小编Rip*_*tel的帖子

我想使用Guice为Generic类型注入依赖.在scala中查找以下示例来复制问题.

ProductModel.scala

trait BaseProduct  

case class Product() extends BaseProduct 

CartService.scala

class CartService[A <: BaseProduct] @Inject()(productService : ProductService[A]) {
 def getCartItems = productService.getProduct
}

ProductService.scala

class ProductService[A]{
 def getProduct = println("ProductService")
}

Main.scala

object Main extends App {

  val injector = Guice.createInjector(new ShoppingModule)
  val cartService = injector.getInstance(classOf[CartService[Product]])
  cartService.getCartItems
}

class ShoppingModule extends AbstractModule with ScalaModule {
  override def configure(): Unit = {
    bind[BaseProduct].to(scalaguice.typeLiteral[Product])
  }
}

运行此Main.scala应用程序时出现以下错误.

service.ProductService<A> cannot be used as a key; It is not fully specified.

我尝试使用codingwell库进行绑定.但它无法识别ProductService Type.