第一章 使用ArcGIS Engine 管理ArcGIS Server
1.1 原因
在10版本以及之前的版本中，有一些用戶通過ArcGIS Engine來管理ArcGIS Server，比如發佈服務，停止服務等，對服務的管理是通過DCOM方式的，而在10.1中ArcGIS 不支持DOCM方式的連接，。如果你在代碼中使用了Server庫中的GISServerConnection或者GISClient庫中的AGSServerConnection，在ArcGIS Server 10.1環境下，這些代碼必須移除，如下面的代碼：
如果強行執行，那麼會有下面的錯誤：
1.2 解決
ArcGIS Server在10.1版本中提供了ADMIN API，只要我們通過http請求構造相應的參數就行，對於ArcGIS Server的連接，我們可以看下desktop是如何連接的：
從這兩個圖中就可以看出，在選擇連接Server的時候，選擇角色，選擇服務的類型（SDS和ArcGIS Server），在10版本以及之前的版本的時候跟這個有較大區別，連接ArcGIS 10.1 for Server的代碼如下（註釋已經寫出）：
public IServerObjectAdmin ConnectAGS(string host, string username, string password)
{
try
{
IPropertySet propertySet = new PropertySetClass();
propertySet.SetProperty("url", host);
propertySet.SetProperty("ConnectionMode", esriAGSConnectionMode.esriAGSConnectionModeAdmin);
propertySet.SetProperty("ServerType", esriAGSServerType.esriAGSServerTypeDiscovery);
propertySet.SetProperty("user", username);
propertySet.SetProperty("password", password);
propertySet.SetProperty("ALLOWINSECURETOKENURL", true); //設置爲false會彈出一個警告對話框
IAGSServerConnectionName3 pConnectName = new AGSServerConnectionNameClass() as IAGSServerConnectionName3;//10.1新增接口
pConnectName.ConnectionProperties = propertySet;
IAGSServerConnectionAdmin pAGSAdmin = ((IName)pConnectName).Open() as IAGSServerConnectionAdmin;
token = GenerateAGSToken_RESTAdmin(host, "arcgis", "arcgis");
return pAGSAdmin.ServerObjectAdmin;
}
catch (Exception exc)
{
Console.WriteLine("連接失敗: {0}. Message: {1}", host, exc.Message);
return null ;
}
}
ConnectAGS("http://192.168.110.136:6080/arcgis/admin", "arcgis", "arcgis");
當獲得了IAGSServerConnectionAdmin 這個接口我們進而可以獲取IServerObjectAdmin，IServerObjectAdmin接口，
在幫助中看到了IDiscoveryServerObjectAdmin接口，該接口的方法和屬性如下：
我欣喜若狂，因爲這些和ArcGIS Server的Admin幾乎是對應的，實現該接口的類不能被實例化，必須通過其他對象獲取。但是不幸的是我在dll中並沒有發現這個。
1.2.1 一個猜想
既然這個接口不能自己new，必須通過其他的實例化，那麼這個對象是誰？
我們很自然的想到應該在連接成功之後就返回這個對象，該對象實現的接口如下：
我們注意下IRESTServerObjectAdmin 接口，字面意思就是通過rest方式跟Server打交道，而該接口只被一個類實現，該類就DiscoveryServerObjectAdmin
如果連接成功返回的真是DiscoveryServerObjectAdmin對象，那麼我們QI到IRESTServerObjectAdmin上是沒有問題的，結果正如我猜想的一樣，有圖爲證：
以上是我的個人猜想，但是不知道爲什麼dll中沒找到這個接口，還是ESRI故意將這個接口隱藏起來了。
1.3 AO操作
當連接上ArcGIS Server，我們獲取了IAGSServerConnectionAdmin，通過該對象我們獲取了IServerObjectAdmin,通過該對象可以對Server進行管理1.3.1 更改實例數
private void ChangInstance(IServerObjectAdmin pSAdmin, IServerObjectConfiguration pConf, int pMin, int pMax){
IEnumServerObjectConfiguration pEnServerConf = pSAdmin.GetConfigurations();
IServerObjectConfiguration pSConf = pEnServerConf.Next();
IServerObjectConfiguration pSOConfig = null;
while (pSConf != null)
{
if (pSConf.Name == pConf.Name && pSConf.TypeName == pConf.TypeName)
{
pSOConfig = pSConf;
break;
}
pSConf = pEnServerConf.Next();
}
if (pSConf != null)
{
pSConf.MinInstances = pMin;
pSOConfig.MaxInstances = pMax;
pSAdmin.UpdateConfiguration(pSOConfig);
}
}
1.3.2 停止服務
pServerAdmin.StopConfiguration("Flow", "MapServer");1.3.3 刪除服務
pServerAdmin.DeleteConfiguration("BusSimulation/DataPrep", "MapServer");//如果自己建立了目錄請按照這種方式寫，不然出錯1.4 REST方式操作
ArcGIS 10.1 for Server可以通過http請求的方式訪問，server接到請求後，然後響應，響應的結果是json格式的，對json格式我們可以自己去解析，但是這個很麻煩，在10.1中增加了很多對json格式處理的接口IJSONReader2，IJSONWriter等很多，我在這裏偷懶直接使用了AO中自帶的接口，如果不用AO中的這些接口，自己藉助一些json的解析工具如：JSON.NET也是可以的。1.4.1 獲取token
