C# Web API 2-错误：“1”；未找到与名为'；调整大小'&引用；

我正试图用WebAPI做一个简单的文件上传API

这是控制器：

[RoutePrefix("api/resize")]
public class ResizeController : ApiController
{

    [HttpPost, Route("api/resize/preserveAspectRatio")]
    public async Task<IHttpActionResult> resizePreserveAspectRatio()
    {
        if (!Request.Content.IsMimeMultipartContent())
            throw new HttpResponseException(HttpStatusCode.UnsupportedMediaType);

        int maxWidth = 100;
        int maxHeight = 100;

        var provider = new MultipartMemoryStreamProvider();
        await Request.Content.ReadAsMultipartAsync(provider);
        foreach (var file in provider.Contents)
        {
            var filename = file.Headers.ContentDisposition.FileName.Trim('\"');
            var buffer = await file.ReadAsByteArrayAsync();
            //Do whatever you want with filename and its binaray data.


        }

        return Ok();
    }


}

当我与邮递员一起发布文件时，出现以下错误：

{
    "Message": "No HTTP resource was found that matches the request URI 'http://localhost:26303/api/resize/preserveAspectRatio'.",
    "MessageDetail": "No type was found that matches the controller named 'resize'."
}

---

这不是重复-无法找到另一篇文章来解决此特定组合。

正如您所料，这是一个路由问题。注释已确定您与路由和路由前缀属性存在冲突，从而导致以下路由

api/resize/api/resize/preserveAspectRatio

正在映射到您的操作

要获得所需的路由，您可以从控制器本身删除前缀

//removed prefix
public class ResizeController : ApiController {
    //Matches POST api/resize/preserveAspectRatio
    [HttpPost, Route("api/resize/preserveAspectRatio")]
    public async Task<IHttpActionResult> resizePreserveAspectRatio() {
        //...removed for brevity
    }
}

---

Reference

您的路由前缀已经显示“api/resize/”，那么在控制器路由中，您无需再次提及它。只需将“PreserveSpectratio”保留为@PM即可。提到，您当前的路由是

api/resize/api/resize/preserveSpectratio

，谢谢-嗯，我刚刚将路由更改为

preserveSpectratio

，前缀路由更改为

api/resize

，它仍然给出相同的错误。有什么想法吗@PM@zaitsmanThanks@Nkosi-刚刚尝试了你的第三个选项，

[RoutePrefix（“api/resize”）]

和

[HttpPost，Route（“~/api/resize/preserveAspectRatio”）]

，我得到了同样的错误。有什么想法吗？@Abr尝试第二种选择，看看是否有帮助。可能是覆盖与前缀相同的冲突。Hmm也尝试了@Nkosi、

[RoutePrefix（“api/resize”）]

和

[HttpPost，Route（“preserveAspectRatio”）]

并且得到了相同的错误，

“MessageDetail”：“未找到与名为“resize”的控制器匹配的类型。”

@Abr基于您所展示的内容和建议的解决方案。这应该行得通。除非你没有向我们展示导致冲突的其他东西。这个项目好坏参半。MVC和WebAPI？@Abr为了测试这一理论，创建了另一个简单的路径，一个GET，看看你是否能找到它。

//removed prefix
public class ResizeController : ApiController {
    //Matches POST api/resize/preserveAspectRatio
    [HttpPost, Route("api/resize/preserveAspectRatio")]
    public async Task<IHttpActionResult> resizePreserveAspectRatio() {
        //...removed for brevity
    }
}

[RoutePrefix("api/resize")]
public class ResizeController : ApiController {
    //Matches POST api/resize/preserveAspectRatio
    [HttpPost, Route("preserveAspectRatio")]
    public async Task<IHttpActionResult> resizePreserveAspectRatio() {
        //...removed for brevity
    }
}

[RoutePrefix("api/resize")]
public class ResizeController : ApiController {
    //Matches POST api/resize/preserveAspectRatio
    [HttpPost, Route("~/api/resize/preserveAspectRatio")]
    public async Task<IHttpActionResult> resizePreserveAspectRatio() {
        //...removed for brevity
    }
}