先後臺傳輸加密，解密

URLEncoder.encode("傳智播客","UTF-8");code 取值解碼支付寶 在前臺<% = URLDecoder.decode(new String(request.getParameter("username").getBytes("ISO8859-1"),"UTF-8"),"UTF-8") %>get       <%request //商品名稱(支付寶用)支付 String

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