我正在尝试使用System.Net.Http.HttpClient上传多个文件。
using (var content = new MultipartFormDataContent())
{
content.Add(new StreamContent(imageStream), "image", "image.jpg");
content.Add(new StreamContent(signatureStream), "signature", "image.jpg.sig");
var response = await httpClient.PostAsync(_profileImageUploadUri, content);
response.EnsureSuccessStatusCode();
}
这只会发送多部分/表单数据,但我希望多部分/混合在帖子的某个地方。
更新:好的,我解决了。
using (var content = new MultipartFormDataContent())
{
var mixed = new MultipartContent("mixed")
{
CreateFileContent(imageStream, "image.jpg", "image/jpeg"),
CreateFileContent(signatureStream, "image.jpg.sig", "application/octet-stream")
};
content.Add(mixed, "files");
var response = await httpClient.PostAsync(_profileImageUploadUri, content);
response.EnsureSuccessStatusCode();
}
private StreamContent CreateFileContent(Stream stream, string fileName, string contentType)
{
var fileContent = new StreamContent(stream);
fileContent.Headers.ContentDisposition = new ContentDispositionHeaderValue("file") {FileName = fileName};
fileContent.Headers.ContentType = new MediaTypeHeaderValue(contentType);
return fileContent;
}
这在钢丝鲨上看起来是正确的。但我看不到控制器中的文件。
[HttpPost]
public ActionResult UploadProfileImage(IEnumerable<HttpPostedFileBase> postedFiles)
{
if(postedFiles == null)
return new HttpStatusCodeResult(HttpStatusCode.BadRequest);
// more code here
}
postedFiles
仍然为空。有任何想法吗?