ajaxupload.js是基于jquery开发的一块上传文件的方法,算是轻量级的插件,比较实用;
具体的还是看代码操作:
html部分
<!DOCTYPE HTML> <html> <head> <Meta charset="UTF-8"> <title> 上传多张图片</title> <style type="text/css"> .img-div{ border: 1px solid #ddd; line-height: 1; margin-left: 5px; overflow: hidden; padding:10px; } .file-wait-bar{ display:none; padding:0 20px; } </style> </head> <body> <link href="/lib/font-awesome_4.4.0/css/font-awesome.min.css" rel="stylesheet"> <script type="text/javascript" src="/lib/bootstrap_3.3.5/js/jquery.min.js"></script> <script type="text/javascript" src="/lib/jquery_1.10/ajaxfileupload.js"></script> <div class="img-div"> 在此处上传:<input type="file" id="hqmsRelationupfile" name="hqmsRelationupfile" /> <input type="button" class="" value="导入"> <span class="file-wait-bar"><i class="fa fa-spinner fa-spin"></i></span> </div> <div> 在此处下载: <ul id="ultestid"> <!-- <li><a target="_blank" href="/resources/fileuppackage/sunnytest/epr.newfw.episodelistuvpanel.csp.txt" download="test.txt">下载某个文件</a></li> --> </ul> </div> <div> </div> </body> <script type="text/javascript" src="/scripts/test.js"> </script> </html>
对应的test.js
function dealfileurl(filename){ var p=filename.split("\\"); var namestr=p[p.length-1]; //$("ultestid").append("<li><b>nestr</b></li>"); //下载功能 var html='<li>'; html+='<a target="_blank" href="/resources/fileuppackage/sunnytest/'+namestr+'" download="test.txt">'; html+='下载'+namestr; html+='</a></li>'; $("#ultestid").append(html); return 1 } $(function () { $(":button").click(function () { if ($("#hqmsRelationupfile").val().length > 0) { var fileurl=$("#hqmsRelationupfile").val(); $("span.file-wait-bar").show(); ajaxFileUpload(fileurl); } else { alert("请选择图片"); } }); }); function ajaxFileUpload(filenamerul) { $.ajaxFileUpload ( { url: '/csp/i-hqms/web.Biz.Proxy.sunnyfileup.cls',//用于文件上传的服务器端请求地址 type: 'post',data: { Id: 'upfile',name: 'filetest' },//可以附带一些需要的参数,此参数非常严谨,写错一个引号都不行 secureuri: false,//一般设置为false fileElementId: 'hqmsRelationupfile',//文件上传空间的id属性 <input type="file" id="file" name="file" /> dataType: 'json',//返回值类型 一般设置为json success: function (data,status) //服务器成功响应处理函数 { dealfileurl(filenamerul); //alert("上传"+data.outstr+"成功"); },complete:function(){ $(".file-wait-bar").hide(); },error: function (data,status,e)//服务器响应失败处理函数 { alert("sunny 错误信息:"+e); } } ) return false; }
ajaxupload.js
jQuery.extend({ createUploadIframe: function(id,uri) { //create frame var frameId = 'jUploadFrame' + id; var iframeHtml = '<iframe id="' + frameId + '" name="' + frameId + '" style="position:absolute; top:-9999px; left:-9999px"'; if(window.ActiveXObject) { if(typeof uri== 'boolean'){ iframeHtml += ' src="' + 'javascript:false' + '"'; } else if(typeof uri== 'string'){ iframeHtml += ' src="' + uri + '"'; } } iframeHtml += ' />'; jQuery(iframeHtml).appendTo(document.body); return jQuery('#' + frameId).get(0); },createUploadForm: function(id,fileElementId,data) { //create form var formId = 'jUploadForm' + id; var fileId = 'jUploadFile' + id; var form = jQuery('<form action="" method="POST" name="' + formId + '" id="' + formId + '" enctype="multipart/form-data"></form>'); if(data) { for(var i in data) { jQuery('<input type="hidden" name="' + i + '" value="' + data[i] + '" />').appendTo(form); } } var oldElement = jQuery('#' + fileElementId); var newElement = jQuery(oldElement).clone(); jQuery(oldElement).attr('id',fileId); jQuery(oldElement).before(newElement); jQuery(oldElement).appendTo(form); //set attributes jQuery(form).css('position','absolute'); jQuery(form).css('top','-1200px'); jQuery(form).css('left','-1200px'); jQuery(form).appendTo('body'); return form; },ajaxFileUpload: function(s) { // TODO