jQuery Uploadify在ASP.NET MVC3中的使用

1、Uploadify简介

Uploadify是基于jQuery的一种上传插件，支持多文件、带进度条显示上传，在项目开发中常被使用。

Uploadify官方网址：http://www.uploadify.com/

2、ASP.NET MVC3中的使用Uploadify

搭建ASP.NET MVC3解决方案如下图，其中使用到的Uploadify为3.1版本：

　　1>、简单示例

_Layout.cshtml代码：

<!DOCTYPE html>
<html>
<head>
    <title>@ViewBag.Title</title>
    @RenderSection("Header")
</head>

<body>
    @RenderBody()
</body>
</html>

Index.cshtml代码：

@{
    ViewBag.Title = "Index";
    Layout = "~/Views/Shared/_Layout.cshtml";
}
@section Header{
    <link href="@Url.Content("~/Scripts/uploadify-v3.1/uploadify.css")" rel="stylesheet" type="text/css" />
    <script src="@Url.Content("~/Scripts/jquery-1.8.1.min.js")" type="text/javascript"></script>
    <script src="@Url.Content("~/Scripts/uploadify-v3.1/jquery.uploadify-3.1.min.js")" type="text/javascript"></script>
    <script type="text/javascript">
        $(function () {
            $('#file_upload').uploadify({
                'swf'        : '@Url.Content("~/Scripts/uploadify-v3.1/uploadify.swf")',
                'uploader'   : '/Home/Upload'
            });
        });
    </script>
    <style type="text/css">
        body
        {
            font-size: 12px;
        }
        .tip
        {
            height: 20px;
            border-bottom: 1px solid #CCC;
            margin-bottom: 10px;
        }
    </style>
}
<div class="tip">
    jQuey Uploadify上传文件示例：
</div>
<input type="file" id="file_upload" name="file_upload" />

HomeController.cs代码:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Mvc;

using System.IO;

namespace WebUI.Controllers
{
    public class HomeController : Controller
    {
        //
        // GET: /Home/

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

        [AcceptVerbs(HttpVerbs.Post)]
        public JsonResult Upload(HttpPostedFileBase fileData)
        {
            if (fileData != null)
            {
                try
                {
                    // 文件上传后的保存路径
                    string filePath = Server.MapPath("~/Uploads/");
                    if (!Directory.Exists(filePath))
                    {
                        Directory.CreateDirectory(filePath);
                    }
                    string fileName = Path.GetFileName(fileData.FileName);// 原始文件名称
                    string fileExtension = Path.GetExtension(fileName); // 文件扩展名
                    string saveName = Guid.NewGuid().ToString() + fileExtension; // 保存文件名称

                    fileData.SaveAs(filePath + saveName);

                    return Json(new { Success = true, FileName = fileName, SaveName = saveName });
                }
                catch (Exception ex)
                {
                    return Json(new { Success = false, Message = ex.Message }, JsonRequestBehavior.AllowGet);
                }
            }
            else
            {

                return Json(new { Success = false, Message = "请选择要上传的文件！" }, JsonRequestBehavior.AllowGet);
            }
        }
    }
}

上传效果图：

2>、设置上传图片大小

ASP.NET MVC默认情况下，允许上传的文件大小最大为4MB。因此在默认情况下，Uploadify也只能最大上传4MB大小的文件，超过范围则会IO报错提示无法上传。

修改Web.config设置允许上传的最大文件大小：

<system.web>
　　<!--设置最大允许上传文件大小1G-->
　　<httpRuntime maxRequestLength= "102400" executionTimeout= "60" />
</system.web>

