删除cookie

Question

如何使用servlet从客户端浏览器中删除cookie？

      HttpSession ses=request.getSession(false);
        Cookie c[]=request.getCookies();

        for (int i=0; i<c.length; i++)  //Removing cookie, if present
        {
            if(c[i].getName().equals("UserID"))
            {
                System.out.println(c[i].getValue()+" is logging out --- Cookie Set to expire!");
                c[i].setMaxAge(0);
                response.addCookie(c[i]);
                break;
            }
        }

有没有其他方法可以删除它????

Answer 1

setMaxAge(0)是删除Cookie的唯一方法。最好在删除时设置这些cookie属性：

• 路径

• 域

  Cookie c[]=request.getCookies();
  
  for (int i=0; i<c.length; i++)  //Removing cookie, if present
  {
      if(c[i].getName().equals("UserID"))
      {
          System.out.println(c[i].getValue()+" is logging out --- Cookie Set to expire!");
          c[i].setMaxAge(0);
          c[i].setPath(path);
          c[i].setDomain(domain);
          response.addCookie(c[i]);
          break;
      }
  }