cookie跨域

/*
 * 写cookie
*/
Cookie namecookie = new Cookie("name","baalwolf");

//生命周期    
namecookie.setMaxAge(60*60*24*365);
    namecookie.setDomain(".test.com");
    namecookie.setPath("/");
response.addCookie(namecookie);
/*
 * 读cookie
*/
Cookie[] cookies = request.getCookies();
if(cookies!=null)
{
    String name = "";
    for (int i = 0; i < cookies.length; i++) 
    {
       Cookie c = cookies[i];     
       if(c.getName().equalsIgnoreCase("name"))
       {
          name = c.getValue();
        }
       
  }
  out.print("this is my  name=="+name);
  
}