由于某种原因，此代码不起作用。它找不到“User.ex6a1_order_receipt”。但是，如果我手动输入 URL，我可以导航到它。我究竟做错了什么？这是完整的错误。
在此服务器上找不到请求的 URL /classpsp/User.ex6a1_order_receipt
<form action="User.ex6a1_order_receipt" method="post">
--stuff here
</form>
这是完整的代码。
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML4.01 Transitional//EN">
<html>
<%@page language="PL/SQL"%>
<%@plsql procedure="ex6a1_order_sentiment"%>
<head>
<title>Order Sentiment</title>
</head>
<body>
<div align="center"><p><h2>Sentiment for Occasion</h2>
<a href="User.ex6a1_order_sentiment">Order Sentiment</a><br>
<hr /></div>
<br>
<!-- Start Page Content -->
<p><b>Enter Order</b></p>
<form action="User.ex6a1_order_receipt" method="post">
<p>Sentiment ID: <input type=text name="sentiment_id_text" value="" size=5 maxlength=20></p>
<p>Quantity: <input type=text name="Quantity_text" value="" size=5 maxlength=20></p>
<p>Customer ID:<select name="CustomerFormBox_text">
<option value="103" selected>Sania Raina</option>
<option value="101">Tracey Bussell</option>
<option value="102">Lacy George</option>
<option value="104">Tom Peters</option>
<option value="105">Sharon Key</option></select></p>
<p>Payment Type: <input type=radio name="paymentTypeRadio" value="Check">Check
<input type=radio name="paymentTypeRadio_text" value="CC" checked>Credit Card</p>
<input type=reset name="ResetButton" value="Reset"/>
<input type=submit name="FormsButton1" value="Process Order"/>
</form>
</body>
</html>
有任何想法吗？我完全迷路了。