jsp中使用Cookie的疑问?

Cookie c = new Cookie("test","1");	

response.addCookie(c);

Cookie c1 = new Cookie("test2","1");	

response.addCookie(c1);

Cookie c3 = new Cookie("test","0");	

response.addCookie(c3);

c1死活是写不进去,c3更是不能覆盖原来test的值

当然把 c去掉 就是1 2行，c1才生效，请问有没有办法在同一个页面中增加多个Cookie?