　　修改最大上传文件大小后效果：

3>、Uploadify常用属性设置

auto：是否选择文件后自动上传，默认为true。

@{
    ViewBag.Title = "Index";
    Layout = "~/Views/Shared/_Layout.cshtml";
}
@section Header{
    <link href="@Url.Content("~/Scripts/uploadify-v3.1/uploadify.css")" rel="stylesheet" type="text/css" />
    <script src="@Url.Content("~/Scripts/jquery-1.8.1.min.js")" type="text/javascript"></script>
    <script src="@Url.Content("~/Scripts/uploadify-v3.1/jquery.uploadify-3.1.min.js")" type="text/javascript"></script>
    <script type="text/javascript">
        $(function () {
            $('#file_upload').uploadify({
                'auto'       : false,
                'swf'        : '@Url.Content("~/Scripts/uploadify-v3.1/uploadify.swf")',
                'uploader'   : '/Home/Upload'
            });
        });
    </script>
    <style type="text/css">
        body
        {
            font-size: 12px;
        }
        .tip
        {
            height: 20px;
            border-bottom: 1px solid #CCC;
            margin-bottom: 10px;
        }
    </style>
}
<div class="tip">
    jQuey Uploadify上传文件示例：
</div>
<div>
    <input type="file" id="file_upload" name="file_upload" />
</div>
<div>
    <a href="javascript:$('#file_upload').uploadify('upload');">上传</a>
</div>

buttonText：设置上传按钮显示文字。

<script type="text/javascript">
    $(function () {
        $('#file_upload').uploadify({
            'buttonText'       : '请选择上传文件',
            'swf'        : '@Url.Content("~/Scripts/uploadify-v3.1/uploadify.swf")',
            'uploader'   : '/Home/Upload'
        });
    });
</script>

buttonImage：设置上传按钮背景图片。

@{
    ViewBag.Title = "Index";
    Layout = "~/Views/Shared/_Layout.cshtml";
}
@section Header{
    <link href="@Url.Content("~/Scripts/uploadify-v3.1/uploadify.css")" rel="stylesheet" type="text/css" />
    <script src="@Url.Content("~/Scripts/jquery-1.8.1.min.js")" type="text/javascript"></script>
    <script src="@Url.Content("~/Scripts/uploadify-v3.1/jquery.uploadify-3.1.min.js")" type="text/javascript"></script>
    <script type="text/javascript">
        $(function () {
            $('#file_upload').uploadify({
                'buttonImage': '@Url.Content("~/Scripts/uploadify-v3.1/browse-btn.png")',
                'swf': '@Url.Content("~/Scripts/uploadify-v3.1/uploadify.swf")',
                'uploader': '/Home/Upload'
            });
        });
    </script>
    <style type="text/css">
        body
        {
            font-size: 12px;
        }
        .tip
        {
            height: 20px;
            border-bottom: 1px solid #CCC;
            margin-bottom: 10px;
        }
        .uploadify-button
        {
            background-color: transparent;
            border: none;
            padding: 0;
        }
        .uploadify:hover .uploadify-button
        {
            background-color: transparent;
        }
    </style>
}
<div class="tip">
    jQuey Uploadify上传文件示例：
</div>
<div>
    <input type="file" id="file_upload" name="file_upload" />
</div>

multi：是否允许一次选择多个文件一起上传，默认为true。

<script type="text/javascript">
    $(function () {
        $('#file_upload').uploadify({
            'buttonImage': '@Url.Content("~/Scripts/uploadify-v3.1/browse-btn.png")',
            multi: true,
            'swf': '@Url.Content("~/Scripts/uploadify-v3.1/uploadify.swf")',
            'uploader': '/Home/Upload'
        });
    });
</script>

fileTypeDesc：设置允许上传图片格式描述；

fileTypeExts：设置允许上传图片格式。

<script type="text/javascript">
    $(function () {
        $('#file_upload').uploadify({
            'buttonImage': '@Url.Content("~/Scripts/uploadify-v3.1/browse-btn.png")',
            'fileTypeDesc': '图片文件',
            'fileTypeExts': '*.gif; *.jpg; *.png', 
            'swf': '@Url.Content("~/Scripts/uploadify-v3.1/uploadify.swf")',
            'uploader': '/Home/Upload'
        });
    });
</script>

removeCompleted：设置已完成上传的文件是否从队列中移除，默认为true。

$(function() {
    $("#file_upload").uploadify({
        'removeCompleted' : false,
        'swf'             : '/uploadify/uploadify.swf',
        'uploader'        : '/uploadify/uploadify.php'
    });
});

queueSizeLimit：设置上传队列中同时允许的上传文件数量，默认为999。

$(function() {
    $("#file_upload").uploadify({
        'queueSizeLimit' : 1,
        'swf'            : '/uploadify/uploadify.swf',
        'uploader'       : '/uploadify/uploadify.php'
    });
});

uploadLimit：设置允许上传的文件数量，默认为999。

$(function() {
    $("#file_upload").uploadify({
        'swf'         : '/uploadify/uploadify.swf',
        'uploader'    : '/uploadify/uploadify.php',
        'uploadLimit' : 1
    });
});

