cookie的一些基本操作

 

  //写cookie   
   Cookie usernamecookie = new Cookie("username",username);
   Cookie passwordcookie = new Cookie("password",password);
   
   //生命周期    
   usernamecookie.setMaxAge(60*60*24*365);
   passwordcookie.setMaxAge(60*60*24*365);
       
   response.addCookie(usernamecookie);
   response.addCookie(passwordcookie);

   //读cookie

     for (int i = 0; i < cookies.length; i++) 
     ...{
        Cookie c = cookies[i];     
        if(c.getName().equalsIgnoreCase("username"))
        ...{
           username = c.getValue();
         }
         else if(c.getName().equalsIgnoreCase("password"))
         ...{
            password = c.getValue();
         }   
     } 

//删除cookie

    Cookie[]   cookies=request.getCookies();      
    if(cookies!=null)   
      ...{   
          for(int   i=0;i<cookies.length;i++)   
          ...{   
              String   tempuid_1=cookies[i].getName();   
   
              if(tempuid_1.equals("username"))   
              ...{   
                  cookies[i].setMaxAge(0);   
                  response.addCookie(cookies[i]);   
              }   
              if(tempuid_1.equals("password"))   
              ...{   
                  cookies[i].setMaxAge(0);   
                  response.addCookie(cookies[i]); 
              }   
            }   
        }