OGC标准介绍 13

· DescribeFeatureType 操作

1. KVP格式请求

DescribeFeatureType操作需要以下的参数：

参数	是否必须	默认值
VERSION	是	1.1.0
SERVICE	是	WFS
REQUEST=DescribeFeatureType	是
TYPENAME
OUTPUTFORMAT		text/xml; subtype=gml/3.1.1

以下是一个WFS使用KVP格式的DescribeFeatureType操作示例：

http://www.someserver.com/wfs?

SERVICE=WFS&

VERSION=1.1.0&

REQUEST=DescribeFeatureType&

TYPENAME=TreesA_1M,BuiltUpA_1M

2. XML格式请求

以下是一个WFS使用XML格式的DescribeFeatureType操作示例：

xml version="1.0" ?>




<
DescribeFeatureType
 version
="1.1.0"
 service
="WFS"




outputFormat
="text/xml; subtype=gml/3.1.1"
 xmlns
="http://www.opengis.net/wfs"




xmlns
:myns
="http://www.myserver.com/myns"
 xmlns
:xsi
="http://www.w3.org/2001/XMLSchema-instance"




xsi
:schemaLocation
="http://www.opengis.net/wfs ../wfs/1.1.0/WFS.xsd"
>




<
TypeName
>
myns:Person TypeName > 
 
  DescribeFeatureType >  

 

3. 响应示例

以下是一个WFS的DescribeFeatureType操作的响应示例：

xml version="1.0" ?>




<
wfs
:FeatureCollection
 xmlns
="http://www.someserver.com/myns"




xmlns
:myns
="http://www.someserver.com/myns"
 xmlns
:wfs
="http://www.opengis.net/wfs"




xmlns
:gml
="http://www.opengis.net/gml"
 xmlns
:xsi
="http://www.w3.org/2001/XMLSchema-instance"




xsi
:schemaLocation
="http://www.opengis.net/wfs ../wfs/1.1.0/WFS.xsd
 
 http://www.someserver.com/myns ex10.xsd"
>




<
gml
:boundedBy
>




<
gml
:Envelope
>




<
gml
:coord
>




<
gml
:X
>
10 gml :X > 
 
 < gml :Y > 10 gml :Y > 
 
  gml :coord > 
 
 < gml :coord > 
 
 < gml :X > 20 gml :X > 
 
 < gml :Y > 20 gml :Y > 
 
  gml :coord > 
 
  gml :Envelope > 
 
  gml :boundedBy > 
 
 < gml :featureMember > 
 
 < Person > 
 
 < myns :lastName > Smith myns :lastName > 
 
 < myns :firstName > Fred myns :firstName > 
 
 < myns :age > 35 myns :age > 
 
 < myns :sex > Male myns :sex > 
 
 < myns :location > 
 
 < gml :Point > 
 
 < gml :pos > 15 15 gml :pos > 
 
  gml :Point > 
 
  myns :location > 
 
 < myns :mailAddress > 
 
 < myns :Address > 
 
 < myns :streetName > Main St. myns :streetName > 
 
 < myns :streetNumber > 5 myns :streetNumber > 
 
 < myns :city > SomeCity myns :city > 
 
 < myns :province > Someprovince myns :province > 
 
 < myns :postalCode > X1X 1X1 myns :postalCode > 
 
 < myns :country > Canada myns :country > 
 
 < myns :Address > 
 
  myns :mailAddress > 
 
  Person > 
 
  gml :featureMember > 
 
  wfs :FeatureCollection >                         

 

· GetFeature 操作

1. KVP格式请求

GetFeature操作需要以下的参数：

参数	是否必须	默认值
VERSION	是	1.1.0
SERVICE	是	WFS
REQUEST=GetFeature	是
TYPENAME	是
OUTPUTFORMAT		text/xml; subtype=gml/3.1.1
BBOX
FILTER
SORTBY
MAXFEATURES
PROPERTYNAME
SRSNAME
FEATUREID
EXPIRY
RESULTTYPE		results
FEATUREVERSION

