从Htt的prequestMessage下载zip文件：控制器 [英] Downloading zip file from HttpRequestMessage : controller

问题描述

我工作的一个Web API的使用ASP.NET MVC的其中的下载在 zip文件附加在的Htt prequestMessage

I'm working on a web api's using ASP.NET MVC's which download the zip file attached in the HttpRequestMessage

如下

 var task = this.Request.Content.ReadAsStreamAsync();
            task.Wait();

            if (this.Request.Content.IsMimeMultipartContent())
            {

                using (Stream requestStream = task.Result)
                {
                     // Do not know how to copy the above request to file stream or zip (ionic zip) and generate zip file from it
                 }
            }

请注意：

1）

using (var fileStream = File.Create("name.zip"))
                        {
                            requestStream.CopyTo(fileStream);
                        }

创建无效的拉链。

creates invalid zip..

2）邮编里面包含了很多的文件。

2) Zip contains many files inside it.

等待您的意见

更新1：

 var provider = new MultipartFormDataStreamProvider(ScriptPath);

                Request.Content.ReadAsMultipartAsync(provider);                

                foreach (MultipartFileData file in provider.FileData)
                {

                    Trace.Write(file.Headers.ContentDisposition.FileName);
                   Trace.Write("Server file path: " + ScriptPath);

                }

虽然并不能帮助我

though does not help me

推荐答案

这对我的作品。请把伪因为我没有编译。 <击>你也可能要返工阻塞。结果呼吁采取异步的优势阅读。

This works for me. Please treat as pseudo as I didn't compile it. Also you may want to rework the blocking .Result call to take advantage of the Async read.

var requestStream = await Request.Content.ReadAsMultipartAsync();

HttpContent fileContent = requestStream.Contents.SingleOrDefault(c => c.Headers.ContentType != null);

byte[] fileBytes = await fileContent.ReadAsByteArrayAsync();
using (FileStream fs = File.OpenWrite(outputPath))
{
    fs.Write(fileBytes, 0, (int)fileContent.Headers.ContentLength.Value);
}

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