百度地图API 行政区域边界

Html

<div id="container"></div>
<br />
输入省、直辖市或县名称：<input type="text" id="districtName" style="width:80px" value="重庆市">
<input type="button" onclick="getBoundary()" value="获取轮廓线">

Js

var map = new BMap.Map("container");

map.centerAndZoom(new BMap.Point(116.403765, 39.914850), 5);

map.addControl(new BMap.NavigationControl({type: BMAP_NAVIGATION_CONTROL_SMALL}));

map.enableScrollWheelZoom();

function getBoundary(){       

    var bdary = new BMap.Boundary();

    var name = document.getElementById("districtName").value;

    bdary.get(name, function(rs){       //获取行政区域

        map.clearOverlays();        //清除地图覆盖物       

        var count = rs.boundaries.length; //行政区域的点有多少个

        for(var i = 0; i < count; i++){

            var ply = new BMap.Polygon(rs.boundaries[i], {strokeWeight: 2, strokeColor: "#ff0000"}); //建立多边形覆盖物

            map.addOverlay(ply);  //添加覆盖物

            map.setViewport(ply.getPath());    //调整视野         

        }                

    });   

}