public string GenerateAGSToken_RESTAdmin(string restAdmin, string username, string password){
try
{
if (restAdmin.EndsWith("\\"))
{
restAdmin = restAdmin.Substring(0, restAdmin.Length - 1);
}
if (restAdmin.EndsWith("services"))
{
restAdmin = restAdmin.Substring(0, restAdmin.Length - 9);
}
string loginUrl = restAdmin + "/generateToken";
WebRequest request = WebRequest.Create(loginUrl);
request.Method = "POST";
string credential = "username=" + username + "&password=" + password + "&client=requestip&expiration=&f=json";
byte[] content = Encoding.UTF8.GetBytes(credential);
request.ContentLength = content.Length;
request.ContentType = "application/x-www-form-urlencoded";
Stream requestStream = request.GetRequestStream();
requestStream.Write(content, 0, content.Length);
requestStream.Close();
WebResponse response = request.GetResponse();
Stream responseStream = response.GetResponseStream();
StreamReader reader = new StreamReader(responseStream);
string result = reader.ReadToEnd();
IJSONReader2 pJsonReader = new JSONReaderClass();
IJSONObject pOb = pJsonReader.ParseJSONString(result) as IJSONObject;
string token;
if (pOb.TryGetValueAsString("token", out token))
{
}
return token;
}
catch { return ""; }
}
//""表示根目錄
public bool DeleteService_RESTAdmin(string restAdmin, string username, string password, string serviceName,string pType,string pFolder )
{
try
{
//string token = GenerateAGSToken_RESTAdmin(restAdmin, username, password);
restAdmin = restAdmin.EndsWith("/") ? restAdmin.Substring(0, restAdmin.Length - 1) : restAdmin;
string serviceUrl = restAdmin + "/services" +pFolder+"/"+ serviceName + "." + pType + "/delete";
WebRequest request = WebRequest.Create(serviceUrl);
string postcontent = "f=pjson&token=" + token;
Byte[] content = Encoding.UTF8.GetBytes(postcontent);
request.ContentLength = content.Length;
request.ContentType = "application/x-www-form-urlencoded";
request.Method = "POST";
Stream requestStream = request.GetRequestStream();
requestStream.Write(content, 0, content.Length);
requestStream.Close();
WebResponse response = request.GetResponse();
Stream responseStream = response.GetResponseStream();
StreamReader reader = new StreamReader(responseStream);
string result = reader.ReadToEnd();
return result.Contains("success");
}
catch { return false; }
}
1.4.2 停止服務
public bool StopService_RESTAdmin(string restAdmin, string username, string password, string serviceName, string pType, string pFolder)
{
try
{
// string token = GenerateAGSToken_RESTAdmin(restAdmin, username, password);
restAdmin = restAdmin.EndsWith("/") ? restAdmin.Substring(0, restAdmin.Length - 1) : restAdmin;
if (pFolder.Length > 0)
{
pFolder = pFolder.StartsWith("/") ? pFolder : "/" + pFolder;
}
string serviceUrl = restAdmin + "/services" +pFolder+"/"+ serviceName + "." + pType + "/stop";
WebRequest request = WebRequest.Create(serviceUrl);
string postcontent = "f=pjson&token=" + token;
Byte[] content = Encoding.UTF8.GetBytes(postcontent);
request.ContentLength = content.Length;
