2 u010690143 u010690143 于 2014.07.27 12:19 提问

js的插件ajaxFileUpload的附加参数上传,后台获取到为null

前台js :

$.ajaxFileUpload({
type: 'post',
url:sysUrl+'/uploadFileServlet',
dataType: 'json',
data:{
fileId:'fileId',
fileType:'fileType',
fileEnable:'fileEnable',
ofilePath:'ofilePath',
ozfilePath:'ozfilePath'
}
,
secureuri:false,
fileElementId:'filePath',
success: function (data) {
alert("success");

               },error: function (data, status, e){
                    alert("fail");

}

后台 servlet :

            String fileId = request.getParameter("fileId");
    String fileType = request.getParameter("fileType");
    String fileEnable = request.getParameter("fileEnable");
    String ofilePath = request.getParameter("ofilePath");
    String ozfilePath = request.getParameter("ozfilePath");

打出来的所有对象都是 null , 在网上找的解决方案比如更改ajaxfileupload.js这个文件里面的几个地方,改了还是屁用没有,还浪费我下载积分。。谁遇到过这个问题

10个回答

zhouyalei123
zhouyalei123   2014.11.12 19:32

这东西用的就不是jquery的ajax,所以你这么搞,是传不到后台的,直接把参数拼在链接里吧

zjl19910605
zjl19910605   2015.05.07 11:53

我也遇到了,不知道如何获取data:{}里的参数 ?

zjl19910605
zjl19910605   2015.05.07 14:31

String fileId = request.getParameter("fileId");你调试的时候看下你的request是否是null ,我用的是Struts2 public static HttpServletRequest getRequest() {
return (HttpServletRequest) ActionContext.getContext().get(HTTP_REQUEST);
}
来过去request 的。。。。

jiexue2008888
jiexue2008888   2015.06.29 17:11

楼主,你这个问题解决了吗?我也遇到同样的问题了,求解啊

baidu_35100656
baidu_35100656   2016.05.24 10:53

url:sysUrl+'/uploadFileServlet?id='+参数,

你试试这么写,看看有没有什么问题。

qq_33967631
qq_33967631   2016.08.18 10:16

我也是醉了 一个值都没有获取到

a2002008
a2002008   2016.09.23 16:25

我也遇见这个问题,直接在data中传,后台接收不到,只能放到链接中传了。。。。

yuanbeibei123
yuanbeibei123   2017.07.18 16:18

弄了一天,各种尝试都不行,最后也是放到链接上传过来了

jc0803kevin
jc0803kevin   2017.09.21 22:58

原始的JS里面没有对data的处理需要我们自己加上去



jQuery.extend({

    createUploadForm: function(id, fileElementId, data) {    
        //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);    



        //增加文本参数的支持    
        if (data) {    
            for (var i in data) {    
                $('<input type="hidden" name="' + i + '" value="' + data[i] + '" />').appendTo(form);    
            }    
        }
        console.log('ajaxfileupload-->'+data);
        //set attributes    
        $(form).css('position', 'absolute');    
        $(form).css('top', '-1200px');    
        $(form).css('left', '-1200px');    
        $(form).appendTo('body');           
        return form;    

    },  

    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>'); 
        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 = 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" )
            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;
    }
})



u010690143
u010690143   2014.07.27 12:30

没人顶,自己先顶着,别沉了,各路大神帮帮忙,不胜感激涕零

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