FromHeader Asp.NET Core绑定到默认值 [英] FromHeader Asp.NET Core binding to default value

问题描述

我正在使用以下基本控制器测试Asp.Net核心WebApi：

I'm testing Asp.Net core WebApi with the following basic controller:

[Route("test")]
public class TestController
{
    [Route("mult")]
    [HttpGet]
    public int Multiply(int x, int y)
    {
        return x * y;
    }
}

然后，在Fiddler中，我发送以下请求：

Then, in Fiddler, I send the following request:

由于某种原因，响应在输入方法时，Booth x 和 y 被绑定为默认整数值。

And, for some reason, the response is 0. Booth x and y are binded to the default integer value when entering the method.

我也试过

[Route("test")]
public class TestController
{
    [Route("mult")]
    [HttpGet]
    public int Multiply([FromHeader]int x, [FromHeader]int y)
    {
        return x * y;
    }
}

但结果是一样的。我做错了什么？

But the result is the same. What I'm doing wrong?

推荐答案

表单标题接受 string not not int 所以你的代码应该是

form headers accept string not int so your code should be

[Route("test")]
public class TestController
{
        [Route("mult")]
        [HttpGet]
        public int Multiply([FromHeader]string x, [FromHeader]string y)
        {

            return Int32.Parse(x) * Int32.Parse(y);
        }
}

你必须得到 x 和 y 在字符串中并将其转换为 int

you have to get values of x and y in string and convert it to int

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