百度多文件异步上传控件webuploader基本用法解析
双核浏览器下在chrome内核中使用uploadify总有302问题,也不知道如何修复,之所以喜欢360浏览器是因为帮客户控制渲染内核:
若页面需默认用极速核,增加标签:<meta name="renderer" content="webkit"/>
若页面需默认用ie兼容内核,增加标签:<meta name="renderer" content="ie-comp"/>
若页面需默认用ie标准内核,增加标签:<meta name="renderer" content="ie-stand"/>
要解决302问题也很简单,就是html5的文件上传,正好最近在ueditor里看到百度的webuploader,会自动选择flash html5,就是一个成熟的解决方案了。
先看前端,我们将最常用的操作封装为插件,asp.net中和MVC中最好使用相对于应用程序的绝对路径,自行定义全局applicationPath :var applicationPath = "@(Href("~")=="/"?"":Href("~"))";
前端插件代码:
(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);
页面引入上述js后使用:
$("#uploader").powerWebUpload({ hiddenInputId: "uploadhidden" });
html端需要一个容器和hidden
<div id="uploader"></div> <asp:HiddenField ID="hfFilePath" ClientIDMode="Static" runat="server" />
MVC版后端文件接收,即便你是asp.net 引入mvc做ajax也是可以的:
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"); } } }
一开始发首页被退下来了,现在重新编辑使内容更加完整,优化了插件代码
完整demo:
补充:
扩展自定义参数,利用uploadBeforeSend事件可以扩展参数,插件内可根据需要修改。
cookie的问题,我用微软自带的登录系统,不需要做任何特殊处理完全没有问题。
以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持狼蚁SEO。