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<td width="90%"><font size="4" face="Verdana, Arial, Helvetica"><b>message.jsp（续）</b></font></td><td width="200" align="right"><font size="1" face="Verdana, Arial, Helvetica"><nobr> 第 6 页（共8 页）</nobr></font></td>
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<p>接下来，我们需要将被存储为字符大容量对象（clob）的消息文本转换成字符数据。在我们的演示中，我们只是直接将该字符大容量对象转换成一个字符串来显示给用户。仍然使用省略号代替重复的代码；完整的文件，请参阅本文所附带的源代码。</p>
<pre>
<code style="font-family: Courier New, Courier, monospace; font-size: 12">
...
String selectSQL = "SELECT author, title, message "
+ "FROM messages WHERE id = ?" ;
String author ;
String title ;
String message ;
%>
...
PreparedStatement pstmt = con.prepareStatement(selectSQL) ;
pstmt.setInt(1,
Integer.parseInt(request.getParameter("id"))) ;
ResultSet rs = pstmt.executeQuery() ;
rs.next() ;
author = rs.getString("author") ;
title = rs.getString("title") ;
Clob clob = rs.getClob("message") ;
message = clob.getSubString(1, (int)clob.length()) ;
rs.close();
pstmt.close();
con.close() ;
%>
<ul>
<li> Author: <%= author %> </li>
<li> Title: <%= title %> </li>
<li> Message:<p/> <%= message %> </li>
</ul>
<hr>
Return to <a href="view.jsp">digest</a> view.
</body>
</html>
</code>
</pre>
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