request.ContentType = "application/x-www-form-urlencoded";
request.Method = "POST";
Stream requestStream = request.GetRequestStream();
requestStream.Write(content, 0, content.Length);
requestStream.Close();
WebResponse response = request.GetResponse();
Stream responseStream = response.GetResponseStream();
StreamReader reader = new StreamReader(responseStream);
string result = reader.ReadToEnd();
return result.Contains("success");
}
catch { return false; }
}
1.4.3 啓動服務
public bool StartService_RESTAdmin(string restAdmin, string username, string password, string serviceName,string pServiceType,string pFolder)
{
try
{
// string token = GenerateAGSToken_RESTAdmin(restAdmin, username,password);
restAdmin = restAdmin.EndsWith("/") ? restAdmin.Substring(0, restAdmin.Length - 1) : restAdmin;
if (pFolder.Length > 0)
{
pFolder = pFolder.StartsWith("/") ? pFolder : "/" + pFolder;
}
string serviceUrl = restAdmin + "/services" + pFolder + "/" + serviceName + "." + pServiceType + "/start";//服務名稱+"."+類型
WebRequest request = WebRequest.Create(serviceUrl);
string postcontent = "f=pjson&token=" + token;
Byte[] content = Encoding.UTF8.GetBytes(postcontent);
request.ContentLength = content.Length;
request.ContentType = "application/x-www-form-urlencoded";
request.Method = "POST";
Stream requestStream = request.GetRequestStream();
requestStream.Write(content, 0, content.Length);
requestStream.Close();
WebResponse response = request.GetResponse();
Stream responseStream = response.GetResponseStream();
StreamReader reader = new StreamReader(responseStream);
string result = reader.ReadToEnd();
return result.Contains("success");
}
catch { return false; }
}
1.4.4 獲取服務的目錄，名稱和類型
//目錄，服務名稱,類型
Dictionary<string, Dictionary<string, string>> pServiceType = new Dictionary<string, Dictionary<string, string>>();
Dictionary<string, string> pDic = new Dictionary<string, string>();
public Dictionary<string, Dictionary<string, string>> ListServices_RESTAdmin(string restAdmin, string username, string password, string folder)
{
try
{
//使用WebRequest 發送請求
restAdmin = restAdmin.EndsWith("/") ? restAdmin.Substring(0, restAdmin.Length - 1) : restAdmin;
string serviceUrl = restAdmin + "/" + folder;
WebRequest request = WebRequest.Create(serviceUrl);
string postcontent = "f=json&token=" + token;
// json格式
Byte[] content = Encoding.UTF8.GetBytes(postcontent);
request.ContentLength = content.Length;
//
request.ContentType ="application/x-www-form-urlencoded";
request.Method = "POST";
Stream requestStream = request.GetRequestStream();
requestStream.Write(content, 0, content.Length);
requestStream.Close();
WebResponse response = request.GetResponse();
Stream responseStream = response.GetResponseStream();
StreamReader reader = new StreamReader(responseStream);
string result = reader.ReadToEnd();
int index = result.IndexOf("services");
Dictionary<string, string> pSer = new Dictionary<string, string>();
IJSONReader2 pJsonReader = new JSONReaderClass();
IJSONObject pOb = pJsonReader.ParseJSONString(result) as IJSONObject;
//"folders":["BusSimulation","System","Utilities"]
//根目錄
pServiceType.Add("/", new Dictionary<string, string>());
