ajaxfileupload上传文件问题

Bertha 。 2022-05-10 06:46 261阅读 0赞

一、ajaxfileupload在新版的jQuery中会报jQuery.handleError is not a function

解决办法：

在Ajaxfileupload.js中追加方法：

handleError: function (s, xhr, status, e) {
        if (s.error) {
            s.error.call(s.context || s, xhr, status, e);
        }
        if (s.global) {
            (s.context ? jQuery(s.context) : jQuery.event).trigger("ajaxError", [xhr, s, e]);
        }
    }

二、ajaxFileUpload上传文件返回json无法解析

解决办法：

在uploadHttpData中修改type == "json"

if ( type == "json" ){
        data = jQuery.parseJSON(jQuery(data).text());
    }

ajaxFileUpload 全部代码为：

jQuery.extend({
    
        createUploadIframe: function(id, uri)
        {
            //create frame
            var frameId = 'jUploadFrame' + id;
    
            if(window.ActiveXObject) {
                if($.support.leadingWhitespace){
                    var io = document.createElement('iframe');
                    io.id = frameId;
                    io.name = frameId;
                }else{
                    var io = document.createElement('<iframe id="' + frameId + '" name="' + frameId + '" />');
                    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)
        {
            //create form
            var formId = 'jUploadForm' + id;
            var fileId = 'jUploadFile' + id;
            var form = $('<form  action="" method="POST" name="' + formId + '" id="' + formId + '" enctype="multipart/form-data"></form>');
            var oldElement = $('#' + fileElementId);
            var newElement = $(oldElement).clone();
            $(oldElement).attr('id', fileId);
            $(oldElement).before(newElement);
            $(oldElement).appendTo(form);
            //set attributes
            $(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 = s.fileElementId;
            var form = jQuery.createUploadForm(id, s.fileElementId);
            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" ){
                data = jQuery.parseJSON(jQuery(data).text());
                // eval( "data = " + data );
            }
            // evaluate scripts within html
            if ( type == "html" )
                jQuery("<div>").html(data).evalScripts();
            //alert($('param', data).each(function(){alert($(this).attr('value'));}));
            return data;
        },
        handleError: function (s, xhr, status, e) {
            if (s.error) {
                s.error.call(s.context || s, xhr, status, e);
            }
            if (s.global) {
                (s.context ? jQuery(s.context) : jQuery.event).trigger("ajaxError", [xhr, s, e]);
            }
        },
    })

三、在上传文件时，不能传参问题

1、修改createUploadForm
    
    （1）修改createUploadForm: function(id, fileElementId, data)
    
    （2）在$(oldElement).appendTo(form);下添加代码
    if (data) {
                for (var i in data) {
                    $('<input type="hidden" name="' + i + '" value="' + data[i] + '" />').appendTo(form);
                }
            }
    
    2、修改ajaxFileUpload
    
    （1）var form = jQuery.createUploadForm(id, s.fileElementId, s.data);