Comments on: Layered architecture with Hibernate and Spring 3

By: Bo

Bo — Thu, 22 Jul 2010 08:30:56 +0000

I tried your example and created a controller to test it.

I got an exception “org.hibernate.HibernateException: No Hibernate Session bound to thread, and configuration does not allow creation of non-transactional one here” with the following code. How can I fix it without adding proxy-target-class=”true”? Thanks.

@Controller
public class MyController {

private UserService userService;

@Autowired
public MyController(UserService userService) {
this.userService = userService;
}

@RequestMapping(“/{page}”)
public ModelAndView category(@PathVariable String page) {
ModelAndView mav = new ModelAndView();
mav.addObject(“page”, page);
userService.createUser(new User(“Dummy”, 30));
mav.setViewName(“/index”);
return mav;
}

By: Carlos Vara

Carlos Vara — Thu, 03 Jun 2010 18:27:35 +0000

app-config.xml is generally associated with Spring MVC. For this tutorial, as the layering stops at the service layer and no presentation code is added, the file shouldn’t be needed.

By: Giancasa

Giancasa — Tue, 25 May 2010 10:36:49 +0000

Very good!!!

Thanks

By: pkach00

pkach00 — Mon, 26 Apr 2010 18:51:36 +0000

Heh… Used this tutorial. Seems one MAJOR thing missing…
You should tell to put into app-config.xml

I was fighting with errors half of the day :-\

By: Carlos Vara

Carlos Vara — Wed, 17 Mar 2010 13:08:25 +0000

Make sure that your service implementation class actually implements the interface HistoricalPriceService.

If you are coding a new Spring application, it is usually a good idea to adhere to the principle of coding to interfaces, and having to use proxy-target-class=”true” usually means the opposite.

By: Mark

Mark — Thu, 11 Mar 2010 17:39:35 +0000

I got it – I had to include proxy-target-class=”true” to the tag.

By: Marfk

Marfk — Thu, 11 Mar 2010 16:43:34 +0000

I’ve tried following your instructions, but I receive the following error when I try to call the service’s methods:

java.lang.ClassCastException: $Proxy66 cannot be cast to com.trs.service.impl.HistoricalPriceService

By: Gilson DElrei

Gilson DElrei — Tue, 09 Mar 2010 02:05:15 +0000

Very simplified, but a good article! I like to see the things made simple like it. Could you extend it to an more complete sample, maybe including the presentation Layer ?

By: Chris

Chris — Sun, 28 Feb 2010 17:49:17 +0000

Great work, thanks a lot!

By: Prashant Pandey

Prashant Pandey — Mon, 01 Feb 2010 07:10:24 +0000

Very good article needs to be more descriptive