使用Play的WS API发送gzipped请求

Question

我在Scala中使用Play的WS API来发出HTTP请求。我需要发送一个gzip post请求，我很难做到这一点。

val compressedData = deflate(data).get
val request = (<requestHolder>).withHeaders("Content-Encoding" -> "gzip")
  .withHeaders("Content-Length" -> compressedData.size.toString).withHeaders("Content-Type" -> "application/json")

val temp = getStringFromByteArray(compressedData)
request.post(temp).map { r =>
  if(r.status / 100 == 2) {
    r.json
  }
  else { ...} }

这是我的gzip助手方法：

  def deflate(txt: String): Try[ByteArrayOutputStream] = Try {
    val outputStream = new ByteArrayOutputStream()
    val zipStream = new GZIPOutputStream(outputStream)
    zipStream.write(txt.getBytes)
    zipStream.close()
    outputStream
  }

  def getStringFromByteArray(stream: ByteArrayOutputStream): String = {
    Base64.encodeBase64String(stream.toByteArray)
  }