jsp 清cookie

<%@ page contentType="text/html; charset=GBK" language="java"%> <% String[] cookiename = {"JSESSIONID","SECURE_AUTH_ROOT_COOKIE","SECURITY_AUTHENTICATION_COOKIE"}; for(int index = 0, len = cookiename.length; index < len; index ++) { javax.servlet.http.Cookie c = new javax.servlet.http.Cookie( cookiename[index], null); c.setMaxAge(0); c.setPath("/"); response.addCookie(c); javax.servlet.http.Cookie c2 = new javax.servlet.http.Cookie( cookiename[index], null); c2.setMaxAge(0); c2.setPath(request.getContextPath()); response.addCookie(c2); } //System.out.println("clear cookie LtpaToken"); %>