Asp.net core Can'；t将对象列表发布到web api

我在这里做错了什么（我使用的是.net core 3.1）：

对象：

   public class Member
    {
        public int NUM {get;set;}
    }

行动后

     [HttpPost]
     public async Task<IActionResult> Post([FromBody] IEnumerable<Member> members)

{
    "type": "https://tools.ietf.org/html/rfc7231#section-6.5.1",
    "title": "One or more validation errors occurred.",
    "status": 400,
    "traceId": "|fc86d5d0-498dec466e59f3c5.",
    "errors": {
        "$": [
            "The JSON value could not be converted to System.Collections.Generic.IEnumerable`1[TRS.Gemini.MemberApi.Controllers.Member]. Path: $ | LineNumber: 0 | BytePositionInLine: 1."
        ]
    }
}

邮递员发来的错误

     [HttpPost]
     public async Task<IActionResult> Post([FromBody] IEnumerable<Member> members)

{
    "type": "https://tools.ietf.org/html/rfc7231#section-6.5.1",
    "title": "One or more validation errors occurred.",
    "status": 400,
    "traceId": "|fc86d5d0-498dec466e59f3c5.",
    "errors": {
        "$": [
            "The JSON value could not be converted to System.Collections.Generic.IEnumerable`1[TRS.Gemini.MemberApi.Controllers.Member]. Path: $ | LineNumber: 0 | BytePositionInLine: 1."
        ]
    }
}

---

我试着发布一个对象而不是一个集合，效果很好。当然，最后的对象要复杂得多，但我想从简单开始。

对于您定义的对象，有效的JSON输入应该是：

[
    {"NUM": 5},
    {"NUM": 4}
]

注意缺少{}括号

您指定的负载也是无效的JSON