百度地图 JSAPI使用 定位当前地址 与路径规划

<style>
		#allmap {width: 100%;height: 80%;overflow: hidden;margin:0;font-family:"微软雅黑";}
		body{
			font-size: 12px;
		}
	</style>

<script type="text/javascript">
	// 百度地图API功能
	var map = new BMap.Map("allmap");    // 创建Map实例
	map.centerAndZoom(new BMap.Point(116.404, 39.915), 11);  // 初始化地图,设置中心点坐标和地图级别
	map.addControl(new BMap.NavigationControl());
	map.addControl(new BMap.ScaleControl());
	map.addControl(new BMap.OverviewMapControl());
	map.addControl(new BMap.MapTypeControl());
	map.setZoom(15);
	map.setCurrentCity("北京");          // 设置地图显示的城市 此项是必须设置的
	map.enableScrollWheelZoom(true);     //开启鼠标滚轮缩放

	var localp;
	var end = "<%=URLDecoder.decode(request.getParameter("haddr"),"utf-8")%>";

	var geolocation = new BMap.Geolocation();
	geolocation.getCurrentPosition(function(r){
		if(this.getStatus() == BMAP_STATUS_SUCCESS){
			var mk = new BMap.Marker(r.point);
			map.addOverlay(mk);
			map.panTo(r.point);
			localp = r.point;
			map.clearOverlays();
			search(localp,end,routePolicy[0]);
		}
		else {
			alert('定位失败！请确认您的浏览器开启了定位功能');
		}
	},{enableHighAccuracy: true})

	var routePolicy = [BMAP_DRIVING_POLICY_LEAST_TIME,BMAP_DRIVING_POLICY_LEAST_DISTANCE,BMAP_DRIVING_POLICY_AVOID_HIGHWAYS];



	function search(start,end,route){
		var driving = new BMap.DrivingRoute(map, {renderOptions:{map: map, autoViewport: true},policy: route});
		driving.search(start,end);
	}

</script>