": "王大锤, Jack Wang","age": 16,"description": "This is a demo text，这是示例文本","base_salary": 1000.0
}
newPeople Name=王大锤, Jack Wang; Age=16; BaseSalary=1000.0; Description=This is a demo text，这是示例文本{"Name": "张小明, James Zhang","age": 25,"Description": "This is a demo text2，这是示例文本2","baseSalary": 2000.0
}
newPerson Name=张小明, James Zhang; Age=25; BaseSalary=2000.0; Description=This is a demo text2，这是示例文本2Press any key to end...

 

可以参考下面的官方文档，有更多方法来声明Json.NET的命名规则：

Camel case property names

Snake case property names

JsonObjectAttribute NamingStrategy setting

Configure NamingStrategy dictionary serialization

Configure NamingStrategy property name serialization