[OpenLayers-Users] Requesting data problem

Sun Apr 18 04:30:36 EDT 2010

Thanks a lot.

On Sun, Apr 18, 2010 at 1:11 AM, Gabriel Nolasco <
nolasco_gabriel at yahoo.com.br> wrote:

> Hi,
>
> You must install a proxy script to retrieve information from remote domains
> via an XMLHttpRequest.
>
> http://trac.openlayers.org/wiki/FrequentlyAskedQuestions#ProxyHost
>
> Then you can use the class OpenLayers.Format.WMSCapabilities to parse the
> response like this:
>
> var capabilitiesRequest = OpenLayers.Request.GET({
>
>   url: "
> http://labs.metacarta.com/wms/vmap0?request=GetCapabilities&service=WMS",
>   success: parseWmsCapabilities,
>   failure: function(response) {}
> });
>
> var parseWmsCapabilities = function(response) {
>   var wmsParser = new OpenLayers.Format.WMSCapabilities();
>   var wmsCapabilities = wmsParser.read(response.responseText);
>   for(var i=0; i<wmsCapabilities.capability.layers.length; ++i) {
>
>     alert(wmsCapabilities.capability.layers[i].name);
>   }
> }
>
> Best regards,
> Gabriel Nolasco
>
> Hi all,
> I want to get WMSGetCapabilites from server. The URL is
> http://labs.metacarta.com/wms/vmap0?request=GetCapabilities&service=WMSand
> works fine.
>
> But when I "execute" the next code the request never ends or returns me a
> empty response.
>
> Anybody can help me clarifiying me how to get wms capabilities and later
> get
> the available layer names?
>
> Thanks in advance.
>
>   <html>
>     <head>
>         <title></title>
>         <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
>         <script type="text/javascript"
> src='./js/ol/OpenLayers.js'></script>
>         <script type="text/javascript">
>             request = OpenLayers.Request.GET({
>                 url: "
> http://labs.metacarta.com/wms/vmap0?request=GetCapabilities&service=WMS",
>                 success: function(request){
>                     alert(request.responseText);
>                 },
>                 failure: function(request){
>                     alert('BOOOOOO!');
>                 }
>
>             });
>         </script>
>
>     </head>
>     <body>
>         the body content
>     </body>
> </html>
>
>
>

-- 
|-----------------------------------------------------------
| http://www.astracanada.net
| http://acuriousanimal.orggeo.net
|-----------------------------------------------------------
| http://acuriousanimal.blogspot.com
| http://theballoonproject.blogspot.com
|-----------------------------------------------------------
|  _      __
| /_|    (  _  _/'_ _
|(  |.  __)(//)//(/(/()
|                   _/
|-----------------------------------------------------------
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://lists.osgeo.org/pipermail/openlayers-users/attachments/20100418/618e6640/attachment.html