相当棘手的问题

<%@ page contentType="text/html;charset=GB2312" %>
<%@ page import="java.sql.*" %>
<html>
<head>
<title>客房管理系统</title>
</head>
<body>
<table width="80%"  border="1" cellspacing="0" cellpadding="0" align="center">
  <tr>
    <td width="42%" align="center" valign="middle"><h1 class="style4">福星旅馆</h1></td>
    <td width="58%"><img src="Image/ad_1.jpg" width="600" height="170" align="middle" /></td>
  </tr>
  <tr>
    <td colspan="2"><table width="100%"  border="0" cellspacing="0" cellpadding="0">
      <tr align="center">
        <td>首页</td>
        <td>客房简介</td>
        <td><a href="infomation.html">信息公告</a></td>
        <td><a href="manage.jsp">客房管理</a></td>
        <td><a href="login.jsp">管理员登陆</a></td>
      </tr>
    </table></td>
  </tr>
  <tr>
  <td>
<form align="center" action="" method="post">
<font size="4" color="#0066FF">空房查询</font>
<hr>
 <table>
<tr>
<td>查询方式：</td>
<td><select name="house_type">
<option value="A" selected>高档
<option value="B">中档
<option value="C">普通   
</select>
</td>
</tr>
<tr>
<td>查询类别：</td>
<td><select name="show_type">
<option value="left" selected>可住房间
<option value="all">全部房间
</select>
</td>
</tr>
 </table>
 <input type="submit" value="提交" name="submit">
</form>  
  </td>
  <td>
   <table>
   <tr>
   <form action="" method="post">输入页号:
<input type="text" name="PageNum" value="1">
   <input type="submit" value="提交">
   <hr>
   <jsp:useBean id="dealquery" class="ShowPage1" scope="page">
   </jsp:useBean>
   </form>
   <tr><td>空房记录如下:</td></tr>
   <br>
  </table>
  </td>
  </tr>
  <tr>
    <td colspan="2"><b>
      <center>
  <font color="#CCCCCC">
  Copyright &copy;北京aaa有限公司</font>
  <br>
  <font color="#99CC00">
   E-mail:[email protected]</font>
      </center>
    </b></td>
  </tr>
</table>
</body>
</html>
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~错误提示：~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~org.apache.jasper.JasperException: /test/query.jsp(58,5) The value for the useBean class attribute ShowPage is invalid.
org.apache.jasper.compiler.DefaultErrorHandler.jspError(DefaultErrorHandler.java:39)
org.apache.jasper.compiler.ErrorDispatcher.dispatch(ErrorDispatcher.java:409)
org.apache.jasper.compiler.ErrorDispatcher.jspError(ErrorDispatcher.java:150)
org.apache.jasper.compiler.Generator$GenerateVisitor.visit(Generator.java:1227)
org.apache.jasper.compiler.Node$UseBean.accept(Node.java:1116)
org.apache.jasper.compiler.Node$Nodes.visit(Node.java:2163)
org.apache.jasper.compiler.Node$Visitor.visitBody(Node.java:2213)
org.apache.jasper.compiler.Node$Visitor.visit(Node.java:2219)
org.apache.jasper.compiler.Node$Root.accept(Node.java:456)
org.apache.jasper.compiler.Node$Nodes.visit(Node.java:2163)
org.apache.jasper.compiler.Generator.generate(Generator.java:3272)
org.apache.jasper.compiler.Compiler.generateJava(Compiler.java:244)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:490)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:471)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:459)
org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:511)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:295)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:292)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:236)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)