Dear All,
I am a newbie of mapserver and other online mapping technologies. Recently, I
have been struggling to load a TinyOWS WFS Layer to an OpenLayers map. I set
up proxy.cgi, which works fine. I checked TinyOWS using command "tinyows
-check", which also seems to be working. The page
http://.../cgi-bin/tinyows.exe?service=wfs&request=getCapabilities&version=1.1.0&typename=tows:lrtstops
doesn't return any error either. I can also load a mapserver WMS layer into
the OpenLayers Map with no problem. However, no feature from the WFS layer
would show in the OpenLayers map. Since both the WMS and WFS layers are of the
same projection, which is EPSG:2227, I assume that the misspecification of
projection is not likely to be the caprice here. The following is the
JavaScript I used and the response returned. Could someone help me find out
what I did wrong? Many thanks in advance!
OpenLayers.ProxyHost = "/fcgi-bin/proxy.cgi?url=";
function init() {
map = new OpenLayers.Map('map', {
projection: new OpenLayers.Projection("EPSG:2227"),
units: "feet",
maxResolution: "auto",
maxExtent: new OpenLayers.Bounds(6103631,1911230,6186389,1976404),
controls: [
new OpenLayers.Control.PanZoom()
]
});
var wms= new OpenLayers.Layer.WMS(
"parcel",
"http://.../cgi-bin/mapserv.fcgi?MAP=.../Parcel.map";,
{layers: 'Parcel', format: 'image/jpeg'}
);
var wfs = new OpenLayers.Layer.Vector("Editable Features", {
strategies: [new OpenLayers.Strategy.BBOX(), saveStrategy],
projection: new OpenLayers.Projection("EPSG:2227"),
protocol: new OpenLayers.Protocol.WFS({
version: "1.1.0",
srsName: "urn:ogc:def:crs:EPSG::2227",
url: "http://.../cgi-bin/tinyows.fcgi";,
featureNS : "http://roappdev1:8080/";,
featureType: "lrtstops",
geometryName: "the_geom",
outputFormat: "text/xml; subtype=gml/3.1.1",
schema:
"http://.../cgi-bin/tinyows.fcgi?service=wfs&request=DescribeFeatureType&version=1.1.0&typename=tows:lrtstops";
})
});
map.addLayers([wms, wfs]);
---------------------------------------------------------------------------
<ows:ExceptionReport xmlns="http://www.opengis.net/ows";
xmlns:ows="http://www.opengis.net/ows";
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance";
xsi:schemaLocation="http://www.opengis.net/ows
http://schemas.opengis.net/ows/1.0.0/owsExceptionReport.xsd"; version="1.1.0"
language="en">
<ows:Exception exceptionCode="InvalidParameterValue" locator="request">
<ows:ExceptionText>XML request isn't valid</ows:ExceptionText>
</ows:Exception>
</ows:ExceptionReport>
<?xml version='1.0' encoding='UTF-8'?>
<ows:ExceptionReport
xmlns='http://www.opengis.net/ows'
xmlns:ows='http://www.opengis.net/ows'
xmlns:xsi='http://www.w3.org/2001/XMLSchema-instance'
xsi:schemaLocation='http://www.opengis.net/ows
http://schemas.opengis.net/ows/1.0.0/owsExceptionReport.xsd'
version='1.1.0' language='en'>
<ows:Exception exceptionCode='InvalidParameterValue' locator='request'>
<ows:ExceptionText>XML request isn't valid</ows:ExceptionText>
</ows:Exception>
</ows:ExceptionReport>
<wfs:GetFeature xmlns:wfs="http://www.opengis.net/wfs"; service="WFS"
version="1.1.0" outputFormat="text/xml; subtype=gml/3.1.1"
xsi:schemaLocation="http://www.opengis.net/wfs
http://schemas.opengis.net/wfs/1.1.0/wfs.xsd http://myserver/
http://myserver/cgi-bin/tinyows.fcgi?service=wfs&request=DescribeFeatureType&version=1.1.0&typename=tows:lrtstops";
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance";
resultType="results"><wfs:Query typeName="feature:lrtstops"
srsName="urn:ogc:def:crs:EPSG::2227"
xmlns:feature="http://myserver/";><ogc:Filter
xmlns:ogc="http://www.opengis.net/ogc";><ogc:BBOX><ogc:PropertyName>the_geom</ogc:PropertyName><gml:Envelope
xmlns:gml="http://www.opengis.net/gml";
srsName="EPSG:2227"><gml:lowerCorner>6040731.6
1878643</gml:lowerCorner><gml:upperCorner>6249288.4
2008991</gml:upperCorner></gml:Envelope></ogc:BBOX></ogc:Filter></wfs:Query></wfs:GetFeature>
Response Headers
Connection
Keep-Alive
Content-Type
application/xml
Date
Wed, 01 Feb 2012 18:04:29 GMT
Keep-Alive
timeout=5, max=66
Proxy-Connection
Keep-Alive
Server
Apache/2.2.16 (Win32) PHP/5.3.3 mod_fcgid/2.3.6
Transfer-Encoding
chunked
Via
....
Request Headers
Accept
text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
Accept-Charset
ISO-8859-1,utf-8;q=0.7,*;q=0.7
Accept-Encoding
gzip, deflate
Accept-Language
en-us,en;q=0.5
Content-Length
917
Content-Type
application/xml; charset=UTF-8
Cookie
SESSd43c6da11a8841c94fab47ef368714de=576ee6deef9974c049b58c8494e0b122;
__utma=116482309.238053724.1327699956.1327699956.1327709334.2;
__utmz=116482309.1327699956.1.1.utmcsr=(direct)|utmccn=(direct)|utmcmd=(none)
Host
myhost
Proxy-Connection
keep-alive
Referer
http://myserver/.../tinyows_test.html
User-Agent
Mozilla/5.0 (Windows NT 5.1; rv:5.0) Gecko/20100101 Firefox/5.0
By the way, I am using libxml 2.7.3 and openlayers 2.11. The following XML
information is returned from phpinfo().
xml
XML Support
active
XML Namespace Support
active
libxml2 Version
2.7.3
Regards,
Ya
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