Hi Matthew, It's a normal Ajax Exception which disallows cross-domain requests. The WFS server is probably different than your http server. You should set a proxy file requester on your web server which will receive and forward requests and responses. For few clues, see http://trac.openlayers.org/wiki/FrequentlyAskedQuestions#ProxyHost http://gist.fas.harvard.edu/chgis/?p=14
Have a nice day. Guillaume Matthew Doyle a écrit : > Hi All, > > I am relatively new to OpenLayers, so please forgive me if this is a simple > one. > > I have an instance of OpenLayers 2.5 on my dev server which is happily > loading 3 WMS layers served by MapServer. > Now i have come to include a WFS layer of point based station data (simliar > to towns), which i have tested as a working layer through uDig, but when i > attempt to include it as a WFS layer in OpenLayers i get the following > exception thrown (in firebug): > --------------------------------------------- > [Exception... "'Permission denied to call method XMLHttpRequest.open' when > calling method: [nsIDOMEventListener::handleEvent]" nsresult: "0x8057001e > (NS_ERROR_XPC_JS_THREW_STRING)" location: "<unknown>" data: no > emptyFunction() > getImagesLocation() > emptyFunction() > dispatch("http://ows.bom.gov.au/cgi-bin/mapserver/users/ncc000/latest?typename=IDY03101_metarid&SERVICE=WFS&VE...", > Object method=get) > Class() > nullHandler("http://ows.bom.gov.au/cgi-bin/mapserver/users/ncc000/latest?typename=IDY03101_metarid&SERVICE=WFS&VE...", > null, Object layer=Object position=x=-400,y=-300, function(), > undefined)OpenLayers.js > loadFeaturesForRegion(function(), undefined) > --------------------------------------------- > > > my code is as follows - the variable of interest being stationIDLayer with > {typename:'IDY03101_metarid'} > > > <script type="text/javascript"> > > function init() { > > var map = new OpenLayers.Map('map',{maxResolution: 0.703125} ); > var serviceURL = > "http://ows.bom.gov.au/cgi-bin/mapserver/users/ncc000/latest?"; > > var topogLayer = new OpenLayers.Layer.WMS('Aus 10M Elevation', > serviceURL, {layers: 'free_elevation', format: 'image/png' }, {buffer: 1, > isBaseLayer:true} ); > var ausCoastlineLayer = new OpenLayers.Layer.WMS('Aus Coastline', > serviceURL, {layers: 'free_australia_line', transparent: 'true', format: > 'image/gif' }, {buffer: 1, isBaseLayer: false} ); > var rainfallPolygonLayer = new OpenLayers.Layer.WMS('Rainfall Polygon', > serviceURL, {layers: 'rainfall_polygon', format: 'image/png' }, {buffer: 1, > isBaseLayer:false} ); > map.addLayers([topogLayer, rainfallPolygonLayer, ausCoastlineLayer]); > > var stationIDLayer = new OpenLayers.Layer.WFS('Station ID', serviceURL, > {typename: 'IDY03101_metarid'}, > { > minZoomLevel: 4, > featureNS: 'http://www.openplans.org/topp', > extractAttributes: false > } ); > map.addLayer(stationIDLayer); > > > map.addControl(new OpenLayers.Control.LayerSwitcher()); > map.addControl(new OpenLayers.Control.MousePosition()); > map.addControl(new OpenLayers.Control.OverviewMap()); > map.addControl(new OpenLayers.Control.PanZoomBar()); > > // Set original zoom extent to just cover Australia > map.zoomToExtent(new OpenLayers.Bounds(110.0,-5.0,160.0,-50.0)); > > // avoid pink tiles > OpenLayers.IMAGE_RELOAD_ATTEMPTS = 3; > > > } > > </script> > > > Is my syntax incorrect? Or am i missing some parameter during the creation > of the WFS layer? > > Many thanks in advance. Once again i am new to OL and apologise for any > simple error. Also, if there are any simple tutorials or good examples on > the correct usage of WFS layers, could you please link me to one? > > Cheers and regards, > Matt > _______________________________________________ Users mailing list Users@openlayers.org http://openlayers.org/mailman/listinfo/users