Blueimp jQuery File Upload not compatible with ASP.NET Core 3.1

霸气de小男生 提交于 2021-02-19 06:06:32

问题


I am trying to integrate the Blueimp jQuery File upload in ASP.NET Core 3.1 but it has become incompatible with this version (3.1).

The reason why I am saying is because I have tested the same code with ASP.NET Core 2.0 where Blueimp works perfectly. The below are the 2 videos to prove this fact.

ASP.NET Core 2.0 which works perfectly

ASP.NET Core 3.1 which gives error

The Controller's code in ASP.NET Core 3.1

using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Threading.Tasks;
using Microsoft.AspNetCore.Hosting;
using Microsoft.AspNetCore.Http;
using Microsoft.AspNetCore.Mvc;
using jFileUpload.Models;
using Newtonsoft.Json;

namespace jFileUpload.Controllers
{
    public class HomeController : Controller
    {
        private IWebHostEnvironment hostingEnvironment;
        public HomeController(IWebHostEnvironment environment)
        {
            hostingEnvironment = environment;
        }

        public IActionResult Index()
        {
            return View();
        }

        public IActionResult Upload()
        {
            return View("Index");
        }

        [HttpPost]
        public async Task<JsonFiles> Upload(IFormFile files)
        {
            var resultList = new List<UploadFilesResult>();

            string path = Path.Combine(hostingEnvironment.WebRootPath, "uploads/" + files.FileName);
            using (var stream = new FileStream(path, FileMode.Create))
            {
                await files.CopyToAsync(stream);
            }

            UploadFilesResult uploadFiles = new UploadFilesResult();
            uploadFiles.name = files.FileName;
            uploadFiles.size = files.Length;
            uploadFiles.type = "image/jpeg";
            uploadFiles.url = "/uploads/" + files.FileName;
            uploadFiles.deleteUrl = "/Home/Delete?file=" + files.FileName;
            uploadFiles.thumbnailUrl = "/uploads/" + files.FileName;
            uploadFiles.deleteType = "GET";

            resultList.Add(uploadFiles);

            JsonFiles jFiles = new JsonFiles(resultList);
            string output = JsonConvert.SerializeObject(jFiles);
            return jFiles;
        }

        public JsonResult Delete(string file)
        {
            System.IO.File.Delete(Path.Combine(hostingEnvironment.WebRootPath, "uploads/" + file));
            return Json("OK");
        }
    }
}

In ASP.NET Core 2.0 the controllers code is slightly different on the Dependency Injection part which is given below, rest all is same.

private IHostingEnvironment hostingEnvironment;
public HomeController(IHostingEnvironment environment)
{
    hostingEnvironment = environment;
}

The Model classes

using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;

namespace jFileUpload.Models
{
    public class UploadFilesResult
    {
        public string name { get; set; }
        public long size { get; set; }
        public string type { get; set; }
        public string url { get; set; }
        public string deleteUrl { get; set; }
        public string thumbnailUrl { get; set; }
        public string deleteType { get; set; }
    }
}

using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;

namespace jFileUpload.Models
{
    public class JsonFiles
    {
        public UploadFilesResult[] files;
        public string TempFolder { get; set; }
        public JsonFiles(List<UploadFilesResult> filesList)
        {
            files = new UploadFilesResult[filesList.Count];
            for (int i = 0; i < filesList.Count; i++)
            {
                files[i] = filesList.ElementAt(i);
            }
        }
    }
}

