How to use Hibernate from a HttpServlet

[Rory Evans]

Hi,

I currently have a project that is configured to use Spring and Hibernate (I let Spring take care of setting up Hibernate). I am successfully using Spring injected beans throughout my application and have also tested to make sure Hibernate is set up correctly.

I have created a servlet that checks incoming requests for request parameters and does a database search based on them. I would like to use Hibernate to do this but am not sure how to use it from my servlet. Can anyone provide an example/suggestions?

I also have a Spring managed DAO which I'm using for all my persistence handling. Preferrably, from my servlet I'd call find() on my DAO. So I guess my question is more 'how do I Spring inject Spring managed beans onto my servlet'?

My servlet currently looks like this:

 public class AccountActivationServlet extends HttpServlet {

	@Override
	protected void doGet(HttpServletRequest req, HttpServletResponse resp)
			throws ServletException, IOException {

		String token = req.getParameter("token");
		String emailAddress = req.getParameter("email");

		resp.setContentType("text/html");

		PrintWriter out = resp.getWriter();
		out.println("Email address: " + emailAddress);
		out.println("Token: " + token);
		out.close();

		// NEED TO DO A DATABASE SEARCH VIA HIBERNATE

	}

}   

Thanks

[Amit ChaudhariC]

Please check http://docs.jboss.org/hibernate/stable/core/reference/en/html/tutorial.html#tutorial-webapp

Regards,
Amit

[Amit ChaudhariC]

Tried it long back but i hope it works - http://www.kodejava.org/examples/32.html

Regards,
Amit

[David Newton]

Where you're using Hibernate from isn't really relevant--moving to the Hibernate forum if the question is actually about Hibernate.

What specifically is the question? So far your code reminds me of this:

But here the miracle is the Hibernate code.

[Rory Evans]

Thanks for the links Amit.

I think I'll give the example in your second post a go. Although I'm planning on using the @Autowired annotation to wire in my UserDAO - this should save me having to manually get the Spring Context.

Apologies for marking this as a Hibernate question - upon further inspection it's more to do with injecting Spring managed beans into a servlet.

Thanks