ajaxFileupload.js
jQuery.extend({
createUploadIframe: function(id, uri)
{
//create frame
var frameId = 'jUploadFrame' + id;
if(window.ActiveXObject) {
if(jQuery.browser.version=="9.0" || jQuery.browser.version=="10.0"){
var io = document.createElement('iframe');
io.id = frameId;
io.name = frameId;
}else if(jQuery.browser.version=="6.0" || jQuery.browser.version=="7.0" || jQuery.browser.version=="8.0"){
var io = document.createElement('');
if(typeof uri== 'boolean'){
io.src = 'javascript:false';
}
else if(typeof uri== 'string'){
io.src = uri;
}
}
}
else {
var io = document.createElement('iframe');
io.id = frameId;
io.name = frameId;
}
io.style.position = 'absolute';
io.style.top = '-1000px';
io.style.left = '-1000px';
document.body.appendChild(io);
return io;
},
createUploadForm: function(id, fileElementId,data)
{
//create form
var formId = 'jUploadForm' + id;
var fileId = 'jUploadFile' + id;
var form = $('');
var oldElement = $('#' + fileElementId);
if(typeof(fileElementId) == 'string'){
fileElementId = [fileElementId];
}
for(var i in fileElementId){
if(!fileElementId.hasOwnProperty(i) ){
continue;
}
var oldElement = jQuery('#' + fileElementId[i]);
var newElement = jQuery(oldElement).clone();
jQuery(oldElement).attr('id', fileId);
jQuery(oldElement).before(newElement);
jQuery(oldElement).appendTo(form);
}
//set attributes
if (data) {
for ( var i in data) {
$('').appendTo(form);
}
}
$(form).css('position', 'absolute');
$(form).css('top', '-1200px');
$(form).css('left', '-1200px');
$(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,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", [xml, s] );
} else
jQuery.handleError(s, xml, status);
} catch(e)
{
status = "error";
jQuery.handleError(s, xml, status, e);
}
// The request was completed
if( s.global )
jQuery.event.trigger( "ajaxComplete", [xml, 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
{
$(io).remove();
$(form).remove();
} catch(e)
{
jQuery.handleError(s, xml, null, 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 io = $('#' + frameId);
var form = $('#' + formId);
$(form).attr('action', s.url);
$(form).attr('method', 'POST');
$(form).attr('target', frameId);
if(form.encoding)
{
form.encoding = 'multipart/form-data';
}
else
{
form.enctype = 'multipart/form-data';
}
$(form).submit();
} catch(e)
{
jQuery.handleError(s, xml, null, e);
}
if(window.attachEvent){
document.getElementById(frameId).attachEvent('onload', uploadCallback);
}
else{
document.getElementById(frameId).addEventListener('load', uploadCallback, false);
}
return {abort: function () {}};
},
uploadHttpData: function( r, type ) {
var data = !type;
data = type == "xml" || data ? r.responseXML : r.responseText;
// If the type is "script", eval it in global context
if ( type == "script" )
jQuery.globalEval( data );
// Get the JavaScript object, if JSON is used.
if ( type == "json" ){
////////////以下为新增代码///////////////
data = r.responseText;
var start = data.indexOf(">");
if(start != -1) {
var end = data.indexOf("<", start + 1);
if(end != -1) {
data = data.substring(start + 1, end);
}
}
///////////以上为新增代码///////////////
eval( "data = " + data );
// evaluate scripts within html
}
if ( type == "html" )
jQuery("").html(data).evalScripts();
//alert($('param', data).each(function(){alert($(this).attr('value'));}));
return data;
},
handleError: function( s, xhr, status, e ) {
// If a local callback was specified, fire it
if ( s.error ) {
s.error.call( s.context || s, xhr, status, e );
}
// Fire the global callback
if ( s.global ) {
(s.context ? jQuery(s.context) : jQuery.event).trigger( "ajaxError", [xhr, s, e] );
}
}
})
demo
/**
-
作者：谭学锋
-
版权：西安优步
-
全局的删除文件函数
-
版本：1.0
-
日期：2018.8.31 10:22
-
删除附件
-
@param e
-
@param entityId
-
@param buttonId
*/
function delFjTxf(e,entityId,buttonId){
$(e).parent().parent().remove();
$("#"+buttonId).show();
nui.get(entityId).setValue("");
}
/**
-
作者：谭学锋
-
版权：西安优步
-
文件上传（单个文件）的通用显示和删除函数
-
版本：1.0
-
日期：2018.8.31 10:28
-
@param lcm 流程名
-
@param entityId 实体属性id
-
@param entityOriId 文件名属性id
-
@param buttonId 按钮id
-
@param fileId 文件域id
-
@param showId 显示id
-
@param fileNameCheckFn 文件名检查函数，参见源码中的 fileNameCheckFn,默认（undefined）全部类型，“image” ：图片。
-
@param noDelete true:没有删除按钮，也没有上传按钮。默认false.
-
@param notify 回调 function(){ }
*/
function uploadInitial(lcm,entityId,entityOriId,buttonId,fileId,showId,fileNameCheckFn,noDelete,notify){
noDelete=noDelete||false;
if( fileNameCheckFn==“image”){
fileNameCheckFn=function(feid){
var img = document.getElementById(feid);
return /.(jpg|png|gif|bmp)$/.test(img.value)?true:(function() {
nui.alert(‘图片格式仅支持jpg、png、gif、bmp格式，且区分大小写。’);
return false;
})();
}
}else if( fileNameCheckFn== "imageAndPdf"){
fileNameCheckFn=function(feid){
var img = document.getElementById(feid);
return /.(jpg|png|gif|bmp|pdf)$/.test(img.value)?true:(function() {
nui.alert('图片格式仅支持jpg、png、gif、bmp、pdf格式，且区分大小写。');
return false;
})();
}
}else if( fileNameCheckFn== undefined){
fileNameCheckFn=function(){
return true;
}
}
function bindChange(){
$("#"+fileId).change(function(e){
ajax_upload(fileId, function(data) {
data.url=data.url.replace(/\\\\/g,'/');
data.url=data.url.replace(/\\/g,'/');
data.url=basePath+"/"+data.url;
var fjShow='';
$('#'+showId).html(fjShow );
nui.get(entityId).setValue(data.url);
nui.get(entityOriId).setValue(data.originalname);
if(notify){
notify();
}
$("#"+buttonId).hide();
});
});
}
bindChange();
function ajax_upload(feid, callback) {
if (fileNameCheckFn(feid)) {
$.ajaxFileUpload({
fileElementId: feid,
url: 'upload.jsp?lcm='+lcm,
type: 'post',
dataType: 'json', //服务器返回的数据类型。可以为xml,script,json,html。如果不填写，jQuery会自动判断。
secureuri: false,
async : true,
success: function(data) {
if (callback) callback.call(this, data);
$("#"+fileId).val("");
bindChange();
},
error: function(data, status, e) {
$("#"+fileId).val("");
bindChange();
}
});
}
}
//点击传递
$("#"+buttonId).click(function(){
$("#"+fileId).val("");
$("#"+fileId).trigger("click");
});
if($("#"+entityId).val()!="" && $("#"+entityId).val()!="null"){
$("#"+buttonId).hide();
var deleteHtml=' '+
' '+
' ';
if(noDelete){
deleteHtml="";
}
var fjShow=''+
' '+
' '+
' '+
' '+
deleteHtml
+' '+$("#"+entityOriId).val()+
' '+
'';
$('#'+showId).html(fjShow );
}
if(noDelete){
$("#"+buttonId).hide();
}
}