4>、Uploadify常用事件设置

onUploadComplete:单个文件上传完成时触发事件。

$(function() {
    $("#file_upload").uploadify({
        'swf'              : '/uploadify/uploadify.swf',
        'uploader'         : '/uploadify/uploadify.php',
        'onUploadComplete' : function(file) {
            alert('The file ' + file.name + ' finished processing.');
        }
    });
});

onQueueComplete：队列中全部文件上传完成时触发事件。

$(function() {
    $("#file_upload").uploadify({
        'swf'      : '/uploadify/uploadify.swf',
        'uploader' : '/uploadify/uploadify.php',
        'onQueueComplete' : function(queueData) {
            alert(queueData.uploadsSuccessful + ' files were successfully uploaded.');
        }
    });
});

onUploadSuccess：单个文件上传成功后触发事件。

<script type="text/javascript">
    $(function () {
        $('#file_upload').uploadify({
            'buttonImage': '@Url.Content("~/Scripts/uploadify-v3.1/browse-btn.png")',
            'swf': '@Url.Content("~/Scripts/uploadify-v3.1/uploadify.swf")',
            'uploader': '/Home/Upload',
            'onUploadSuccess': function (file, data, response) {
                eval("data=" + data);
                alert('文件 ' + file.name + ' 已经上传成功，并返回 ' + response + ' 保存文件名称为 ' + data.SaveName);
            }
        });
    });
</script>

4>、Uploadify常用方法

upload：上传文件

cancel：取消上传

@{
    ViewBag.Title = "Index";
    Layout = "~/Views/Shared/_Layout.cshtml";
}
@section Header{
    <link href="@Url.Content("~/Scripts/uploadify-v3.1/uploadify.css")" rel="stylesheet" type="text/css" />
    <script src="@Url.Content("~/Scripts/jquery-1.8.1.min.js")" type="text/javascript"></script>
    <script src="@Url.Content("~/Scripts/uploadify-v3.1/jquery.uploadify-3.1.min.js")" type="text/javascript"></script>
    <script type="text/javascript">
        $(function () {
            $('#file_upload').uploadify({
                'auto'         : false,
                'buttonImage'  : '@Url.Content("~/Scripts/uploadify-v3.1/browse-btn.png")',
                'swf'          : '@Url.Content("~/Scripts/uploadify-v3.1/uploadify.swf")',
                'uploader'     : '/Home/Upload'
            });
        });
    </script>
    <style type="text/css">
        body
        {
            font-size: 12px;
        }
        .tip
        {
            height: 20px;
            border-bottom: 1px solid #CCC;
            margin-bottom: 10px;
        }
        .uploadify-button
        {
            background-color: transparent;
            border: none;
            padding: 0;
        }
        .uploadify:hover .uploadify-button
        {
            background-color: transparent;
        }
    </style>
}
<div class="tip">
    jQuey Uploadify上传文件示例：
</div>
<div>
    <input type="file" id="file_upload" name="file_upload" />
</div>
<div>
    <a href="javascript:$('#file_upload').uploadify('upload');">上传第一个</a>
    <a href="javascript:$('#file_upload').uploadify('upload','*');">上传队列</a> 
    <a href="javascript:$('#file_upload').uploadify('cancel');">取消第一个</a>
    <a href="javascript:$('#file_upload').uploadify('cancel', '*');">取消队列</a>
</div>

3、示例代码附件

jQueryUploadifyDemo.rar

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原文地址：https://www.cnblogs.com/libingql/p/2681007.html