jquery plug-in uploadify melaksanakan muat naik kumpulan fail dengan progress bar

jquery plug-in uploadify melaksanakan muat naik kumpulan fail dengan progress bar_jquery

WBOY

Lepaskan： 2016-05-16 15:25:56

asal

1321 orang telah melayarinya

Kadang-kadang apabila projek memerlukan fungsi muat naik kumpulan fail, saya secara peribadi berpendapat bahawa muat naik adalah penyelesaian yang cepat dan mudah, saya berkongsi dengan anda untuk rujukan anda

Permulaan pemaparan:

Kod khusus adalah seperti berikut:

Dalam halaman seperti berikut

Kod halaman penuh

<%@ 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>
 <!--引入Jquery-->
 <script src="js/jquery-1.11.3.min.js"></script>
 <!--引入uploadify-->
 <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&#63;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" class="fileQueue"></div>
  <div>
   <input type="file" name="file_upload" id="file_upload" />
   <p>
    <input type="button" class="shortbutton" id="btnUpload" onclick="doUpload()" value="上传" />
        
    <input type="button" class="shortbutton" id="btnCancelUpload" onclick="$('#file_upload').uploadify('cancel')" value="取消" />
   </p>
   <div id="div_show_files"></div>
  </div>
 </form>
</body>
</html>

Salin selepas log masuk

Kod UploadHandler.ashx:

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");
 }

}

Salin selepas log masuk

Muat naik fail.NET mempunyai had saiz secara lalai, seperti saiz permintaan lalai 30M yang dihadkan oleh IIS. Jika anda tidak mahu mengubah suai IIS, tetapi ingin menembusi had saiz ini, sebagai contoh, muat naik fail 1GB.

Ini boleh dicapai dengan mengubah suai Web.config.

<&#63;xml version="1.0" encoding="utf-8"&#63;>

<!--
 -->

<configuration>

 <system.web>
  <compilation debug="true" targetFramework="4.0" />
  <httpRuntime maxRequestLength="1073741824"/>
 </system.web>

 <!--用于设置文件上传的最大允许大小(单位：bytes)-->
 <system.webServer>
  <security>
  <requestFiltering>
   <!--修改服务器允许最大长度(1GB)-->
   <requestLimits maxAllowedContentLength="1073741824"/>
  </requestFiltering>
  </security>
 </system.webServer>
 
</configuration>

Salin selepas log masuk

Saya harap artikel ini akan membantu semua orang yang mempelajari pengaturcaraan JavaScript.