Dcom代理 Server

时间：2010-12-18 来源：醉意人间

本地连接可以使用Dcom代理，而本质上DCOM代理是利用AO对象和ArcGIS Server 服务器对象打交道。所以本地连接，客户端就要有AO对象，当然也可以直接利用AO API(可以认为是远端服务器对象的AO代理），而不使用Dcom代理，（但是使用Dcom代理，因为代理和值对象是在客户端，所以要比AO快（AO proxies的所有操作都是在远程调用的基础上完成的，但是利用AO我们可以访问到远端的细粒度的AO对象）），而代理属于Soap的范畴，而获取Dcom代理，目前我发现两种方法，如下：

ESRI.ArcGIS.ADF.Identity id = new ESRI.ArcGIS.ADF.Identity(username, password, domain);

ESRI.ArcGIS.ADF.ArcGISServer.MapServerDcomProxy mapserver_dcom =

(MapServerDcomProxy) MapServerDcomProxy.Create(SOMname, servicename, id);

// do something with the DCOM proxy

mapserver_dcom.Dispose();

ESRI.ArcGIS.ADF.Connection.AGS.AGSServerConnection connection = null;
ESRI.ArcGIS.Server.IServerContext serverContext = null;

try
{
    connection = new ESRI.ArcGIS.ADF.Connection.AGS.AGSServerConnection();

    connection.Host = "localhost";
    connection.Connect();

    ESRI.ArcGIS.Server.IServerObjectManager serverObjectManager = connection.ServerObjectManager;

    serverContext = serverObjectManager.CreateServerContext("MyMapService", "MapServer");

    ESRI.ArcGIS.ADF.ArcGISServer.MapServerDcomProxy mapservice = new
        ESRI.ArcGIS.ADF.ArcGISServer.MapServerDcomProxy(serverContext, true);

    ESRI.ArcGIS.ADF.ArcGISServer.MapServerInfo mapinfo = mapservice.GetServerInfo(mapservice.GetDefaultMapName());
    ESRI.ArcGIS.ADF.ArcGISServer.MapDescription mapdesc = mapinfo.DefaultMapDescription;

    ESRI.ArcGIS.ADF.ArcGISServer.ImageType imgtype = new ESRI.ArcGIS.ADF.ArcGISServer.ImageType();
    imgtype.ImageFormat = ESRI.ArcGIS.ADF.ArcGISServer.esriImageFormat.esriImagePNG;
    imgtype.ImageReturnType = ESRI.ArcGIS.ADF.ArcGISServer.esriImageReturnType.esriImageReturnURL;

    ESRI.ArcGIS.ADF.ArcGISServer.ImageDisplay imgdisp =
        new ESRI.ArcGIS.ADF.ArcGISServer.ImageDisplay();
    imgdisp.ImageHeight = 500;
    imgdisp.ImageWidth = 500;
    imgdisp.ImageDPI = 96;

    ESRI.ArcGIS.ADF.ArcGISServer.ImageDescription imgdesc =
        new ESRI.ArcGIS.ADF.ArcGISServer.ImageDescription();
    imgdesc.ImageDisplay = imgdisp;
    imgdesc.ImageType = imgtype;

    ESRI.ArcGIS.ADF.ArcGISServer.MapImage mapimg = mapservice.ExportMapImage(mapdesc, imgdesc);

    System.Net.HttpWebRequest webreq = System.Net.WebRequest.Create(mapimg.ImageURL) as HttpWebRequest;
    System.Net.HttpWebResponse webresp = webreq.GetResponse() as HttpWebResponse;
    System.Drawing.Image img = System.Drawing.Image.FromStream(webresp.GetResponseStream());
}
catch (Exception ex){}
finally
{
    serverContext.ReleaseContext();
    connection.Dispose();
}