今天公司项目需要文件上传,网上查了些资料及报的好多问题,今天顺便把他整理一下,以便以后使用和帮助需要帮助的人
html代码
引入js文件
jquery.min.js
ajaxfileupload.js
<table>
<tr> <td align="center">效果图</td> <td colspan="3">
<!--name属性必须加,我调试了半天没加name属性上传会出问题,没有拿到上传文件--> <input type="file" id="effectImage" name="effectImage"/> <input type="button" value="上传" onclick="uploadImageFile('effectImage','effectImageShow','/action');"/> <div id="effectImageShow" style="width:100%;"></div> </td> </tr> <tr> <td align="center">交通图</td> <td colspan="3"> <input type="file" id="trafficImage" name="trafficImage"/> <input type="button" value="上传" onclick="uploadImageFile('trafficImage','trafficImageShow','/action');"/> <div id="trafficImageShow" style="width:100%;"></div> </td> </tr> <tr> <td align="center">户型图</td> <td colspan="3"> <input type="file" id="houseImage" name="houseImage"/> <input type="button" value="上传" onclick="uploadImageFile('houseImage','houseImageShow','/action');"/> <div id="houseImageShow" style="width:100%;"></div> </td> </tr> <tr> <td align="center">实景图</td> <td colspan="3"> <input type="file" id="realImage" name="realImage"/> <input type="button" value="上传" onclick="uploadImageFile('realImage','realImageShow','/action');"/> <div id="realImageShow" style="width:100%;"></div> </td> </tr> <tr> <td align="center">样板房</td> <td colspan="3"> <input type="file" id="modelImage" name="modelImage"/> <input type="button" value="上传" onclick="uploadImageFile('modelImage','modelImageShow','/action');"/> <div id="modelImageShow" style="width:100%;"></div> </td> </tr>
</table>
js文件代码
/** * 上传图片 * @param id 上传控件id 如:<input type="file" id="trafficImage"/> id=trafficImage * @param showId 图片上传成功后显示id */ function uploadImageFile(id,showId,url) { if(!$("#"+id).val()){ alert( "请选择所要上传的文件!"); return false; } $.ajaxFileUpload({ url : url, secureuri : false, fileElementId : id, dataType : "json", success : function(data,status) { alert("上传成功!"); $("#" + showId).append('<span id="'+data.id+'"><a href="' +data.href+ '">' + data.name + '</a> <a href="javascript:void(0);" onclick="deleteUploadImageTag('' + showId +'','' + data.id + '');">删除</a> </span>'); }, error : function(data,status,e) { alert( "上传失败:" + data.msg); } }); } /** * 删除 * @param showId * @param spanId */ function deleteUploadImageTag(showId,spanId){ $('#'+ showId + ' span[id='+ spanId +']').remove(); }
ajaxfileupload.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" )
//返回的json串前加了这句代码<pre style="word-wrap: break-word; white-space: pre-wrap;">返回的Json<pre> /**-----处理上传返回的json格式 start----**/ if(data.indexOf('{') != -1){ data = data.substring(data.indexOf('{'),data.lastIndexOf('}')+1); } /**-----处理上传返回的json格式 end----**/ eval( "data = " + data ); // evaluate scripts within html if ( type == "html" ) jQuery("<div>").html(data).evalScripts(); return data; },
// jquery高版本没有此函数,将低版本的此函数复制过来解决handleError错误
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] ); } } }) (编辑:李大同)
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