使用MultipartFormDataStreamProvider和ReadAsMultipartAsync

问题描述

我将如何去在使用 MultipartFormDataStreamProvider 和 Request.Content.ReadAsMultipartAsync ApiController ？

How would i go about using MultipartFormDataStreamProvider and Request.Content.ReadAsMultipartAsync in a ApiController?

我用Google搜索了一些教程，但我不能得到其中的任何工作，使用.NET 4.5 IM。

I have googled a few tutorial but i can't get any of them to work, im using .net 4.5.

这是我目前得到了：

public class TestController : ApiController
{
    const string StoragePath = @"T:\WebApiTest";
    public async void Post()
    {
        if (Request.Content.IsMimeMultipartContent())
        {
            var streamProvider = new MultipartFormDataStreamProvider(Path.Combine(StoragePath, "Upload"));
            await Request.Content.ReadAsMultipartAsync(streamProvider);
            foreach (MultipartFileData fileData in streamProvider.FileData)
            {
                if (string.IsNullOrEmpty(fileData.Headers.ContentDisposition.FileName))
                {
                    throw new HttpResponseException(Request.CreateResponse(HttpStatusCode.NotAcceptable, "This request is not properly formatted"));
                }
                string fileName = fileData.Headers.ContentDisposition.FileName;
                if (fileName.StartsWith("\"") && fileName.EndsWith("\""))
                {
                    fileName = fileName.Trim('"');
                }
                if (fileName.Contains(@"/") || fileName.Contains(@"\"))
                {
                    fileName = Path.GetFileName(fileName);
                }
                File.Copy(fileData.LocalFileName, Path.Combine(StoragePath, fileName));
            }
        }
        else
        {
            throw new HttpResponseException(Request.CreateResponse(HttpStatusCode.NotAcceptable, "This request is not properly formatted"));
        }
    }
}

我得到的异常

意外结束。 MIME多消息不是
  完整的。

在等待任务; 运行。
没有任何一个有任何想法我做错了，或者使用网络API有一个正常的asp.net项目工作的例子。

when the await task; runs.Does any one have any idea what i am doing wrong or have a working example in a normal asp.net project using web api.

推荐答案

我解决了这个错误，我不明白这与多部分流的末尾做的，但这里的工作code：

I resolved the error, i don't understand what this has to do with end of multipart stream but here is the working code:

public class TestController : ApiController
{
    const string StoragePath = @"T:\WebApiTest";
    public async Task<HttpResponseMessage> Post()
    {
        if (Request.Content.IsMimeMultipartContent())
        {
            var streamProvider = new MultipartFormDataStreamProvider(Path.Combine(StoragePath, "Upload"));
            await Request.Content.ReadAsMultipartAsync(streamProvider);
            foreach (MultipartFileData fileData in streamProvider.FileData)
            {
                if (string.IsNullOrEmpty(fileData.Headers.ContentDisposition.FileName))
                {
                    return Request.CreateResponse(HttpStatusCode.NotAcceptable, "This request is not properly formatted");
                }
                string fileName = fileData.Headers.ContentDisposition.FileName;
                if (fileName.StartsWith("\"") && fileName.EndsWith("\""))
                {
                    fileName = fileName.Trim('"');
                }
                if (fileName.Contains(@"/") || fileName.Contains(@"\"))
                {
                    fileName = Path.GetFileName(fileName);
                }
                File.Move(fileData.LocalFileName, Path.Combine(StoragePath, fileName));
            }
            return Request.CreateResponse(HttpStatusCode.OK);
        }
        else
        {
            return Request.CreateResponse(HttpStatusCode.NotAcceptable, "This request is not properly formatted");
        }
    }
}

这篇关于使用MultipartFormDataStreamProvider和ReadAsMultipartAsync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！