Question

我正在尝试将我的WebSocket控制器代码迁移到Play 2.5并遵循ScalaWebSockets处的说明。我的路由配置出现编译错误。我的WebSocket控制器代码如下

package controllers

import akka.actor.ActorSystem
import akka.stream.Materializer
import com.google.inject.Inject
import utils.silhouette.{AuthenticationController, AuthenticationEnvironment}
// This is needed to implicitly provide the Scala ActorSystem
import play.api.libs.concurrent.Execution.Implicits._
import play.api.mvc._
import play.api.libs.streams._
import scala.concurrent.Future

abstract class IntegrationMonitorProvider @Inject() (implicit system:     ActorSystem,
                                                 materializer: Materializer)
  extends AuthenticationController{

  def monitor = WebSocket.acceptOrResult[String, String] { request =>
    implicit val req = Request(request, AnyContentAsEmpty)
    SecuredRequestHandler { securedRequest =>
      Future.successful(HandlerResult(Ok, Some(securedRequest.identity)))
    }.map {
      case HandlerResult(r, Some(user)) =>
                Right(ActorFlow.actorRef(IntegrationMonitor.props(req.session.get("integration").get.toLong) _))
      case HandlerResult(r, None) => Left(r)
    }
  }
}

打算支持WebSocket的各个控制器应该扩展它。这种模式在Play 2.4中运行良好，这个控制器代码也在编译。但是我的路由器配置无法编译并出现以下错误

路由：56：方法申请参数不足：（request：play.api.mvc.RequestHeader）scala.concurrent.Future [play.api.mvc.Result，akka.stream.scaladsl.Flow [play]特征WebSocket中的.api.http.websocket.Message，play.api.http.websocket.Message，_]]]。未指定的值参数请求。

Read from stdout: 
GET     /sample/monitor        controllers.sample.Connection.monitor()

扩展IntegrationMonitorProvider的控制器如下所示

package controllers.sample
import javax.inject.Inject
import akka.actor.ActorSystem
import akka.stream.Materializer
import controllers.{IntegrationMonitor, IntegrationMonitorProvider}
import modules.oauth.{Credential, Metadata, TokenReader}
import play.Logger
import play.api.i18n.MessagesApi
import play.api.libs.json.JsResult
import play.api.mvc.{AnyContent, BodyParsers}
import utils.silhouette.{AuthenticationController, AuthenticationEnvironment}
// This is needed to implicitly provide the Scala ActorSystem
import play.api.libs.concurrent.Execution.Implicits._
import scala.concurrent.Future

class Connection @Inject()(val env: AuthenticationEnvironment, val messagesApi: MessagesApi)
                      (implicit system: ActorSystem,
                       materializer: Materializer)
extends IntegrationMonitorProvider with UrlCreator with DataReader {...

感谢您的任何帮助。

Answer 1

我可以通过删除routes

中的括号来解决问题

即，

GET     /sample/monitor        controllers.sample.Connection.monitor

而不是

GET     /sample/monitor        controllers.sample.Connection.monitor()

Play Framework 2.5，到Web套接字的路由无法编译

1 个答案: