Javascript 如何从不同路线获得从源地到目的地的所有纬度和经度
目前,我能够从源位置到目标位置获取所有lat和lon 但是有了这个,我只能得到一条路径 现在,我想要一个选项,从不同的路由路径中选择一条路由路径,从源位置到目标位置 我还想把所有的lat和lon存储到我的数据库中Javascript 如何从不同路线获得从源地到目的地的所有纬度和经度,javascript,c#,asp.net,google-maps,Javascript,C#,Asp.net,Google Maps,目前,我能够从源位置到目标位置获取所有lat和lon 但是有了这个,我只能得到一条路径 现在,我想要一个选项,从不同的路由路径中选择一条路由路径,从源位置到目标位置 我还想把所有的lat和lon存储到我的数据库中 Database structure : Rid Lat Lon 我正在使用asp.net c技术 How can i get the option for select path and according to that path need to get all the lat
Database structure :
Rid Lat Lon
我正在使用asp.net c技术
How can i get the option for select path and according to that path need to get all the lat and lon.
而且所有的lat和lon都需要用c代码存储在我的数据库中
如何执行此任务
我使用的是belowe代码:
<!DOCTYPE html>
<html>
<head>
<meta name="viewport" content="initial-scale=1.0, user-scalable=no">
<meta charset="utf-8">
<title>Geocoding service</title>
<style>
html, body, #map-canvas {
height: 100%;
min-height: 600px;
min-width: 700px;
margin: 0px;
padding: 0px;
}
#map-canvas {
height: 50%;
}
#panel {
position: absolute;
top: 5px;
left: 50%;
margin-left: -180px;
z-index: 5;
background-color: #fff;
padding: 5px;
border: 1px solid #999;
}
</style>
<script src="https://maps.googleapis.com/maps/api/js?v=3.exp&sensor=false"></script>
</head>
<body>
<div id="panel">
<label>
Origin
<input id="origin" type="text" value="">
</label>
<label>
Destination
<input id="destination" type="text" value="">
</label>
<input type="button" value="GetDirections" onclick="calcRoute()">
</div>
<div id="map-canvas"></div>
<div id="vertex-container">
<label>Points</label>
<ul id="vertex">
</ul>
</div>
<script type="text/javascript">
var directionsDisplay;
var directionsService = new google.maps.DirectionsService();
var map;
function initialize() {
directionsDisplay = new google.maps.DirectionsRenderer();
var mapOptions = {
zoom: 7,
center: new google.maps.LatLng(25.5911, 86.1611)
};
map = new google.maps.Map(document.getElementById('map-canvas'), mapOptions);
directionsDisplay.setMap(map);
}
function calcRoute() {
var start = document.getElementById('origin').value;
var end = document.getElementById('destination').value;
var request = {
origin: start,
destination: end,
travelMode: google.maps.TravelMode.DRIVING
};
directionsService.route(request, function (response, status) {
if (status == google.maps.DirectionsStatus.OK) {
directionsDisplay.setDirections(response);
if (response.routes && response.routes.length > 0) {
var routes = response.routes;
for (var j = 0; j < routes.length; j++) {
var points = routes[j].overview_path;
var ul = document.getElementById("vertex");
for (var i = 0; i < points.length; i++) {
var li = document.createElement('li');
li.innerHTML = getLiText(points[i]);
ul.appendChild(li);
}
}
}
}
});
}
function getLiText(point) {
var lat = point.lat(),
lng = point.lng();
return "lat: " + lat + " lng: " + lng;
}
google.maps.event.addDomListener(window, 'load', initialize);
</script>
</body>
</html>
要让Google Maps向您发送几个选项,您必须构建Google.Maps.DirectionRequest对象,将ProviderRouteAlternations属性设置为true,如下所示:
var request = {
origin: start,
destination: end,
travelMode: google.maps.TravelMode.DRIVING,
provideRouteAlternatives : true
};
<!DOCTYPE html>
<html>
<head>
<meta name="viewport" content="initial-scale=1.0, user-scalable=no">
<meta charset="utf-8">
<title>Geocoding service</title>
<style>
html, body, #map-canvas { height: 100%; min-height: 600px; min-width: 700px; margin: 0px; padding: 0px }
