（转）.net mvc 大文件上传

原文地址：

http://www.cnblogs.com/lucslg/archive/2011/06/26/2090885.html

因客户需要上传大文件，传统的mvc文件上传方法无法满足当前需求。所以哥就只能在网搜现成的列子，找了半天也没有找到好的demo.

大部分多是.net webFrom的例子。都是封装好的控件，顿时郁闷。

在网上虽然没有找到好的例子，但也在找到很好的解决方法那就是使用 swfUpload控件。swfUpload是javascript和falsh的合体。网上推荐指数比较高，资料也比较多。

中文api网址：http://leeon.me/upload/other/swfupload.html

1.想看截图。

2.swfUpload比较灵活，可自由扩展，就是需要花时间熟悉。本人花了半天时间才理清楚。官网上也有。net例子也是webFrom的

3.废话少说直接看代码：控制层：  
public Guid Swfupload()   
{   
    string uploadsFolder = HttpContext.Server.MapPath("~/Upload");   
    Guid identifier = Guid.NewGuid();   
    var uploadsPath = Path.Combine(uploadsFolder, identifier.ToString());   
    var httpfile = Request.Files["Filedata"];   
    if (httpfile != null)   
    {   
        httpfile.SaveAs(uploadsPath);   
    }   
    return identifier;   
}

4.显示层可以看官网的例子。还是挺好的。本人结合jqueryUI控件又写了一个例子。主要是替换官网的进度条。

是点击上传时，在对话框里显示上传进度。

@{
    ViewBag.Title = "文件上传Demo";
    Layout = "~/Views/Shared/_Layout.cshtml";
}
@section Head{
    <script src="/Scripts/SwfUpload/swfupload.js" type="text/javascript"></script>
    <script src="/Scripts/SwfUpload/plugins/swfupload.queue.js" type="text/javascript"></script>
    <script src="/Scripts/SwfUpload/plugins/swfupload.speed.js" type="text/javascript"></script>
    <script type="text/javascript">
        var swfu;
        window.onload = function () {
            swfu = new SWFUpload({
                upload_url: "/Home/Swfupload",
                flash_url: "/Scripts/SwfUpload/Flash/swfupload.swf",
                file_size_limit: "1500 MB",
                file_types: "*.*",
                file_types_description: "All Files",
                file_upload_limit: 0,
                file_queue_limit: 1,
                debug: false,

                // Button settings
                button_image_url: "/Scripts/SwfUpload/Images/TestImageNoText_65x29.png",
                button_ "65",
                button_height: "29",
                button_placeholder_id: "spanButtonPlaceHolder",
                button_text: '<span class="theFont">浏览</span>',
                button_text_style: ".theFont { font-size: 16; }",
                button_text_left_padding: 12,
                button_text_top_padding: 3,


                file_dialog_complete_handler: function (numFilesSelected, numFilesQueued) {
                },
                file_queued_handler: function (file) {
                    $("#fileName").val(file.name);
                },
                upload_progress_handler: function (file, complete, total) {
                    var value = complete / total * 100;
                    $("#progressbar").progressbar("value", value);
                    $("#CurrentSpeed").html(SWFUpload.speed.formatBPS(file.currentSpeed));
                },
                upload_success_handler: function (file, data) {
                    alert("文件上传成功");
                    $("#fileProgress").dialog("close");
                }

            });
            $("#btnSubmit").click(function () {
                if (swfu.getStats().files_queued > 0) {
                    $("#fileProgress").dialog({
                        modal: true,
                         400,
                        open: function () {
                            $("#progressbar").progressbar({
                                value: 0
                            });

                            swfu.startUpload();

                        }
                    });
                }

            });

            $("#cancelButton").click(function () {
                swfu.stopUpload();
            });
        };
    </script>
}
<fieldset>
    <legend>文件上传Demo</legend>
    <div>
        <input type="text" id="fileName" />
        <span id="spanButtonPlaceHolder">浏览</span>
        <button id="btnSubmit">
            上传</button>
    </div>
</fieldset>
<div title="文件上传进度" id="fileProgress" style="display: none">
    <div id="progressbar">
    </div>
    <button id="cancelButton">
        取消上传</button>
    当前上传速度： <span id="CurrentSpeed"></span>
</div>

5.Demo下载地址：https://files.cnblogs.com/lucslg/SwfUploadDemo.rar