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package guestbook; import java.sql.*; public class guestbook{ String sDBDriver = "sun.jdbc.odbc.JdbcOdbcDriver"; String sConnStr = "jdbc:odbc:guestbook"; Connection conn = null; ResultSet rs = null; public guestbook() { try { Class.forName(sDBDriver); } catch(java.lang.ClassNotFoundException e) { System.err.println("guestbook(): " + e.getMessage()); } } public void executeInsert(String sql) { try { conn = DriverManager.getConnection(sConnStr); Statement stmt = conn.createStatement(); stmt.executeUpdate(sql); } catch(SQLException ex) { System.err.println("guestbook.executeUpdate: " + ex.getMessage()); } } public ResultSet executeQuery(String sql) { rs = null; try { conn = DriverManager.getConnection(sConnStr); Statement stmt = conn.createStatement(); rs = stmt.executeQuery(sql); } catch(SQLException ex) { System.err.println("guestbook.executeQuery: " + ex.getMessage()); } return rs; } } <html> <head> <title>My First Jsp GuestBook</title> <meta http-equiv="Content-Type" content="text/html; charset=gb2312"> </head> <body bgcolor="#CCCCFF" vlink="#000000" alink="#666666"> <div align="center"> <p><font size="7"><b><font size="+6">Jsp GuestBook</font></b></font></p> <form method="post" action="index.jsp"> <table width="75%" align="center" border=1> <tr> <td width="30%"> <div align="right">Name:</div> </td> <td width="70%"> <input type="text" name="name"> </td> </tr> <tr> <td width="30%"> <div align="right">E-mail:</div> </td> <td width="70%"> <input type="text" name="email"> </td> </tr> <tr> <td width="30%"> <div align="right">Site Url:</div> </td> <td width="70%"> <input type="text" name="url" value="http://"> </td> </tr> <tr> <td width="30%"> <p>What do you want to</p> <p>say?</p> </td> <td width="70%"> <textarea name="body" rows="5" cols="30"></textarea> </td> </tr> <tr> <td width="30%"> </td> <td width="70%"> </td> </tr> <tr> <td width="30%"> </td> <td width="70%"> <table width="75%"> <tr> <td> <input type="submit" name="send" value="Send"> </td> <td> <input type="reset" name="reset" value="Reset"> </td> </tr> </table> </td> </tr> </table> </form> <hr> <%@ page language="java" import="java.sql.*" %> <jsp:useBean id="sqlbean" scope="page" class="guestbook.guestbook" /> <%! String name,email,url,body,sql; %> <% if (name!=null&&email!=null&&body!=null) { name = request.getParameter("name"); email = request.getParameter("email"); url = request.getParameter("url"); body = request.getParameter("body"); sql = "insert into guestbook (Name,Email,Url,Body) values('"+name+"','"+email+"','"+url+"','"+body+"')"; sqlbean.executeInsert(sql); }else{ out.print("<b><font color=red>Sorry, Please enter your name,email and body!!!</font></b>"); } %> <p><font size="4"><b><a href="./index.jsp#see">See My Guestbook</a></b></font></p> <%-- Because I don't konw a good method to konw the all items count,so.... --%> <% // ResultSet RScount = sqlbean.executeQuery("SELECT count(*) FROM guestbook"); ResultSet RScount = sqlbean.executeQuery("SELECT * FROM guestbook"); int i=0; while (RScount.next()) { i++; } %> <%-- <p><a name=see><B>Now,<%= RScount %> Records.</B><a></p> --%> <p><a name=see><B>Now,<%= i %> Records.</B><a></p> <% RScount.close(); i=0; %> <p> </p> <% ResultSet RS = sqlbean.executeQuery("SELECT * FROM guestbook ORDER BY RecordID DESC"); while (RS.next()){ name = RS.getString("Name"); email = RS.getString("Email"); url = RS.getString("Url"); body = RS.getString("Body"); %> <table border=1 width=80%> <tr> <td width=30%>Name:</td><td width=70%><%= name %> </tr> <tr> <td width=30%>Email:</td><td width=70%><a href="mailto:<%= email %>"><%= email %></a></td> </tr> <tr> <td width=30%>SiteUrl:</td><td width=70%><a href="<%= url %>"><%= url %></a></td> </tr> <tr> <td width=30%>Body:</td><td width=70%><%= body %></td> </tr> </table> <hr> <% } RS.close(); %> </div> </body> </html> |
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