ArcGIS Server without ADF （二）在Flash上看地图

上一次已经说了不用ADF开发ArcGIS Server
Web应用的准备工作，有网友不明白为什么要这么做，其实我们的目标就是开发一个在Flash客户端的GIS系统，达到C/S级的交互效果，接近于C/S的功能（主要就看ArcGIS
Server的功能了），但是客户端做到零部署。当然这个目标很艰巨，所以写点东西出来希望大家一起讨论，共同提高Rich Interactive WebGIS的开发水平。
       闲话不说了，开始先建立一个服务，为了以后编辑功能的实现，选择not pooled。成功之后新建一个Fluorine工程，在Web.Config文件中添加ArcGIS Server的Identiy。在App_Code里面添加两个类MapFramework,MapService，然后添加ESRI的一系列引用，注意确保是Serve开发可以引用的程序集，具体可以看帮助里面每个接口的Available，其中MapService中添加using com.TheSilentGroup.Fluorine;MapService类型就是为Flash文件提供服务的类型。其中Mapframework的代码如下

 

///
<summary>

 

/// MapFrameWork 的摘要说明

 

///
</summary>

 

public class MapFrameWork

 

{

 

    protected Identity m_id = null;

 

    protected string m_user;

 

    protected string m_pwd;

 

    protected string m_host;

 

    protected string m_service;

 

    protected int imgWidth;

 

    protected int imgHeight;

 

    protected IServerContext m_sc;

 

    protected IMapServer m_mapServer;

 

    protected IImageDisplay m_imgDisp;

 

    protected IImageDescription m_imgDesp;

 

    protected AGSServerConnection m_agsConn;

 

    protected string m_imgURL;

 

     public MapFrameWork()

 

{

 

         //

 

         // TODO: 在此处添加构造函数逻辑

 

         //

 

m_id = new Identity();

 

 

}

 

 

 

public void InitMapServer(string user, string pwd, string host, string service, int imgWidth,int imgHeight)

 

{

 

m_id = new Identity(user, pwd, host);

 

m_agsConn = new AGSServerConnection(host, m_id);

 

m_agsConn.Connect();

 

        IServerObjectManager som = m_agsConn.ServerObjectManager;

 

m_sc = som.CreateServerContext(service, "MapServer");

 

m_mapServer = m_sc.ServerObject as IMapServer;

 

        IMapServerInfo serverInfo = m_mapServer.GetServerInfo(m_mapServer.DefaultMapName);

 

m_imgDesp = m_sc.CreateObject("esriCarto.ImageDescription") as IImageDescription;

 

m_imgDisp = m_sc.CreateObject("esriCarto.ImageDisplay") as IImageDisplay;

 

m_imgDesp.Display = m_imgDisp;

 

m_imgDisp.Width = imgWidth;

 

m_imgDisp.Height = imgHeight;

 

m_imgDisp.DeviceResolution = 100;

 

        IImageType imgType = m_sc.CreateObject("esriCarto.ImageType") as IImageType;

 

imgType.Format = esriImageFormat.esriImageJPG;

 

imgType.ReturnType = esriImageReturnType.esriImageReturnURL;

 

m_imgDesp.Type = imgType;

 

m_imgURL = m_mapServer.ExportMapImage(serverInfo.DefaultMapDescription, m_imgDesp).URL;

 

}

 

 

    public string ImgURL

 

{

 

        get

 

{

 

            return this.m_imgURL;

 

}

 

}

 

}

 

MapService的代码是酱紫的

[RemotingService("Fluorine sample service")]

 

public class MapService

 

{

 

    protected MapFrameWork m_frame;

 

     public MapService()

 

{

 

         //

 

         // TODO: 在此处添加构造函数逻辑

 

         //

 

m_frame = new MapFrameWork();

 

}

 

    public string InitServer(string user, string pwd, string server, string service, int width, int height)

 

{

 

m_frame.InitMapServer(user, pwd, server, service, width, height);

 

        return m_frame.ImgURL;

 

}

 

}

万事俱备，开始做flash咯！

 

按照上篇的步骤创建好一个Flex Application 把下面的拷进mxml里面

 

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

 

<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" layout="absolute" creati>

 

<mx:Image x="25" y="21" width="640" height="480" id="imgMap"/>

 

<mx:Script>

 

<![CDATA[

 

import mx.controls.Alert;

 

import mx.rpc.events.ResultEvent;

 

import mx.rpc.events.FaultEvent;

 

import mx.rpc.remoting.mxml.RemoteObject;

 

protected var service:RemoteObject;

 

protected function Init():void

 

{

 

service = new RemoteObject("fluorine");

 

service.endpoint = "http://localhost/webwork/ESRIServer/Gateway.aspx";///ESRIServer/Gateway.aspx";

 

service.source = "MapService";

 

service.addEventListener( FaultEvent.FAULT, gotError );

 

service.InitServer.addEventListener( ResultEvent.RESULT, ServerInitComplete );

 

service.InitServer("username","pwd","host","mapServiceName",640,480);

 

//service.source = "ESRIServer.Sample";

 

 

//service.addEventListener( FaultEvent.FAULT, gotError );

 

// service.Echo.addEventListener( ResultEvent.RESULT, ServerInitComplete );

 

//service.Echo("brune");

 

 

}

 

 

private function gotError( fault:FaultEvent ):void

 

{

 

//serverResult.text = "Error";

 

Alert.show( "Server reported an error - " + fault.fault.faultString, "Error" );

 

}

 

 

private function ServerInitComplete( result:ResultEvent ):void

 

{

 

this.imgMap.source = result.result.toString();

 

//Alert.show(result.result.toString());

 

}

 

]]>

 

</mx:Script>

 

</mx:Application>

 

下面运行吧，很快就能看到在flash文件里面的地图了哦！

 

从上面代码看出，ArcGIS Server其实就是在服务器端运行的AO，根据ESRI的技术人员给我的解答，ADF命名空间下的功能几乎都是通过SOAP服务封装提供的，功能有限，大家做到高级功能的时候还是需要通过AO去解决！