页面部分：

<link href="${root}/style/dwz/uploadify/css/uploadify.css" rel="stylesheet"    type="text/css" media="screen" /><script src="${root}/style/dwz/uploadify/scripts/jquery.uploadify.min.js"    type="text/javascript"></script><style type="text/css" media="screen">
.my-uploadify-button {
    background:none;
    border: none;
    text-shadow: none;
    border-radius:0;
}
.uploadify:hover .my-uploadify-button {
    background:none;
    border: none;
}
.fileQueue {
    width: 400px;
    height: 150px;
    overflow: auto;
    border: 1px solid #E5E5E5;
    margin-bottom: 10px;
}
</style>
<div class="pageContent" style="margin: 0 10px" layoutH="50">
    <div class="divider"></div>
    <input id="testFileInput2" type="file" name="model.information" 
        uploaderOption="{
            swf:'${root}/style/dwz/uploadify/scripts/uploadify.swf',
            uploader:'${root!}/admin/itemInfo/saveFile/${itemid}',
            formData:{PHPSESSID:'', ajax:1},
            queueID:'fileQueue',
            buttonImage:'${root}/style/dwz/uploadify/img/add.jpg',
            buttonClass:'my-uploadify-button',
            width:102,
            auto:false,
            onUploadSuccess:uploadifySuccess
        }"
    />
    <div id="fileQueue" class="fileQueue"></div>
    <input type="image" src="${root}/style/dwz/uploadify/img/upload.jpg" onclick="$('#testFileInput2').uploadify('upload', '*');"/>
    <input type="image" src="${root}/style/dwz/uploadify/img/cancel.jpg" onclick="$('#testFileInput2').uploadify('cancel', '*');"/>
    <br/><br><br><br> 
    <div id="shownode" ></div>    
</div>

<script type="text/javascript">
function uploadifySuccess(file, data, response){
      // alert('文件[' + file.name + ']上传成功了,' + response + '返回值:' + data);  
       $("#shownode").append("<p ><font style='font-size: 15px'>已成功上传["+file.name+"]文件</font></p>");  
}
</script>

后台部分:(即使是多文件上传，jfinal后台多文件获取文件 也是一个一个的获取)

public void saveFile(){       
          UploadFile uploadFile = getFile("model.information", "file/");    
          String time = new SimpleDateFormat("yyyyMMddHHmmssSSS") .format(new Date());   
          File file = uploadFile.getFile();        
          String ss=uploadFile.getFileName();      
           file.renameTo(new File(PathKit.getWebRootPath()+ "/upload/file/" + time +"."+ ss.split("\\.")[1]));  //文件重命名    
            ItemFile itemFile=getModel(ItemFile.class,"itemFile");     
           itemFile.setItemid(getParaToInt());//项目ID     
           itemFile.setUrl(time +uploadFile.getFileName());  
           itemFile.save();       
           render(DwzRender.closeCurrentAndRefresh("上传成功","./admin/itemInfo")); 
 }