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私はblueimp jqueryファイルのアップロードプラグインのサンプルをC＃でダウンロードしましたが、プログラムを実行しているときにエラーが発生していて、asp.netのblueimp jqueryファイルアップロードプラグインを使用した画像のアップロード
ご協力いただきますようお願い申し上げます。 ありがとうございます。ここで
は結果である：ここでは
は、ASPXコードである：ここで
<div id="fileupload">
<form action="Upload.ashx" method="POST" enctype="multipart/form-data">
<div class="fileupload-buttonbar">
<label class="fileinput-button">
<span>Add files...</span>
<input type="file" name="files[]" multiple="multiple" />
</label>
<%-- <button type="submit" class="start">Start upload</button>
<button type="reset" class="cancel">Cancel upload</button> --%>
<button type="button" class="delete">
Delete all files</button>
<div class="fileupload-progressbar">
</div>
</div>
</form>
<div class="fileupload-content">
<table class="files">
</table>
</div>
</div>
はUpload.ashxコードです：
using System;
using System.Collections.Generic;
using System.IO;
using System.Security.AccessControl;
using System.Web;
using System.Web.Script.Serialization;
namespace jQueryUploadTest {
public class Upload : IHttpHandler {
public class FilesStatus {
public string thumbnail_url { get; set; }
public string name { get; set; }
public string url { get; set; }
public int size { get; set; }
public string type { get; set; }
public string delete_url { get; set; }
public string delete_type { get; set; }
public string error { get; set; }
public string progress { get; set; }
}
private readonly JavaScriptSerializer js = new JavaScriptSerializer();
private string ingestPath;
public bool IsReusable { get { return false; } }
public void ProcessRequest (HttpContext context) {
var r = context.Response;
ingestPath = @"C:\temp\ingest\";
r.AddHeader("Pragma", "no-cache");
r.AddHeader("Cache-Control", "private, no-cache");
HandleMethod(context);
}
private void HandleMethod (HttpContext context) {
switch (context.Request.HttpMethod) {
case "HEAD":
case "GET":
ServeFile(context);
break;
case "POST":
UploadFile(context);
break;
case "DELETE":
DeleteFile(context);
break;
default:
context.Response.ClearHeaders();
context.Response.StatusCode = 405;
break;
}
}
private void DeleteFile (HttpContext context) {
var filePath = ingestPath + context.Request["f"];
if (File.Exists(filePath)) {
File.Delete(filePath);
}
}
private void UploadFile (HttpContext context) {
var statuses = new List<FilesStatus>();
var headers = context.Request.Headers;
if (string.IsNullOrEmpty(headers["X-File-Name"])) {
UploadWholeFile(context, statuses);
} else {
UploadPartialFile(headers["X-File-Name"], context, statuses);
}
WriteJsonIframeSafe(context, statuses);
}
private void UploadPartialFile (string fileName, HttpContext context, List<FilesStatus> statuses) {
if (context.Request.Files.Count != 1) throw new HttpRequestValidationException("Attempt to upload chunked file containing more than one fragment per request");
var inputStream = context.Request.Files[0].InputStream;
var fullName = ingestPath + Path.GetFileName(fileName);
using (var fs = new FileStream(fullName, FileMode.Append, FileAccess.Write)) {
var buffer = new byte[1024];
var l = inputStream.Read(buffer, 0, 1024);
while (l > 0) {
fs.Write(buffer,0,l);
l = inputStream.Read(buffer, 0, 1024);
}
fs.Flush();
fs.Close();
}
statuses.Add(new FilesStatus {
thumbnail_url = "Thumbnail.ashx?f=" + fileName,
url = "Upload.ashx?f=" + fileName,
name = fileName,
size = (int)(new FileInfo(fullName)).Length,
type = "image/png",
delete_url = "Upload.ashx?f=" + fileName,
delete_type = "DELETE",
progress = "1.0"
});
}
private void UploadWholeFile(HttpContext context, List<FilesStatus> statuses) {
for (int i = 0; i < context.Request.Files.Count; i++) {
var file = context.Request.Files[i];
file.SaveAs(ingestPath + Path.GetFileName(file.FileName));
var fname = Path.GetFileName(file.FileName);
statuses.Add(new FilesStatus
{
thumbnail_url = "Thumbnail.ashx?f=" + fname,
url = "Upload.ashx?f=" + fname,
name = fname,
size = file.ContentLength,
type = "image/png",
delete_url = "Upload.ashx?f=" + fname,
delete_type = "DELETE",
progress = "1.0"
});
}
}
private void WriteJsonIframeSafe(HttpContext context, List<FilesStatus> statuses) {
context.Response.AddHeader("Vary", "Accept");
try {
if (context.Request["HTTP_ACCEPT"].Contains("application/json")) {
context.Response.ContentType = "application/json";
} else {
context.Response.ContentType = "text/plain";
}
} catch {
context.Response.ContentType = "text/plain";
}
var jsonObj = js.Serialize(statuses.ToArray());
context.Response.Write(jsonObj);
}
private void ServeFile (HttpContext context) {
if (string.IsNullOrEmpty(context.Request["f"])) ListCurrentFiles(context);
else DeliverFile(context);
}
private void DeliverFile (HttpContext context) {
var filePath = ingestPath + context.Request["f"];
if (File.Exists(filePath)) {
context.Response.ContentType = "application/octet-stream";
context.Response.WriteFile(filePath);
context.Response.AddHeader("Content-Disposition", "attachment, filename=\"" + context.Request["f"] + "\"");
} else {
context.Response.StatusCode = 404;
}
}
private void ListCurrentFiles (HttpContext context) {
var files = new List<FilesStatus>();
var names = Directory.GetFiles(@"C:\temp\ingest", "*", SearchOption.TopDirectoryOnly);
foreach (var name in names) {
var f = new FileInfo(name);
files.Add(new FilesStatus
{
thumbnail_url = "Thumbnail.ashx?f=" + f.Name,
url = "Upload.ashx?f=" + f.Name,
name = f.Name,
size = (int)f.Length,
type = "image/png",
delete_url = "Upload.ashx?f=" + f.Name,
delete_type = "DELETE"
});
}
context.Response.AddHeader("Content-Disposition", "inline, filename=\"files.json\"");
var jsonObj = js.Serialize(files.ToArray());
context.Response.Write(jsonObj);
context.Response.ContentType = "application/json";
}
}
}