GIS学习记录(五)：OpenLayers显示Google地图
使用Google api v2版本需要域名对应的key, v3版本api可以直接使用
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<script src="http://maps.google.com/maps/api/js?v=3.6&sensor=false"></script>
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例子：
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<!DOCTYPE html><html><head><title>Google</title><meta http-equiv="content-type" content="text/html; charset=UTF-8"><link rel="stylesheet" href="css/style.css" type="text/css" /><link rel="stylesheet" href="css/pageStyle.css" type="text/css" /><script type="text/javascript" src="js/OpenLayers/lib/OpenLayers.js"></script><script src="http://maps.google.com/maps/api/js?v=3.6&sensor=false"></script><script type="text/javascript">var map, layer_street;function init() {// Creating the Map Viewermap = new OpenLayers.Map("map",{maxResolution:'auto',maxExtent: new OpenLayers.Bounds( -128 * 156543.03390625, -128 * 156543.03390625, 128 * 156543.03390625, 128 * 156543.03390625 ), displayProjection: new OpenLayers.Projection("EPSG:4326")});layer_street = new OpenLayers.Layer.Google( "Google Streets", // the default { numZoomLevels: 20 , projection: "EPSG:900913", });map.addLayer(layer_street);map.zoomToMaxExtent();map.setCenter(new OpenLayers.LonLat(12945347.18614,4859501.42103), 13);map.addControl(new OpenLayers.Control.LayerSwitcher());map.addControl(new OpenLayers.Control.MousePosition());}</script></head><body onload="init()"><div id="map" name="code">@CHARSET "UTF-8";body {margin: 0;padding: 0;height: 100%;}.bigmap {position: absolute;left: 0;top: 0px;padding: 0;width: 100%;height: 100%;border: 1px solid #333;}?参考：
Google (v3) Layer Example http://www.openlayers.org/dev/examples/google-v3.html
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