c# - 网络 API : Configure JSON serializer settings on action or controller level

Question

许多 SO 线程都介绍了在应用程序级别覆盖 Web API 的默认 JSON 序列化程序设置。但是我怎样才能在操作级别配置它的设置呢？例如，我可能想在我的一个操作中使用驼峰式属性进行序列化，而不是在其他操作中。

Answer 1

选项 1(最快)

在操作级别，您可以在使用 Json 方法时始终使用自定义 JsonSerializerSettings 实例:

public class MyController : ApiController
{
    public IHttpActionResult Get()
    {
        var settings = new JsonSerializerSettings
        {
            ContractResolver = new CamelCasePropertyNamesContractResolver()
        };
        var model = new MyModel();
        return Json(model, settings);
    }
}

选项 2( Controller 级别)

您可以创建一个新的 IControllerConfiguration 属性来自定义 JsonFormatter:

public class CustomJsonAttribute : Attribute, IControllerConfiguration 
{
    public void Initialize(HttpControllerSettings controllerSettings, HttpControllerDescriptor controllerDescriptor)
    {
        var formatter = controllerSettings.Formatters.JsonFormatter;

        controllerSettings.Formatters.Remove(formatter);

        formatter = new JsonMediaTypeFormatter
        {
            SerializerSettings =
            {
                ContractResolver = new CamelCasePropertyNamesContractResolver()
            }
        };

        controllerSettings.Formatters.Insert(0, formatter);
    }
}

[CustomJson]
public class MyController : ApiController
{
    public IHttpActionResult Get()
    {
        var model = new MyModel();
        return Ok(model);
    }
}