以下是一个WFS使用KVP格式的GetFeature操作示例：

http://www.someserver.com/wfs？

SERVICE=WFS&

VERSION=1.1.0&

REQUEST=GetFeature&

PROPERTYNAME=InWaterA_1M/wkbGeom,InWaterA_1M/tileId&

TYPENAME=InWaterA_1M&

FILTER=InWaterA_1M/wkbGeom

10,10

20 20

2. XML格式请求

以下是一个WFS使用XML格式的GetFeature操作示例：

xml version="1.0" ?>




<
GetFeature
 version
="1.1.0"
 service
="WFS"
 handle
="Query01"




xmlns
="http://www.opengis.net/wfs"
 xmlns
:ogc
="http://www.opengis.net/ogc"




xmlns
:gml
="http://www.opengis.net/gml"
 xmlns
:myns
="http://www.someserver.com/myns"




xmlns
:xsi
="http://www.w3.org/2001/XMLSchema-instance"




xsi
:schemaLocation
="http://www.opengis.net/wfs ../wfs/1.1.0/WFS.xsd"
>




<
Query
 typeName
="myns:Hydrography"
>




<
wfs
:PropertyName
>
myns:geoTemp wfs :PropertyName > 
 
 < wfs :PropertyName > myns:depth wfs :PropertyName > 
 
 < ogc :Filter > 
 
 < ogc :Not > 
 
 < ogc :Disjoint > 
 
 < ogc :PropertyName > myns:geoTemp ogc :PropertyName > 
 
 < gml :Envelope srsName ="EPSG:63266405" > 
 
 < gml :lowerCorner > 
 
 -57.9118 46.2023
 
 < gml :lowerCorner > 
 
 < gml :upperCorner > -46.6873 51.8145 gml :upperCorner > 
 
  gml :Envelope > 
 
  ogc :Disjoint > 
 
  ogc :Not > 
 
  ogc :Filter > 
 
  Query > 
 
  GetFeature >          

 

3. 响应示例

以下是一个WFS的GetFeature操作的响应示例：

xml version="1.0" ?>




<
wfs
:FeatureCollection
 xmlns
="http://www.someserver.com/myns"




xmlns
:wfs
="http://www.opengis.net/wfs"
 xmlns
:gml
="http://www.opengis.net/gml"




xmlns
:xsi
="http://www.w3.org/2001/XMLSchema-instance"




xsi
:schemaLocation
="http://www.someserver.com/myns Hydrography.xsd
 
 http://www.opengis.net/wfs ../wfs/1.1.0/WFS.xsd"
>




<
gml
:boundedBy
>




<
gml
:Envelope
 srsName
="http://www.opengis.net/gml/srs/epsg.xml#63266405"
>




<
gml
:lowerCorner
>
10 10 gml :lowerCorner > 
 
 < gml :upperCorner > 20 20 gml :upperCorner > 
 
  gml :Envelope > 
 
  gml :boundedBy > 
 
 < gml :featureMember > 
 
 < HydrographyHydrography gml :id ="HydrographyHydrography.450" > 
 
 < geoTemp > 
 
 < gml :Point srsName ="http://www.opengis.net/gml/srs/epsg.xml#63266405" > 
 
 < gml :pos > 10 10 gml :pos > 
 
  gml :Point > 
 
  geoTemp > 
 
 < depth > 565 depth > 
 
  HydrographyHydrography > 
 
  gml :featureMember > 
 
 < gml :featureMember > 
 
 < HydrographyHydrography gml :id ="HydrographyHydrography.450" > 
 
 < geoTemp > 
 
 < gml :Point srsName ="http://www.opengis.net/gml/srs/epsg.xml#63266405" > 
 
 < gml :pos > 10 11 gml :pos > 
 
  gml :Point > 
 
  geoTemp > 
 
 < depth > 566 depth > 
 
  HydrographyHydrography > 
 
  gml :featureMember > 
 
  wfs :FeatureCollection >