Starting with Spring MVC 2.5, Annotation-Based Controllers became the preferred model for development (the Interface-based Controller hierarchy will be deprecated in Spring 3). This session will teach developers familiar with the old model how to use the new Annotation-based Controllers. This will also provide the basis for writing JSR 286 portlets using Spring 3. Sample code available here: http://www.ja-sig.org/wiki/x/vYS8AQ Full screencast available here: http://vimeo.com/10020881

1. Annotation-Based Spring Portlet MVC John A. Lewis Chief Software Architect Unicon, Inc. Jasig 2010 Conference 8 March 2010 © Copyright Unicon, Inc., 2010. Some rights reserved. This work is licensed under a Creative Commons Attribution-Noncommercial-Share Alike 3.0 United States License. To view a copy of this license, visit http://creativecommons.org/licenses/by-nc-sa/3.0/us/

3. Request-Oriented Web Framework

7. Delegates to service layer for business logic

8. Dispatcher (Servlet/Portlet) Request Handler Mapping View Resolver Response Controller View ModelAndView Map (Model) viewName

10. Setup Pluto as a Server in Eclipse & start it

11. Import 'spring-portlet-sample' application

12. Create Maven task to build & deploy

13. Build & deploy the sample application

15. Annotation-Based Controllers Where to put the logic

17. Eliminates need for complex HandlerMapping configuration to deal with navigation via Portlet Modes and Request Parameters

18. Allows related logic to be combined into a single Controller class

19. Will replace the entire Controller hierarchy – most capability already supported

20. Annotation-Based Controller Beans <context:annotation-config/> <bean class=&quot;org.springframework.web.portlet.mvc. annotation.DefaultAnnotationHandlerMapping&quot;/> <bean class=&quot;org.sample.MyViewController&quot;/> <bean class=&quot;org.sample.MyEditController&quot;/> <bean class=&quot;org.sample.MyHelpController&quot;/>

22. @SessionAttributes – list model attributes to be stored in the session (command object)

23. @RequestMapping – class/method mapping to requests (mode, parameters, etc.)

24. @RequestParam – bind method params to request params

25. @ModelAttribute – bind method params or return values to model attributes

26. @InitBinder – method to setup binder for putting form submission into command obj

27. Annotation-Based Controller Examples @Controller @RequestMapping(&quot;VIEW&quot;) @SessionAttributes(&quot;item&quot;) public class MyViewController { @RequestMapping public String listItems(Model model) { model.addAttribute(&quot;items&quot;, this.itemService.getAllItems()); return &quot;itemList&quot;; } @RequestMapping(params=&quot;action=view&quot;) public String viewPet( @RequestParam(&quot;item&quot;) int itemId, Model model) { model.addAttribute(&quot;item&quot;, this.itemService.getItem(itemId)); return &quot;itemDetails&quot;; } ...

28. Annotation-Based Controller Examples ... @ModelAttribute(&quot;dateFormat&quot;) protected String dateFormat(PortletPreferences prefs) { return preferences.getValue(&quot;dateFormat&quot;, itemService.DEFAULT_DATE_FORMAT); } @InitBinder public void initBinder(PortletRequestDataBinder binder, PortletPreferences preferences) { String format = preferences.getValue(&quot;dateFormat&quot;, ItemService.DEFAULT_DATE_FORMAT); SimpleDateFormat dateFormat = new SimpleDateFormat(formatString); binder.registerCustomEditor(Date.class, new CustomDateEditor(dateFormat, true)); } ...

30. sample/portlet/BooksController.java

31. Portlet 2.0 (JSR 286) Support The next generation portlet framework

33. Resource Serving (New lifecycle phase!)

34. Public Render Parameters

35. Portlet Filters

36. Caching Changes Lots of other minor changes...

38. Spring 3.0 released 16 Dec 2009

40. EventRequest / EventResponse (new!)

41. RenderRequest / RenderResponse

42. ResourceRequest / ResourceResponse (new!)

44. Portlet 2.0 Examples @ActionMapping(”delete”) public void deleteItem(...) { ... } @EventMapping(”reload”) public void reloadData(...) { ... } @RenderMapping(&quot;maximized&quot;, params=&quot;action=search&quot;) public String displaySearch(...) { ... } @ResourceMapping(”picklist”) public ModelAndView pickList (...) {...}

45. Questions & Answers John A. Lewis Chief Software Architect Unicon, Inc. [email_address] www.unicon.net