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<!-- </span-->TypeName
>


<!-- </span-->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<!-- </span-->gml
:X
>


<
gml
:Y
>
10<!-- </span-->gml
:Y
>


<!-- </span-->gml
:coord
>


<
gml
:coord
>


<
gml
:X
>
20<!-- </span-->gml
:X
>


<
gml
:Y
>
20<!-- </span-->gml
:Y
>


<!-- </span-->gml
:coord
>


<!-- </span-->gml
:Envelope
>


<!-- </span-->gml
:boundedBy
>


<
gml
:featureMember
>


<
Person
>


<
myns
:lastName
>
Smith<!-- </span-->myns
:lastName
>


<
myns
:firstName
>
Fred<!-- </span-->myns
:firstName
>


<
myns
:age
>
35<!-- </span-->myns
:age
>


<
myns
:sex
>
Male<!-- </span-->myns
:sex
>


<
myns
:location
>


<
gml
:Point
>


<
gml
:pos
>
15 15<!-- </span-->gml
:pos
>


<!-- </span-->gml
:Point
>


<!-- </span-->myns
:location
>


<
myns
:mailAddress
>


<
myns
:Address
>


<
myns
:streetName
>
Main St.<!-- </span-->myns
:streetName
>


<
myns
:streetNumber
>
5<!-- </span-->myns
:streetNumber
>


<
myns
:city
>
SomeCity<!-- </span-->myns
:city
>


<
myns
:province
>
Someprovince<!-- </span-->myns
:province
>


<
myns
:postalCode
>
X1X 1X1<!-- </span-->myns
:postalCode
>


<
myns
:country
>
Canada<!-- </span-->myns
:country
>


<
myns
:Address
>


<!-- </span-->myns
:mailAddress
>


<!-- </span-->Person
>


<!-- </span-->gml
:featureMember
>


<!-- </span-->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<!-- </span-->wfs
:PropertyName
>


<
wfs
:PropertyName
>
myns:depth<!-- </span-->wfs
:PropertyName
>


<
ogc
:Filter
>


<
ogc
:Not
>


<
ogc
:Disjoint
>


<
ogc
:PropertyName
>
myns:geoTemp<!-- </span-->ogc
:PropertyName
>


<
gml
:Envelope
 srsName
="EPSG:63266405"
>


<
gml
:lowerCorner
>



-57.9118 46.2023

<
gml
:lowerCorner
>


<
gml
:upperCorner
>
-46.6873 51.8145<!-- </span-->gml
:upperCorner
>


<!-- </span-->gml
:Envelope
>


<!-- </span-->ogc
:Disjoint
>


<!-- </span-->ogc
:Not
>


<!-- </span-->ogc
:Filter
>


<!-- </span-->Query
>


<!-- </span-->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<!-- </span-->gml
:lowerCorner
>


<
gml
:upperCorner
>
20 20<!-- </span-->gml
:upperCorner
>


<!-- </span-->gml
:Envelope
>


<!-- </span-->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<!-- </span-->gml
:pos
>


<!-- </span-->gml
:Point
>


<!-- </span-->geoTemp
>


<
depth
>
565<!-- </span-->depth
>


<!-- </span-->HydrographyHydrography
>


<!-- </span-->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<!-- </span-->gml
:pos
>


<!-- </span-->gml
:Point
>


<!-- </span-->geoTemp
>


<
depth
>
566<!-- </span-->depth
>


<!-- </span-->HydrographyHydrography
>


<!-- </span-->gml
:featureMember
>


<!-- </span-->wfs
:FeatureCollection
>