如何找到Google Map API中显示的Google Map API最短路径

Question

获得最短路线时遇到麻烦。问题在于，谷歌地图中显示的距离与google.maps.DirectionsService（）获得的最短路线之间存在差异。我也收到替代路线，但仍然与地图上的距离显示不匹配..enter image description here

地图中显示的距离为15公里，但google.maps.DirectionsService（）的最短路线为18.3公里我想获取地图上显示的距离，如我所附的图像所示。代码...

       directionsService.route(request, function(response, status) {
           if (status === 'OK') {
               let route_options = [];
               for (var i = 0; i < response.routes.length; i++)
               {
                   let route = response.routes[i];
                   let distance = 0;
                   // Total the legs to find the overall journey distance for each route option
                   for (var j = 0; j < route.legs.length; j++)
                   {
                       distance += route.legs[j].distance.value; // metres
                   }
                   route_options.push({
                       'route_id': i,
                       'distance': distance
                   });
               }
               route_options.sort(function(a, b) {
                   return parseInt(a.distance) - parseInt(b.distance);
               });
               let duration = response.routes[0].legs[0].duration.value;
               let shortest_distance = (route_options[0]['distance'] * 0.001); // convert metres to kilometres


              return shortest_distance;
           }
       });
   }

Answer 1

[代码实现中的其他地方可能还没有发布您的问题，因为共享的代码返回的距离与Google Maps的距离相同。

[请参考Google jsfiddle进行演示，以查看此example。跟着这些步骤：1.选择“德国法兰克福机场（FRA）（FRA）”作为来源2.选择“德国法兰克福汉堡阿利法兰克福万豪酒店”作为目的地3.选择“驾驶”模式

控制台输出：

distance.text: 15.0 km
distance.value: 14.988
shortest_distance: 14.988

以下相关代码：

  function(response, status) {
    if (status === 'OK') {
      let route_options = [];
      for (var i = 0; i < response.routes.length; i++) {
        let route = response.routes[i];
        let distance = 0;
        // Total the legs to find the overall journey distance for each route option
        for (var j = 0; j < route.legs.length; j++) {
          distance += route.legs[j].distance.value; // metres
        }
        route_options.push({
          'route_id': i,
          'distance': distance
        });
      }
      route_options.sort(function(a, b) {
        return parseInt(a.distance) - parseInt(b.distance);
      });
      let duration = response.routes[0].legs[0].duration.value;
      let shortest_distance = (route_options[0]['distance'] * 0.001); // convert metres to kilometres

      console.log("distance.text: " + response.routes[0].legs[0].distance.text);
      console.log("distance.value: " + response.routes[0].legs[0].distance.value * 0.001);
      console.log("shortest_distance: " + shortest_distance);

      me.directionsRenderer.setDirections(response);
    } else {
      window.alert('Directions request failed due to ' + status);
    }
  });

希望这会有所帮助！