java - 在servlet中添加cookie报错

问题描述

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。

问题解答

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);