c# - 我如何选择退出 JSON 契约(Contract)解析器

Question

我们有一个 Json.NET 设置，它将契约(Contract)解析器设置为 CamelCasePropertyNamesContractResolver。但是，对于某些类型，我想选择退出 camelCasing 行为。是否可以通过以某种方式注释这些类型来做到这一点？

Answer 1

是的，截至 Json.Net version 9.0.1 (2016 年 6 月)，[JsonObject] 和 [JsonProperty] 属性都支持 NamingStrategyType 参数。因此，您可以使用 CamelCasePropertyNamesContractResolver 设置默认命名方案，然后选择退出甚至更改为使用这些属性的特定类或属性的不同策略。

这是一个简短的演示:

public class Program
{
    public static void Main(string[] args)
    {
        Foo foo = new Foo
        {
            CamelCasedProperty = "abc def",
            AlsoCamelCasedButChildPropsAreNot = new Bar
            {
                SomeProperty = "fizz buzz",
                AnotherProperty = "whiz bang"
            },
            ThisOneOptsOutOfCamelCasing = "blah blah",
            ThisOneIsSnakeCased = "senssssational"
        };

        var settings = new JsonSerializerSettings
        {
            // set up default naming scheme
            ContractResolver = new CamelCasePropertyNamesContractResolver(),
            Formatting = Formatting.Indented
        };

        string json = JsonConvert.SerializeObject(foo, settings);
        Console.WriteLine(json);
    }
}

class Foo
{
    public string CamelCasedProperty { get; set; }
    public Bar AlsoCamelCasedButChildPropsAreNot { get; set; }

    [JsonProperty(NamingStrategyType = typeof(DefaultNamingStrategy))]
    public string ThisOneOptsOutOfCamelCasing { get; set; }

    [JsonProperty(NamingStrategyType = typeof(SnakeCaseNamingStrategy))]
    public string ThisOneIsSnakeCased { get; set; }
}

[JsonObject(NamingStrategyType = typeof(DefaultNamingStrategy))]
class Bar
{
    public string SomeProperty { get; set; }
    public string AnotherProperty { get; set; }
}

输出:

{
  "camelCasedProperty": "abc def",
  "alsoCamelCasedButChildPropsAreNot": {
    "SomeProperty": "fizz buzz",
    "AnotherProperty": "whiz bang"
  },
  "ThisOneOptsOutOfCamelCasing": "blah blah",
  "this_one_is_snake_cased": "senssssational"
}

fiddle :