在servlet中添加cookie报错

Question

1.在添加cookie的时候报错： An invalid character [13] was present in the Cookie value 在网上查了一些报错，大部分都是[32]、[44]，据说是因为cookie里面添加了“,”或者空格导致的。 登陆处理的代码是这样的： //登录处理 @RequestMapping(value = "/login/validate", method = RequestMethod.POST) public void Validate(@RequestParam("username") String username, @RequestParam("password") String password, HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse) { String md5 = MD5Util.stringToMD5(password); if (userService.verification(username, md5)) { User user = userService.selectByUsername(username); Long id = user.getId(); Long createDate = new Date().getTime(); String str = id + "=" + createDate; //加密 byte[] result = DESUtil.desCrypto(str, "12345678"); //把加密的字节数组转换成16进制 // String results = TypeUtil.bytesToHexString(result); String results = Base64.encodeBase64String(result); Cookie cookie = new Cookie("token", results); cookie.setMaxAge(60 * 60 * 24 * 7);//7天 cookie.setPath("/"); System.out.println("新生成cookie和其MaxAge：" + cookie.getName() + "-->" + cookie.getMaxAge()); httpServletResponse.addCookie(cookie); HttpSession session = httpServletRequest.getSession(); session.setAttribute("user", user); for (Cookie c : httpServletRequest.getCookies()) { System.out.println("cookes添加到response后重新获取cookies和其MaxAge：" + c.getName() + "-->" + c.getMaxAge()); } try { httpServletResponse.sendRedirect("/index.html"); // httpServletRequest.getRequestDispatcher("/index.html").forward(httpServletRequest, httpServletResponse); } catch (Exception e) { e.printStackTrace(); } } else { try { httpServletResponse.sendRedirect("no.html"); } catch (IOException e) { e.printStackTrace(); } } } 报错的地方发生在addCookie这里。

Answer 1

经过尝试，把原来的代码2注释，1 放开就可以了，哪位大佬可以解释一下啊

1. String results = TypeUtil.bytesToHexString(result);
2. //String results = Base64.encodeBase64String(result);