Try the following:
Add a JNDI data resource in your server.xml file??
Add a reference to that JNDI resource inside of your application's context.
Create a class to access the JNDI resource
Create a class that mirrors or maps the data from your database
Run the query and populate your mapped data class in your jsp page.
Steps3 & 4 are below
---------------------
import javax.naming.*;
import javax.sql.*;
import java.sql.*;
public class prepareStoredProcedure {
private static DataSource ds;
public static void main(String[] args) {
}
private static void init() throws Exception {
try {
Context ctx = new InitialContext();
if (ctx == null) throw new Exception("Boom - No Context");
ds =
(DataSource)ctx.lookup("java:comp/env/jdbc/MyDataSourceName");
System.out.println( ds.toString());
if (ds == null) throw new Exception("Boom - no datasource
available");
} catch (Exception ex) {
ex.printStackTrace();
throw ex;
}
}
public static Connection getConnection() throws Exception {
if (ds == null) init();
return ds.getConnection();
}
}
-----------------------------------------------------------
public class MyNewMenu {
public static void main(String[] args) {
}
public static List getNavItems(){
Connection conn = null;
ArrayList lRetrievedRecs = new ArrayList();
try
{
conn = prepareStoredProcedure.getConnection();
String sQuery = " SELECT field1, field2, field3, etc
FROM tblnavigation ";
Statement stmt = conn.createStatement();
ResultSet rs = stmt.executeQuery(sQuery);
if ( rs == null) {
rs.close();
stmt.close();
}
while (rs.next()) {
Object[] obj = new Object[3];
obj[0] = (Integer) new
Integer(rs.getInt("navid"));
obj[1] = (Integer) new
Integer(rs.getInt("parentid"));
obj[2] = (String) rs.getString("NavTitle");
lRetrievedRecs.add(obj);
}
rs.close();
stmt.close();
}
catch (SQLException e)
{
// TODO Auto-generated catch block
e.printStackTrace();
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
finally
{
try {
if(!(conn.isClosed())) conn.close();
}catch(Exception e) {}
}
return lRetrievedRecs;
}
}
--------------------
Hope this gets you in the right direction.
-----Original Message-----
From: A mailing list about Java Server Pages specification and reference
[mailto:[EMAIL PROTECTED] On Behalf Of Ming Li
Sent: Thursday, August 18, 2005 2:46 PM
To: JSP-INTEREST@JAVA.SUN.COM
Subject: Re: How to trigger an event to fetch data from DB?
I guess I need a ServletContextListener...
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