记录一下有关Cookie的问题：遇到 Control character in cookie value or attribute

 创建Cookie对象遇到的问题:

        1.创建Cookie对象语句,并添加到response中

Cookie c = new Cookie(String name,String value);
response.addCookie(c);

运行时候遇到问题:

 java.lang.IllegalArgumentException: Control character in cookie value or attribute.

解决办法：在创建Cookie对象时候指定编码 

URLEncoder.encode(value, "UTF-8")

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

         2.在获取Cookie对象中的name和value的时候

Cookie[] cs = request.getCookies();

URLDecoder.decode(getName(), "utf-8");

URLDecoder.decode(c.getValue(), "utf-8");