实现功能：调用微信获取当前位置接口，转换为百度坐标，进行导航
(1)net.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<%@ taglib prefix="s" uri="/struts-tags"%>
<!DOCTYPE html>
<html>
<head>
<title>LBS导航</title>
<s:param name="appId">${appId}</s:param>
</s:include>
<script type="text/javascript">
/*从url获取值*/
var icon =
'<s:url value='/custom/tydc/other/images/location.png'></s:url>';
var aimIcon =
'<s:url value='/custom/tydc/other/images/location_blue.png'></s:url>';
</script>
<script type="text/javascript"
src="<s:url value="/custom/tydc/other/js/net.js"></s:url>"></script>
<script type="text/javascript"
src="http://api.map.baidu.com/api?v=2.0&ak=l1nCuDjLYBOSV6ZRxEXfMQFN"></script>
</head>
<body>
<div id="location_map"></div>
<div class="map_card">
<div class="network_list">
<div class="text">
<span class="title" id="name"></span>
<span class="address" id="address">
地址:昌平区龙腾苑六区</span>
<span class="phone">
<a id="tel" href="tel:05378676883">
<span class="urlphone" id="linkphone">
电话：0537-8676883
</span></a></span>
</div>
</div>
</div>
</body>
</html>
(2)net.js
//目标点
var aimPoint;
var map;
$(function() {
$(document).ready(function() {
var h = $(window).height(), h2;
$("#location_map").css("height", h*0.8);
$(window).resize(function() {
h2 = $(this).height();
$("#location_map").css("height", h2);
});
});
//调用微信接口，获取地理位置
wxReady();
//点击信息框
$(".address").on("click", "", function() {
map.centerAndZoom(new BMap.Point(aimPoint.lng, aimPoint.lat), 15);
//map.setViewport([ aimPoint ]);
});
});
function wxReady(){
wx.ready(function(){
wx.getLocation({
success: function (res) {
var xx = res.longitude; // 经度，浮点数，范围为180 ~ -180。
var yy = res.latitude; // 纬度，浮点数，范围为90 ~ -90
findLocation(xx,yy);
}
});
});
}
function findLocation(xx,yy){
//将微信坐标转换为百度经纬度
bd_encrypt(yy,xx); //计算后得到百度坐标 longitude latitude
var points=[];
//赋值操作
//$("#name").html("爱乐活");
//$("#address").html("地址:北京大兴区葛家庄");
//$("#linkphone").html("电话：06326878663");
//$("#tel").attr("href","tel:06326878663");
//$("#phone").html("");
//目的经纬度
var destLng = 141.26601;
var destLat = 30.478838;
aimPoint=new BMap.Point(destLng,destLat);
points.push( aimPoint );
// 百度地图API功能
map = new BMap.Map("location_map");// 创建Map实例
map.centerAndZoom(new BMap.Point(longitude,latitude ), 11);
map.enableScrollWheelZoom();
map.enableContinuousZoom();
pt = new BMap.Point(longitude,latitude);
points.push(pt);
map.setViewport(points);
var driving = new BMap.DrivingRoute(map,
{renderOptions:{map: map,autoViewport: false}});
driving.search(pt, aimPoint);
}
var longitude,latitude;
//处理微信坐标
function bd_encrypt(gg_lat, gg_lon)
{
var x_pi = 3.14159265358979324 * 3000.0 / 180.0;
var x = gg_lon; var y = gg_lat;
var z = Math.sqrt(x * x + y * y) + 0.00002 * Math.sin(y * x_pi);
var theta = Math.atan2(y, x) + 0.000003 * Math.cos(x * x_pi);
longitude = z * Math.cos(theta) + 0.0065;
latitude = z * Math.sin(theta) + 0.006;
}