Web Api HTTPPost不接受int [英] Web Api HTTPPost not accepting int

问题描述

我正在尝试传递正文一个 int ，它不起作用
为什么我需要创建一个具有int类型的属性的类吗？ （然后它就起作用了）

工作

  [HttpPost] 
 [Route（ api / UpdateMainReversed）] 
 public IHttpActionResult UpdateMainVerified（DataAccess.Entities.RequestMain mainValues）
 {....} 
  

不工作

  [HttpPost] 
 [Route（ api / UpdateMainReversed）] 
 public IHttpActionResult UpdateMainVerified（int mainId）
 {....} 
  

用邮递员进行测试

2.you应该使用下面的[FromBody]

  [HttpPost] 
 public void UpdateMainVerified（[FromBody] int mainid）
 {
 
} 
  

此链接可以很好地说明

https://docs.microsoft.com/zh-CN/aspnet/web-api/overview/formats-and-model-binding/parameter-binding-in- aspnet-web-api

I am trying to just pass in body a int and it does not work Why do I need to create a class with a property of type int ? (then it works)

WORKS

[HttpPost]
[Route("api/UpdateMainReversed")]
public IHttpActionResult UpdateMainVerified(DataAccess.Entities.RequestMain mainValues)
    {  ....}

DO NOT WORK

[HttpPost]
[Route("api/UpdateMainReversed")]
public IHttpActionResult UpdateMainVerified(int mainId)
    {  ....}

Testing with Postman

http://localhost:13497/api/UpdateMainReversed

Body

{
   "mainId" : 1615
}

解决方案

1.Your [HttpPost] expects a int but from body you are passing a json object. you should pass json string like below. No need to mention parameter name

2.you should use [FromBody] as below

[HttpPost]
    public void UpdateMainVerified([FromBody] int mainid)
    {

    }

this link explains it well

https://docs.microsoft.com/en-us/aspnet/web-api/overview/formats-and-model-binding/parameter-binding-in-aspnet-web-api

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