如何将文件从邮递员上传到控制器

Question

我已经阅读了很多 post 和文章，但仍然不知道为什么我的请求失败了。有一个 asp net core 3.1 应用程序。简单控制器代码：

[Route("api/v1/user")]
public class BlobController : Controller
{
    [HttpPost("uploadphoto")]
    public async Task<UploadPhotoResponse> UploadPhoto([FromForm] IFormFile file)
    {
        return null;
    }
}

邮递员请求：

Headers :

每次我收到 400 错误请求 结果并且无法进入 UploadPhoto 方法。

Answer 1

将 IFormFile 更改为 UploadPhotoRequest --> 多部分文件

using System;
using Microsoft.AspNetCore.Http;
using Microsoft.AspNetCore.Mvc;

namespace UploadPhoto.Controllers
{

    public class UploadPhotoRequest
    {
        public IFormFile File { get; set; }
        public string Name { get; set; }

        public string FileName { get; set; }
    }

    [ApiController]
    [Route("api/v1/user")]
    public class WeatherForecastController : ControllerBase
    {


        [HttpPost("uploadphoto")]
        public string UploadPhoto([FromForm] UploadPhotoRequest file)
        {
            Console.WriteLine(file.Name);
            return file.Name;

        }
    }
}

邮递员合集验证

{"auth":null,"event":null,"info":{"_postman_id":null,"description":null,"name":"test.http","schema":"https://schema.getpostman.com/json/collection/v2.1.0/collection.json","version":null},"item":[{"description":null,"event":null,"id":null,"name":"1","protocolProfileBehavior":null,"request":{"auth":null,"body":{"disabled":null,"file":null,"formdata":[{"contentType":"application/json","description":null,"disabled":null,"key":"image","type":"file","value":"settings.json","src":null},{"contentType":null,"description":null,"disabled":null,"key":"name","type":"text","value":"ram","src":null}],"graphql":null,"mode":"formdata","options":null,"raw":null,"urlencoded":null},"certificate":null,"description":"1","header":null,"method":"POST","proxy":null,"url":"https://localhost:5001/api/v1/user/uploadphoto"},"response":null,"variable":null,"auth":null,"item":null}],"protocolProfileBehavior":null,"variable":null}

上传文件有两种方式。

1. 通过单个文件上传
2. 通过多部分上传

This option is used, if there are multiple files/fields to upload

要上传单个文件，在 postman 中

1. 切换到正文标签
2. select二进制
3. select 文件

要上传多部分文件，在 postman 中

1. 切换到正文标签
2. select form-data
3. 添加键

if it is a file, hover to the right section of key. you will see option to change it to file.

备选方案

Dothttp 是类似的工具，可以很好地控制这些。

对于单个文件

POST https://req.dothttp.dev
// select as a binary
fileinput('C:\Users\john\documents\photo.jpg') // path to file

对于分段上传

POST https://req.dothttp.dev
// selects as multipart 
multipart(
    'name'< 'john',
    'photo'< 'C:\Users\john\documents\photo.jpg',
// and many more
)