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JSP记事本程序
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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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