spring mvc 返回图片的请求

@RequestMapping(value = "/image/get")
public void getImage(HttpServletRequest request,HttpServletResponse response) {
    FileInputStream fis = null;
    response.setContentType("image/gif");
    try {
        OutputStream out = response.getOutputStream();
        File file = new File("D:"+File.separator+"timg.jpg");
        fis = new FileInputStream(file);
        byte[] b = new byte[fis.available()];
        fis.read(b);
        out.write(b);
        out.flush();
    } catch (Exception e) {
         e.printStackTrace();
    } finally {
        if (fis != null) {
            try {
               fis.close();
            } catch (IOException e) {
	        e.printStackTrace();
	    }   
          }
    }
}