我有这个粗略的测试示例akka-http客户端和服务器。
服务器.scala：
import akka.actor.ActorSystem
import akka.stream.ActorMaterializer
import akka.stream.scaladsl.Sink
import akka.http.scaladsl.Http
import akka.http.scaladsl.model.HttpMethods._
import akka.http.scaladsl.model._
import scala.concurrent.Future
class Server extends Runnable {
def run() = {
implicit val system = ActorSystem("server")
implicit val materializer = ActorMaterializer()
val serverSource = Http().bind(interface = "localhost", port = 8200)
val requestHandler: HttpRequest => HttpResponse = {
case HttpRequest(GET, Uri.Path("/stream"), _, _, _) =>
HttpResponse(entity = HttpEntity(MediaTypes.`text/plain`, "test"))
}
val bindingFuture: Future[Http.ServerBinding] = serverSource.to(Sink.foreach { connection =>
connection handleWithSyncHandler requestHandler
}).run()
}
}
客户端.scala：
import akka.actor.ActorSystem
import akka.http.scaladsl.Http
import akka.http.scaladsl.model.{Uri, HttpRequest}
import akka.stream.ActorMaterializer
object Client extends App {
implicit val system = ActorSystem("client")
import system.dispatcher
new Thread(new Server).start()
implicit val materializer = ActorMaterializer()
val source = Uri("http://localhost:8200/stream")
val finished = Http().singleRequest(HttpRequest(uri = source)).flatMap { response =>
response.entity.dataBytes.runForeach { chunk =>
println(chunk.utf8String)
}
}
}
眼下Server只需回复一个“测试”。
我该如何更改HttpResponse in Server每 1 秒以无限循环的形式发送“测试”作为分块（流）？
找到了答案。
服务器.scala：
import akka.actor.ActorSystem
import akka.stream.ActorMaterializer
import akka.stream.scaladsl.{Source, Sink}
import akka.http.scaladsl.Http
import akka.http.scaladsl.model.HttpMethods._
import akka.http.scaladsl.model._
import scala.concurrent.Future
import scala.concurrent.duration._
class Server extends Runnable {
def run() = {
implicit val system = ActorSystem("server")
implicit val materializer = ActorMaterializer()
val serverSource = Http().bind(interface = "localhost", port = 8200)
val requestHandler: HttpRequest => HttpResponse = {
case HttpRequest(GET, Uri.Path("/stream"), _, _, _) =>
HttpResponse(entity = HttpEntity.Chunked(ContentTypes.`text/plain`, Source(0 seconds, 1 seconds, "test")))
}
val bindingFuture: Future[Http.ServerBinding] = serverSource.to(Sink.foreach { connection =>
connection handleWithSyncHandler requestHandler
}).run()
}
}
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