Question

我试图确保服务器的所有响应都通过GZIP进行编码/压缩。它适用于已定义的路径，但我无法弄清楚如何为“已拒绝”路径实现相同的目的。

import akka.actor.ActorSystem
import akka.http.scaladsl.Http
import akka.http.scaladsl.coding.Gzip
import akka.http.scaladsl.model._
import akka.http.scaladsl.server.Directives._
import akka.stream.ActorMaterializer

import scala.concurrent.Await
import scala.concurrent.duration.Duration

object Test extends App {

  implicit val system = ActorSystem("my-system")
  implicit val materializer = ActorMaterializer()
  implicit val executionContext = system.dispatcher

  val route =
    encodeResponseWith(Gzip) {
      path("hello") {
        get {
          complete(HttpEntity(ContentTypes.`text/plain(UTF-8)`, "world"))
        }
      }
    }

  val bindingFuture = Http().bindAndHandle(route, "localhost", 8080)

  Await.result(bindingFuture, Duration.Inf)
}

响应（找到路线时压缩）

http http://localhost:8080/hello
HTTP/1.1 200 OK
Content-Encoding: gzip
Content-Type: text/plain; charset=UTF-8
Date: Fri, 27 May 2016 17:54:40 GMT
Server: akka-http/2.4.6
Transfer-Encoding: chunked

world

响应（未找到路线时未压缩 - AKA被拒绝）

http http://localhost:8080/hell0
HTTP/1.1 404 Not Found
Content-Length: 42
Content-Type: text/plain; charset=UTF-8
Date: Fri, 27 May 2016 17:57:50 GMT
Server: akka-http/2.4.6

The requested resource could not be found.

更新

即使使用RejectionHandler，响应也不会受到影响。

implicit def myRejectionHandler = RejectionHandler.newBuilder()
  .handleNotFound {
    encodeResponseWith(Gzip) {
      complete((NotFound, "Not here!"))
    }
  }.result()

产量

HTTP/1.1 404 Not Found
Content-Length: 9
Content-Type: text/plain; charset=UTF-8
Date: Fri, 27 May 2016 18:10:47 GMT
Server: akka-http/2.4.6

Not here!

Answer 1

您需要定义隐式RejectionHandler，如official documentation

中所述

implicit def myRejectionHandler = RejectionHandler.newBuilder()
  .handleNotFound {
    encodeResponseWith(Gzip) {
      complete((NotFound, "Not here!"))
    }
  }.result()

如何编码（GZIP）被拒绝路径的响应？

1 个答案: