-1
使用以下代碼確定用戶名未顯示在歡迎頁面上的原因?用戶名在歡迎頁面上不可用
String custId = (String) session.getAttribute("customerId");
String emailId = (String) session.getAttribute("emailId");
String phoneNumber = (String) session.getAttribute("phoneNumber");
<body>
<p> </p>
<p> </p>
<p> </p>
<p> </p>
<table width="70%" align="center" border="1">
<tr>
<td align="center">Welcome to Going Green !</td>
</tr>