Play Framework

wildfire tech team

前 言

• 臃肿，框架繁杂• IDE: Eclipse• 自动化： Ant• Redeploy: JRebel• 敏捷开发的浪潮 (Rails)

Java 项目的开发效率

OK ， Play Framework is coming...

前 言

• scala 用户组• 仿 Rails• 自动编译部署

邂逅 Play

OK ， Let's run a simple example

Example

• app/: model/, view/, controller• conf/: application.rb, routes, messages• lib/• public/• test/

$ play new yabe

Example

• 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

$ play run

Example

• conf/application.conf• default: db=mem• db=mysql://root:root@localhost/yabe

connect to db

Example

• http://localhost:9000/@tests

$ play test

Example

• use Hibernate but have no configuration• play.db.jpa.Model = JPA + helper(e.g. id)

create the data model

app/models/User.java

test/BasicTest.java

app/models/User.java

test/BasicTest.java

app/models/Post.java

test/BasicTest.java

app/models/Comment.java

test/BasicTest.java

app/models/Post.java

test/BasicTest.java

test/data.yml

test/BasicTest.java

All the tests is green?

Example

create the view

conf/data.yml

app/Bootstrap.java

app/controllers/Application.java

app/views/Application/index.html

...ugly version

...beautiful version

...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

OK ，消化一下

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

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

Play 2.0 and scala ...

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

Thank you !