Bibliothèques clientes de l'API Routes

Cette page explique comment débuter avec les bibliothèques clientes pour l'API Routes.

Pour en savoir plus sur les bibliothèques clientes, consultez la page Présentation des bibliothèques clientes.

Installer la bibliothèque cliente

Java

Pour en savoir plus, consultez Configurer un environnement de développement Java.

Pour obtenir des instructions d'installation, consultez Client Java de l'API Google Routes.

Go

go get cloud.google.com/go/maps
 Pour en savoir plus, consultez Configurer un environnement de développement Go.

Pour obtenir des instructions d'installation, consultez Client Go de l'API Google Routes.

Node.js

npm install @googlemaps/routing
 Pour en savoir plus, consultez Configurer un environnement de développement Node.js.

Pour obtenir des instructions d'installation complètes, consultez Client Node.js de l'API Google Routes.

Python

Pour en savoir plus, consultez Configurer un environnement de développement Python.

Pour obtenir des instructions d'installation complètes, consultez Client Python de l'API Google Routes

.NET

Pour en savoir plus, consultez Configurer un environnement de développement .NET.

Pour obtenir des instructions d'installation complètes, consultez Client .NET de l'API Google Routes.

Configurer l'authentification

Lorsque vous utilisez des bibliothèques clientes, vous utilisez les identifiants par défaut de l'application (ADC) pour vous authentifier. Pour en savoir plus sur la configuration de ces identifiants, consultez la section Fournir des identifiants aux ADC. Pour en savoir plus sur l'utilisation des ADC avec les bibliothèques clientes, consultez la section S'authentifier à l'aide de bibliothèques clientes.

Utiliser la bibliothèque cliente

Java

Exemple de calcul d'itinéraires : 

import com.google.maps.routing.v2.*;
import java.io.IOException;
import java.util.HashMap;
import java.util.Map;
   
public class Main {
  public static void main(String[] arguments) throws IOException {
      RoutesSettings routesSettings = RoutesSettings.newBuilder()
              .setHeaderProvider(() -> {
                  Map<String, String> headers = new HashMap<>();
                  headers.put("X-Goog-FieldMask", "*");
                  return headers;
              }).build();
      RoutesClient routesClient = RoutesClient.create(routesSettings);
       
      ComputeRoutesResponse response = routesClient.computeRoutes(ComputeRoutesRequest.newBuilder()
              .setOrigin(Waypoint.newBuilder().setPlaceId("ChIJeRpOeF67j4AR9ydy_PIzPuM").build())
              .setDestination(Waypoint.newBuilder().setPlaceId("ChIJG3kh4hq6j4AR_XuFQnV0_t8").build())
              .setRoutingPreference(RoutingPreference.TRAFFIC_AWARE)
              .setTravelMode(RouteTravelMode.DRIVE).build());
      System.out.println("Response: " + response.toString());
  }
}

Exemple de matrice d'itinéraires : 

import com.google.api.gax.rpc.ServerStream;
import com.google.api.gax.rpc.ServerStreamingCallable;
import com.google.maps.routing.v2.*;
import java.io.IOException;
import java.util.HashMap;
import java.util.Map;
   
public class Main {
  public static void main(String[] arguments) throws IOException {
      RoutesSettings routesSettings = RoutesSettings.newBuilder()
              .setHeaderProvider(() -> {
                  Map<String, String> headers = new HashMap<>();
                  headers.put("X-Goog-FieldMask", "*");
                  return headers;
              }).build();
      RoutesClient routesClient = RoutesClient.create(routesSettings);
       
      ServerStreamingCallable<ComputeRouteMatrixRequest, RouteMatrixElement> computeRouteMatrix = routesClient.computeRouteMatrixCallable();
      ServerStream<RouteMatrixElement> stream = computeRouteMatrix.call(ComputeRouteMatrixRequest.newBuilder()
              .addOrigins(RouteMatrixOrigin.newBuilder()
                      .setWaypoint(Waypoint.newBuilder().
                              setPlaceId("ChIJeRpOeF67j4AR9ydy_PIzPuM").build()))
              .addDestinations(RouteMatrixDestination.newBuilder()
                      .setWaypoint(Waypoint.newBuilder().setPlaceId("ChIJG3kh4hq6j4AR_XuFQnV0_t8").build())
                      .build()).setTravelMode(RouteTravelMode.DRIVE)
              .build());
      for (RouteMatrixElement element : stream) {
          System.out.println("Response : " + element.toString());
      }
  }
}