The View code

@{
    Layout = null;
}

<!DOCTYPE html>
<!--
/*
 * jQuery File Upload Demo
 * https://github.com/blueimp/jQuery-File-Upload
 *
 * Copyright 2010, Sebastian Tschan
 * https://blueimp.net
 *
 * Licensed under the MIT license:
 * https://opensource.org/licenses/MIT
 */
-->
<html lang="en">
<head>
    <!-- Force latest IE rendering engine or ChromeFrame if installed -->
    <!--[if IE]>
      <meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1" />
    <![endif]-->
    <meta charset="utf-8" />
    <title>jQuery File Upload Demo</title>
    <meta name="description"
          content="File Upload widget with multiple file selection, drag&amp;drop support, progress bars, validation and preview images, audio and video for jQuery. Supports cross-domain, chunked and resumable file uploads and client-side image resizing. Works with any server-side platform (PHP, Python, Ruby on Rails, Java, Node.js, Go etc.) that supports standard HTML form file uploads." />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <!-- Bootstrap styles -->
    <link rel="stylesheet"
          href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css"
          integrity="sha384-BVYiiSIFeK1dGmJRAkycuHAHRg32OmUcww7on3RYdg4Va+PmSTsz/K68vbdEjh4u"
          crossorigin="anonymous" />
    <!-- Generic page styles -->
    <style>
      #navigation {
        margin: 10px 0;
      }
      @@media (max-width: 767px) {
        #title,
        #description {
          display: none;
        }
      }
    </style>
    <!-- blueimp Gallery styles -->
    <link rel="stylesheet"
          href="https://blueimp.github.io/Gallery/css/blueimp-gallery.min.css" />
    <!-- CSS to style the file input field as button and adjust the Bootstrap progress bars -->
    <link rel="stylesheet" href="~/css/jquery.fileupload.css" />
    <link rel="stylesheet" href="~/css/jquery.fileupload-ui.css" />
    <!-- CSS adjustments for browsers with JavaScript disabled -->
    <noscript>
        <link rel="stylesheet" href="~/css/jquery.fileupload-noscript.css" />
    </noscript>
    <noscript>
        <link rel="stylesheet" href="~/css/jquery.fileupload-ui-noscript.css" />
    </noscript>
</head>
<body>
    <div class="container">
        <ul class="nav nav-tabs" id="navigation">
            <li>
                <a href="https://github.com/blueimp/jQuery-File-Upload">Project</a>
            </li>
            <li class="active">
                <a href="#">Demo</a>
            </li>
            <li>
                <a href="https://github.com/blueimp/jQuery-File-Upload/wiki">Wiki</a>
            </li>
            <li>
                <a href="https://blueimp.net">Author</a>
            </li>
        </ul>
        <h1 id="title">jQuery File Upload Demo</h1>
        <blockquote id="description">
            <p>
                File Upload widget with multiple file selection, drag&amp;drop
                support, progress bars, validation and preview images, audio and video
                for jQuery.<br />
                Supports cross-domain, chunked and resumable file uploads and
                client-side image resizing.<br />
                Works with any server-side platform (PHP, Python, Ruby on Rails, Java,
                Node.js, Go etc.) that supports standard HTML form file uploads.
            </p>
        </blockquote>
        <!-- The file upload form used as target for the file upload widget -->
        <form id="fileupload"
              action="https://jquery-file-upload.appspot.com/"
              method="POST"
              enctype="multipart/form-data">
            <!-- Redirect browsers with JavaScript disabled to the origin page -->
            <noscript>
                <input type="hidden"
                       name="redirect"
                       value="https://blueimp.github.io/jQuery-File-Upload/" />
            </noscript>
            <!-- The fileupload-buttonbar contains buttons to add/delete files and start/cancel the upload -->
            <div class="row fileupload-buttonbar">
                <div class="col-lg-7">
                    <!-- The fileinput-button span is used to style the file input field as button -->
                    <span class="btn btn-success fileinput-button">
                        <i class="glyphicon glyphicon-plus"></i>
                        <span>Add files...</span>
                        <input type="file" name="files" multiple />
                    </span>
                    <button type="submit" class="btn btn-primary start">
                        <i class="glyphicon glyphicon-upload"></i>
                        <span>Start upload</span>
                    </button>
                    <button type="reset" class="btn btn-warning cancel">
                        <i class="glyphicon glyphicon-ban-circle"></i>
                        <span>Cancel upload</span>
                    </button>
                    <button type="button" class="btn btn-danger delete">
                        <i class="glyphicon glyphicon-trash"></i>
                        <span>Delete selected</span>
                    </button>
                    <input type="checkbox" class="toggle" />
