百度多文件异步上传控件webuploader基本用法解析

(function ($, window) {
　　　　var applicationPath = window.applicationPath === "" "" : window.applicationPath || "../..";
　　　　function S4() {
　　　　　　return (((1 + Math.random()) * 0x10000) | 0).toString(16).substring(1);
　　　　}

 function initWebUpload(item, options) {
 
  if (!WebUploader.Uploader.support()) {
   var error = "上传控件不支持您的浏览器！请尝试升级flash版本或者使用Chrome引擎的浏览器。<a target='_blank' href='http://se.360.cn'>下载页面</a>";
   if (window.console) {
    window.console.log(error);
   }
   $(item).text(error);
   return;
  }
 
  var defaults = {
   hiddenInputId: "uploadifyHiddenInputId", // input hidden id
   onAllComplete: function (event) { }, // 当所有file都上传后执行的回调函数
   onComplete: function (event) { },// 每上传一个file的回调函数
   innerOptions: {},
   fileNumLimit: undefined,
   fileSizeLimit: undefined,
   fileSingleSizeLimit: undefined,
   PostbackHold: false
  };
 
  var opts = $.extend({}, defaults, options);
  var hdFileData = $("#" + opts.hiddenInputId);
 
  var target = $(item);//容器
  var pickerid = "";
  if (typeof guidGenerator36 != 'undefined')//给一个唯一ID
   pickerid = guidGenerator36();
  else
   pickerid = (((1 + Math.random()) * 0x10000) | 0).toString(16).substring(1);
 
  var uploaderStrdiv = '<div class="webuploader">' +
   '<div id="thelist" class="uploader-list"></div>' +
   '<div class="btns">' +
   '<div id="' + pickerid + '">选择文件</div>' +
   //'<a id="ctlBtn" class="btn btn-default">开始上传</a>' +
   '</div>' +
  '</div>';
  target.append(uploaderStrdiv);
 
  var $list = target.find('#thelist'),
    $btn = target.find('#ctlBtn'),//这个留着，以便随时切换是否要手动上传
    state = 'pending',
    uploader;
 
  var jsonData = {
   fileList: []
  };
 
  var webuploaderoptions = $.extend({
 
   // swf文件路径
   swf: applicationPath + '/Scripts/lib/webuploader/Uploader.swf',
 
   // 文件接收服务端。
   server: applicationPath + '/MvcPages/WebUploader/Process',
 
   // 选择文件的按钮。可选。
   // 内部根据当前运行是创建，可能是input元素，也可能是flash.
   pick: '#' + pickerid,
 
   // 不压缩image, 默认如果是jpeg，文件上传前会压缩一把再上传！
   resize: false,
   fileNumLimit: opts.fileNumLimit,
   fileSizeLimit: opts.fileSizeLimit,
   fileSingleSizeLimit: opts.fileSingleSizeLimit
  },
  opts.innerOptions);
  var uploader = WebUploader.create(webuploaderoptions);
 
　　　　　　//回发时还原hiddenfiled的保持数据
　　　　　　var fileDataStr = hdFileData.val();
　　　　　　if (fileDataStr && opts.PostbackHold) {
　　　　　　　　jsonData = JSON.parse(fileDataStr);
　　　　　　$.each(jsonData.fileList, function (index, fileData) {
　　　　　　var newid = S4();
　　　　　　fileData.queueId = newid;
　　　　　　$list.append('<div id="' + newid + '" class="item">' +
　　　　　　　　'<div class="info">' + fileData.name + '</div>' +
　　　　　　　　'<div class="state">已上传</div>' +
　　　　　　　　'<div class="del"></div>' +
　　　　　　　　'</div>');
　　　　　　});
　　　　　　hdFileData.val(JSON.stringify(jsonData));
　　　　　　}

 


  uploader.on('fileQueued', function (file) {//队列事件
   $list.append('<div id="' + file.id + '" class="item">' +
    '<div class="info">' + file.name + '</div>' +
    '<div class="state">等待上传...</div>' +
    '<div class="del"></div>' +
   '</div>');
  });
  uploader.on('uploadProgress', function (file, percentage) {//进度条事件
   var $li = target.find('#' + file.id),
    $percent = $li.find('.progress .bar');
 
   // 避免重复创建
   if (!$percent.length) {
    $percent = $('<span class="progress">' +
     '<span class="percentage"><span class="text"></span>' +
     '<span class="bar" role="progressbar" style="width: 0%">' +
     '</span></span>' +
    '</span>').appendTo($li).find('.bar');
   }
 
