图片多上传

前台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) {          }      });  }

后台接收

            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);                    //图片等宽 比例压缩 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();                }            }