                    <!-- The global file processing state -->
                    <span class="fileupload-process"></span>
                </div>
                <!-- The global progress state -->
                <div class="col-lg-5 fileupload-progress fade">
                    <!-- The global progress bar -->
                    <div class="progress progress-striped active"
                         role="progressbar"
                         aria-valuemin="0"
                         aria-valuemax="100">
                        <div class="progress-bar progress-bar-success"
                             style="width: 0%;"></div>
                    </div>
                    <!-- The extended global progress state -->
                    <div class="progress-extended">&nbsp;</div>
                </div>
            </div>
            <!-- The table listing the files available for upload/download -->
            <table role="presentation" class="table table-striped">
                <tbody class="files"></tbody>
            </table>
        </form>
        <div class="panel panel-default">
            <div class="panel-heading">
                <h3 class="panel-title">Demo Notes</h3>
            </div>
            <div class="panel-body">
                <ul>
                    <li>
                        The maximum file size for uploads in this demo is
                        <strong>999 KB</strong> (default file size is unlimited).
                    </li>
                    <li>
                        Only image files (<strong>JPG, GIF, PNG</strong>) are allowed in
                        this demo (by default there is no file type restriction).
                    </li>
                    <li>
                        Uploaded files will be deleted automatically after
                        <strong>5 minutes or less</strong> (demo files are stored in
                        memory).
                    </li>
                    <li>
                        You can <strong>drag &amp; drop</strong> files from your desktop
                        on this webpage (see
                        <a href="https://github.com/blueimp/jQuery-File-Upload/wiki/Browser-support">Browser support</a>).
                    </li>
                    <li>
                        Please refer to the
                        <a href="https://github.com/blueimp/jQuery-File-Upload">project website</a>
                        and
                        <a href="https://github.com/blueimp/jQuery-File-Upload/wiki">documentation</a>
                        for more information.
                    </li>
                    <li>
                        Built with the
                        <a href="https://getbootstrap.com/">Bootstrap</a> CSS framework
                        and Icons from <a href="https://glyphicons.com/">Glyphicons</a>.
                    </li>
                </ul>
            </div>
        </div>
    </div>
    <!-- The blueimp Gallery widget -->
    <div id="blueimp-gallery"
         class="blueimp-gallery blueimp-gallery-controls"
         aria-label="image gallery"
         aria-modal="true"
         role="dialog"
         data-filter=":even">
        <div class="slides" aria-live="polite"></div>
        <h3 class="title"></h3>
        <a class="prev"
           aria-controls="blueimp-gallery"
           aria-label="previous slide"
           aria-keyshortcuts="ArrowLeft"></a>
        <a class="next"
           aria-controls="blueimp-gallery"
           aria-label="next slide"
           aria-keyshortcuts="ArrowRight"></a>
        <a class="close"
           aria-controls="blueimp-gallery"
           aria-label="close"
           aria-keyshortcuts="Escape"></a>
        <a class="play-pause"
           aria-controls="blueimp-gallery"
           aria-label="play slideshow"
           aria-keyshortcuts="Space"
           aria-pressed="false"
           role="button"></a>
        <ol class="indicator"></ol>
    </div>
    <!-- The template to display files available for upload -->
    <script id="template-upload" type="text/x-tmpl">
        {% for (var i=0, file; file=o.files[i]; i++) { %}
        <tr class="template-upload fade{%=o.options.loadImageFileTypes.test(file.type)?' image':''%}">
            <td>
                <span class="preview"></span>
            </td>
            <td>
                <p class="name">{%=file.name%}</p>
                <strong class="error text-danger"></strong>
            </td>
            <td>
                <p class="size">Processing...</p>
                <div class="progress progress-striped active" role="progressbar" aria-valuemin="0" aria-valuemax="100" aria-valuenow="0"><div class="progress-bar progress-bar-success" style="width:0%;"></div></div>
            </td>
            <td>
                {% if (!o.options.autoUpload && o.options.edit && o.options.loadImageFileTypes.test(file.type)) { %}
                <button class="btn btn-success edit" data-index="{%=i%}" disabled>
                    <i class="glyphicon glyphicon-edit"></i>
                    <span>Edit</span>
                </button>
                {% } %}
