Bạn có thể sử dụng phương thức ComputeRouteMatrix
, một yêu cầu và phản hồi HTTP
hoặc bất kỳ ngôn ngữ nào hỗ trợ gRPC, bao gồm cả Java và Go.
Ví dụ về HTTP
Ví dụ sau đây cho thấy một yêu cầu và phản hồi HTTP ComputeRouteMatrix
.
Yêu cầu:
curl -X POST -d '{
"origins": [
{
"waypoint": { "location": { "latLng": {
"latitude": 37.420761,
"longitude": -122.081356,
}}},
"routeModifiers": { "avoidFerries": true}
},
{
"waypoint": { "location": { "latLng": {
"latitude": 37.403184,
"longitude": -122.097371,
}}},
"routeModifiers": { "avoidFerries": true}
}
],
"destinations": [
{
"waypoint": { "location": { "latLng": {
"latitude": 37.420999,
"longitude": -122.086894,
}}}
},
{
"waypoint": { "location": { "latLng": {
"latitude": 37.383047,
"longitude": -122.044651,
}}}
}
],
"travelMode": "DRIVE",
"routingPreference": "TRAFFIC_AWARE"
}' -H 'Content-Type: application/json' -H 'X-Goog-Api-Key: <YOUR_API_KEY>' -H 'X-Goog-FieldMask: originIndex,destinationIndex,duration,distanceMeters,status' 'https://routespreferred.googleapis.com/v1alpha:computeRouteMatrix'
Phản hồi:
[{
"status": {},
"distanceMeters": 827,
"duration": "139s"
}
,
{
"originIndex": 1,
"destinationIndex": 1,
"status": {},
"distanceMeters": 5597,
"duration": "383s"
}
,
{
"originIndex": 1,
"status": {},
"distanceMeters": 2926,
"duration": "316s"
}
,
{
"destinationIndex": 1,
"status": {},
"distanceMeters": 8602,
"duration": "613s"
}
]
Ví dụ sau đây cho thấy một yêu cầu và phản hồi HTTP ComputeRouteMatrix
để tính giá phí cầu đường ước tính.
Yêu cầu:
curl -X POST -d '{
"origins": [
{
"waypoint": { "location": { "latLng": {
"latitude":47.7020056,
"longitude":-122.3479236,
}}},
"routeModifiers": {
"vehicleInfo":{
"emissionType": "GASOLINE"
},
"tollPasses": [
"US_MA_EZPASSMA",
"US_WA_GOOD_TO_GO"
]
}
}],
"destinations": [
{
"waypoint": { "location": { "latLng": {
"latitude":47.6192234,
"longitude": -122.1676792
}}}
}],
"travelMode": "DRIVE",
"routingPreference": "TRAFFIC_AWARE"
}' -H 'Content-Type: application/json' -H 'X-Goog-Api-Key: <YOUR_API_KEY>' -H 'X-Goog-FieldMask: originIndex,destinationIndex,travelAdvisory,duration,distanceMeters,status' 'https://routespreferred.googleapis.com/v1alpha:computeRouteMatrix'
Phản hồi:
[{
"status": {},
"distanceMeters": 22498,
"duration": "1251s",
"travelAdvisory": {
"tollInfo": {
"estimatedPrice": [
{
"currencyCode": "USD",
"units": "2",
"nanos": 700000000
}
]
}
}
}
]
Ví dụ về Java và Go
Các ví dụ sau đây minh hoạ cách gọi phương thức ComputeRouteMatrix
bằng Java
hoặc Bắt đầu. Xem
Java và
Truy cập GitHub
kho lưu trữ để hướng dẫn tạo bản dựng.
