如何在play framework2.5中正确地在特征中注入DBApi？

import javax.inject.Inject
import play.api.db.DBApi

trait DatabaseAccess {
  val dbApi: DBApi
  lazy val db = dbApi.database("default")
}

import javax.inject.Inject
import play.api.db.DBApi

class UserRepository @Inject()(val dbApi: DBApi) extends DatabaseAccess {
  // 在这里可以使用db对象进行数据库操作
  // 例如：db.withConnection { conn =>
  //         // 执行数据库查询等操作
  //       }
}

import com.google.inject.AbstractModule
import repositories.UserRepository
import services.UserService

class Module extends AbstractModule {
  override def configure(): Unit = {
    bind(classOf[UserRepository]).to(classOf[UserRepository])
    bind(classOf[UserService]).to(classOf[UserService])
  }
}

import play.api.ApplicationLoader.Context
import play.api.{Application, ApplicationLoader, BuiltInComponentsFromContext}
import play.api.db.DBComponentsFromContext
import play.api.db.evolutions.EvolutionsComponents
import play.api.db.slick.evolutions.SlickEvolutionsComponents
import play.api.db.slick.{DbName, SlickComponents}
import play.api.routing.Router
import router.Routes

class MyApplicationLoader extends ApplicationLoader {
  def load(context: Context): Application = {
    new MyComponents(context).application
  }
}

class MyComponents(context: Context)
  extends BuiltInComponentsFromContext(context)
    with DBComponentsFromContext
    with EvolutionsComponents
    with SlickEvolutionsComponents
    with SlickComponents {

  lazy val userRepository = new UserRepository(dbApi)

  // 其他组件的配置和绑定

  override def router: Router = new Routes(httpErrorHandler, homeController, userRepository)
}