如何在ASP.NET Core Web API中上传文件

问题描述

我正在尝试在Asp.net Core中实现文件上传.请在下面查看我的结局:

I am trying to implement a file upload in Asp.net Core. See my endpoit below:

    [HttpPost("upload")]
    [AllowAnonymous]
    public async Task<IActionResult> Post(List<IFormFile> files)
    {
        long size = files.Sum(f => f.Length);

        // full path to file in temp location
        var filePath = Path.GetTempFileName();

        foreach (var formFile in files)
        {
            if (formFile.Length > 0)
            {
                using (var stream = new FileStream(filePath, FileMode.Create))
                {
                    await formFile.CopyToAsync(stream);
                }
            }
        }


        return Ok(new { count = files.Count, size, filePath });
    }

当我使用Postman测试它时，即使选择任何文件，我也会得到以下结果:

When I test it using Postman I get the following result even if I select any file:

{
   "count": 0,
   "size": 0,
   "filePath": "/var/folders/24/rmgj9ypj37709tnhxr2hgtfr0000gn/T/tmpX0SwbF.tmp"
}

推荐答案

这应该指导您正确的方向.该方法正在接收jQuery post对象.

This should guide you in the right direction. The method is receiving a jQuery post object.

    [HttpPost]
    public async Task<IActionResult> ReadFileHeaders(IFormFile file)
    {
        if (file != null)
        {
            using (var stream = new MemoryStream())
            {
                await file.CopyToAsync(stream);
                // Now the file is loaded into the stream variable
            }
        }

        return BadRequest("File required");
    }

这篇关于如何在ASP.NET Core Web API中上传文件的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！