An introduction to play framework

1. Play Framework
wildfire tech team

2. 前 言
Java 项目的开发效率
• 臃肿，框架繁杂
• IDE: Eclipse
• 自动化： Ant
• Redeploy: JRebel
• 敏捷开发的浪潮 (Rails)

3. OK ， Play Framework is
coming...

4. 前 言
邂逅 Play
• scala 用户组
• 仿 Rails
• 自动编译部署

5. OK ， Let's run a simple example

6. Example
$ play new yabe
• app/: model/, view/, controller
• conf/: application.rb, routes, messages
• lib/
• public/
• test/

7. Example
$ play run
• http://localhost:9000
• conf/routes
• app/controllers/Application.java
• app/views/Application/index.html
• template: app/views/main.html
• write an error then refresh, Woo~
• write index.html

8. Example
connect to db
• conf/application.conf
• default: db=mem
• db=mysql://root:root@localhost/yabe

9. Example
$ play test
• http://localhost:9000/@tests

10. Example
create the data model
• use Hibernate but have no configuration
• play.db.jpa.Model = JPA + helper(e.g. id)

11. app/models/User.java

12. test/BasicTest.java

13. app/models/User.java

14. test/BasicTest.java

15. app/models/Post.java

16. test/BasicTest.java

17. app/models/Comment.java

18. test/BasicTest.java

19. app/models/Post.java

20. test/BasicTest.java

21. test/data.yml

22. test/BasicTest.java

23. All the tests is green?

24. Example
create the view

25. conf/data.yml

26. app/Bootstrap.java

27. app/controllers/Application.java

28. app/views/Application/index.html

29. ...ugly version

30. ...beautiful version

31. ...so many works
• The comments page
• Setting up a Captcha
• Add tagging support
• A basic admin area using CRUD
• Adding authentication
• Creating a custom editor area
• Completing the application tests
• Preparing for production
• Internationalisation and localisation

32. OK ，消化一下

33. Five cool things you can do with Play
• HTTP param and Java method param
• action and Java method
• DRY (template system)
• JPA on steroids
• Straightforward file upload management

34. Conclusion
• just reload when fix bug
• stateless model(REST, scalable)
• template system(groovy)
• Asynchronous(NIO model, long polling)
• pure java
• full stack
• Resolve and show errors
• Productive

35. Play 2.0 and scala ...

36. Resource
• http://www.playframework.org/
• http://www.playframework.org/2.0

37. Thank you !