details.js中cookie的字符问题？？

点开商品后报错

 Servlet.service() for servlet [jsp] in context with path [/ServletCartDemo] threw exception [java.lang.IllegalArgumentException: An invalid character [44] was present in the Cookie value] with root cause

java.lang.IllegalArgumentException: An invalid character [44] was present in the Cookie value

然后上网查是说cookie内容中不能包含逗号“，”，

我就将逗号“，”改成了“#”，但是还是会报错

请问怎么解决？