IJSONArray pFodArr;
if(pOb.TryGetValueAsArray("folders",out pFodArr))
{
for (int i = 0; i < pFodArr.Count; i++)
{
pServiceType.Add(pFodArr.get_Value(i).ToString(), new Dictionary<string, string>());
}
}
if (pOb.MemberExists("services"))
{
object pJs;
if (pOb.TryGetValue("services", out pJs))
{
if (pJs is IJSONArray)
{
IJSONArray pArray = pJs as IJSONArray;
for (int i = 0; i < pArray.Count; i++)
{
if (pArray.get_Value(i) is IJSONObject)
{
IJSONObject pType = pArray.get_Value(i) as IJSONObject;
// {"folderName":"/","serviceName":"GZCache","type":"MapServer","description":""}
string folderName;
//服務的目錄
if(pType.TryGetValueAsString("folderName",out folderName))
{
}
string serviceName;
//服務的名稱
if(pType.TryGetValueAsString("serviceName",out serviceName))
{
}
string AGSType;
//服務的類型
if(pType.TryGetValueAsString("type",out AGSType))
{
}
pServiceType[folderName].Add(serviceName, AGSType);
}
}
}
}
}
}
catch { }
return pServiceType;
}
1.4.5 刪除服務
public bool DeleteService_RESTAdmin(string restAdmin, string username, string password, string serviceName,string pType,string pFolder ){
try
{
//string token = GenerateAGSToken_RESTAdmin(restAdmin, username, password);
restAdmin = restAdmin.EndsWith("/") ? restAdmin.Substring(0, restAdmin.Length - 1) : restAdmin;
if (pFolder.Length > 0)
{
pFolder = pFolder.StartsWith("/") ? pFolder : "/" + pFolder;
}
string serviceUrl = restAdmin + "/services" +pFolder+"/"+ serviceName + "." + pType + "/delete";
WebRequest request = WebRequest.Create(serviceUrl);
string postcontent = "f=pjson&token=" + token;
Byte[] content = Encoding.UTF8.GetBytes(postcontent);
request.ContentLength = content.Length;
request.ContentType = "application/x-www-form-urlencoded";
request.Method = "POST";
Stream requestStream = request.GetRequestStream();
requestStream.Write(content, 0, content.Length);
requestStream.Close();
WebResponse response = request.GetResponse();
Stream responseStream = response.GetResponseStream();
StreamReader reader = new StreamReader(responseStream);
string result = reader.ReadToEnd();
return result.Contains("success");
}
catch { return false; }
}
1.4.6 服務是否停止
public bool GetStatus_RESTAdmin(string restAdmin, string username, string password, string serviceName, string pServiceType, string pFolder){
try
{
// string token = GenerateAGSToken_RESTAdmin(restAdmin, username,password);
restAdmin = restAdmin.EndsWith("/") ? restAdmin.Substring(0, restAdmin.Length - 1) : restAdmin;
string serviceUrl = restAdmin + "/services" + pFolder + "/" + serviceName + "." + pServiceType + "/status";//服務名稱+"."+類型
WebRequest request = WebRequest.Create(serviceUrl);
string postcontent = "f=pjson&token=" + token;
Byte[] content = Encoding.UTF8.GetBytes(postcontent);
request.ContentLength = content.Length;
request.ContentType = "application/x-www-form-urlencoded";
request.Method = "POST";
Stream requestStream = request.GetRequestStream();
requestStream.Write(content, 0, content.Length);
requestStream.Close();
WebResponse response = request.GetResponse();
Stream responseStream = response.GetResponseStream();
StreamReader reader = new StreamReader(responseStream);
