2，在初始化MVC时替换掉默认的JsonValueProviderFactory。
在Global.asax的Application_Start时，写入以下代码：

ValueProviderFactories.Factories.Remove(ValueProviderFactories.Factories.OfType<JsonValueProviderFactory>().FirstOrDefault()); ValueProviderFactories.Factories.Add(new JsonNetValueProviderFactory());

3，建立新的ModelBinder，命名为JsonNetModelBinder。

namespace MvcJsonNet { using System; using System.ComponentModel; using System.Diagnostics; using System.Globalization; using System.Linq; using System.Web.Mvc; using Newtonsoft.Json; public class JsonNetModelBinder : DefaultModelBinder { BindProperty(ControllerContext controllerContext, ModelBindingContext bindingContext, PropertyDescriptor propertyDescriptor) { Debug.WriteLine("BindProperty"); if (!controllerContext.HttpContext.Request.ContentType.StartsWith("application/json.net", StringComparison .InvariantCultureIgnoreCase)) { //根据Content type来判断，只有json.net这种content type的才会使用该ModelBinder，否则使用默认的Binder base.BindProperty(controllerContext, bindingContext, propertyDescriptor); return; } // need to skip properties that aren't part of the request, else we might hit a StackOverflowException string name = propertyDescriptor.Name; foreach (object attribute in propertyDescriptor.Attributes) { if (attribute is JsonPropertyAttribute) { var jp = attribute as JsonPropertyAttribute; name = jp.PropertyName; } } string fullPropertyKey = CreateSubPropertyName(bindingContext.ModelName, name); if (!bindingContext.ValueProvider.ContainsPrefix(fullPropertyKey)) { return; } // call into the property's model binder IModelBinder propertyBinder = Binders.GetBinder(propertyDescriptor.PropertyType); object originalPropertyValue = propertyDescriptor.GetValue(bindingContext.Model); ModelMetadata propertyMetadata = bindingContext.PropertyMetadata[propertyDescriptor.Name]; propertyMetadata.Model = originalPropertyValue; var innerBindingContext = new ModelBindingContext { ModelMetadata = propertyMetadata, ModelName = fullPropertyKey, ModelState = bindingContext.ModelState, ValueProvider = bindingContext.ValueProvider }; object newPropertyValue = GetPropertyValue(controllerContext, innerBindingContext, propertyDescriptor, propertyBinder); propertyMetadata.Model = newPropertyValue; // validation ModelState modelState = bindingContext.ModelState[fullPropertyKey]; if (modelState == null || modelState.Errors.Count == 0) { if (OnPropertyValidating(controllerContext, bindingContext, propertyDescriptor, newPropertyValue)) { SetProperty(controllerContext, bindingContext, propertyDescriptor, newPropertyValue); OnPropertyValidated(controllerContext, bindingContext, propertyDescriptor, newPropertyValue); } } else { SetProperty(controllerContext, bindingContext, propertyDescriptor, newPropertyValue); // Convert FormatExceptions (type conversion failures) into InvalidValue messages foreach ( ModelError error in modelState.Errors.Where(err => String.IsNullOrEmpty(err.ErrorMessage) && err.Exception != null) .ToList()) { for (Exception exception = error.Exception; exception != null; exception = exception.InnerException) { if (exception is FormatException) { string displayName = propertyMetadata.GetDisplayName(); string errorMessageTemplate = "The value '{0}' is not valid for {1}."; string errorMessage = String.Format(CultureInfo.CurrentCulture, errorMessageTemplate, modelState.Value.AttemptedValue, displayName); modelState.Errors.Remove(error); modelState.Errors.Add(errorMessage); break; } } } } } } }

4，建立一个VModel的基类，为该基类添加Attribute，然后在Global中添加Model和Binder的映射。

[ModelBinder(typeof (JsonNetModelBinder))] VEntity { Id { get; set; } }

Global.asax中Application_Start添加代码：

ModelBinders.Binders.Add(typeof(VEntity), new JsonNetModelBinder());