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Running Open Layer With Jsf And .xhtml File

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I made a jsf project and have the following example from http://docs.openlayers.org/library/introduction.html but as a xhtml file this wouldn't run and as a html file it would run.

Solution 1:

You're executing JavaScript code inline. This means that the JavaScript code is immediately executed as the webbrowser encounters the particular code line. At that point, the <div id="map"> does not exist in the HTML DOM tree yet! The browser namely parses and executes HTML/JS code from top to bottom.

You need to execute that JavaScript code after the <div id="map"> has been created and added to the HTML DOM tree. You could achieve it the following ways:

  1. Move the <script> block in the markup to after the <div id="map">:

    <h:head><scriptsrc="http://openlayers.org/api/OpenLayers.js"></script></h:head><body><divstyle="width:100%; height:100%"id="map"></div><scripttype="text/javascript">var map = newOpenLayers.Map('map');
        var wms = newOpenLayers.Layer.WMS( "OpenLayers WMS",
        "http://vmap0.tiles.osgeo.org/wms/vmap0", {layers: 'basic'} );
        map.addLayer(wms);
        map.zoomToMaxExtent();
    </script></body>

  2. Use window.onload to execute the code only when the browser is finished creating the HTML DOM tree.

    <h:head><scriptsrc="http://openlayers.org/api/OpenLayers.js"></script><scripttype="text/javascript">window.onload = function() {
            var map = newOpenLayers.Map('map');
            var wms = newOpenLayers.Layer.WMS( "OpenLayers WMS",
            "http://vmap0.tiles.osgeo.org/wms/vmap0", {layers: 'basic'} );
            map.addLayer(wms);
            map.zoomToMaxExtent();
        };
    </script></h:head>

This problem is not related to JSF or XHTML. It's just basic HTML/JS.

Solution 2:

I run int the same problem but my extentiong was .jspx. I did like this give it a try. 

<htmlxmlns="http://www.w3.org/1999/xhtml"xmlns:f="http://java.sun.com/jsf/core"xmlns:h="http://java.sun.com/jsf/html"xmlns:ui="http://java.sun.com/jsf/facelets"xmlns:a4j="http://richfaces.org/a4j"xmlns:rich="http://richfaces.org/rich"><head><scriptsrc="http://piturralhpxp:1983/geoserver/openlayers/OpenLayers.js"type="text/javascript"></script><scripttype="text/javascript">
     //<![CDATA[
          var map;
           etc ....
            //]]>
        </script></head><f:view><bodyonload="init()"></body></f:view></html>

Solution 3:

@BalusC is right. Seems like a bug in OpenLayers. JSF Pages crash when the <!DOCTYPE html> declaration is added.

I removed It, and It worked fine anyway. I'm aware It's not the best practice, but It's the only way I found to get this done. Give It a try.

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