REST based web applications with Spring 3
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This document discusses building RESTful web applications with Spring 3. It introduces REST concepts and shows how Spring MVC supports building REST APIs. New features in Spring MVC 3 like @PathVariable, content negotiation, and @ResponseBody are demonstrated. The presentation concludes by discussing other Spring projects like Web Services, Web Flow, and Security that can be used to extend REST functionality.
REST based web applications with Spring 3
- 1. REST based web applications with Spring 3 Oliver Gierke - Senior Consultant © 2010 SpringSource, A division of VMware. All rights reserved
- 2. Agenda Intro What is REST all about? Recap: @Controller What‘s new in Spring MVC 3.0? What‘s beyond Spring MVC Demo 2
- 3. About Oliver Gierke - Senior Consultant Hi! My name is... OpenSource enthusiast (OR)Persistence, Web, Integration [email protected] http://www.olivergierke.de / olivergierke 3
- 4. SpringSource - a division of VMware Spring Framework • exhaustive ecosystem Roo Groovy / Grails Tomcat / tc Server / Hyperic 4
- 5. REST 5
- 6. The architecture of the web 6
- 7. Identifiers Verbs Resources Hypermedia Representations 7
- 8. Spring MVC 8
- 9. Spring MVC Model View Controller 9
- 10. Recap: Spring MVC 2.5 10
- 11. @Controller @Controller @RequestMapping(„/addresses“) public class AddressController { @RequestMapping(value=“/address“, method = GET) public String showAddress( @RequestParam Long id, Model model) {…} } 11
- 12. Strongly typed methods @RequestMapping(value=“/address“, method = GET) public String showAddress( @RequestParam Long id, Model model) {…} Strongly typed Other special View name request parameter types 12
- 13. What‘s new in Spring MVC 3.0 @PathVariable Content negotiation ResponseBody / RequestBody / ResponseStatus Declarative validation (JSR-303) 13
- 14. @PathVariable @RequestMapping(value=“/addresses/{id}“, method = GET) public String showAddress( @PathVariable Long id, Model model) {…} 14
- 15. Content negotiation http://myapp.com/addresses/1.xml http://myapp.com/addresses/1.json http://myapp.com/addresses/1.html Accept: application/xml Accept: application/json Accept: application/html 15
- 16. @ResposeBody @RequestMapping(value=“/addresses/{id}“, method = GET) @ResponseBody public Address showAddress( @PathVariable Long id, Model model) {…} 16
- 17. @ResponseStatus @ResponseStatus(NOT_FOUND) public class MyException extends RuntimeException {…} 17
- 18. @ResponseStatus @RequestMapping(value=“/addresses/{id}“, method = GET) public String showAddress( @PathVariable Long id, Model model) { if (id == null) throw new MyException(); … } 18
- 19. @RequestBody @RequestMapping(value=“/addresses“, method = POST) @ResponseStatus(CREATED) public void createAddress( @RequestBody Address address) {…} 19
- 20. Declarative Validation @RequestMapping(value=“/addresses“, method = POST) @ResponseStatus(CREATED) public void createAddress( @RequestBody @Valid Address address) {…} 20
- 21. What‘s new in Spring MVC 3.0 New data binding and type conversion service Object-XML-Mapping HiddenHttpMethodFilter XML namespace 21
- 22. Demo 22
- 23. Where do we go from here? 23
- 24. Spring WebServices Spring WebFlow Spring Integration Spring Ecosystem Spring Batch Spring Roo Spring Security 24
- 25. Demo 25
- 26. Questions 26
- 27. Resources Sample: http://github.com/olivergierke/spring-rest Petcare: http://src.springsource.org/svn/spring-samples/petcare/trunk Photos: http://www.sxc.hu/ 27