public void code() throws IOException {
HttpServletResponse response = ActionUtil.getResponse();
HttpSession session = ActionUtil.getSession();
response.setContentType("image/jpeg");
response.setHeader("Pragma", "no-cache");
response.setHeader("Cache-Control", "no-cache");
response.setDateHeader("Expires", 0);
VerifyCodeUtil verifyCode = new VerifyCodeUtil(100, 30, 5, 10);
session.setAttribute("verifyCode", verifyCode.getCode());
verifyCode.write(response.getOutputStream());
}