                {% if (!i && !o.options.autoUpload) { %}
                <button class="btn btn-primary start" disabled>
                    <i class="glyphicon glyphicon-upload"></i>
                    <span>Start</span>
                </button>
                {% } %}
                {% if (!i) { %}
                <button class="btn btn-warning cancel">
                    <i class="glyphicon glyphicon-ban-circle"></i>
                    <span>Cancel</span>
                </button>
                {% } %}
            </td>
        </tr>
        {% } %}
    </script>
    <!-- The template to display files available for download -->
    <script id="template-download" type="text/x-tmpl">
        {% for (var i=0, file; file=o.files[i]; i++) { %}
        <tr class="template-download fade{%=file.thumbnailUrl?' image':''%}">
            <td>
                <span class="preview">
                    {% if (file.thumbnailUrl) { %}
                    <a href="{%=file.url%}" title="{%=file.name%}" download="{%=file.name%}" data-gallery><img src="{%=file.thumbnailUrl%}"></a>
                    {% } %}
                </span>
            </td>
            <td>
                <p class="name">
                    {% if (file.url) { %}
                    <a href="{%=file.url%}" title="{%=file.name%}" download="{%=file.name%}" {%=file.thumbnailUrl?'data-gallery':''%}>{%=file.name%}</a>
                    {% } else { %}
                    <span>{%=file.name%}</span>
                    {% } %}
                </p>
                {% if (file.error) { %}
                <div><span class="label label-danger">Error</span> {%=file.error%}</div>
                {% } %}
            </td>
            <td>
                <span class="size">{%=o.formatFileSize(file.size)%}</span>
            </td>
            <td>
                {% if (file.deleteUrl) { %}
                <button class="btn btn-danger delete" data-type="{%=file.deleteType%}" data-url="{%=file.deleteUrl%}" {% if (file.deleteWithCredentials) { %} data-xhr-fields='{"withCredentials":true}' {% } %}>
                    <i class="glyphicon glyphicon-trash"></i>
                    <span>Delete</span>
                </button>
                <input type="checkbox" name="delete" value="1" class="toggle">
                {% } else { %}
                <button class="btn btn-warning cancel">
                    <i class="glyphicon glyphicon-ban-circle"></i>
                    <span>Cancel</span>
                </button>
                {% } %}
            </td>
        </tr>
        {% } %}
    </script>
    <script src="https://ajax.googleapis.com/ajax/libs/jquery/1.12.4/jquery.min.js"
            integrity="sha384-nvAa0+6Qg9clwYCGGPpDQLVpLNn0fRaROjHqs13t4Ggj3Ez50XnGQqc/r8MhnRDZ"
            crossorigin="anonymous"></script>
    <!-- The jQuery UI widget factory, can be omitted if jQuery UI is already included -->
    <script src="~/js/vendor/jquery.ui.widget.js"></script>
    <!-- The Templates plugin is included to render the upload/download listings -->
    <script src="https://blueimp.github.io/JavaScript-Templates/js/tmpl.min.js"></script>
    <!-- The Load Image plugin is included for the preview images and image resizing functionality -->
    <script src="https://blueimp.github.io/JavaScript-Load-Image/js/load-image.all.min.js"></script>
    <!-- The Canvas to Blob plugin is included for image resizing functionality -->
    <script src="https://blueimp.github.io/JavaScript-Canvas-to-Blob/js/canvas-to-blob.min.js"></script>
    <!-- blueimp Gallery script -->
    <script src="https://blueimp.github.io/Gallery/js/jquery.blueimp-gallery.min.js"></script>
    <!-- The Iframe Transport is required for browsers without support for XHR file uploads -->
    <script src="~/js/jquery.iframe-transport.js"></script>
    <!-- The basic File Upload plugin -->
    <script src="~/js/jquery.fileupload.js"></script>
    <!-- The File Upload processing plugin -->
    <script src="~/js/jquery.fileupload-process.js"></script>
    <!-- The File Upload image preview & resize plugin -->
    <script src="~/js/jquery.fileupload-image.js"></script>
    <!-- The File Upload audio preview plugin -->
    <script src="~/js/jquery.fileupload-audio.js"></script>
    <!-- The File Upload video preview plugin -->
    <script src="~/js/jquery.fileupload-video.js"></script>
    <!-- The File Upload validation plugin -->
    <script src="~/js/jquery.fileupload-validate.js"></script>
    <!-- The File Upload user interface plugin -->
    <script src="~/js/jquery.fileupload-ui.js"></script>
    <!-- The main application script -->
    <script src="~/js/demo.js"></script>
    <!-- The XDomainRequest Transport is included for cross-domain file deletion for IE 8 and IE 9 -->
    <!--[if (gte IE 8)&(lt IE 10)]>
      <script src="~/js/cors/jquery.xdr-transport.js"></script>
    <![endif]-->
</body>
</html>

When I run the ASP.NET Core 3.1 I get the error -

  • "Empty file upload result"

Why it is so ?. Please help. Thank you.

来源:https://stackoverflow.com/questions/63792052/blueimp-jquery-file-upload-not-compatible-with-asp-net-core-3-1

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