每种类型的自定义Json.NET串行设置 [英] Custom Json.NET serializer settings per type

问题描述

我使用它使用全球HttpConfiguration类指定JsonFormatter设置的ApiController。我可以全局设置序列设置很容易如下：

I am using an ApiController which uses the global HttpConfiguration class to specify the JsonFormatter settings. I can globally set serialization settings as follows very easily:

config.Formatters.JsonFormatter.SerializerSettings.PreserveReferencesHandling = PreserveReferencesHandling.Objects;

问题是，并非所有的设置适用于所有类型在我的项目。我要指定执行多态系列化的特定类型的自定义TypeNameHandling和活页夹选项。

The problem is that not all settings apply to all types in my project. I want to specify custom TypeNameHandling and Binder options for specific types that perform polymorphic serialization.

我怎么可以在每个类型的，或者至少在每个ApiController的基础上指定JsonFormatter.SerializationSettings？

How can I specify JsonFormatter.SerializationSettings on a per-type or at the least on a per-ApiController basis?

推荐答案

根据上述您的评论，以下是每个控制器配置的例子：

Based on your comment above, following is an example of per-controller configuration:

[MyControllerConfig]
public class ValuesController : ApiController

---

[AttributeUsage(AttributeTargets.Class, AllowMultiple = false, Inherited = true)]
public class MyControllerConfigAttribute : Attribute, IControllerConfiguration
{
    public void Initialize(HttpControllerSettings controllerSettings, HttpControllerDescriptor controllerDescriptor)
    {
        //remove the existing Json formatter as this is the global formatter and changing any setting on it
        //would effect other controllers too.
        controllerSettings.Formatters.Remove(controllerSettings.Formatters.JsonFormatter);

        JsonMediaTypeFormatter formatter = new JsonMediaTypeFormatter();
        formatter.SerializerSettings.PreserveReferencesHandling = PreserveReferencesHandling.All;
        controllerSettings.Formatters.Insert(0, formatter);
    }
}

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