我试图用这段代码删除servlet中的cookieCookieminIdCookie=null;for(Cookiec:req.getCookies()){if(c.getName().equals("iPlanetDirectoryPro")){minIdCookie=c;break;}}if(minIdCookie!=null){minIdCookie.setMaxAge(0);minIdCookie.setValue("");minIdCookie.setPath("/");res.addCookie(minIdCookie);}res.flushBuffer();但这不会产生任