Dependency Injection in play framework

[RammusXu]

https://www.playframework.com/documentation/2.5.x/JavaDependencyInjection

Dependency Injection

動機

• 同樣的元件可以有不同方式的實作
• 避免global static state
• statia APIs 需要執行中的應用程式，會使得測試較不彈性

http://openhome.cc/Gossip/SpringGossip/DI.html

步驟

1. create interface class
2. create object class
   • private interface
   • public object(interface interface)

     example

https://groups.google.com/forum/#!msg/play-framework/uLFqTM9_Iy4/tsDdrY9JKwAJ