Mailjet中未经授权的请求

Question

我正在使用MailJet Java Api发送电子邮件，我将此代码编写为scala：

object Main {
  var client: MailjetClient = null
  var request: MailjetRequest = _
  var response: MailjetResponse = _

  def main(args: Array[String]) {

    client = new MailjetClient(System.getenv("MJ_APIKEY_PUBLIC"), System.getenv("MJ_APIKEY_PRIVATE"))
    request = new MailjetRequest(Email.resource)
      .property(Email.FROMEMAIL, "pilot@mailjet.com")
      .property(Email.FROMNAME, "Pilot")
      .property(Email.SUBJECT, "Your mail !!!!")
      .property(Email.TO, "passenger@mailjet.com")
    response = client.post(request)
    println(response.getStatus)
    println(response.getData)

  }

但是我得到401 Unauthorized，虽然我的公共API密钥和私有都是更正的。你有任何想法