@RequestMapping("getImg2")
 public void getImg2(HttpServletRequest request, HttpServletResponse response)
  throws IOException {
 FileInputStream fis = null;
 OutputStream os = null;
 try {
  fis = new FileInputStream("d:/log.png");
  os = response.getOutputStream();
  int count = 0;
  byte[] buffer = new byte[1024 * 8];
  while ((count = fis.read(buffer)) != -1) {
  os.write(buffer, 0, count);
  os.flush();
  }
 } catch (Exception e) {
  e.printStackTrace();
 } finally {
  try {
  fis.close();
  os.close();
  } catch (IOException e) {
  e.printStackTrace();
  }
 }
}