前后台传输加密，解密

URLEncoder.encode("传智播客","UTF-8");

取值解码

在前台<% = URLDecoder.decode(new String(request.getParameter("username").getBytes("ISO8859-1"),"UTF-8"),"UTF-8") %>

<%

//商品名称(支付宝用)

String order_Name = request.getParameter("order_Name");

//商品名称

if(order_Name!=null){        

    order_Name=new String(order_Name.getBytes("ISO8859_1"),"UTF-8");

}

%>