Go

Exemple de calcul d'itinéraires : 

import (
  "context"
  "fmt"
  "io"
  "os"
     
  routing "cloud.google.com/go/maps/routing/apiv2"
  "cloud.google.com/go/maps/routing/apiv2/routingpb"
  "google.golang.org/grpc/metadata"
)
   
func main() {
  ctx := context.Background()
  client, err := routing.NewRoutesClient(ctx)
  if err != nil {
    fmt.Fprintf(os.Stderr, "error: %v\n", err)
    os.Exit(1)
  }
     
  computeRoutesReq := routingpb.ComputeRoutesRequest{
    Origin: &routingpb.Waypoint{
      LocationType: &routingpb.Waypoint_PlaceId{
        PlaceId: "ChIJeRpOeF67j4AR9ydy_PIzPuM",
      },
    },
    Destination: &routingpb.Waypoint{
      LocationType: &routingpb.Waypoint_PlaceId{
        PlaceId: "ChIJG3kh4hq6j4AR_XuFQnV0_t8",
      },
    },
    RoutingPreference: routingpb.RoutingPreference_TRAFFIC_AWARE,
    TravelMode:        routingpb.RouteTravelMode_DRIVE,
  }
  ctx = metadata.AppendToOutgoingContext(ctx, "X-Goog-FieldMask", "*")
  computeRoutesResponse, err := client.ComputeRoutes(ctx, &computeRoutesReq)
  if err != nil {
    fmt.Fprintf(os.Stderr, "error: %v\n", err)
    os.Exit(1)
  }
  fmt.Fprintf(os.Stdout, "response: %v\n", computeRoutesResponse)
}

Exemple de matrice d'itinéraires : 

import (
  "context"
  "fmt"
  "io"
  "os"
     
  routing "cloud.google.com/go/maps/routing/apiv2"
  "cloud.google.com/go/maps/routing/apiv2/routingpb"
  "google.golang.org/grpc/metadata"
)
   
func main() {
  ctx := context.Background()
  client, err := routing.NewRoutesClient(ctx)
  if err != nil {
    fmt.Printf("error: %v\n", err)
    os.Exit(1)
  }
     
  computeRouteMatrixReq := routingpb.ComputeRouteMatrixRequest{
    Origins: []*routingpb.RouteMatrixOrigin{
      {
        Waypoint: &routingpb.Waypoint{
          LocationType: &routingpb.Waypoint_PlaceId{
            PlaceId: "ChIJeRpOeF67j4AR9ydy_PIzPuM",
          },
        },
      },
    },
    Destinations: []*routingpb.RouteMatrixDestination{
      {
        Waypoint: &routingpb.Waypoint{
          LocationType: &routingpb.Waypoint_PlaceId{
            PlaceId: "ChIJG3kh4hq6j4AR_XuFQnV0_t8",
          },
        },
      },
    },
    TravelMode: routingpb.RouteTravelMode_DRIVE,
  }
  ctx = metadata.AppendToOutgoingContext(ctx, "X-Goog-FieldMask", "*")
  stream, err := client.ComputeRouteMatrix(ctx, &computeRouteMatrixReq)
  if err != nil {
    fmt.Fprintf(os.Stderr, "error: %v\n", err)
    os.Exit(1)
  }
  for {
    element, err := stream.Recv()
    if err == io.EOF {
      break
    }
    if err != nil {
      fmt.Fprintf(os.Stderr, "error: %v\n", err)
      os.Exit(1)
    }
    fmt.Fprintf(os.Stdout, "element: %v\n", element)
  }
}

Node.js

Exemple de calcul d'itinéraires : 

// Imports the Routing library
const { RoutesClient } = require("@googlemaps/routing").v2;
const origin = {
  location: {
    latLng: {
      latitude: 37.419734,
      longitude: -122.0827784,
    },
  },
};
const destination = {
  location: {
    latLng: {
      latitude: 37.41767,
      longitude: -122.079595,
    },
  },
};
// Instantiates a client
const routingClient = new RoutesClient();
async function callComputeRoutes() {
  const request = {
    origin,
    destination,
  };
  // Run request
  const response = await routingClient.computeRoutes(request, {
    otherArgs: {
      headers: {
        "Content-Type": "application/json",
        "X-Goog-Api-Key": "YOUR_API_KEY",
        "X-Goog-FieldMask":
          "routes.duration,routes.distanceMeters,routes.polyline.encodedPolyline",
      },
    },
  });
  console.log(response);
}
callComputeRoutes();

