地址如下：
http://www.onvif.org/onvif/ver10/device/wsdl/devicemgmt.wsdl
http://www.onvif.org/onvif/ver10/event/wsdl/event.wsdl
http://www.onvif.org/onvif/ver10/media/wsdl/media.wsdl
http://www.onvif.org/onvif/ver10/recording.wsdl
http://www.onvif.org/onvif/ver10/display.wsdl
http://www.onvif.org/onvi f/ver10/receiver.wsdl
http://www.onvif.org/onvif/ver10/deviceio.wsdl
http://www.onvif.org/onvif/ver20/ptz/wsdl/ptz.wsdl
http://www.onvif.org/onvif/ver10/search.wsdl
http://www.onvif.org/onvif/ver10/schema/onvif.xsd
