Thread: multiple connections to db over jsp

Hello folks,

First i must say that i am relativ new with java, tomcat and servlet and
jsp.

I know how to create a simple connection to postgresql with jdbc. I want
to create some simple pages with jsp's that uses postgresql as database.
My problem is how to implement this connection as best in jsp's.
So i want to create 10 (for example) connections to postgresql if the
application is loaded in tomcat so that if a user call a jsp over the
browser the jsp don not create a connection itself. Is this possible? I
think this is possible in a servlet. But is it possible in a jsp?
Can somebody give me some hints or some documentation for this?!

Thanks a lot
Frank Habermann

Frank Habermann wrote:
> Hello folks,
>
> First i must say that i am relativ new with java, tomcat and servlet and
> jsp.
>
> I know how to create a simple connection to postgresql with jdbc. I want
> to create some simple pages with jsp's that uses postgresql as database.
> My problem is how to implement this connection as best in jsp's.
> So i want to create 10 (for example) connections to postgresql if the
> application is loaded in tomcat so that if a user call a jsp over the
> browser the jsp don not create a connection itself. Is this possible? I
> think this is possible in a servlet. But is it possible in a jsp?
> Can somebody give me some hints or some documentation for this?!

Look up datasource in the Tomcat reference.  Here's the link for 5.5:

http://tomcat.apache.org/tomcat-5.5-doc/jndi-datasource-examples-howto.html

This creates a connection pool, and in your JSP page, you just retrieve
a connection from the pool when you need one.

--
Guy Rouillier

Hi,

> Look up datasource in the Tomcat reference.  Here's the link for 5.5:
>
> http://tomcat.apache.org/tomcat-5.5-doc/jndi-datasource-examples-howto.html
>
> This creates a connection pool, and in your JSP page, you just retrieve
> a connection from the pool when you need one.
Thanks a lot! This is what i am searching for!

Frank