#map-canvas { height: 50%; }
#panel { position: absolute; top: 5px; left: 50%; margin-left: -180px; z-index: 5; background-color: #fff; padding: 5px; border: 1px solid #999; }
</style>
<script src="https://maps.googleapis.com/maps/api/js?v=3.exp&sensor=false"></script>
</head>
<body>
<div id="panel">
<label>Origin
<input id="origin" type="text" value="">
</label>
<label>Destination
<input id="destination" type="text" value="">
</label>
<input type="button" value="GetDirections" onclick="calcRoute()">
</div>
<div id="map-canvas"></div>
<div id="vertex-container">
<label>Points</label>
<ul id="vertex">
</ul>
</div>
<script type="text/javascript">
var directionsDisplays = [];
var directionsService = new google.maps.DirectionsService();
var map;
function initialize() {
var mapOptions = {
zoom: 7,
center: new google.maps.LatLng(48.85727000, 2.35238)
};
map = new google.maps.Map(document.getElementById('map-canvas'), mapOptions);
}
function calcRoute() {
var start = document.getElementById('origin').value;
var end = document.getElementById('destination').value;
var request = {
origin: start,
destination: end,
provideRouteAlternatives: true,
travelMode: google.maps.TravelMode.DRIVING
};
directionsService.route(request, function (response, status) {
if (status == google.maps.DirectionsStatus.OK) {
if (response.routes && response.routes.length > 0) {
var routes = response.routes;
for (var j = 0; j < routes.length; j++) {
var directionsDisplay = new google.maps.DirectionsRenderer({ map: map, directions: response, routeIndex: j });
directionsDisplays.push(directionsDisplay);
var points = routes[j].overview_path;
var ul = document.getElementById("vertex");
for (var i = 0; i < points.length; i++) {
var li = document.createElement('li');
li.innerHTML = getLiText(points[i]);
ul.appendChild(li);
}
}
}
}
});
}
function getLiText(point) {
var lat = point.lat(),
lng = point.lng();
return "lat: " + lat + " lng: " + lng;
}
google.maps.event.addDomListener(window, 'load', initialize);
</script>
</body>
</html>
然后google.maps.DirectionsResultobject返回一个数组路由。对于多个DirectionRoute对象,当ProviderRouteAlternative设置为false时,它通常只包含一个对象
因此,根据您使用的代码:
var-routes=response.routes
路由将有几个元素需要迭代。这里有好几条路
现在,当您执行此操作时,directionsDisplay.setDirectionsresponse google maps将仅在数组路由的索引0中绘制路由。要让Google Maps绘制另一条路径,必须指定传递给Google.Maps.DirectionsRenderOptions构造函数的Google.Maps.DirectionsRenderOptions对象的routeIndex属性
类似的内容将绘制所有需要几个方向的路径渲染器对象:
var routes = response.routes;
for (var j = 0; j < routes.length; j++) {
var directionsDisplay = new google.maps.DirectionsRenderer({ map: map, directions: response, routeIndex: j });
directionsDisplays.push(directionsDisplay);
var points = routes[j].overview_path;
var ul = document.getElementById("vertex");
for (var i = 0; i < points.length; i++) {
var li = document.createElement('li');
li.innerHTML = getLiText(points[i]);
ul.appendChild(li);
}
}
你读了吗?但是我怎样才能把lat和lon添加到数据库中呢?我回答了第一个问题,对于第二个问题,你考虑过使用jQuery吗?谢谢。我已经尝试过ajax,并开发了该文件的webmethod类,但它会给我空值。下面的答案给出了给你想要发送到服务器的对象的逻辑,我建议你是一个普通对象,而不是Google Maps对象。类似这样的东西:`[{lat:1.223,lng:2.122312},{lat:1.545435,lng:2.54354343}]。当你得到答案后,再发一个你知道的问题,一个问题,一个帖子;在这里,我得到了所有的路径,但是我如何才能选择任何一条路径,而只选择路径lat和lon呢?就像这个var directionsDisplay=new google.maps.DirectionsRenderer{map:map,directions:response,routeIndex:j};您可以通过传递reoutIndex来选择所需的路径。因此,如果路线有2条路径,您通过1,您将选择并绘制第二条路径路线,但我无法在地图上选择任何路径,并且您需要掌握所有这些,以便选择一条多段线,该多段线基本上是侦听单击事件并更改颜色,或者您希望在多段线的单击事件处理程序上单击…确定,谢谢。。您能告诉我如何将这些存储在数据库中吗?