英文:
Addition operation with ASP.NET Core Web API
问题
我正在尝试使用ASP.NET Core Web API的POST方法进行加法运算，但n1和n2始终为零。
using Microsoft.AspNetCore.Mvc;
namespace WebApi.Controllers
{
[Route("api/[controller]")]
[ApiController]
public class ValuesController : ControllerBase
{
[HttpPost("sum")]
public ActionResult<int> sum([FromForm] ToplamaModel model)
{
int sonuc = model.n1 + model.n2;
return sonuc;
}
}
public class ToplamaModel
{
public int n1 { get; set; }
public int n2 { get; set; }
}
}
API链接：https://localhost:7070/api/values/sum
原始JSON消息：
{ "Sayi1": 5, "Sayi2": 3 }
我正在使用Postman进行测试。
我询问了Chat GPT，它说要将FromForm更改为FromBody，但这并没有起作用，而是返回以下错误：
"type": "https://tools.ietf.org/html/rfc7231#section-6.5.13",
"title": "Unsupported Media Type",
"status": 415,
"traceId": "00-005af8933c5749315192cbff0b3953e0-86195ee93a314294-00"
如果你需要进一步的帮助，请告诉我。
英文:
I am trying to make addition operation with ASP.NET Core Web API post method but n1 and n2 are always zero
using Microsoft.AspNetCore.Mvc;
namespace WebApi.Controllers
{
[Route("api/[controller]")]
[ApiController]
public class ValuesController : ControllerBase
{
[HttpPost("sum")]
public ActionResult<int> sum([FromForm] ToplamaModel model)
{
int sonuc = model.n1 + model.n2;
return sonuc;
}
}
public class ToplamaModel
{
public int n1 { get; set; }
public int n2 { get; set; }
}
}
API link: https://localhost:7070/api/values/sum
Raw json message:
{ "Sayi1": 5, "Sayi2": 3 }
I am using Postman to test
I asked chat gpt and its say change FromForm to FromBody but that didn't work and instead returns:
"type": "https://tools.ietf.org/html/rfc7231#section-6.5.13",
"title": "Unsupported Media Type",
"status": 415,
"traceId": "00-005af8933c5749315192cbff0b3953e0-86195ee93a314294-00"
答案1
得分: 1
你应该使用 [FromBody]，因为你的数据在请求体中，而不是表单中。
你收到了 "Unsupported Media Type" 错误，因为你可能在 Postman 的 "Headers" 选项卡中关闭了 "Content-Type" 标头。它应该被打开，并且值应为 "application/json"。
最后，你的 JSON 应该是：{"n1": 5, "n2": 3}，这样它才能正确反序列化为你的 ToplamaModel 对象。
英文:
You should use [FromBody] as your data are in body, not form.
You got "Unsupported Media Type" because you probably turned off the header "Content-Type" in "Headers" tab in Postman. It should be turned on and have a value of "application/json".
And finally, your json should be: {"n1": 5,"n2": 3}, so it can be deserialized properly to your ToplamaModel object.
答案2
得分: 0
我正在尝试使用ASP.NET Core Web API的POST方法进行加法操作，但n1和n2始终为零。
我已经使用您的示例进行了测试，使用[FromForm]，我得到了精确的输出。不确定您是如何从Postman发送请求的。但是，可以通过在这种情况下同时使用[FromForm]和[FromBody]来实现这一目标，请求模式会稍微变化。
[FromForm]：
我尝试了以下的[FromForm]方式：
输出：
[FromBody]：
[Route("api/[controller]")]
[ApiController]
public class ValuesController : ControllerBase
{
[HttpPost("sum")]
public ActionResult<int> sum([FromBody] ToplamaModel model)
{
int sonuc = model.n1 + model.n2;
return sonuc;
}
}
注意： 如果要使用FromBody，请将其替换为方法签名中的参数。其余语法将保持不变。
输出：
注意： 您可以参考此官方文档获取更多详细信息。
英文:
> I am trying to make addition operation with ASP.NET Core Web API post
> method but n1 and n2 are always zero
I have tested using your sample with [FromForm] and I am getting exact output. Its not sure how did you sent your request from postman. However, this can be achieved either using [FromForm] and [FromBody] in that scenario, request pattern would be changed a bit.
[FromForm] :
I have tried as following for [FromForm]:
Output:
[FromBody] :
<!-- language: c# -->
[Route("api/[controller]")]
[ApiController]
public class ValuesController : ControllerBase
{
[HttpPost("sum")]
public ActionResult<int> sum([FromBody] ToplamaModel model)
{
int sonuc = model.n1 + model.n2;
return sonuc;
}
}
Note: If you want to use FromBody use replace it within your method signature. Rest of the syntax would remain same.
Output:
Note: You can refer to this official document for more details.
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