播放2.0 / 2.1 for Java和依赖注入 [英] Play 2.0/2.1 for Java and dependency injection

问题描述

我们有一个新的Play 2.0项目，我们计划在添加一些复杂的第三方集成代码时引入DI。

We have a new Play 2.0 project and we are planning to introduce DI as we add some complex 3rd party integration code.

Play 2.0有一个Guice插件但看起来它在2.1时已经过时了，我预感2.1不再那么远了。

There is a Guice plugin for Play 2.0 but it looks like it will be obsolete at 2.1 and I have a hunch that 2.1 is not that far anymore.

https://github.com/typesafehub/play-plugins/tree/master/guice

对于Play 2.0 / 2.1，Guice是安全的赌注，还是我们应该考虑其他选择？

Is Guice a safe bet for Play 2.0/2.1 or should we consider other options?

推荐答案

我请使用2.1版本，以及来自Global对象的新控制器实例。

I'd go with the 2.1 version, and the new controller instanciation from the Global object.

这是来自 doc ：

  import play.GlobalSettings;

  import com.google.inject.Guice;
  import com.google.inject.Injector;

  public class Global extends GlobalSettings {

    private static final Injector INJECTOR = createInjector(); 

    @Override
    public <A> A getControllerInstance(Class<A> controllerClass) throws Exception {
      return INJECTOR.getInstance(controllerClass);
    }

    private static Injector createInjector() {
      return Guice.createInjector();
    }

  }

您必须申报特殊路线对于这些控制器，使用特殊的 @ ：

You have to declare a special route for these controllers, with the special @:

GET    /myUrl       @controllers.MyController.myMethod()

您还可以使用Spring查看此演示：< a href =https://github.com/guillaumebort/play20-spring-demo> https://github.com/guillaumebort/play20-spring-demo

And you can also take a look at this demo using Spring: https://github.com/guillaumebort/play20-spring-demo

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