淘宝登录后，天猫的cookie中马上就会出现用户名等信息，淘宝登录是怎么给天猫域名设置cookie的，试了下在test2.com下使用script并不能给test1.com添加cookie
test2.com代码
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Insert title here</title>
</head>
<body>
<script type="text/javascript" src="http://test1.com:8083/springboot/test" ></script>
123
</body>
</html>
test1.com代码
@GetMapping("/springboot/test")
public String test(HttpServletRequest request, HttpServletResponse response){
Cookie token = new Cookie("token", "123");
token.setDomain("test1.com");
token.setPath("/");
token.setHttpOnly(true);
response.addCookie(token);
return "test";
}
