Check the service with ogrinfo
ogrinfo WFS:"https://www.wondermap.it/cgi-bin/qgis_mapserv.fcgi?&map=/home/ubuntu/qgis/projects/Demo_sci_WMS/demo_sci.qgs&SERVICE=WFS&VERSION=1.1.0&REQUEST=GetCapabilities"
Result:
...
Metadata:
PROVIDER_NAME=Wondermap
TITLE=Impianti sciistici Lombardia
1: domini_sciabili (Multi Polygon)
2: impianti_risalita (Multi Line String)
3: piste_sci (Multi Line String)
Find summary of one layer
ogrinfo WFS:"https://www.wondermap.it/cgi-bin/qgis_mapserv.fcgi?&map=/home/ubuntu/qgis/projects/Demo_sci_WMS/demo_sci.qgs&SERVICE=WFS&VERSION=1.1.0&REQUEST=GetCapabilities" domini_sciabili -so
Result
Metadata:
PROVIDER_NAME=Wondermap
TITLE=Impianti sciistici Lombardia
Layer name: domini_sciabili
Metadata:
TITLE=domini sciabili
Geometry: Multi Polygon
Feature Count: 38
Extent: (526875.694200, 5096641.169516) - (615063.094113, 5155811.7
Layer SRS WKT:
PROJCS["WGS 84 / UTM zone 32N",
GEOGCS["WGS 84",
DATUM["WGS_1984",
SPHEROID["WGS 84",6378137,298.257223563,
AUTHORITY["EPSG","7030"]],
AUTHORITY["EPSG","6326"]],
PRIMEM["Greenwich",0,
AUTHORITY["EPSG","8901"]],
UNIT["degree",0.0174532925199433,
AUTHORITY["EPSG","9122"]],
AUTHORITY["EPSG","4326"]],
PROJECTION["Transverse_Mercator"],
PARAMETER["latitude_of_origin",0],
PARAMETER["central_meridian",9],
PARAMETER["scale_factor",0.9996],
PARAMETER["false_easting",500000],
PARAMETER["false_northing",0],
UNIT["metre",1,
AUTHORITY["EPSG","9001"]],
AXIS["Easting",EAST],
AXIS["Northing",NORTH],
AUTHORITY["EPSG","32632"]]
Geometry Column = geometry
gml_id: String (0.0) NOT NULL
Id: Integer (0.0)
CODICE: String (0.0)
SOSTENIBIL: String (0.0)
COMUNE: String (0.0)
DENOMINAZ: String (0.0)
FONTE: String (0.0)
STATO: String (0.0)
Get features with BBOX and save into shapefile
ogr2ogr -f "ESRI Shapefile" -spat 544138 5098446 564138 5108446 wfs_test.shp WFS:"https://www.wondermap.it/cgi-bin/qgis_mapserv.fcgi?&map=/home/ubuntu/qgis/projects/Demo_sci_WMS/demo_sci.qgs&SERVICE=WFS&VERSION=1.1.0&REQUEST=GetCapabilities" domini_sciabili
Check what you got
ogrinfo wfs_test.shp -so
INFO: Open of `wfs_test.shp'
using driver `ESRI Shapefile' successful.
Layer name: wfs_test
Metadata:
DBF_DATE_LAST_UPDATE=2018-12-16
Geometry: Polygon
Feature Count: 1
Extent: (543944.462085, 5096641.169516) - (544546.601519, 5098546.684997)
Layer SRS WKT:
PROJCS["WGS 84 / UTM zone 32N",
GEOGCS["WGS 84",
DATUM["WGS_1984",
SPHEROID["WGS 84",6378137,298.257223563,
AUTHORITY["EPSG","7030"]],
AUTHORITY["EPSG","6326"]],
PRIMEM["Greenwich",0,
AUTHORITY["EPSG","8901"]],
UNIT["degree",0.0174532925199433,
AUTHORITY["EPSG","9122"]],
AUTHORITY["EPSG","4326"]],
PROJECTION["Transverse_Mercator"],
PARAMETER["latitude_of_origin",0],
PARAMETER["central_meridian",9],
PARAMETER["scale_factor",0.9996],
PARAMETER["false_easting",500000],
PARAMETER["false_northing",0],
UNIT["metre",1,
AUTHORITY["EPSG","9001"]],
AXIS["Easting",EAST],
AXIS["Northing",NORTH],
AUTHORITY["EPSG","32632"]]
gml_id: String (80.0)
Id: Integer (9.0)
CODICE: String (80.0)
SOSTENIBIL: String (80.0)
COMUNE: String (80.0)
DENOMINAZ: String (80.0)
FONTE: String (80.0)
STATO: String (80.0)
For attribute queries use ogr2ogr with -where or -sql as documented https://www.gdal.org/ogr2ogr.html. I suggest to read also the WFS driver manual https://gdal.org/drivers/vector/wfs.html.