. NET access GeoServer published WMS cross-domain problem solution

Environment: Server geoserver2.4.1

There are cross-domain issues with WMS published by the development Machine Access server, and the research has finally found a solution for two days.

The main idea is to use jquery's Ajax instead of the Groserver request, then forward the WMS's requested address to a. NET handler, using. NET handlers for cross-domain processing.

 function mouseclick (e)  {             var layer = new array ();             layer = map.getlayersbyname ("Simple_geometry");             if  (layer != null)                  for  (var i = 0; i  < layer.length; i++)  {                     map.removelayer (Layer[i]);                 }                              var wms_url =  "Http://10.72.4.219:8089/geoserver/xj/wms?";             var params =                       {                          REQUEST:  "Getfeatureinfo",                           bbox: map.getextent (). Tobbox (),                          WIDTH:  map.size.w,                          height: map.size.h,                          X: e.xy.x,                          y: e.xy.y ,                          SERVICE:  "WMS",                          query_ Layers: map.layers[0].params. layers,                          INFO_FORMAT:  ' text/html ',                          feature_count: 50,                          Layers:  ' Xj:cswl_ Group ',                          Styles:  "",                           format:  "APPLICATION/VND.OGC.GML",                          EXCEPTIONS:  " Application/vnd.ogc.se_xml ",                     // Exception  type                           srs:  ' EPSG:4326 '                       };                       var domainUrl =  "Crossdomain.ashx? Url= ";                      var request = parpreurl (Wms_url, params);                      request  = encodeuricomponent (encodeURIComponent (request));                      $.post (domainUrl +  request,  "", function  (e)  {                          document.getelementbyid (' nodelist ') .innerhtml = e;                      });                                  openlayers.event.stop (e);         }        function  parpreurl (url, paramsobj)  {             for  (var k in paramsobj)  {                 url +=  (k +  "="  + paramsobj[k]  +  "&"); &NBSP;&NBSP;&Nbsp;                          }             return url;        }

If you use Groserver.proxyhost, you will encounter triggerevent undefined problem, so use Jqueyr Ajax instead of Geoserver.request, plus

 public void processrequest (Httpcontext context)          {            context. response.contenttype =  "Text/html";             string url =  "";             url = context. request.querystring["URL"]. ToString ();             url = context. Server.urldecode (URL);             httpwebrequest  loHttp =  (HttpWebRequest) webrequest.create (URL);             loHttp.Timeout = 10000;     // 10  Secs            lohttp.useragent =&nbSP; " Web client ";            httpwebresponse  lowebresponse =  (HttpWebResponse) lohttp.getresponse ();             encoding enc = encoding.getencoding (65001);             StreamReader loResponseStream = new  StreamReader (Lowebresponse.getresponsestream (),  enc);             string lchtml = loresponsestream.readtoend ();             context. Response.Write (lchtml);             Lowebresponse.close ();             Loresponsestream.close ();         }

This will solve the cross-domain problem

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