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javascript - Google Maps API 方向服务未显示超过 10 个标记

转载 作者：行者123 更新时间：2023-11-28 04:25:59 25 4
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我正在尝试将 map 上的不同标记链接在一起。目前，这些标记已被硬编码，但平板电脑将及时发送其 GPS 位置，并将其输入网站。无论出于何种原因，如果我输入超过 10 个标记，折线就不再显示。有人可以帮我弄清楚为什么会发生这种情况吗？谢谢。

<html>
    <head>
    </head>

    <body>
        <script type="text/javascript" src="http://maps.googleapis.com/maps/api/js?sensor=false"></script>
        <script type="text/javascript">
            var geocoder;
            var map;
            var directionsDisplay;
            var directionsService = new google.maps.DirectionsService();
            var locations = [
                ['16:58', -20.1672799707871, 57.5069032768888],
                ['17:00', -20.170670813731, 57.5032840805832],
                ['17:01', -20.1712602810727, 57.502503950733],
                ['17:04', -20.166955925865, 57.4892648490453],
                ['17:07', -20.1761991610139, 57.4822988090064],
                ['17:10', -20.1961753165077, 57.4824656045157],
                ['17:13', -20.220309405427, 57.487469732469],
                ['17:16', -20.2342861943874, 57.4996038055266],
                ['17:19', -20.2419951166671, 57.4924547310887],
                ['17:22', -20.2418197976697, 57.4838445649936],
                ['17:25', -20.2417927882899, 57.4821667460937],
                ['17:28', -20.244868944177, 57.4761929726994],
                ['17:31', -20.2494147017248, 57.4751336596163],
                ['17:34', -20.2529453707358, 57.4698643969492],
                ['17:37', -20.2515653985995, 57.4694827601669]
            ];

            function initialize() {
              directionsDisplay = new google.maps.DirectionsRenderer();


              var map = new google.maps.Map(document.getElementById('map'), {
                zoom: 12,
                center: new google.maps.LatLng(-20.23, 57.49),
                mapTypeId: google.maps.MapTypeId.ROADMAP
              });
              directionsDisplay.setMap(map);
              var infowindow = new google.maps.InfoWindow();

              var marker, i;
              var request = {
                travelMode: google.maps.TravelMode.DRIVING
              };
              for (i = 0; i < locations.length; i++) {
                marker = new google.maps.Marker({
                  position: new google.maps.LatLng(locations[i][1], locations[i][2]), map: map
                });

                google.maps.event.addListener(marker, 'click', (function(marker, i) {
                  return function() {
                    infowindow.setContent(locations[i][0]);
                    infowindow.open(map, marker);
                  }
                })(marker, i));

                if (i == 0) request.origin = marker.getPosition();
                else if (i == locations.length - 1) request.destination = marker.getPosition();
                else {
                  if (!request.waypoints) request.waypoints = [];
                  request.waypoints.push({
                    location: marker.getPosition(),
                    stopover: true
                  });
                }

              }
              directionsService.route(request, function(result, status) {
                if (status == google.maps.DirectionsStatus.OK) {
                  directionsDisplay.setDirections(result);
                }
              });
            }
            google.maps.event.addDomListener(window, "load", initialize);
        </script>
        <div id="map" style="width: 100%; height: 100%">
        </div>
    </body>
</html>

最佳答案

您绘制的折线宽度不能超过 8 点加上起点和终点:

Google Maps Directions :

MAX_WAYPOINTS_EXCEEDED indicates that too many waypoints were provided in the request The maximum allowed waypoints is 8, plus the origin, and destination. ( Google Maps API for Work customers may contain requests with up to 23 waypoints.)

这是因为免费 API 仅限于:

Users of the free API get Up to 8 waypoints (plus origin and destination) allowed in each request and a total of 2,500 directions requests per 24 hour period.

尝试将折线拆分为多个请求

关于javascript - Google Maps API 方向服务未显示超过 10 个标记，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/45056570/

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