如何從 ASP.NET MVC 控制器方法返回由 JSON.NET 序列化的 camelCase JSON？

我的問題是我希望通過來自 ASP.NET MVC 控制器方法的ActionResult返回 camelCased（而不是標準 PascalCase）JSON 數據，並由JSON.NET序列化。

例如，考慮以下 C# 類：

public class Person
{
   public string FirstName { get; set; }
   public string LastName { get; set; }
}

預設情況下，當從 MVC 控制器以 JSON 形式返回此類的實例時，它將以下列方式序列化：

{
 "FirstName": "Joe",
 "LastName": "Public"
}

我希望它被序列化（通過 JSON.NET）為：

{
 "firstName": "Joe",
 "lastName": "Public"
}

我該怎麼做呢？

我在 Mats Karlsson 的部落格上找到了一個很好的解決方案。解決方案是編寫一個 ActionResult 的子類，通過 JSON.NET 序列化數據，將後者配置為遵循 camelCase 約定：

public class JsonCamelCaseResult : ActionResult
{
   public JsonCamelCaseResult(object data, JsonRequestBehavior jsonRequestBehavior)
   {
       Data = data;
       JsonRequestBehavior = jsonRequestBehavior;
   }

   public Encoding ContentEncoding { get; set; }

   public string ContentType { get; set; }

   public object Data { get; set; }

   public JsonRequestBehavior JsonRequestBehavior { get; set; }

   public override void ExecuteResult(ControllerContext context)
   {
       if (context == null)
       {
           throw new ArgumentNullException("context");
       }
       if (JsonRequestBehavior == JsonRequestBehavior.DenyGet && String.Equals(context.HttpContext.Request.HttpMethod, "GET", StringComparison.OrdinalIgnoreCase))
       {
           throw new InvalidOperationException("This request has been blocked because sensitive information could be disclosed to third party web sites when this is used in a GET request. To allow GET requests, set JsonRequestBehavior to AllowGet.");
       }

       var response = context.HttpContext.Response;

       response.ContentType = !String.IsNullOrEmpty(ContentType) ? ContentType : "application/json";
       if (ContentEncoding != null)
       {
           response.ContentEncoding = ContentEncoding;
       }
       if (Data == null)
           return;

       var jsonSerializerSettings = new JsonSerializerSettings
       {
           ContractResolver = new CamelCasePropertyNamesContractResolver()
       };
       response.Write(JsonConvert.SerializeObject(Data, jsonSerializerSettings));
   }
}

然後在你的 MVC 控制器方法中使用這個類，如下所示：

public ActionResult GetPerson()
{
   return new JsonCamelCaseResult(new Person { FirstName = "Joe", LastName = "Public" }, JsonRequestBehavior.AllowGet)};
}

或者，簡單地說：

JsonConvert.SerializeObject(
   <YOUR OBJECT>, 
   new JsonSerializerSettings 
   { 
       ContractResolver = new CamelCasePropertyNamesContractResolver() 
   });

例如：

return new ContentResult
{
   ContentType = "application/json",
   Content = JsonConvert.SerializeObject(new { content = result, rows = dto }, new JsonSerializerSettings { ContractResolver = new CamelCasePropertyNamesContractResolver() }),
   ContentEncoding = Encoding.UTF8
};

引用自：https://stackoverflow.com/questions/19445730