在添加ApiController属性之前，ASP.NET Core 3.1无法处理Axios请求 [英] ASP.NET Core 3.1 cannot process Axios request until ApiController attribute is added

问题描述

我有以下问题.每当我向Api端点发送邮件时，ASP.NET Core 3.1都无法处理该请求.但是，当我添加 ApiController 属性时，它可以很好地工作.

I have the following issue. Whenever I send something to my Api endpoint, ASP.NET Core 3.1 is not able to process the request. However, when I add the ApiController attribute it works perfectly fine.

我的代码是正确的，但是仅当我添加此属性时有效.怎么样了?

My code is correct but only works when I add this attribute. How is that so?

供参考，这是我的代码

API

[ApiController] //Remove this and the code breaks
[Route("api/SomeApi")]
public class ApiController : Controller {

    private readonly IService service;

    public ApiController(IService service)
    {
        this.service = service;
    }

    [HttpPost]
    [Route("Add")]
    public SomeClass Add(SomeClass foo)
    {
        var userId = service.GetCurrentUserId(User);
        foo.Id = Guid.NewGuid();
        foo.UserId = userId;
        service.Add(foo);
        return foo;
    }
}

JS

axios.post('/api/SomeApi/Add', {
   foo: this.foo,

}).then(function (response: any) {
   this.Id = response.Id;
});

仅供参考，我在ApiController上还有其他使用GET/POST的方法.GET方法工作得很好，但是POST方法仅在我使用查询参数时有效.在这种情况下，我不使用查询参数，因为我要发送给Api的数据比示例中实际提供的要多.

FYI, I have other methods on my ApiController using GET/POST. The GET ones work perfectly fine but the POST methods only work when I use query parameters. In this case, I didn't use query parameters because I have more data to send to my Api than actually given in the example.

我已经尝试使用 [FromBody] 来获得回复.这没用.相反，我得到了空值. foo 甚至都没有实例化.

I've already tried to get my response using [FromBody]. It did not work. I instead got null. foo was not even instantiated.

推荐答案

对于将请求主体绑定到模型，有两种类型，一种是从表单数据进行绑定，另一种是 application/json .

For binding request body to model, there are two types, one is binding from form data and the other is application/json.

对于 Controller ，它将默认获取表单数据.对于 ApiController ，它将默认获取json数据.

For Controller,it would fetch the form data by default.For ApiController,it would fetch the json data by default.

如果要绑定请求正文而不使用 [ApiController] ，则可以添加 [FromBody] :

If you want bind request body without using [ApiController],you could add [FromBody]:

//[ApiController] 
[Route("api/SomeApi")]
public class ApiController : Controller
{
    private readonly IService service;
    public ApiController(IService service)
    {
        this.service = service;
    }

    [HttpPost]
    [Route("Add")]
    public SomeClass Add([FromBody]SomeClass foo)
    {
        //do your stuff...
    }
}

型号:

public class SomeClass 
{
    public int Id { get; set; }
    public string Name { get; set; }
}

查看:

@section Scripts{
<script src="https://unpkg.com/axios/dist/axios.min.js"></script>
<script>
    axios.post('/api/SomeApi/Add', {
        id: 1,
        name: 'sdfsdf'
    })
        .then(function (response) {
            console.log(response);
        })
        .catch(function (error) {
            console.log(error);
        });
</script>
}

结果:

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