   $li.find('div.state').text('上传中');
   $li.find(".text").text(Math.round(percentage * 100) + '%');
   $percent.css('width', percentage * 100 + '%');
  });
  uploader.on('uploadSuccess', function (file, response) {//上传成功事件
   target.find('#' + file.id).find('div.state').text('已上传');
   var fileEvent = {
    queueId: file.id,
    name: file.name,
    size: file.size,
    type: file.type,
    filePath: response.filePath
   };
   jsonData.fileList.push(fileEvent)
   opts.onComplete(fileEvent);
 
  });
 
  uploader.on('uploadError', function (file) {
   target.find('#' + file.id).find('div.state').text('上传出错');
  });
 
  uploader.on('uploadComplete', function (file) {//全部完成事件
   target.find('#' + file.id).find('.progress').fadeOut();
   var fp = $("#" + opts.hiddenInputId);
   fp.val(JSON.stringify(jsonData));
   opts.onAllComplete(jsonData.fileList);
  });
 
  uploader.on('fileQueued', function (file) {
   uploader.upload();
  });
 
  uploader.on('filesQueued', function (file) {
   uploader.upload();
  });
 
  uploader.on('all', function (type) {
   if (type === 'startUpload') {
    state = 'uploading';
   } else if (type === 'stopUpload') {
    state = 'paused';
   } else if (type === 'uploadFinished') {
    state = 'done';
   }
 
   if (state === 'uploading') {
    $btn.text('暂停上传');
   } else {
    $btn.text('开始上传');
   }
  });
 
  $btn.on('click', function () {
   if (state === 'uploading') {
    uploader.stop();
   } else {
    uploader.upload();
   }
  });
  //删除
  $list.on("click", ".del", function () {
   var $ele = $(this);
   var id = $ele.parent().attr("id");
   var deletefile = {};
   $.each(jsonData.fileList, function (index, item) {
    if (item && item.queueId === id) {
　　　　　　　　　　　　　　uploader.removeFile(uploader.getFile(id));//不要遗漏
     deletefile = jsonData.fileList.splice(index, 1)[0];
     $("#" + opts.hiddenInputId).val(JSON.stringify(jsonData));
     $.post(applicationi + "/Webploader/Delete", { 'filepathname': deletefile.filePath }, function (returndata) {
      $ele.parent().remove();
     });
     return;
    }
   });
  });
 
 }
 
 
 $.fn.powerWebUpload = function (options) {
  var ele = this;
  if (typeof PowerJs != 'undefined') {
   $.lazyLoad(applicationPath + "/Scripts/lib/webuploader/webuploader.css", function () { }, 'css');
   $.lazyLoad(applicationPath + "/Scripts/lib/webuploader/webuploader.min.js", function () {
    initWebUpload(ele, options);
   });
  }
  else {
   initWebUpload(ele, options);
  }
 }
})(jQuery, window);

<div id="uploader"></div>
<asp:HiddenField ID="hfFilePath" ClientIDMode="Static" runat="server" /> 

using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Web;
using System.Web.Mvc;
public class WebUploaderController : BaseController
 {
  public ActionResult Process(string id, string name, string type, string lastModifiedDate, int size, HttpPostedFileBase file)
  {
   string filePathName = string.Empty;string localPath = Path.Combine(HttpRuntime.AppDomainAppPath, "Upload\\Document");
   if (Request.Files.Count == 0)
   {
    return Json(new { jsonrpc = 2.0, error = new { code = 102, message = "保存失败" }, id = "id" });
   }
   try
   {
    filePathName = //自己在这里处理文件保存并返回需要保存到hidden的数据，文件在file或者Request.Files[0]
   }
   catch (Exception)
   {
    return Json(new { jsonrpc = 2.0, error = new { code = 103, message = "保存失败" }, id = "id" });
   }

   return Json(new
   {
    jsonrpc = "2.0",
    id = "id",
    filePath = urlPath + "/" + filePathName
   });
  }

　　　　 static string urlPath = "../../Upload/Document";

 
  public ActionResult Delete(string filePathName)
  {
   if (string.IsNullOrEmpty(filePathName))
   {
    return Content("no");
   }
   //为了安全 检查一下路径 不够严谨 自行更具业务做更加细致的判断
   if (!filePathName.StartsWith(urlPath) ||
    filePathName.Substring(6, filePathName.Length - 7).Contains("../"))
   {
    return Content("no!");
   }
   string localFilePathName = this.Server.MapPath(filePathName);
 
   try
   {
    bool b = UploadifyManager.DeleteAttachment(localFilePathName);
    if (!b) throw new Exception("删除文件失败");
 
    return Content("ok");
   }
   catch
   {
    return Content("no");
   }
  }
 }