introduce global settings,allowing the client to modify them for all requests,not only timeout s = jQuery.extend({},jQuery.ajaxSettings,s); var id = new Date().getTime() var form = jQuery.createUploadForm(id,s.fileElementId,(typeof(s.data)=='undefined'?false:s.data)); var io = jQuery.createUploadIframe(id,s.secureuri); var frameId = 'jUploadFrame' + id; var formId = 'jUploadForm' + id; // Watch for a new set of requests if ( s.global && ! jQuery.active++ ) { jQuery.event.trigger( "ajaxStart" ); } var requestDone = false; // Create the request object var xml = {} if ( s.global ) jQuery.event.trigger("ajaxSend",[xml,s]); // Wait for a response to come back var uploadCallback = function(isTimeout) { var io = document.getElementById(frameId); try { if(io.contentWindow) { xml.responseText = io.contentWindow.document.body?io.contentWindow.document.body.innerHTML:null; xml.responseXML = io.contentWindow.document.XMLDocument?io.contentWindow.document.XMLDocument:io.contentWindow.document; }else if(io.contentDocument) { xml.responseText = io.contentDocument.document.body?io.contentDocument.document.body.innerHTML:null; xml.responseXML = io.contentDocument.document.XMLDocument?io.contentDocument.document.XMLDocument:io.contentDocument.document; } }catch(e) { jQuery.handleError(s,xml,null,e); } if ( xml || isTimeout == "timeout") { requestDone = true; var status; try { status = isTimeout != "timeout" ? "success" : "error"; // Make sure that the request was successful or notmodified if ( status != "error" ) { // process the data (runs the xml through httpData regardless of callback) var data = jQuery.uploadHttpData( xml,s.dataType ); // If a local callback was specified,fire it and pass it the data if ( s.success ) s.success( data,status ); // Fire the global callback if( s.global ) jQuery.event.trigger( "ajaxSuccess",s] ); } else jQuery.handleError(s,status); } catch(e) { status = "error"; jQuery.handleError(s,e); } // The request was completed if( s.global ) jQuery.event.trigger( "ajaxComplete",s] ); // Handle the global AJAX counter if ( s.global && ! --jQuery.active ) jQuery.event.trigger( "ajaxStop" ); // Process result if ( s.complete ) s.complete(xml,status); jQuery(io).unbind() setTimeout(function() { try { jQuery(io).remove(); jQuery(form).remove(); } catch(e) { jQuery.handleError(s,e); } },100) xml = null } } // Timeout checker if ( s.timeout > 0 ) { setTimeout(function(){ // Check to see if the request is still happening if( !requestDone ) uploadCallback( "timeout" ); },s.timeout); } try { var form = jQuery('#' + formId); jQuery(form).attr('action',s.url); jQuery(form).attr('method','POST'); jQuery(form).attr('target',frameId); if(form.encoding) { jQuery(form).attr('encoding','multipart/form-data'); } else { jQuery(form).attr('enctype','multipart/form-data'); } jQuery(form).submit(); } catch(e) { jQuery.handleError(s,e); } jQuery('#' + frameId).load(uploadCallback ); return {abort: function () {}}; },uploadHttpData: function( r,type ) { var data = !type; data = type == "xml" || data ? r.responseXML : r.responseText; // If the type is "script",eval it in global context if ( type == "script" ) jQuery.globalEval( data ); // Get the JavaScript object,if JSON is used. if ( type == "json" ) eval( "data = " + data ); // evaluate scripts within html if ( type == "html" ) jQuery("<div>").html(data).evalScripts(); return data; },handleError: function( s,xhr,e ) { // If a local callback was specified,fire it if ( s.error ) { s.error.call( s.context || s,e ); } // Fire the global callback if ( s.global ) { (s.context ? jQuery(s.context) : jQuery.event).trigger( "ajaxError",[xhr,s,e] ); } } })