Question

它位于.net核心WebAPI中，它不会在以下代码中读取$ type

// POST api/values
[HttpPost("Order")]
public string Order([FromBody] OrderRequest rq)
{
    var a = new OrderRequest 
    {
        Version = "12",
        Typea = new MsgType
        {
            A = new MsgTypeA
            {
                Item = new MsgSubTypeA
                {
                    SubA = "TEST"
                }
            }
        }
    };

    return JsonConvert.SerializeObject(a, Formatting.Indented, new JsonSerializerSettings
    {
        TypeNameHandling = TypeNameHandling.Auto//.All
    });
}

请求

{
   "Typea":    {
      "A": {"Item":       {
         "$type": "Services.WebReference.MsgSubTypeA, Services.WebReference",
         "SubA":"TEST"
         }
      }}
   }
}

它只是无法读取$ type，并且无法将“Item”转换为正确的类型，而是转换为其基类。但是，每个JsonConvert.SerializeObject生成的响应显示相同的JSON。

怎么了？

Answer 1

现在已经解决了

public string Order([FromBody] JObject rq)
{
    var obj = JsonConvert.DeserializeObject<OrderRequest>(rq.ToString(), new JsonSerializerSettings
    {
        TypeNameHandling = TypeNameHandling.Auto
    });

另一种方式可能更好：

services
    .AddMvc()
    .AddJsonOptions(options =>
    {
        options.SerializerSettings.TypeNameHandling = Newtonsoft.Json.TypeNameHandling.Auto;
    })

$ type in JSON请求在WebAPI中不起作用

1 个答案: