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问精细的Uploader仅用asp.net MVC C#上传空
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Stack Overflow用户

提问于 2018-07-09 09:41:55

回答 1查看 764关注 0票数 1

我有一段MVC asp.net C#，它使用FineUploader。我以前在PHP中使用过它，没有任何问题，但是在asp.net c# mvc中，它失败了(它会触发但总是posts为空)，有人能解释一下为什么吗？我认为这是默认的传输是不精确的，而且它并不真正使用IFormFile，但是如果没有FineUploader的任何文档，就不可能知道它们所依赖的传输结构--不管c#控制器正确地触发，但其中包含null。

下面是<head>标记

 <!-- Fine Uploader Gallery CSS file
====================================================================== -->
<link rel="stylesheet" href="/fine-uploader/fine-uploader-new.css" />
<link rel="stylesheet" href="/fine-uploader/fine-uploader-gallery.css" />


<!-- Fine Uploader JS file
====================================================================== -->
<script src="/fine-uploader/fine-uploader.core.js"></script>
<script src="/fine-uploader/fine-uploader.js"></script>    

<!-- Fine Uploader Gallery template
====================================================================== -->
<script type="text/template" id="qq-template-gallery">
    <div class="qq-uploader-selector qq-uploader qq-gallery" qq-drop-area-text="Drop files here">
        <div class="qq-total-progress-bar-container-selector qq-total-progress-bar-container">
            <div role="progressbar" aria-valuenow="0" aria-valuemin="0" aria-valuemax="100" class="qq-total-progress-bar-selector qq-progress-bar qq-total-progress-bar"></div>
        </div>
        <div class="qq-upload-drop-area-selector qq-upload-drop-area" qq-hide-dropzone>
            <span class="qq-upload-drop-area-text-selector"></span>
        </div>
        <div class="qq-upload-button-selector qq-upload-button">
            <div>Upload a file</div>
        </div>
        <span class="qq-drop-processing-selector qq-drop-processing">
            <span>Processing dropped files...</span>
            <span class="qq-drop-processing-spinner-selector qq-drop-processing-spinner"></span>
        </span>
        <ul class="qq-upload-list-selector qq-upload-list" role="region" aria-live="polite" aria-relevant="additions removals">
            <li>
                <span role="status" class="qq-upload-status-text-selector qq-upload-status-text"></span>
                <div class="qq-progress-bar-container-selector qq-progress-bar-container">
                    <div role="progressbar" aria-valuenow="0" aria-valuemin="0" aria-valuemax="100" class="qq-progress-bar-selector qq-progress-bar"></div>
                </div>
                <span class="qq-upload-spinner-selector qq-upload-spinner"></span>
                <div class="qq-thumbnail-wrapper">
                    <img class="qq-thumbnail-selector" qq-max-size="120" qq-server-scale>
                </div>
                <button type="button" class="qq-upload-cancel-selector qq-upload-cancel">X</button>
                <button type="button" class="qq-upload-retry-selector qq-upload-retry">
                    <span class="qq-btn qq-retry-icon" aria-label="Retry"></span>
                    Retry
                </button>

                <div class="qq-file-info">
                    <div class="qq-file-name">
                        <span class="qq-upload-file-selector qq-upload-file"></span>
                        <span class="qq-edit-filename-icon-selector qq-edit-filename-icon" aria-label="Edit filename"></span>
                    </div>
                    <input class="qq-edit-filename-selector qq-edit-filename" tabindex="0" type="text">
                    <span class="qq-upload-size-selector qq-upload-size"></span>
                    <button type="button" class="qq-btn qq-upload-delete-selector qq-upload-delete">
                        <span class="qq-btn qq-delete-icon" aria-label="Delete"></span>
                    </button>
                    <button type="button" class="qq-btn qq-upload-pause-selector qq-upload-pause">
                        <span class="qq-btn qq-pause-icon" aria-label="Pause"></span>
                    </button>
                    <button type="button" class="qq-btn qq-upload-continue-selector qq-upload-continue">
                        <span class="qq-btn qq-continue-icon" aria-label="Continue"></span>
                    </button>
                </div>
            </li>
        </ul>

        <dialog class="qq-alert-dialog-selector">
            <div class="qq-dialog-message-selector"></div>
            <div class="qq-dialog-buttons">
                <button type="button" class="qq-cancel-button-selector">Close</button>
            </div>
        </dialog>

        <dialog class="qq-confirm-dialog-selector">
            <div class="qq-dialog-message-selector"></div>
            <div class="qq-dialog-buttons">
                <button type="button" class="qq-cancel-button-selector">No</button>
                <button type="button" class="qq-ok-button-selector">Yes</button>
            </div>
        </dialog>

        <dialog class="qq-prompt-dialog-selector">
            <div class="qq-dialog-message-selector"></div>
            <input type="text">
            <div class="qq-dialog-buttons">
                <button type="button" class="qq-cancel-button-selector">Cancel</button>
                <button type="button" class="qq-ok-button-selector">Ok</button>
            </div>
        </dialog>
    </div>
</script>

下面是<body>标记

        <!-- Fine Uploader DOM Element
            ====================================================================== -->
        <div id="fine-uploader-gallery"></div>

        <!-- Your code to create an instance of Fine Uploader and bind to the DOM/template
               ====================================================================== -->
        <script>
            var galleryUploader = new qq.FineUploader({
                element: document.getElementById("fine-uploader-gallery"),
                template: 'qq-template-gallery',
                request: {
                    endpoint: '@Url.Action("UploadFile", "Home")'
                },
                thumbnails: {
                    placeholders: {
                        waitingPath: '/fine-uploader/waiting-generic.png',
                        notAvailablePath: '/fine-uploader/not_available-generic.png'
                    }
                },
                validation: {
                    allowedExtensions: ['jpeg', 'jpg', 'gif', 'png']
                }
            });
        </script>

这是HomeController.cs控制器

    [HttpPost]
    public IActionResult UploadFile(IFormFile file)
    {
        if (file != null)
        {
            using (var reader = new StreamReader(file.OpenReadStream()))
            {
                string contentAsString = reader.ReadToEnd();
                byte[] contentAsByteArray = GetBytes(contentAsString);
                return File(contentAsByteArray, file.ContentType);
            }
        }
        return null;
    }

我知道它会触发服务器，因为当我上传三个条目时，控制器会触发3次。但都是空的。

顺便说一句，即使文件路径是正确的，但对于额外的积分，我也总是会得到以下控制台错误

asp.net-mvc

fine-uploader

回答 1

Stack Overflow用户

发布于 2018-10-31 20:07:03

默认情况下，精细Uploader将在多部分编码POST请求正文中发送该文件。您可以使用Request对象而不是方法参数。
服务器应该对所有请求返回有效的JSON响应。 HttpPost ActionResult UploadFiles() { string path =Server.MapPath(“~/上载/”)；var fileExists = Request.Files.Count > 0；if (fileExists) { if (！Directory.Exists(Path)Directory.CreateDirectory)(Path)；如果(fileBase != null) { string fileName = Path.GetFileName(fileBase.FileName)；fileBase.SaveAs(path + fileName)；}返回Json(新的{ success = "true"})；} catch (异常ex) {返回Json(新的{ success = "false"，error = ex.Message })；})返回Json(新的{ success = "false"})；}

票数 2

页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持

原文链接：

https://stackoverflow.com/questions/51242478

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