在Manage GIS Services时，遇到Server URL项，经查找资料如下：
http://<Web Server Hostname>/<ArcGIS Instance>/services/
<Web Server Hostname> is the hostname of the Web server on which the ArcGIS Server Web services application is deployed.
<ArcGIS Instance> is the name of the virtual directory in which the "services" are made available. Each instance is associated with one SOM. The instance name entered during the ArcGIS Server post-install or using the AddInstance.exe utility.
<ServiceName> is the name of the ArcGIS Server service.
例：
http://<Web Server Hostname>/<ArcGIS Instance>/services/<ServiceName>/<ServiceType>