Asp.net 从控制器获取kmz文件
我正在尝试使用一些代码: 使用给定GET请求的kmz文件进行响应。这是我的代码:Asp.net 从控制器获取kmz文件,asp.net,asp.net-mvc,asp.net-mvc-2,asp.net-mvc-3,Asp.net,Asp.net Mvc,Asp.net Mvc 2,Asp.net Mvc 3,我正在尝试使用一些代码: 使用给定GET请求的kmz文件进行响应。这是我的代码: public void GetKMZ() { this.Response.Clear(); Response.AddHeader("Content-Disposition", "attachment;filename=GoogleMap.kmz"); this.Response.ContentType = "application/vnd.google-earth.kmz";
public void GetKMZ()
{
this.Response.Clear();
Response.AddHeader("Content-Disposition", "attachment;filename=GoogleMap.kmz");
this.Response.ContentType = "application/vnd.google-earth.kmz";
this.Response.AppendHeader("Content-Encoding", "kmz");
byte[] bytes = null;
MemoryStream memStream = new MemoryStream();
XmlTextWriter xmlTW = new XmlTextWriter(memStream,Encoding.UTF8);
xmlTW.Formatting = Formatting.Indented;
xmlTW.WriteStartDocument();
xmlTW.WriteStartElement("kml");
xmlTW.WriteAttributeString("xmlns", "http://www.opengis.net/kml/2.2");
xmlTW.WriteStartElement("Document");
xmlTW.WriteStartElement("Style");
xmlTW.WriteAttributeString("id", "s1");
xmlTW.WriteStartElement("LineStyle");
xmlTW.WriteElementString("color", "7f0000ff");
xmlTW.WriteElementString("width", "3");
xmlTW.WriteEndElement();
xmlTW.WriteEndElement();
xmlTW.WriteElementString("name", "Chicago Transit Map");
xmlTW.WriteElementString("description", "Chicago Transit Authority train lines");
xmlTW.WriteStartElement("Placemark");
xmlTW.WriteElementString("styleUrl", "#s1");
xmlTW.WriteElementString("name", "Chicago Transit Map");
xmlTW.WriteStartElement("LineString");
xmlTW.WriteElementString("altitudeMode", "relative");
xmlTW.WriteElementString("coordinates", "-87.89289951324463,41.97881025520548,0 -87.89184808731079,41.97788506340239,0 -87.89150476455688,41.97762983571196,0");
xmlTW.WriteEndElement();
xmlTW.WriteEndElement();
xmlTW.WriteEndElement();
xmlTW.WriteEndElement(); //Document
xmlTW.WriteEndDocument(); // kml
xmlTW.Close();
bytes = memStream.ToArray(); // vs .GetBuffer();
MemoryStream memStream2 = new MemoryStream();
using (ZipOutputStream gzOs = new ZipOutputStream(memStream2))
{
ZipEntry entry = new ZipEntry("GoogleMap.kml");
gzOs.SetLevel(9);
gzOs.PutNextEntry(entry);
gzOs.Write(bytes, 0, bytes.Length);
gzOs.CloseEntry();
gzOs.Close();
}
this.Response.Clear();
this.Response.BinaryWrite(memStream2.ToArray());
this.Response.End();
}
如果我使用winrar将生成的kmz文件解压缩为kml文件,也就是说,我可以在谷歌地图中打开它,那么生成的kmz文件就可以工作。不幸的是,googleearth/map不喜欢GET请求生成的kmz文件。我正在使用ASP.NETMVC3。无法为.net 2.0编译zip dll:
using ICSharpCode.SharpZipLib.Zip;
using ICSharpCode.SharpZipLib.Checksums;
有问题吗
谢谢
ChristianDotNetZip似乎在起作用:
// http://stackoverflow.com/questions/4717605/asp-net-vb-kml-generator
[AcceptVerbs(HttpVerbs.Get)]
public void GetKMZ()
{
Response.AppendHeader("Connection", "close");
Response.ContentType = "application/vnd.google-earth.kmz";
Response.Cache.SetCacheability(System.Web.HttpCacheability.NoCache);
ZipOutputStream outzip = new ZipOutputStream(Response.OutputStream);
outzip.EnableZip64 = Zip64Option.Never;
outzip.CompressionLevel = Ionic.Zlib.CompressionLevel.BestCompression;
outzip.PutNextEntry("doc.kml");
XmlTextWriter xmlTW = new XmlTextWriter(outzip,Encoding.UTF8);
xmlTW.Formatting = Formatting.Indented;
xmlTW.WriteStartDocument();
xmlTW.WriteStartElement("kml");
xmlTW.WriteAttributeString("xmlns", "http://www.opengis.net/kml/2.2");
xmlTW.WriteStartElement("Document");
xmlTW.WriteStartElement("Style");
xmlTW.WriteAttributeString("id", "s1");
xmlTW.WriteStartElement("LineStyle");
xmlTW.WriteElementString("color", "7f0000ff");
xmlTW.WriteElementString("width", "3");
xmlTW.WriteEndElement();
xmlTW.WriteEndElement();
xmlTW.WriteElementString("name", "Chicago Transit Map");
xmlTW.WriteElementString("description", "Chicago Transit Authority train lines");
xmlTW.WriteStartElement("Placemark");
xmlTW.WriteElementString("styleUrl", "#s1");
xmlTW.WriteElementString("name", "Chicago Transit Map");
xmlTW.WriteStartElement("LineString");
xmlTW.WriteElementString("altitudeMode", "relative");
xmlTW.WriteElementString("coordinates", "-87.89289951324463,41.97881025520548,0 -87.89184808731079,41.97788506340239,0 -87.89150476455688,41.97762983571196,0");
xmlTW.WriteEndElement();
xmlTW.WriteEndElement();
xmlTW.WriteEndElement();
xmlTW.WriteEndElement(); //Document
xmlTW.WriteEndDocument(); // kml
xmlTW.Flush();
outzip.Close();
}
csetzkorn的稍有变化,在ashx模式下更通用一些,将kml作为字符串
using Ionic.Zip;
public void KMLtoKMZ(HttpContext context, string kml)
{
context.Response.ContentType = "application/vnd.google-earth.kmz";
context.Response.Cache.SetCacheability(System.Web.HttpCacheability.NoCache);
ZipOutputStream outzip = new ZipOutputStream(context.Response.OutputStream);
outzip.EnableZip64 = Zip64Option.Never;
outzip.CompressionLevel = Ionic.Zlib.CompressionLevel.BestCompression;
outzip.PutNextEntry("doc.kml");
StreamWriter sw = new StreamWriter(outzip);
sw.Write(kml);
sw.Flush();
outzip.Flush();
outzip.Close();
}
根据维基百科的说法,你需要称自己为kml doc.kml,并使用ZIP 2.0兼容的Deflate压缩。请您提供wiki链接和/或指定我需要更改的内容,谢谢;有问题吗?我用它来拉拉链。最大的问题是这是否是“传统ZIP 2.0压缩兼容”。我该如何验证这一点?@ZippyV第二个this.Response.Clear;似乎不会引起问题。