使用ajaxfileupload外掛程式進行Ajax Post 非同步提交多個檔案

標籤：lob   java   timeout   boolean   pre   asc   bsp   put   before   

前台代碼：

    <div>        <div>            <img src="images/pro_upload.png"  onclick="javascript:document.getElementById(‘pic1‘).click();" />            <input type="file" hidden="hidden" id="pic1" name="pic1"  />        </div>        <div>            <img src="images/pro_upload.png"  onclick="javascript:document.getElementById(‘pic2‘).click();" />            <input type="file" hidden="hidden" id="pic2" name="pic2"  />        </div>        <span id="btn">提交</span>    </div><script type="text/javascript" src="js/jquery-2.1.3.min.js"></script>    <script src="../JS/ajaxfileupload.js"></script>    <script>        document.getElementById("btn").onclick = function () {            $.ajaxFileUpload({                url: "FileTestHanlder.ashx?param=testParam",//可以攜帶多個其他參數                secureuri: false,                fileElementId: ["pic1","pic2"], //對應的檔案表單域name屬性                dataType: "TEXT",                success: function (data, status) {                    alert(data);                }            });        }    </script>

　　

後台代碼：

public class FileTestHanlder : IHttpHandler {        public void ProcessRequest (HttpContext context) {        context.Response.Write(context.Request.Files["pic1"].ContentLength + context.Request.Files["pic2"].ContentLength + context.Request["param"]);    }     public bool IsReusable {        get {            return false;        }    }}

　　

ajaxfileupload.js外掛程式代碼（有改動）：

jQuery.extend({    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] );          }      } ,    createUploadIframe: function(id, uri)    {        //create frame        var frameId = ‘jUploadFrame‘ + id;        if(window.ActiveXObject) {            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>‘);        if (typeof (fileElementId) == ‘string‘) {            fileElementId = [fileElementId];        }        for (var i in fileElementId) {            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        $(form).css(‘position‘, ‘absolute‘);        $(form).css(‘top‘, ‘-1200px‘);        $(form).css(‘left‘, ‘-1200px‘);        $(form).appendTo(‘body‘);        return form;    },    addOtherRequestsToForm: function(form,data)    {        // add extra parameter        var originalElement = $(‘<input type="hidden" name="" value="">‘);        for (var key in data) {            name = key;            value = data[key];            var cloneElement = originalElement.clone();            cloneElement.attr({‘name‘:name,‘value‘:value});            $(cloneElement).appendTo(form);        }        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);        if ( s.data ) form = jQuery.addOtherRequestsToForm(form,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‘;            }            $(form).submit();        } catch(e)        {            jQuery.handleError(s, xml, null, e);        }        if(window.attachEvent){            document.getElementById(frameId).attachEvent(‘onload‘, uploadCallback);        }        else{            document.getElementById(frameId).addEventListener(‘load‘, uploadCallback, false);        }        return {abort: function () {}};    },    uploadHttpData: function( r, type ) {        var data = !type;        data = type == "xml" || data ? r.responseXML : r.responseText;        // If the type is "script", eval it in global context        if ( type == "script" )            jQuery.globalEval( data );        // Get the JavaScript object, if JSON is used.        if ( type == "json" )        {            // If you add mimetype in your response,            // you have to delete the ‘<pre></pre>‘ tag.            // The pre tag in Chrome has attribute, so have to use regex to remove            var data = r.responseText;            var rx = new RegExp("<pre.*?>(.*?)</pre>","i");            var am = rx.exec(data);            //this is the desired data extracted            var data = (am) ? am[1] : "";    //the only submatch or empty            eval( "data = " + data );        }        // evaluate scripts within html        if ( type == "html" )            jQuery("<div>").html(data).evalScripts();        //alert($(‘param‘, data).each(function(){alert($(this).attr(‘value‘));}));        return data;    }})

　　

 

使用ajaxfileupload外掛程式進行Ajax Post 非同步提交多個檔案