[求助]关于显示中文的问题

前台是：
  <form action="C.jsp" method="post">
    用户名：<input name="name" type="text"><br>
    爱好：<input name="favorite##" type="checkbox" value="跑步">跑步
    <input name="favorite##" type="checkbox" value="跳舞">跳舞
    <input name="favorite##" type="checkbox" value="体操">体操
    <input type="submit" value=" o k ">
    </form>

后台是：
            Enumeration en =  request.getParameterNames();
        request.setCharacterEncoding("gbk");
        while(en.hasMoreElements())
        {
            String name = (String)en.nextElement();
            if(name.endsWith("##"))
            {
                String favoritename[] = request.getParameterValues(name);
                for(int i = 0;i<favoritename.length;i++)
                {
                    //favoritename[i] = new String(favoritename[i].getBytes("ISO-8859-1"),"GBK");
                    
                    out.println(favoritename[i]);
                }
            }else
            {
                String strname = request.getParameter("name");
                out.print(strname);
            }
        }

用红颜色的代码转换都是显示乱码，网页已经设置成gbk了
麻烦大家了