C＃中的RESTFUL WEB服务

Question

我正在C＃中建立一个安息的Web服务。

所以我已经构建了这样的DTO模型：

namespace WebService.Models
{
    [DataContract(Name = "VitalSigns")]
    public class VitalSignsDTO
    {
        [DataMember(Name = "id", Order = 1)]
        public int id { get; set; }
        [DataMember(Name = "name", Order = 2)]
        public string name { get; set; }
        [DataMember(Name = "valore", Order = 3)]
        public string valore { get; set; }
        [DataMember(Name = "dataOra", Order = 3)]
        public DateTime? dataOra { get; set; }
    }
}

现在，这是JSON的响应：

{
    "id": 1,
    "name": "Altezza corporea",
    "valore": null,
    "dataOra": null
},
{
    "id": 2,
    "name": "Peso corporeo",
    "valore": null,
    "dataOra": null
}

现在，我想知道，如果可以使用没有值的隐藏的Valore和Dataora字段。

Answer 1

使用 [JsonIgnore]属性。

namespace WebService.Models
{
    [DataContract(Name = "VitalSigns")]
    public class VitalSignsDTO
    {
        [DataMember(Name = "id", Order = 1)]
        public int id { get; set; }
        [DataMember(Name = "name", Order = 2)]
        public string name { get; set; }
        [JsonIgnore]
        [DataMember(Name = "valore", Order = 3)]
        public string valore { get; set; }
        [JsonIgnore]
        [DataMember(Name = "dataOra", Order = 3)]
        public DateTime? dataOra { get; set; }
    }
}

Answer 2

如果您在 .net core webapi 中，则可以在中间件中配置JSON Serializer(startup.cs(。

   public void ConfigureServices(IServiceCollection services)
    {
        services.AddMvc()
                .AddJsonOptions(options => { options.SerializerSettings.NullValueHandling = NullValueHandling.Ignore; });
        services.AddAutoMapper();
        services.RegisterServices();
    }

如果您在 ASP.NET WebApi 中，请在ASP.NET Web API上使用null值抑制属性