akka/akka-http

Marshaller.withFixedContentType doesn't seem to work

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#1,077 创建于 2017年5月2日

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1 - triagedbughelp wantedt:docst:marshalling

描述

When I create a ToEntityMarshaller for a type with Marshaller.withFixedContentType, as so:

  case class SomeType2(content: String)

  implicit val st2AsCsv: ToEntityMarshaller[SomeType2] =
    Marshaller.withFixedContentType(ContentTypes.`text/csv(UTF-8)`)(_.content)

the response is still returning Content-Type: text/plain; charset=UTF-8. Using Marshaller.StringMarshaller.wrap works, though.

  case class SomeType1(content: String)

  implicit val st1AsCsv: ToEntityMarshaller[SomeType1] =
    Marshaller.StringMarshaller.wrap(MediaTypes.`text/csv`)(_.content)

Here's a minimal example to reproduce: https://gist.github.com/chadselph/9149bab77c7aebfcea24bc15c9b82495

I've only tested this on 10.0.5, am I doing something wrong or is this a bug?

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scala
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backendapi
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Scala basicsAkka HTTP marshalling
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研究方向
Investigate the Marshaller.withFixedContentType method to understand why it does not correctly set the Content Type header. Compare its implementation with Marshaller.StringMarshaller.wrap, which works. Check the Akka HTTP source code (e.g., Marshaller.scala) and trace the marshalling logic for entities with fixed content types.
Marshaller.withFixedContentType doesn't seem to work · akka/akka-http#1077 | Good First Issue