我在创建第一个完整的REST项目时遇到了很多困难。我找到的示例只是hello world级别的......我读了几篇博客,几条评论,然后决定创建一个示例项目。它基于scala/akka/spray/mysql。
这是一个完全工作的示例,具有websocket功能,可以通知客户端数据已更改等。您可以在https://github.com/vixxx123/scalasprayslickexample上查看它。
以下是该项目中路由的示例代码:
val personCreateHandler = actorRefFactory.actorOf(RoundRobinPool(2).props(Props[CreateActor]), s"${TableName}CreateRouter")
val personPutHandler = actorRefFactory.actorOf(RoundRobinPool(5).props(Props[UpdateActor]), s"${TableName}PutRouter")
val personGetHandler = actorRefFactory.actorOf(RoundRobinPool(20).props(Props[GetActor]), s"${TableName}GetRouter")
val personDeleteHandler = actorRefFactory.actorOf(RoundRobinPool(2).props(Props[DeleteActor]), s"${TableName}DeleteRouter")
val userRoute =
pathPrefix("person") {
pathEnd {
get {
ctx => personGetHandler ! GetMessage(ctx, None)
} ~
post {
entity(as[Person]) {
entity =>
ctx => personCreateHandler ! CreateMessage(ctx, entity)
}
}
} ~
pathPrefix (IntNumber){
entityId => {
pathEnd {
get {
ctx => personGetHandler ! GetMessage(ctx, Some(entityId))
} ~ put {
entity(as[Person]) { entity =>
ctx => personPutHandler ! PutMessage(ctx, entity.copy(id = Some(entityId)))
}
} ~ delete {
ctx => personDeleteHandler ! DeleteMessage(ctx, entityId)
} ~ patch {
ctx => personPutHandler ! PatchMessage(ctx, entityId)
}
}
}
}
}
创建Actor处理程序的示例:
override def receive: Receive = {
case CreateMessage(ctx, person) =>
val localCtx = ctx
connectionPool withSession {
implicit session =>
try {
val resId = PersonsIdReturning += person
val addedPerson = person.copy(id = Some(resId.asInstanceOf[Int]))
localCtx.complete(addedPerson)
publishAll(CreatePublishMessage(TableName, localCtx.request.uri + "/" + addedPerson.id.get, addedPerson))
L.debug(s"Person create success")
} catch {
case e: Exception =>
L.error(s"Ups cannot create person: ${e.getMessage}", e)
localCtx.complete(e)
}
}
}
仍有两个重要的事情缺失:oauth2和通过websocket向特定用户/连接推送通知