编组 XML Go XMLName + xmlns

Question

我正在尝试实现以下 XML 输出

<?xml version="1.0" encoding="UTF-8"?>

<CreateHostedZoneRequest xmlns="https://route53.amazonaws.com/doc/2012-12-12/">

   <Name>DNS domain name</Name>

   <CallerReference>unique description</CallerReference>

   <HostedZoneConfig>

      <Comment>optional comment</Comment>

   </HostedZoneConfig>

</CreateHostedZoneRequest>

我有以下输出非常接近的 XML 但是我无法编码到 CreateHostedZoneRequest

xmlns="https://route53.amazonaws.com/doc/2012-12-12/

package main

import "fmt"

import "encoding/xml"

type ZoneRequest struct {

  Name            string

  CallerReference string

  Comment         string `xml:"HostedZoneConfig>Comment"`

}

var zoneRequest = ZoneRequest{

  Name:            "DNS domain name",

  CallerReference: "unique description",

  Comment:         "optional comment",

}

func main() {

  tmp, _ := createHostedZoneXML(zoneRequest)

  fmt.Println(tmp)

}

func createHostedZoneXML(zoneRequest ZoneRequest) (response string, err error) {

  tmp := struct {

    ZoneRequest

    XMLName struct{} `xml:"CreateHostedZoneRequest"`

  }{ZoneRequest: zoneRequest}

  byteXML, err := xml.MarshalIndent(tmp, "", `   `)

  if err != nil {

    return "", err

  }

  response = xml.Header + string(byteXML)

  return

}

http://play.golang.org/p/pyK76VPD5-

如何将 xmlns 编码到 CreateHostedZoneRequest 中？