ArcIMS - GET_IMAGE

Posted In: ArcIMS , GIS . By 卡西卡

.NET Link, ArcXML

using ESRI.ArcIMS.Server;

ServerConnection oConn = new ServerConnection();
oConn.Host = "localhost";
oConn.ServiceName = "edbims";
oConn.AppServerPort = 5300;
oConn.Scheme = Scheme.TCP;

System.Text.StringBuilder sAXLText = new System.Text.StringBuilder();
sAXLText.Append("<?xml version=\"1.0\" encoding=\"UTF-8\"?><ARCXML version=\"1.1\">");
sAXLText.Append("<REQUEST><GET_IMAGE><PROPERTIES>");
// 指定輸出圖檔的寬與高
sAXLText.AppendFormat("<IMAGESIZE width='{0}' height='{1}' />", imgMap.Width.Value , imgMap.Height.Value );
// 指定輸出地圖的範圍
sAXLText.AppendFormat("<ENVELOPE minx='{0}' miny='{1}' maxx='{2}' maxy='{3}' />", minX,minY,maxX,maxY);
sAXLText.Append("</PROPERTIES></GET_IMAGE></REQUEST></ARCXML>");

string response = oConn.Send(sAXLText.ToString());

System.Xml.XmlDocument axlResponse = new System.Xml.XmlDocument();
axlResponse.LoadXml(response); 
if (axlResponse.GetElementsByTagName("OUTPUT").Count == 1)
{ 
 System.Xml.XmlNodeList nodeOutput = axlResponse.GetElementsByTagName("OUTPUT");
 // 指定最後的圖檔URL
 imgMap.ImageUrl = nodeOutput[0].Attributes["url"].Value;
} // if

相關DLL

ESRI.ArcIMS.Server.dll
ESRI.ArcIMS.Server.TCP.dll

重點在於將圖檔大小和地圖範圍填入XML中傳給ArcIMS Server，並解析回傳的結果。

送出
<?xml version="1.0" encoding="UTF-8"?> <ARCXML version="1.1"> <REQUEST> <GET_IMAGE> <PROPERTIES> <IMAGESIZE width='600' height='500' /> <ENVELOPE minx='281113.624997922' miny='2794476.96154711' maxx='319513.624997922' maxy='2765676.96154711' /> </PROPERTIES> </GET_IMAGE> </REQUEST> </ARCXML>

接收
<?xml version="1.0" encoding="UTF-8"?> <ARCXML version="1.1"> <RESPONSE> <IMAGE> <ENVELOPE minx="281113.624997922" miny="2764076.96154711" maxx="319513.624997922" maxy="2796076.96154711" /> <OUTPUT file="F:\ArcIMS\Output\edbims_EMC-AP226763524199.png" url="http://emc-ap2/output/edbims_EMC-AP226763524199.png" /> </IMAGE> </RESPONSE> </ARCXML>

參考資料：

http://gis.ascc.net/ISTIS/tools.html

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