Cookie的写入和读取

 1. 存cookie

 

 Cookie c1 = new Cookie("CookieYtsusername",username) ;//创建一个cookies对象
  c1.setMaxAge(60*60*60*12*30) ;//设置cookies的有效期
  response.addCookie(c1);//存cookies

 2.读取cooike

 Cookie cookies[] = request.getCookies() ;

         Cookie c = null ;

         if(cookies != null){

             for(int i=0;i<cookies.length;i++)
             {

                 c = cookies[i] ;

                 if(c.getName().equals("CookieYtsusername")){

                  getCookiesYtName= c.getValue();

                   // System.out.println("getCookiesYtName-----------"+getCookiesYtName);

                 }

             }
         }