找不到`MessagesApi`的限定bean

Question

我已将messagesApi注入我的控制器documented（播放2.4.x）：

@Scope(value = "singleton")
@Component
class MyController @Inject()(val messagesApi: MessagesApi) extends Controller with I18nSupport

但是在开机时：

Caused by: org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [play.api.i18n.MessagesApi] found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {}

Answer 1

您需要使用BaseController或InjectedController扩展您的控制器;所以你的代码将是：

class MyController @Inject()(val messagesApi: MessagesApi) extends InjectedController with I18nSupport{}

有关详细信息，请查看Play documents。