后台取浏览器中cookie的用法

private static View gsonView(String attributeName) {
        return gsonView(attributeName, null);
}

public static final String UTF8 = "UTF-8";

@RequestMapping(value = "/example01")
    public View example01(String cellNum, String passwd, Model model, HttpServletRequest request) {
        // Cookie取出用户名，查询此用户的相关信息
        String username = "";
        Cookie[] cookies = request.getCookies();// 前端通过Ajax映射该.do方法，这样便可以获取浏览器传过来的cookie信息
        String key = "";
        String value = "";
        for (Cookie cookie : cookies) {
            try {
                key = URLDecoder.decode(cookie.getName(), UTF8);
            } catch (UnsupportedEncodingException e) {
                LOG.error(e.getMessage());
            }
            try {
                value = URLDecoder.decode(cookie.getValue(), UTF8);
            } catch (UnsupportedEncodingException e) {
                LOG.error(e.getMessage());
            }
            if (key.equalsIgnoreCase(LOGONUSERIDLASTTIME)) {
                username = value;
                break;   //获取到想要的信息后，break此for循环
            }
        }

        long id = sendSafeCmdOpt.getNextHistoryId();//取下一个id，此id通过创建数据库sequence生成递增的id
        long iD = 3000000000L + id;
        sendSafeCmdOpt.cellAlarm(username, iD, cellNum, passwd);
        boolean result = true;
        String attributeName = "cellAlarm";
        model.addAttribute(attributeName, result);//返回true，告诉前端Ajax，后台方法调用成功。
        return gsonView(attributeName);//以gson方式返回true
    }