有时项目中需要一个文件批量上传功能时，个人认为uploadify是快速简便的解决方案，分享给大家供大家参考，具体如下
先上效果图：
具体代码如下：
在页面中如下
完整页面代码
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %> <!DOCTYPE html> <html xmlns="http://www.w3.org/1999/xhtml"> <head runat="server"> <meta http-equiv="Content-Type" content="text/html; charset=utf-8"/> <title>文件批量上传Demo</title> <> <script src="js/jquery-1.11.3.min.js"></script> <> <script type="text/javascript" src="uploadify/jquery.uploadify.js"></script> <link type="text/css" href="uploadify/uploadify.css" rel="stylesheet" /> <script type="text/javascript"> $(function () { var guid = '<%=Request["guid"] %>'; var type = '<%=Request["type"] %>'; if (guid == null || guid == "") { guid = newGuid(); } if (type != null) { type = type + '/'; } $('#file_upload').uploadify({ 'swf': 'uploadify/uploadify.swf', //FLash文件路径 'buttonText': '浏 览', //按钮文本 'uploader': 'uploadhandler.ashx?guid=' + guid, //处理ASHX页面 'formData': { 'folder': 'picture', 'isCover': 1 }, //传参数 'queueID': 'fileQueue', //队列的ID 'queueSizeLimit': 10, //队列最多可上传文件数量，默认为999 'auto': false, //选择文件后是否自动上传，默认为true 'multi': true, //是否为多选，默认为true 'removeCompleted': true, //是否完成后移除序列，默认为true 'fileSizeLimit': '0', //单个文件大小，0为无限制，可接受KB,MB,GB等单位的字符串值 'fileTypeDesc': 'All Files', //文件描述 'fileTypeExts': '*.*', //上传的文件后缀过滤器 'onQueueComplete': function (queueData) { //所有队列完成后事件 alert("上传完毕！"); }, 'onError': function (event, queueId, fileObj, errorObj) { alert(errorObj.type + "：" + errorObj.info); }, 'onUploadStart': function (file) { }, 'onUploadSuccess': function (file, data, response) { //一个文件上传成功后的响应事件处理 //var data = $.parseJSON(data);//如果data是json格式 //var errMsg = ""; } }); }); function newGuid() { var guid = ""; for (var i = 1; i <= 32; i++) { var n = Math.floor(Math.random() * 16.0).toString(16); guid += n; if ((i == 8) || (i == 12) || (i == 16) || (i == 20)) guid += "-"; } return guid; } //执行上传 function doUpload() { $('#file_upload').uploadify('upload', '*'); } </script> </head> <body> <form id="form1" runat="server" enctype="multipart/form-data"> <div id="fileQueue"></div> <div> <input type="file" name="file_upload" id="file_upload" /> <p> <input type="button" id="btnUpload" value="上传" /> <input type="button" id="btnCancelUpload" value="取消" /> </p> <div id="div_show_files"></div> </div> </form> </body> </html>
UploadHandler.ashx代码：
using System; using System.Web; using System.IO; public class UploadHandler : IHttpHandler { public void ProcessRequest (HttpContext context) { context.Response.ContentType = "text/plain"; context.Request.ContentEncoding = System.Text.Encoding.GetEncoding("UTF-8"); context.Response.ContentEncoding = System.Text.Encoding.GetEncoding("UTF-8"); context.Response.Charset = "UTF-8"; if (context.Request.Files.Count > 0) { #region 获取上传路径 string uploadFolder = GetUploadFolder(); #endregion if (System.IO.Directory.Exists(uploadFolder)) {//如果上传路径存在 HttpPostedFile file = context.Request.Files["Filedata"]; string filePath = Path.Combine(uploadFolder, file.FileName); file.SaveAs(filePath); context.Response.Write("0"); } else { context.Response.Write("2"); } } } public bool IsReusable { get { return false; } } /// <summary> /// 返回不带后缀的文件名 /// </summary> /// <param name="fileName"></param> /// <returns></returns> public static string GetFirstFileName(string fileName) { return Path.GetFileNameWithoutExtension(fileName); } /// <summary> /// 获取上传目录 /// </summary> /// <returns></returns> public static string GetUploadFolder() { string rootPath = HttpContext.Current.Server.MapPath("~"); return Path.Combine(rootPath, "test"); } }
文件上传.NET默认有大小限制，像IIS限制的30M默认请求大小。如果不想修改IIS，又想突破这个大小的限制，比如上传1GB大小的文件。
这是修改Web.config即可实现。
<"1.0" encoding="utf-8"?> <!-- --> <configuration> <system.web> <compilation debug="true" targetFramework="4.0" /> <httpRuntime maxRequestLength="1073741824"/> </system.web> <> <system.webServer> <security> <requestFiltering> <> <requestLimits maxAllowedContentLength="1073741824"/> </requestFiltering> </security> </system.webServer> </configuration>
希望本文所述对大家学习javascript程序设计有所帮助。