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Re: [geowebcache-users] question : GWC did not display my WMS layer
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From: Arne K. <ar...@ti...> - 2010-10-02 08:50:33
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You are making it too difficult to reproduce the problem, at least I don't have time to go through a procedure like that. The most common problem is that the map options do not match what the grid in GWC is defined to be, so you get errors returned and they are usually rendered as pink tiles. Here it's not possible to tell whether any tiles are requested at all. Try looking at the requests using a tool like Firebug (Firefox plugin, use the Net tab inside the tool), see what is requested from GWC and what is returned. -Arne On 10/2/10 4:38 AM, Bino Oetomo wrote: > Dear All. > > First, here is my basic openlayer html : > ------START---- > <!DOCTYPE html> > <html> > <head> > <title>OpenLayers Google (v3) Layer Example</title> > <link rel="stylesheet" > href="/openlayers/theme/default/style.css" type="text/css"> > <link rel="stylesheet" > href="/openlayers/theme/default/google.css" type="text/css"> > <link rel="stylesheet" href="/openlayers/examples/style.css" > type="text/css"> > <script > src="http://maps.google.com/maps/api/js?sensor=false"></script> > <script src="/openlayers/lib/OpenLayers.js"></script> > <script type="text/javascript"> > > var map; > > // Avoid pink error tiles > OpenLayers.IMAGE_RELOAD_ATTEMPTS = 3; > OpenLayers.Util.onImageLoadErrorColor = "transparent"; > > function init(){ > // Map is in mercator this time, so over-ride the default > // options that assume lat/lon. > var options = { > projection: new OpenLayers.Projection("EPSG:900913"), > displayProjection: new > OpenLayers.Projection("EPSG:4326"), > units: "m", > numZoomLevels: 20, > maxResolution: 156543.0339, > maxExtent: new OpenLayers.Bounds(10325843.277142, > -1394213.708171, 16871298.882086, 1110474.834229), > controls: [new OpenLayers.Control.MouseDefaults(), > new > OpenLayers.Control.MousePosition({numdigits:2}), > new OpenLayers.Control.PanZoomBar(), > //new > OpenLayers.Control.Permalink('permalink'), > //new OpenLayers.Control.Scale(), > new OpenLayers.Control.ScaleLine(), > new OpenLayers.Control.LayerSwitcher() > ] > > }; > // Create the map object > map = new OpenLayers.Map('map', options); > > // create Google Maps layer > var gmap = new OpenLayers.Layer.Google( > "Google Streets", // the default > {type: google.maps.MapTypeId.ROADMAP, > 'sphericalMercator': true, numZoomLevels: 20} > ); > > > // create WMS > var wmslayer0 = new OpenLayers.Layer.WMS( > "Yogya", > "http://192.168.10.233:8080/geoserver/wms", > {'layers': 'spoin:spoin0', 'format':'image/png', > 'transparent':'true'}, > {'opacity': 1.0, 'isBaseLayer': false, 'visibility': > true} > ); > var wmslayer1 = new OpenLayers.Layer.WMS( > "Yogya", > "http://192.168.10.233:8080/geoserver/wms", > {'layers': 'spoin:spoin1', 'format':'image/png', > 'transparent':'true'}, > {'opacity': 1.0, 'isBaseLayer': false, 'visibility': > true} > ); > var wmslayer2 = new OpenLayers.Layer.WMS( > "Yogya", > "http://192.168.10.233:8080/geoserver/wms", > {'layers': 'spoin:spoin2', 'format':'image/png', > 'transparent':'true'}, > {'opacity': 1.0, 'isBaseLayer': false, 'visibility': > true} > ); > var wmslayer3 = new OpenLayers.Layer.WMS( > "Yogya", > "http://192.168.10.233:8080/geoserver/wms", > {'layers': 'spoin:spoin3', 'format':'image/png', > 'transparent':'true'}, > {'opacity': 1.0, 'isBaseLayer': false, 'visibility': > true} > ); > var wmslayer4 = new OpenLayers.Layer.WMS( > "Yogya", > "http://192.168.10.233:8080/geoserver/wms", > {'layers': 'spoin:spoin4', 'format':'image/png', > 'transparent':'true'}, > {'opacity': 1.0, 'isBaseLayer': false, 'visibility': > true} > ); > > var wmslayer5 = new OpenLayers.Layer.WMS( > "Yogya", > "http://192.168.10.233:8080/geoserver/wms", > {'layers': 'spoin:lines_v', 'format':'image/png', > 'transparent':'true'}, > {'opacity': 0.75, 'isBaseLayer': false, > 'visibility': true} > ); > > map.addLayers([gmap, wmslayer0, wmslayer1, wmslayer2, > wmslayer3, wmslayer4]); > //map.addControl(new OpenLayers.Control.LayerSwitcher()); > // Coordinate display at bottom of map > //map.addControl(new OpenLayers.Control.MousePosition()); > // Zoom to Yogya > var point = new OpenLayers.LonLat(110.3667, -7.8000); > // Need to convert zoom point to mercator too > point.transform(new OpenLayers.Projection("EPSG:4326"), > map.getProjectionObject()); > > map.setCenter(point, 10); > > } > </script> > </head> > > <body onload="init()"> > <h1 id="title">Google (v3) Layer Example</h1> > <p id="shortdesc"> > Demonstrate use the Google Maps v3 API. > </p> > <div id="map" class="mediummap"></div> > <div id="docs"> > <p> > WMS Methode :<br> > http://192.168.10.233:8080/geoserver/wms > </p> > </div> > </body> > </html> > > ------STOP------ > I Save it as ws03.html, and copy it to : ws03gwc.html, ws03xgwc.html > Next : > 1. In ws03gwc.html : Replace all instance of > "http://192.168.10.233:8080/geoserver/wms" with > "http://192.168.10.233:8080/geoserver/geowebcache/service/wms", to make > it call the GeoServer via bundled GeoWebCache > > 2. In ws03xgwc.html : Replace all instance of > "http://192.168.10.233:8080/geoserver/wms" with > "http://192.168.10.233:8080/geowebcache/service/wms", to make it call > the GeoServer via "external" GeoWebCache installed at the same Tomcat6 > > Now I have 3 similar openlayer html with 3 different WMS call methode each. > When I tried to open all of that 3 files ... I got 2 different results. > A. The one with standard call to WMS (ws03.html, with > "http://192.168.10.233:8080/geoserver/wms"), display my wms layers (That > "green" objects) correctly. > B. Two others (ws03gwc.html and ws03xgwc.html) did not display my wms > layers. > > To make visual comparison, please see http://i56.tinypic.com/2hi359f.png > > Kindly please give me any of your enlightment to fix the problem > > Sincerely > -bino- > > ------------------------------------------------------------------------------ > Start uncovering the many advantages of virtual appliances > and start using them to simplify application deployment and > accelerate your shift to cloud computing. > http://p.sf.net/sfu/novell-sfdev2dev > _______________________________________________ > Geowebcache-users mailing list > Geo...@li... > https://lists.sourceforge.net/lists/listinfo/geowebcache-users |
