java 上传图片同时获得图片的宽和高

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java资料

public ActionForward upload(ActionMapping mapping, ActionForm form, HttpServletRequest request,
            HttpServletResponse response) throws IOException {
        FileForm fileForm = (FileForm) form;
        FormFile file1 = fileForm.getFile1();
        HashMap<String, Object> jsonMap = new HashMap<String, Object>();
        boolean success = false;
        String message = "";
        String fileURL = "";
        int width = 0;
        int height = 0;
        if (file1 != null) {
            //上传路径
            String dir = request.getSession(true).getServletContext().getRealPath("/uploadFile");
            OutputStream fos = null;
            try {
                // 获得文件后缀
                String type = file1.getFileName().substring(file1.getFileName().lastIndexOf("."),
                        file1.getFileName().length());

                BufferedImage bi = ImageIO.read(file1.getInputStream());
//                System.out.println("Width=" + bi.getWidth());
//                System.out.println("Height=" + bi.getHeight());
                width = bi.getWidth();
                height = bi.getHeight();
                // 获取当前时间
                Calendar c = Calendar.getInstance();
                c.setTime(new Date());
                String time = "" + c.get(c.YEAR) + (c.get(c.MONTH) + 1) + c.get(c.DATE) + c.get(c.HOUR_OF_DAY)
                        + c.get(c.MINUTE) + c.get(c.SECOND);

                String newname = time + type;
                fileURL = "uploadFile/" + newname;
                fos = new FileOutputStream(dir + "/" + newname);
                fos.write(file1.getFileData(), 0, file1.getFileSize());
                fos.flush();
                success = true;
                message = "图片上传成功";
            } catch (Exception e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
                success = false;
                message = "图片上传失败";
            } finally {
                try {
                    fos.close();
                } catch (Exception e) {
                    success = false;
                    message = "图片上传失败";
                }
            }
        }
        jsonMap.put("success", success);
        jsonMap.put("message", message);
        jsonMap.put("fileURL", fileURL);
        jsonMap.put("width", width);
        jsonMap.put("height", height);
        String json = Convert.mapTojson(jsonMap).toString();
        // 设置响应内容格式
        response.setContentType("text/html;charset=utf-8");
        // 获取流
        PrintWriter out = response.getWriter();
        // 将数据以json格式打到客户端
        out.print(json);
        // 清空缓存
        out.flush();
        // 关闭流
        out.close();
        //页面跳转
        return null;
    }