string result = reader.ReadToEnd();
return result.Contains("STOPPED");
}
catch { return false; }
}
1.5 小結
在1.3和1.4我們分別用了AO的方式和REST的方式管理了ArcGIS 10.1 for Server，關於兩種方法各有利弊，在這裏我略總結如下：
第二章 使用ArcGIS Engine 訪問ArcGIS Server
2.1 以前是如何訪問的
上面提到了我們以前通過DCOM的方式也就是本地連接來管理ArcGIS Server，而管理ArcGIS Server是通過IAGSServerConnectionAdmin接口，以前我們通過IGISServerConnection接口的connect方法來獲取connect方法只有一個參數就是機器所在的位置，而該方法“隱性”的使用當前操作系統登陸用戶名和密碼去驗證，爲了保證連接的正確，當前的用戶名必須在agsadmin組或者agsuser組，而前者是用來管理Server的，後者是用來訪問Server的服務的，如果當前登陸的操作系統的賬戶不屬於這兩個組，那麼就會報錯，現在這種方式不存在了。private IServerObjectAdmin5 Admin()
{
ESRI.ArcGIS.Server.IGISServerConnection pServerConn = new ESRI.ArcGIS.Server.GISServerConnectionClass();
pServerConn.Connect("esri-LiuYu");
IServerObjectAdmin5 pServerAdim = pServerConn.ServerObjectAdmin as IServerObjectAdmin5;
return pServerAdim;
}
在管理ArcGIS 10.1 for Server的時候我們必須”顯性”的指定用戶名和密碼，所以該接口在10.1的時候肯定是不能用，正如我們開始提到的那樣，會報錯。
2.2 IAGSServerConnection接口還能用嗎？
IAGSServerConnection這個接口也是可以用來連接，該接口被AGSServerConnectionClass類實現，但是這個類是不可以自己實例化的，必須通過其他類創建，這個類實現的接口如下：我們現在用user的身份連接，代碼如下：
public List<IAGSServerObjectName> ConnectUserAGS(string host, string username, string password)
{
try
{
List<IAGSServerObjectName> pList = new List<IAGSServerObjectName>();
IPropertySet propertySet = new PropertySetClass();
propertySet.SetProperty("url", host);
propertySet.SetProperty("ConnectionMode", esriAGSConnectionMode.esriAGSConnectionModeConsumer);
propertySet.SetProperty("user", username);
propertySet.SetProperty("password", password);
//打開連接
// IAGSServerConnectionFactory pFactory = new AGSServerConnectionFactory();
//Type factoryType = Type.GetTypeFromProgID(
// "esriGISClient.AGSServerConnectionFactory");
//IAGSServerConnectionFactory agsFactory = (IAGSServerConnectionFactory)
// Activator.CreateInstance(factoryType);
IAGSServerConnectionName3 pConnectName = new AGSServerConnectionNameClass() as IAGSServerConnectionName3;//10.1新增接口
pConnectName.ConnectionProperties = propertySet;
IAGSServerConnection pConnection = ((IName)pConnectName).Open() as IAGSServerConnection;
//IAGSServerConnection pConnection = pFactory.Open(propertySet, 0);
IAGSEnumServerObjectName pServerObjectNames = pConnection.ServerObjectNames;
pServerObjectNames.Reset();
IAGSServerObjectName agsServerObjectName = pServerObjectNames.Next();
while (agsServerObjectName != null)
{
pList.Add(agsServerObjectName);
agsServerObjectName = pServerObjectNames.Next();
}
return pList;
}
在這裏我取回List中的第一個，然後在MapControl中顯示，代碼如下：
List<IAGSServerObjectName> pList = pServerMnt.ConnectUserAGS("http://192.168.110.136:6080/arcgis/rest/services", "", "");
// IRESTServerObjectAdmin pRest = pServerAdmin as IRESTServerObjectAdmin;
ESRI.ArcGIS.Carto.IMapServerLayer pMapServerLayer = new ESRI.ArcGIS.Carto.MapServerLayerClass();
IName pName = (IName)pList[0];
IAGSServerObject pServerObject = (IAGSServerObject)pName.Open();
IMapServer pMapServer = (IMapServer)pServerObject;
pMapServerLayer.ServerConnect(pList[0], pMapServer.DefaultMapName);
axMapControl1.AddLayer(pMapServerLayer as ILayer);
axMapControl1.Refresh();
效果如下：
看到結果，這個問題已經有了答案了，對於以用戶的身份連接ArcGIS Server的話，我們只需要修改下IPropertySet屬性即可 。