今天存储cookie用户名称时发生异常

错误信息表现：java.lang.IllegalArgumentException: RFC6265 Cookie values characters restricted to US-ASCII: 0x5f90

Cookie默认支持的编码方式是ASCII码

治疗手段： 

Cookie cookie = new Cookie(name,URLEncoder.encode(value, "UTF-8"));

2.读取cookie

String value = URLDecoder.decode(cookie.getValue(), "UTF-8");