class Shiro {

    byte[] KEYS = java.util.Base64.getDecoder().decode("kPH+bIxk5D2deZiIxcaaaA==");
    private final static String DELETE_ME = "deleteMe";
    AesCipherService acs = new AesCipherService();


    @GetMapping(value = "/shiro/deserialize")
    public String shiro_deserialize(HttpServletRequest req, HttpServletResponse res) {<FILL_FUNCTION_BODY>}
}

        Cookie cookie = getCookie(req, Constants.REMEMBER_ME_COOKIE);
        if (null == cookie) {
            return "No rememberMe cookie. Right?";
        }

        try {
            String rememberMe = cookie.getValue();
            byte[] b64DecodeRememberMe = java.util.Base64.getDecoder().decode(rememberMe);
            byte[] aesDecrypt = acs.decrypt(b64DecodeRememberMe, KEYS).getBytes();
            ByteArrayInputStream bytes = new ByteArrayInputStream(aesDecrypt);
            ObjectInputStream in = new ObjectInputStream(bytes);
            in.readObject();
            in.close();
        } catch (Exception e){
            if (CookieUtils.addCookie(res, "rememberMe", DELETE_ME)){
                log.error(e.getMessage());
                return "RememberMe cookie decrypt error. Set deleteMe cookie success.";
            }
        }

        return "Shiro deserialize";
    
<no_super_class>