Question

我正在尝试使用Linq的XDocument创建一个GPX序列化程序。在文档的开头，我应该指定3个XML命名空间，以实现这样的目的：

<?xml version='1.0' encoding='UTF-8' ?>
<gpx version="1.1" creator="TrekBuddy 0.9.99" xmlns="http://www.topografix.com/GPX/1/1" xmlns:nmea="http://trekbuddy.net/2009/01/gpx/nmea" xmlns:gsm="http://trekbuddy.net/2009/01/gpx/gsm">
  <trk>
    <trkseg>
      <trkpt lat="48.926513616" lon="19.650097458">
        <ele>1787.0</ele>
        <time>2010-08-12T13:47:17.214Z</time>
        <fix>3d</fix>
        <sat>6</sat>
        <extensions>
          <nmea:course>263.8</nmea:course>
          <nmea:speed>1.2</nmea:speed>
        </extensions>
      </trkpt>

我正在使用以下代码进行XDocument实例化：

private XDocument CreateXDocument(Gpx.Gpx data)
{
    XNamespace xmlns = data.XmlnsUrl;
    XNamespace nmea = data.NmeaUrl;
    XNamespace gsm = data.GsmUrl;
    return new XDocument(
        new XDeclaration("1.0", "UTF-8", null),
        new XElement(xmlns + "gpx",
            new XAttribute("creator", data.Creator),
            new XAttribute(nmea + "nmea", data.NmeaUrl),
            new XAttribute(gsm + "gsm", data.GsmUrl),
            CreateTrk(data.Track, nmea)));
}

此代码用于添加单个扩展程序：

private XElement CreateExtension(Extension extension, XNamespace nmeaNamespace)
{
    if (extension is NmeaExtension)
    {
        var nmea = extension as NmeaExtension;
        return new XElement("extensions",
            new XElement(nmea + "course", nmea.Course),
            new XElement(nmea + "speed", nmea.Speed));
    }
    else return new XElement("extensions");
}

但是，我得到以下结果，而不是预期的结果：

<gpx creator="TrekBuddy 0.9.99" p1:nmea="http://trekbuddy.net/2009/01/gpx/nmea" p2:gsm="http://trekbuddy.net/2009/01/gpx/gsm" xmlns:p2="http://trekbuddy.net/2009/01/gpx/gsm" xmlns:p1="http://trekbuddy.net/2009/01/gpx/nmea" xmlns="http://www.topografix.com/GPX/1/1">
  <trk xmlns="">
    <trkseg>
      <trkpt lat="4909.933" lon="2016.67883">
        <ele>1787.0</ele>
        <time>2010-08-12T13:47:17.214Z</time>
        <fix>3d</fix>
        <sat>6</sat>
        <extensions>
          <Geolocation.Gpx.Extensions.NmeaExtensioncourse>188.6</Geolocation.Gpx.Extensions.NmeaExtensioncourse>
          <Geolocation.Gpx.Extensions.NmeaExtensionspeed>0.9774523</Geolocation.Gpx.Extensions.NmeaExtensionspeed>
        </extensions>
      </trkpt>

有人可以帮我调整我的代码，所以我得到了预期的结果吗？ official documentation在这种情况下并不特别有用......

将多个XNamespace添加到XDocument中

0 个答案: