如何在MVC5项目中将Json.NET用于JSON模型绑定？

我终于找到了答案。基本上，我不需要的

MediaTypeFormatter

Microsoft.AspNet.WeApi

解决方案是使用自定义值提供程序工厂。这是所需的代码。

    public class JsonNetValueProviderFactory : ValueProviderFactory    {        public override IValueProvider GetValueProvider(ControllerContext controllerContext)        { // first make sure we have a valid context if (controllerContext == null)     throw new ArgumentNullException("controllerContext"); // now make sure we are dealing with a json request if (!controllerContext.HttpContext.Request.ContentType.StartsWith("application/json", StringComparison.OrdinalIgnoreCase))     return null; // get a generic stream reader (get reader for the http stream) var streamReader = new StreamReader(controllerContext.HttpContext.Request.InputStream); // convert stream reader to a JSON Text Reader var JSonReader = new JsonTextReader(streamReader); // tell JSON to read if (!JSONReader.Read())     return null; // make a new Json serializer var JSonSerializer = new JsonSerializer(); // add the dyamic object converter to our serializer JSONSerializer.Converters.Add(new ExpandoObjectConverter()); // use JSON.NET to deserialize object to a dynamic (expando) object Object JSONObject; // if we start with a "[", treat this as an array if (JSONReader.TokenType == JsonToken.StartArray)     JSonObject = JSONSerializer.Deserialize<List<ExpandoObject>>(JSONReader); else     JSonObject = JSONSerializer.Deserialize<ExpandoObject>(JSONReader); // create a backing store to hold all properties for this deserialization var backingStore = new Dictionary<string, object>(StringComparer.OrdinalIgnoreCase); // add all properties to this backing store AddToBackingStore(backingStore, String.Empty, JSONObject); // return the object in a dictionary value provider so the MVC understands it return new DictionaryValueProvider<object>(backingStore, CultureInfo.CurrentCulture);        }        private static void AddToBackingStore(Dictionary<string, object> backingStore, string prefix, object value)        { var d = value as IDictionary<string, object>; if (d != null) {     foreach (var entry in d)     {         AddToBackingStore(backingStore, MakePropertyKey(prefix, entry.Key), entry.Value);     }     return; } var l = value as IList; if (l != null) {     for (var i = 0; i < l.Count; i++)     {         AddToBackingStore(backingStore, MakeArrayKey(prefix, i), l[i]);     }     return; } // primitive backingStore[prefix] = value;        }        private static string MakeArrayKey(string prefix, int index)        { return prefix + "[" + index.ToString(CultureInfo.InvariantCulture) + "]";        }        private static string MakePropertyKey(string prefix, string propertyName)        { return (String.IsNullOrEmpty(prefix)) ? propertyName : prefix + "." + propertyName;        }    }

您可以在您的

Application_Start

// remove default implementation    ValueProviderFactories.Factories.Remove(ValueProviderFactories.Factories.OfType<JsonValueProviderFactory>().FirstOrDefault());// add our custom onevalueProviderFactories.Factories.Add(new JsonNetValueProviderFactory());

这是为我指出正确方向的文章，也是对价值提供者和模型绑定者的很好解释。