前端使用 ajax+fromData 方式上傳；
直接貼源碼：
前臺頁面：
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
<script src="https://code.jquery.com/jquery-3.2.1.min.js"></script>
<script>
function doUpload() {
var formData = new FormData($( "#uploadForm" )[0]);
$.ajax({
url: 'http://localhost:16516/api/Upload?guid=1234567890' ,
type: 'POST',
data: formData,
async: false,
cache: false,
contentType: false,
processData: false,
success: function (returndata) {
alert(returndata);
},
error: function (returndata) {
alert(returndata);
}
});
}
</script>
</head>
<body>
<form id= "uploadForm">
<p >指定文件名： <input type="text" name="filename" value= ""/></p >
<p >上傳文件： <input type="file" name="file"/></p>
<input type="button" value="上傳" onclick="doUpload()" />
</form>
</body>
</html> /// <summary>
/// 文件上傳
/// </summary>
/// <param name="guid">GUID由前端生成</param>
/// <returns></returns>
[HttpPost]
[Route("api/Upload")]
public async Task<string> Post(string guid)
{
if (!Request.Content.IsMimeMultipartContent())
{
throw new HttpResponseException(HttpStatusCode.UnsupportedMediaType);
}
string uploadFolderPath = HostingEnvironment.MapPath("~/Upload");
//如果路徑不存在，創建路徑
if (!Directory.Exists(uploadFolderPath))
Directory.CreateDirectory(uploadFolderPath);
List<string> files = new List<string>();
var provider = new WithExtensionMultipartFormDataStreamProvider(uploadFolderPath, guid);
try
{
// Read the form data.
await Request.Content.ReadAsMultipartAsync(provider);
// This illustrates how to get the file names.
foreach (var file in provider.FileData)
{//接收文件
files.Add(Path.GetFileName(file.LocalFileName));
}
}
catch
{
throw;
}
return string.Join(",", files);
}如需多文件上傳，GUID請後臺生成。
WithExtensionMultipartFormDataStreamProvider 文件說明：
public class WithExtensionMultipartFormDataStreamProvider : MultipartFormDataStreamProvider
{
public string guid { get; set; }
public WithExtensionMultipartFormDataStreamProvider(string rootPath,string guidStr)
: base(rootPath)
{
guid = guidStr;
}
public override string GetLocalFileName(System.Net.Http.Headers.HttpContentHeaders headers)
{
string extension = !string.IsNullOrWhiteSpace(headers.ContentDisposition.FileName) ? Path.GetExtension(GetValidFileName(headers.ContentDisposition.FileName)) : "";
return guid + extension;
}
private string GetValidFileName(string filePath)
{
char[] invalids = System.IO.Path.GetInvalidFileNameChars();
return String.Join("_", filePath.Split(invalids, StringSplitOptions.RemoveEmptyEntries)).TrimEnd('.');
}
}OK，測試成功！