java 如何使用Guice的注射器？
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How to use Guice's Injector?
提问by MyTitle
I'm in process of learning Guice and I don't clearly understand how to use Injectorinstance. It's better to create Injectorinstance once on application bootstrap, and make it public singleton?
我正在学习 Guice，我不清楚如何使用Injector实例。最好Injector在应用程序引导程序上创建一次实例，并将其设为公共单例？
And is it true that we always must use Injector#getInstance(SomeClass.class)to get classes where we putted Guice's @Injectannotations?
我们是否总是必须使用Injector#getInstance(SomeClass.class)来获取放置 Guice@Inject注释的类？
采纳答案by condit
You should not pass the injector around as a global singleton. Have you looked at: https://github.com/google/guice/wiki/GettingStarted? Note that RealBillingServicedoes not use the injector to get instances of CreditCardProcessorand TransactionLog. Instead Guice handles all this for you when creating the instance.
您不应该将注入器作为全局单例传递。你有没有看过：https: //github.com/google/guice/wiki/GettingStarted？请注意，RealBillingService不使用注入器来获取CreditCardProcessor和 的实例TransactionLog。相反，Guice 在创建实例时会为您处理所有这些。
If you're in a situation where you need Guice to create many objects of the same type consider using a Providerand injecting that provider.
如果您需要 Guice 创建许多相同类型的对象，请考虑使用Provider并注入该提供程序。
