Question

由于是Web API的新手，我发现将json List发布到Web API时遇到了一些困难。

Json
[  
   {  
      "ItemId":20,
      "RegId":"VISIT0001778",
      "BLoadDetailId":"8/31/2018 12:28:10 PM",
      "OrderReferenceNo":null,
      "StartTime":"0001-01-01T00:00:00",
      "InvalidItemMsg":"",
      "InvalidItemstatus":false,
      "BLoadingBay":"Chute 009",
      "BLoadingBayCode":null,
      "BLoadingBayID":7,
      "RFID":7123,
      "GangId":2,
      "BOrderTransfer":false,
      "BLoadedBags":0.0,
      "BRemainingBags":0.0,
      "BConversionValue":null,
      "WHid":2
   }
]

class：

 public class clsStartTimeUpdate
 {
     public int ItemId { get; set; }
     public string RegId { get; set; }
     public string BLoadDetailId { get; set; }
     public string OrderReferenceNo{ get; set; }
     public DateTime StartTime { get; set; }
     public string InvalidItemMsg { get; set; }
     public bool InvalidItemstatus { get; set; }
     public string BLoadingBay { get; set; }
     public string BLoadingBayCode { get; set; }
     public int? BLoadingBayID { get; set; }
     public long? RFID { get; set; }
     public int? GangId { get; set; }
     public bool BOrderTransfer { get; set; }
     public decimal BLoadedBags { get; set; }
     public decimal BRemainingBags { get; set; }
     public string BConversionValue { get; set; }
     public int? WHid { get; set; }
 }

Json请求

http://localhost:49290/api/config/Post?StartTimeDetails=[enter image description here][1][{%22ItemId%22:20,%22RegId%22:%22VISIT0001778%22,%22BLoadDetailId%22:%228/31/2018%2012:28:10%20PM%22,%22OrderReferenceNo%22:null,%22StartTime%22:%222001-01-01T00:00:00%22,%22InvalidItemMsg%22:%22%22,%22InvalidItemstatus%22:false,%22BLoadingBay%22:%22Chute%20009%22,%22BLoadingBayCode%22:null,%22BLoadingBayID%22:7,%22RFID%22:7123,%22GangId%22:2,%22BOrderTransfer%22:false,%22BLoadedBags%22:0.0,%22BRemainingBags%22:0.0,%22BConversionValue%22:null,%22WHid%22:2}]

方法WebAPI

[HttpPost]
public HttpResponseMessage Post([FromUri]List<clsStartTimeUpdate> StartTimeDetails)
{          
    return base.BuildSuccessResult(HttpStatusCode.OK, StartTimeDetails);
}

结果：

[{"ItemId":0,"RegId":null,"BLoadDetailId":null,"OrderReferenceNo":null,"StartTime":"0001-01-01T00:00:00","InvalidItemMsg":null,"InvalidItemstatus":false,"BLoadingBay":null,"BLoadingBayCode":null,"BLoadingBayID":null,"RFID":null,"GangId":null,"BOrderTransfer":false,"BLoadedBags":0.0,"BRemainingBags":0.0,"BConversionValue":null,"WHid":null}]

返回结果不会像Json中那样分配值。也许这是一个简单的情况，但是我非常感谢您的帮助。

Answer 1

对于复杂类型，请始终在参数中使用[FromBody]。

[HttpPost]
public HttpResponseMessage Post([FromBody]List<clsStartTimeUpdate> StartTimeDetails)
{          
    return base.BuildSuccessResult(HttpStatusCode.OK, StartTimeDetails);

}

然后在“正文”中指定查询对象。

注意：要在正文中指定值，您将需要一个API客户端，例如Postman或Swagger。 https://www.getpostman.com/

在邮递员中，

选择发布方法并指定URL，然后转到“正文”标签并选择原始。指定JSON作为类型。在正文中粘贴您的数据。

   { [
     {
        "ItemId":20,
        ..........
     }
    ]}

@ershoaib的其他答案是OP所面临问题的真正解决方案。但是，我将保留此答案，因为这是应该遵循的标准。

Answer 2

您似乎希望通过HttpGet而不是HttpPost来传递json，然后可以按照以下说明进行操作，

1）使用HttpGet发送Json

方法： Get

网址： http://localhost:49290/api/config/MyGet?StartTimeDetails=[{%22ItemId%22:20,%22RegId%22:%22VISIT0001778%22,%22BLoadDetailId%22:%228/31/2018%2012:28:10%20PM%22,%22OrderReferenceNo%22:null,%22StartTime%22:%220001-01-01T00:00:00%22,%22InvalidItemMsg%22:%22%22,%22InvalidItemstatus%22:false,%22BLoadingBay%22:%22Chute%20009%22,%22BLoadingBayCode%22:null,%22BLoadingBayID%22:7,%22RFID%22:7123,%22GangId%22:2,%22BOrderTransfer%22:false,%22BLoadedBags%22:0.0,%22BRemainingBags%22:0.0,%22BConversionValue%22:null,%22WHid%22:2}]

网络Api方法：

[HttpGet]
public HttpResponseMessage MyGet(string StartTimeDetails)
{
    List<clsStartTimeUpdate> clsStartTimeUpdates = JsonConvert.DeserializeObject<List<clsStartTimeUpdate>>(StartTimeDetails);
    return base.BuildSuccessResult(HttpStatusCode.OK, StartTimeDetails);
}

注意：在查询字符串中发送巨大的json是一种不好的做法，因此请改用HttpPost

2）使用HttpPost发送Json

方法：Post

网址： http://localhost:49290/api/config/MyPost

数据：

[  
   {  
      "ItemId":20,
      "RegId":"VISIT0001778",
      "BLoadDetailId":"8/31/2018 12:28:10 PM",
      "OrderReferenceNo":null,
      "StartTime":"0001-01-01T00:00:00",
      "InvalidItemMsg":"",
      "InvalidItemstatus":false,
      "BLoadingBay":"Chute 009",
      "BLoadingBayCode":null,
      "BLoadingBayID":7,
      "RFID":7123,
      "GangId":2,
      "BOrderTransfer":false,
      "BLoadedBags":0.0,
      "BRemainingBags":0.0,
      "BConversionValue":null,
      "WHid":2
   }
]

网络Api方法：

[HttpPost]
public HttpResponseMessage MyPost([FromBody]List<clsStartTimeUpdate> StartTimeDetails)
{
    return base.BuildSuccessResult(HttpStatusCode.OK, StartTimeDetails);
}

Answer 3

由于您正在使用post，因此应该期望controller方法中的数据来自主体。请参阅相关问题here

Json值未分配给列表[HttpPost]

3 个答案: