On 8 June 2011 06:26, Jon Britton <[email protected]> wrote: > Hi, > I'm trying to use GWT-OpenLayers to carry out some simple WFS requests. > However, I'm having some trouble with OpenLayers not displaying my data. > I'm using GeoServer as my WFS, which names its layers like "sf:roads", where > "sf" is the namespace. This first example, where I specify the namespace > URL, works fine: > ### JAVA CODE ### > WFSProtocolOptions wfsProtocolOptions = new WFSProtocolOptions(); > wfsProtocolOptions.setUrl("http://li199-25.members.linode.com:8080/geoserver/wfs";); > wfsProtocolOptions.setFeatureType("roads"); > wfsProtocolOptions.setFeatureNameSpace("http://www.openplans.org/spearfish";); > wfsProtocolOptions.setSrsName("EPSG:4326"); > wfsProtocolOptions.setVersion("1.1.0"); > This results in OpenLayers making the following XML request, which leads to > a valid response which is displayed correctly: > ### XML GetFeature REQUEST ### > <wfs:GetFeature xmlns:wfs="http://www.opengis.net/wfs" service="WFS" version="1.1.0" xsi:schemaLocation="http://www.opengis.net/wfs > http://schemas.opengis.net/wfs/1.1.0/wfs.xsd" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance";> > <wfs:Query typeName="feature:roads" srsName="EPSG:4326" xmlns:feature="http://www.openplans.org/spearfish";></wfs:Query> > </wfs:GetFeature> > However, this next example does not work. Here, I'm only specifying the full > layer title "sf:road" and not specifying the namespace. > ### JAVA CODE ### > WFSProtocolOptions wfsProtocolOptions = new WFSProtocolOptions(); > wfsProtocolOptions.setUrl("http://li199-25.members.linode.com:8080/geoserver/wfs";); > wfsProtocolOptions.setFeatureType("sf:roads"); > wfsProtocolOptions.setSrsName("EPSG:4326"); > wfsProtocolOptions.setVersion("1.1.0"); > This results in the following XML request being sent. GeoServer handles this > request fine and returns a valid FeatureCollection (as far as I can tell, > it's exactly the same as the previous example). However, for some reason > OpenLayers just won't display it! > ### XML GetFeature REQUEST ### > <wfs:GetFeature xmlns:wfs="http://www.opengis.net/wfs"; service="WFS" > version="1.1.0" > xsi:schemaLocation="http://www.opengis.net/wfs http://schemas.opengis.net/wfs/1.1.0/wfs.xsd"; > xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance";><wfs:Query > typeName="sf:streams" srsName="EPSG:4326"/></wfs:GetFeature> > Does anyone have any idea why OpenLayers won't display the results of this > kind of request?
It is GeoServer that is refusing to handle the second request not OpenLayers (check the log file or firebug) - in the second case you have a namespace (sf) that GeoServer can't process since you haven't defined it. If you look at the first request you'll see xmlns:feature="http://www.openplans.org/spearfish"; which is what GeoServer uses to work out which roads features you want. Ian -- Ian Turton _______________________________________________ Users mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/openlayers-users
