如何在JSON响应ASP.NET Core中关闭或处理camelCasing？ [英] How to turn off or handle camelCasing in JSON response ASP.NET Core?

问题描述

我正在通过ASP.NET Core / Web API / Angular 2上的WintellectNOW课程进行学习。我已经实现了API部分，但是由于某种原因，返回的JSON的变量名都被小写了。

I'm running through a WintellectNOW course on ASP.NET Core/Web API/Angular 2. I have the API portion implemented, but for whatever reason, the JSON that is being returned has the variable names being lowercased.

返回的JSON格式如下...

The returned JSON is formatted like...

[
 {"id":1,"name":"Bowler","color":"black","count":1},
 {"id":2,"name":"Fedora","color":"red","count":1},
 {"id":3,"name":"Baseball Cap","color":"blue","count":3}
]

我希望...

[
 {"Id":1,"Name":"Bowler","Color":"black","Count":1},
 {"Id":2,"Name":"Fedora","Color":"red","Count":1},
 {"Id":3,"Name":"Baseball Cap","Color":"blue","Count":3}
]

基于...的C＃模型。

Based on the C# model of...

namespace HatCollection.Models
{
    public class Hat
    {
        public int Id { get; set; }
        public string Name { get; set; }
        public string Color { get; set; }
        public int Count { get; set; }
    }
}

我甚至还用 [DataMember（Name = Id）] 只是为了确保它仍然没有关系。

I even went as far as decorating the properties with [DataMember(Name = "Id")] just to make sure and it still didn't matter.

在偶然的机会上，它与控制器中的Action和instance变量有关...

On the off chance, it's relevant the Action and instance variable in the controller...

private static readonly List<Hat> MyHats = new List<Hat>
{
    new Hat {Id = 1, Name = "Bowler", Color = "black", Count = 1 },
    new Hat {Id = 2, Name = "Fedora", Color = "red", Count = 1 },
    new Hat {Id = 3, Name = "Baseball Cap", Color = "blue", Count = 3 }
};

[HttpGet]
public IEnumerable<Hat> Get()
{
    return MyHats;
}

如何关闭camelCase功能，以便ASP.NET Core返回

How do I turn off the camelCase functionality, so that ASP.NET Core returns the property names without changing them?

推荐答案

在ASP.NET Core< 3.0中，默认情况下驼峰JSON属性（按< a href = https://github.com/aspnet/Announcements/issues/194 rel = nofollow noreferrer>此公告）。

In ASP.NET Core <3.0, JSON properties are camelCased by default (per this announcement).

您可以通过替换

services.AddMvc();

有

services
    .AddMvc()
    .AddJsonOptions(opt => opt.SerializerSettings.ContractResolver
        = new DefaultContractResolver());

在Startup.cs文件中。您必须使用Newtonsoft.Json.Serialization添加； 到文件顶部。

in your Startup.cs file. You'll have to add using Newtonsoft.Json.Serialization; to the top of the file.

DefaultContractResolver 到位，属性名称将在JSON输出中逐字表示。不需要 DataMember 属性。

With the DefaultContractResolver in place, the property names will be represented verbatim in the JSON output. No need for DataMember attributes.

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