【广州校区】+【原创】cookie的编码和解码 - 黑马程序员技术交流社区

@WebServlet(name = "TimeServlet", urlPatterns = "/TimeServlet")
public class  TimeServlet  extends HttpServlet {
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
      doGet(request, response);
}

protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
      String day = new SimpleDateFormat("yyyy年MM月dd日 ;,= hh时mm分ss秒").format(new Date());
      String encode = URLEncoder.encode(day, "utf-8");//对非英文字符编码
      Cookie c = new Cookie("time",encode);//创建cookie
      c.setMaxAge(60*60*24);//设置存活时间一天
      response.addCookie(c);//将cookie添加到response对象
      //第二次访问获取cookie
      Cookie[] cookies = request.getCookies();
      if(cookies!=null){
         for (Cookie cc:cookies){
            if("time".equals(cc.getName())){
                  System.out.println(cc.getValue());
                  //解码
                  String decode = URLDecoder.decode(cc.getValue(), "utf-8");
                  response.setContentType("text/html;charset=utf-8");
                  response.getWriter().write(decode);
            }
         }
      }
}
}