【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