如何在JSON响应ASP.NET Core中关闭或处理camelCasing？

Question

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的变量名都是小写的。

返回的JSON格式如下：

[
 {"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}
]

我期待着…

[
 {"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

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; }
    }
}

我什至甚至[DataMember(Name = "Id")]只是为了确定装饰属性而已，仍然没有关系。

在偶然的机会上，它与控制器中的Action和instance变量有关。

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返回属性名称而不更改它们？

Answer 1

在ASP.NET Core
<3.0中，默认情况下（根据此声明）驼峰式存储JSON属性。

您可以通过替换来禁用此功能

services.AddMvc();

与

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

在您的Startup.cs文件中。您必须将其添加using Newtonsoft.Json.Serialization;到文件的顶部。

随着DefaultContractResolver到位，属性名称将在JSON输出表示一字不差。不需要DataMember属性。