cookie 在liunx下获取不到
代码在windows下正常运行，部署到liunx下后cookie就获取不到了，很是奇怪 

写入
Cookie cookie = new Cookie("CERLOGIN", "ABCD");
cookie.setMaxAge(3600*24);
cookie.setPath("/");
response.addCookie(cookie);

获取
Cookie[] cookies = request.getCookies();
System.out.println("遍历cookie");
Cookie cookie = null;
if(cookies != null){
  for(int i=0;i<cookies.length;i++){
if(cookies[i].getName().equals("CERLOGIN") && !Tool.nvl(cookies[i].getValue()).equals("")){
cookie = cookies[i];
  }
  }
}
if(cookie != null)
  System.out.println(cookie.getValue());

------解决方案--------------------
cookie.setPath("/");这句