圖片多上傳

前臺js

$("#imgUpload").change(function(e){  
     for(var i=0;i<e.target.files.length;i++){
             var file = e.target.files.item(i);
             if(!(/^image\/.*$/i.test(file.type)))
             {
                 continue;  
             }
             Goodsfiles.push(file)  
      }  
      ImgUpload(Goodsfiles,purl+'helpbuyUnfinished.dh?key=uploadImg");  
 })

function ImgUpload(files,url){
    var formdata = new FormData();
    if(files.length==0){
        return ;
    }
    $.showPreloader($.i18n.prop('uploading'));
    $.each(files, function(k, v){
        formdata.append("fileList"+k, v);
    });
    $.ajax({  
        url : url,  
        type : 'POST',  
        data : formdata, 
        processData : false,  
        contentType : false,  
        dataType : 'json',
        success : function(data) {  
             $.hidePreloader();
        },  
        error : function(responseStr) {  

        }  
    });  
}

後臺接收

            String uploadImg = "";
            String url  = request.getScheme()+"://"; 
            url+=request.getHeader("host");  datefolder = DateUtility.getYear() + "/" + DateUtility.getMonth() + "/" + DateUtility.getDay()+"/";

            String webParentPath = new File(request.getSession().getServletContext().getRealPath("/")).getParent();
            String realPath = webParentPath + fileFolder;
            System.out.println(realPath);
            File file = new File(realPath);
            if (!file.isDirectory()) {
                file.mkdirs();
            }

            DiskFileItemFactory fac = new DiskFileItemFactory();
            ServletFileUpload upload = new ServletFileUpload(fac);
            upload.setHeaderEncoding("UTF-8");    

            List<?> fileList  = upload.parseRequest(request);    

            Iterator<?> it = fileList.iterator();    
            while (it.hasNext()) {
                Object obit = it.next();  
                if(obit instanceof DiskFileItem){
                    DiskFileItem item = (DiskFileItem) obit;    

                    String fileName = UUID.randomUUID().toString().replace("-", "");;
                    BufferedInputStream imgin = new BufferedInputStream(item.getInputStream());
                    BufferedImage sourceImg =ImageIO.read(imgin);
                    //圖片等寬 比例壓縮 400px
                    int width = sourceImg.getWidth();  
                    int height = sourceImg.getHeight(); 
                    BufferedOutputStream outStream = new BufferedOutputStream(new FileOutputStream(new File(realPath+fileName)));
                    int h = (int) (height * 400 / width); 
                    BufferedImage image = new BufferedImage(400, h,BufferedImage.TYPE_INT_RGB );   
                    image.getGraphics().drawImage(sourceImg, 0, 0, 400, h, null);
                    JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder(outStream);  
                    encoder.encode(image);  
                    outStream.close();
                    imgin.close();
                }
            }