【Cookie】java.lang.IllegalArgumentException An invalid character [32] was present in the Cookie value

创建时间：6.30

java.lang.IllegalArgumentException: An invalid character [32] was present in the Cookie value

报错原因：

Tomcat 8.5版本，在cookie值中不能使用空格。

代码：

protected void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        
        Date date = new Date();
        SimpleDateFormat format=new SimpleDateFormat("yyyy-MM-dd hh:mm:ss");
        String currentTime = format.format(date);
         
        Cookie accessTime = new Cookie("lastAccessTime",currentTime);
        accessTime.setMaxAge(60*50);
        response.addCookie(accessTime);

        String lastAccessTime=null;
        Cookie[] cookies = request.getCookies();
        if (cookies != null) {
            for(Cookie cookie:cookies) {
                if(cookie.getName().equals("laseAccessTime")) {
                    lastAccessTime=cookie.getValue();
                }
            }
        }
        
        if(lastAccessTime==null) {
            response.setContentType("text/html;charset=UTF-8");
            response.getWriter().write("您是第一次访问");
            System.out.println(lastAccessTime);
        }
        else {
            response.getWriter().write("您上次访问的时间是："+lastAccessTime);
        }
        
    }

 

问题出在这里：日期格式有空格，换成/即可