如何发布文件到ASP.NET网页API 2

问题描述

我想一个文件发布到我的WebAPI。这不是问题，但：

I'd like to post a file to my webapi. It's not the problem but:

1. 我不想使用JavaScript


2. 文件必须接收并保存的同步



3. 我想我的行动看起来像这样：

1. I don't want to use javascript
2. The file must be received and saved synchronously

3. I would like my action to look like this:

public void Post(byte[] file)
{

}

或

public void Post(Stream stream)
{

}

我要发布从code similiar文件本（当然，现在它不工作）：

I want to post file from code similiar to this (of course, now it doesn't work):

<form id="postFile" enctype="multipart/form-data" method="post">

    <input type="file" name="file" />

    <button value="post" type="submit" form="postFile"  formmethod="post" formaction="<%= Url.RouteUrl("WebApi", new { @httpRoute = "" }) %>" />

</form>

任何建议将AP preciated

Any suggestions will be appreciated

推荐答案

最简单的例子是这样的。

The simplest example would be something like this

[HttpPost]
[Route("")]
public async Task<HttpResponseMessage> Post()
{
    if (!Request.Content.IsMimeMultipartContent())
        throw new HttpResponseException(HttpStatusCode.UnsupportedMediaType);

    var provider = new MultipartFormDataStreamProvider(HostingEnvironment.MapPath("~/App_Data"));

    var files = await Request.Content.ReadAsMultipartAsync(provider);

    // Do something with the files if required, like saving in the DB the paths or whatever
    await DoStuff(files);

    return Request.CreateResponse(HttpStatusCode.OK);;
}

有 ReadAsMultipartAsync 不同步的版本，所以你最好一起演奏。

There is no synchronous version of ReadAsMultipartAsync so you are better off playing along.

更新：

如果您使用的是IIS服务器托管，你可以尝试用传统方式：

If you are using IIS server hosting, you can try the traditional way:

public HttpResponseMessage Post()
{
    var httpRequest = HttpContext.Current.Request;
    if (httpRequest.Files.Count > 0)
    {
        foreach (string fileName in httpRequest.Files.Keys)
        {
            var file = httpRequest.Files[fileName];
            var filePath = HttpContext.Current.Server.MapPath("~/" + file.FileName);
            file.SaveAs(filePath);
        }

        return Request.CreateResponse(HttpStatusCode.Created);
    }

    return Request.CreateResponse(HttpStatusCode.BadRequest);
}

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