如何将 IFormFile 保存到磁盘？

Question

我正在尝试使用 this piece of code 在磁盘上保存文件。

IHostingEnvironment _hostingEnvironment;
public ProfileController(IHostingEnvironment hostingEnvironment)
{
   _hostingEnvironment = hostingEnvironment;
}

[HttpPost]
public async Task<IActionResult> Upload(IList<IFormFile> files)
{
    foreach (var file in files)
    {
        var fileName = ContentDispositionHeaderValue
            .Parse(file.ContentDisposition)
            .FileName
            .Trim('"');

        var filePath = _hostingEnvironment.WebRootPath + "\wwwroot\" + fileName;
        await file.SaveAsAsync(filePath);
    }
    return View();
}

我能够将 IApplicationEnvironment 替换为 IHostingEnvironment，将 ApplicationBasePath 替换为 WebRootPath.

IFormFile 似乎不再有 SaveAsAsync()。那么如何将文件保存到磁盘？

Answer 1

自 core 发布候选版本以来，发生了一些变化

public class ProfileController : Controller {
    private IWebHostEnvironment _hostingEnvironment;

    public ProfileController(IWebHostEnvironment environment) {
        _hostingEnvironment = environment;
    }

    [HttpPost]
    public async Task<IActionResult> Upload(IList<IFormFile> files) {
        string uploads = Path.Combine(_hostingEnvironment.WebRootPath, "uploads");
        foreach (IFormFile file in files) {
            if (file.Length > 0) {
                string filePath = Path.Combine(uploads, file.FileName);
                using (Stream fileStream = new FileStream(filePath, FileMode.Create)) {
                    await file.CopyToAsync(fileStream);
                }
            }
        }
        return View();
    }
}

Answer 2

Core 3.0 中会有进一步的变化，因为 IHostingEnvironment 现在被标记为已过时。

using Microsoft.Extensions.Hosting;

public class ProfileController  : Controller
{
    private IHostEnvironment _hostingEnvironment;

    public ProfileController(IHostEnvironment environment)
    {
        _hostingEnvironment = environment;
    }

如何将 IFormFile 保存到磁盘？

How to save IFormFile to disk?

c#

asp.net-core-1.0