将JSON对象映射到Azure Function API请求类参数中的类

Question

将JSON对象映射到类c#属性用例：我在Azure函数中创建API，并将参数ReservationDraftRequestDto传递到类，如下面的代码所示

[FunctionName("Function1")]公共静态异步任务运行([http trigger(authorization level。Function，" get "，" post "，Route = null)]ReservationDraftRequestDto ReservationDraftRequestDto，ILogger log) { }

DTO类：

API URI：http://localhost:7071/api/Function1JSON-for调用API是：{"SoftHoldIDs"： 444，"AppliedUsages": [ { "SoftHoldID"： 444，"UsageYearID"： 4343，"DaysAppled"： 0，"PointsAppled"： 1 } ], "访客"：[1,2]}

public class ReservationDraftRequestDto
{

    public int SoftHoldIDs { get; set; }
    public int[] Guests { get; set; }
    public AppliedUsage[] AppliedUsages { get; set; }

}


public class AppliedUsage
{
    public int SoftHoldID { get; set; }
    public int UsageYearID { get; set; }
    public int DaysApplied { get; set; }
    public int PointsApplied { get; set; }
}

问题是：当我使用上述有效负载调用API时，API类参数ReservationDraftRequestDto未映射到AppliedSages数组值。

请让我知道我需要做什么来映射API JSON有效负载到ReservationDraftRequestDto

Answer 1

这是设计使然。绑定逻辑显式排除数组，同时反序列化 json 正文内容。您可以参考这里。

如果你想获取对象，这里有一个简单的解决方法：

[FunctionName("Function1")]
public static async Task<IActionResult> Run(
    [HttpTrigger(AuthorizationLevel.Function, "get", "post", Route = null)]HttpRequest req,
    ILogger log)
{
    var reservationDraftRequestDto = req.DeserializeModel<ReservationDraftRequestDto>();

    var data = JsonConvert.SerializeObject(reservationDraftRequestDto);
    //more logic...
    return new OkResult();
}
public static T DeserializeModel<T>(this HttpRequest request)
{
    using (var reader = new StreamReader(request.Body))
    using (var textReader = new JsonTextReader(reader))
    {
        request.Body.Seek(0, SeekOrigin.Begin);
        var serializer = JsonSerializer.Create(new JsonSerializerSettings()
        {
            ContractResolver = new CamelCasePropertyNamesContractResolver()
        });
        return serializer.Deserialize<T>(textReader);
    }
}