Exemple de calcul de matrice d'itinéraires : 

// Imports the Routing library
const { RoutesClient } = require("@googlemaps/routing").v2;
const origins = [
  {
    waypoint: {
      location: {
        latLng: {
          latitude: 37.420761,
          longitude: -122.081356,
        },
      },
    },
  },
  {
    waypoint: {
      location: {
        latLng: {
          latitude: 37.403184,
          longitude: -122.097371,
        },
      },
    },
  },
];
const destinations = [
  {
    waypoint: {
      location: {
        latLng: {
          latitude: 37.420999,
          longitude: -122.086894,
        },
      },
    },
  },
  {
    waypoint: {
      location: {
        latLng: {
          latitude: 37.383047,
          longitude: -122.044651,
        },
      },
    },
  },
];
// Instantiates a client
const routingClient = new RoutesClient();
async function callComputeRouteMatrix() {
  // Construct request
  const request = {
    origins,
    destinations,
  };
  // Run request
  const stream = await routingClient.computeRouteMatrix(request, {
    otherArgs: {
      headers: {
        "Content-Type": "application/json",
        "X-Goog-Api-Key": "YOUR_API_KEY",
        "X-Goog-FieldMask": "*",
      },
    },
  });
  stream.on("data", (response) => {
    console.log(response);
  });
  stream.on("error", (err) => {
    throw err;
  });
  stream.on("end", () => {
    /* API call completed */
  });
}
callComputeRouteMatrix();

Python

# This snippet has been automatically generated and should be regarded as a
# code template only.
# It will require modifications to work:
# - It may require correct/in-range values for request initialization.
# - It may require specifying regional endpoints when creating the service
#   client as shown in:
#   https://googleapis.dev/python/google-api-core/latest/client_options.html
from google.maps import routing_v2


async def sample_compute_routes():
    # Create a client
    client = routing_v2.RoutesAsyncClient()

    # Initialize request argument(s)
    request = routing_v2.ComputeRoutesRequest()

    # Make the request
    response = await client.compute_routes(request=request)

    # Handle the response
    print(response)

.NET

using Google.Maps.Routing.V2;
using Google.Protobuf.WellKnownTypes;
using System.Threading.Tasks;

public sealed partial class GeneratedRoutesClientSnippets
{
    /// <summary>Snippet for ComputeRoutesAsync</summary>
    /// <remarks>
    /// This snippet has been automatically generated and should be regarded as a code template only.
    /// It will require modifications to work:
    /// - It may require correct/in-range values for request initialization.
    /// - It may require specifying regional endpoints when creating the service client as shown in
    ///   https://cloud.google.com/dotnet/docs/reference/help/client-configuration#endpoint.
    /// </remarks>
    public async Task ComputeRoutesRequestObjectAsync()
    {
        // Create client
        RoutesClient routesClient = await RoutesClient.CreateAsync();
        // Initialize request argument(s)
        ComputeRoutesRequest request = new ComputeRoutesRequest
        {
            Origin = new Waypoint(),
            Destination = new Waypoint(),
            Intermediates = { new Waypoint(), },
            TravelMode = RouteTravelMode.TravelModeUnspecified,
            RoutingPreference = RoutingPreference.Unspecified,
            PolylineQuality = PolylineQuality.Unspecified,
            DepartureTime = new Timestamp(),
            ComputeAlternativeRoutes = false,
            RouteModifiers = new RouteModifiers(),
            LanguageCode = "",
            Units = Units.Unspecified,
            PolylineEncoding = PolylineEncoding.Unspecified,
            OptimizeWaypointOrder = false,
            RequestedReferenceRoutes =
            {
                ComputeRoutesRequest.Types.ReferenceRoute.Unspecified,
            },
            ExtraComputations =
            {
                ComputeRoutesRequest.Types.ExtraComputation.Unspecified,
            },
            RegionCode = "",
            TrafficModel = TrafficModel.Unspecified,
            ArrivalTime = new Timestamp(),
            TransitPreferences = new TransitPreferences(),
        };
        // Make the request
        ComputeRoutesResponse response = await routesClient.ComputeRoutesAsync(request);
    }
}

Ressources supplémentaires

Java

Go

Node.js

Python

.NET