JSP DB Connection

Question

I wanted to connect to an oracle database using JSP. I've successfully done this. However, it looks like I will now have 1 giant file (jsp) with the db connection code included in it, and I think this is messy. So... I'd like to have a separate Java file which allows me to connect to the database, then somehow use this in the JSP file? I imagine the Java file would be compiled only once and would sit on the server while being accessed via the JSP file.
Is this possible? If so, any tips?
Thanks.

Answer 1

A bean is the preferred way to do it.
However, a more simpler method is simply put all of your database connection stuff in a standalone object, compile that object into a class file, place the class file in the appropriate directory, and simply invoke it as needed.
For example...
I have a class db that was created in db.java, with a constructor, various methods, and so on.
I place db.class in the classes directory of my Servlet Engine.
In my jsp page, I do...
<%@ page import "db" %>
and eventually...
<%
db myDatabaseConnection = new db;
db.connect();
resultSet results = db.executeQuery( query );
db.close();
%>
I think there should be some examples in your reference book (or tutorial). Simply look up importing other classes into your application. Please don't use mine, as there are some minor flaws and potential for trouble, but it should be good enough to give you an idea of what you can do.