升级到Play 2.5.0之后：java.lang.RuntimeException：没有启动应用程序

Question

我试图将我的应用程序更新为Play 2.5.0。所有测试OneAppPerTest不再运行。该应用程序也不再运行。我可以sbt run启动应用程序，但我的第一个请求带来了同样的错误消息：

java.lang.RuntimeException: There is no started application. 

我确实有DI和性状的结构和它工作正常在游戏2.4.6。 我不知道现在在哪里搜索。有人有同样的问题吗？

Error injecting constructor, java.lang.RuntimeException: There is no started application 
    at com.myproject.controllers.MyController.<init>(MyController.scala:30) 
    at com.myproject.controllers.MyController.class(MyController.scala:30) 
    while locating com.myproject.controllers.MyController 
    for parameter 7 at router.Routes.<init>(Routes.scala:79) 
    while locating router.Routes 
    while locating play.api.inject.RoutesProvider 
    while locating play.api.routing.Router 
    for parameter 0 at play.api.http.JavaCompatibleHttpRequestHandler.<init>(HttpRequestHandler.scala:200) 
    while locating play.api.http.JavaCompatibleHttpRequestHandler 
    while locating play.api.http.HttpRequestHandler 
    for parameter 4 at play.api.DefaultApplication.<init>(Application.scala:220) 
    at play.api.DefaultApplication.class(Application.scala:220) 
    while locating play.api.DefaultApplication 
    while locating play.api.Application 
Caused by: java.lang.RuntimeException: There is no started application 
     at scala.sys.package$.error(package.scala:27) 
     at play.api.Play$$anonfun$current$1.apply(Play.scala:86) 
     at play.api.Play$$anonfun$current$1.apply(Play.scala:86) 
     at scala.Option.getOrElse(Option.scala:121) 
     at play.api.Play$.current(Play.scala:86) 
     at com.myproject.model.dao.DAOSlick$class.dbConfig(DAOSlick.scala:11) 
     at com.myproject.controllers.MyController.dbConfig$lzycompute(MyController.scala:30) 
     at com.myproject.controllers.MyController.dbConfig(MyController.scala:30) 
     at play.api.db.slick.HasDatabaseConfig$class.driver(DatabaseConfigProvider.scala:142) 
     at com.myproject.controllers.MyController.driver$lzycompute(MyController.scala:30) 
     at com.myproject.controllers.MyController.driver(MyController.scala:30) 
     at com.myproject.controllers.MyController.driver(MyController.scala:30) 
     at com.myproject.model.dao.JavaTimeMapper$class.$init$(JavaTimeMapper.scala:20) 
     at com.myproject.controllers.MyController.<init>(MyController.scala:30) 
     at com.myproject.controllers.MyController$$FastClassByGuice$$b68ea36a.newInstance(<generated>) 
     at com.google.inject.internal.cglib.reflect.$FastConstructor.newInstance(FastConstructor.java:40) 

这里是我的DAOSlick特质，这是使用过时Play.current：

import play.api.Play 
import play.api.db.slick.DatabaseConfigProvider 
import slick.driver.JdbcProfile 

trait DAOSlick { 
    protected lazy val dbConfig = DatabaseConfigProvider.get[JdbcProfile]("default")(Play.current) // this is line 11, where it fails 
    protected val driver: JdbcProfile 
    import driver.api._ 
} 

这里是 “myController的头”：

@Singleton 
class WebsocketController @Inject() (redis: RedisService, notificationService: NotificationService) extends SecuredController with SomeService { 

两个，注入的服务NotificationService和特性SomeService正在扩展DAOSlick特性。

任何人都可以给我一个提示，如何将我的DAOSlick中的依赖项更改为Play.current？

Answer 1

看起来像DatabaseConfig via Global Lookup已过时。而不是使用一个全局查找的，我建议切换到依赖注入干脆：

import javax.inject.Inject 
import play.api.db.slick.{DatabaseConfigProvider, HasDatabaseConfigProvider} 
import slick.driver.JdbcProfile 

class SomeDao @Inject()(protected val dbConfigProvider: DatabaseConfigProvider) extends HasDatabaseConfigProvider[JdbcProfile] { 
    import driver.api._ 

    // dao stuff... 
} 

不知道全局查找仍然是一个了......事情或许不与Play.current的deperecation。如果我错了，请纠正我。