在Play 2.5中为源流添加前缀/后缀

import play.api.mvc._

class PrefixAction(prefix: String) extends ActionBuilder[Request, AnyContent] {
  override def invokeBlock[A](request: Request[A], block: Request[A] => Future[Result]): Future[Result] = {
    val modifiedRequest = request.copy(path = s"$prefix${request.path}")
    block(modifiedRequest)
  }
}

val prefixedAction = new PrefixAction("/prefix")

def index = prefixedAction { request =>
  Ok("Hello World")
}

import play.api.mvc._

class SuffixFilter(suffix: String) extends EssentialFilter {
  override def apply(next: EssentialAction): EssentialAction = new EssentialAction {
    override def apply(request: RequestHeader): Accumulator[ByteString, Result] = {
      val modifiedRequest = request.copy(path = s"${request.path}$suffix")
      next(modifiedRequest)
    }
  }
}

val suffixFilter = new SuffixFilter("/suffix")

def index = Action { request =>
  Ok("Hello World")
}

val filteredIndex = suffixFilter(index)