Java
package com.example; import com.google.maps.routes.v1.*; import com.google.type.LatLng; import io.grpc.CallOptions; import io.grpc.Channel; import io.grpc.ClientCall; import io.grpc.ClientInterceptor; import io.grpc.ClientInterceptors; import io.grpc.ForwardingClientCall; import io.grpc.Metadata; import io.grpc.MethodDescriptor; import io.grpc.StatusRuntimeException; import io.grpc.netty.NettyChannelBuilder; import java.util.Iterator; import java.util.concurrent.TimeUnit; import java.util.logging.Level; import java.util.logging.Logger; public class RoutesPreferredClient { // For more detail on inserting API keys, see: // https://cloud.google.com/endpoints/docs/grpc/restricting-api-access-with-api-keys#java // For more detail on system parameters (such as FieldMask), see: // https://cloud.google.com/apis/docs/system-parameters private static final class RoutesPreferredInterceptor implements ClientInterceptor { private final String apiKey; private static final Logger logger = Logger.getLogger(RoutesPreferredInterceptor.class.getName()); private static Metadata.Key<String> API_KEY_HEADER = Metadata.Key.of("x-goog-api-key", Metadata.ASCII_STRING_MARSHALLER); private static Metadata.Key<String> FIELD_MASK_HEADER = Metadata.Key.of("x-goog-fieldmask", Metadata.ASCII_STRING_MARSHALLER); public RoutesPreferredInterceptor(String apiKey) { this.apiKey = apiKey; } @Override public <ReqT, RespT> ClientCall<ReqT, RespT> interceptCall(MethodDescriptor<ReqT, RespT> method, CallOptions callOptions, Channel next) { logger.info("Intercepted " + method.getFullMethodName()); ClientCall<ReqT, RespT> call = next.newCall(method, callOptions); call = new ForwardingClientCall.SimpleForwardingClientCall<ReqT, RespT>(call) { @Override public void start(Listener<RespT> responseListener, Metadata headers) { headers.put(API_KEY_HEADER, apiKey); // Note that setting the field mask to * is OK for testing, but discouraged in // production. // For example, for ComputeRoutes, set the field mask to // "routes.distanceMeters,routes.duration,routes.polyline.encodedPolyline" // in order to get the route distances, durations, and encoded polylines. headers.put(FIELD_MASK_HEADER, "*"); super.start(responseListener, headers); } }; return call; } } private static final Logger logger = Logger.getLogger(RoutesPreferredClient.class.getName()); private final RoutesPreferredGrpc.RoutesPreferredBlockingStub blockingStub; public RoutesPreferredClient(Channel channel) { blockingStub = RoutesPreferredGrpc.newBlockingStub(channel); } public static Waypoint createWaypointForLatLng(double lat, double lng) { return Waypoint.newBuilder() .setLocation(Location.newBuilder().setLatLng(LatLng.newBuilder().setLatitude(lat).setLongitude(lng))) .build(); } public void computeRoutes() { ComputeRoutesRequest request = ComputeRoutesRequest.newBuilder() .setOrigin(createWaypointForLatLng(37.420761, -122.081356)) .setDestination(createWaypointForLatLng(37.420999, -122.086894)).setTravelMode(RouteTravelMode.DRIVE) .setRoutingPreference(RoutingPreference.TRAFFIC_AWARE).setComputeAlternativeRoutes(true) .setUnits(Units.METRIC).setLanguageCode("en-us") .setRouteModifiers( RouteModifiers.newBuilder().setAvoidTolls(false).setAvoidHighways(true).setAvoidFerries(true)) .setPolylineQuality(PolylineQuality.OVERVIEW).build(); ComputeRoutesResponse response; try { logger.info("About to send request: " + request.toString()); response = blockingStub.withDeadlineAfter(2000, TimeUnit.MILLISECONDS).computeRoutes(request); } catch (StatusRuntimeException e) { logger.log(Level.WARNING, "RPC failed: {0}", e.getStatus()); return; } logger.info("Response: " + response.toString()); } public void computeRouteMatrix() { ComputeRouteMatrixRequest request = ComputeRouteMatrixRequest.newBuilder() .addOrigins(RouteMatrixOrigin.newBuilder().setWaypoint(createWaypointForLatLng(37.420761, -122.081356)) .setRouteModifiers(RouteModifiers.newBuilder().setAvoidTolls(false).setAvoidHighways(true) .setAvoidFerries(true))) .addOrigins(RouteMatrixOrigin.newBuilder().setWaypoint(createWaypointForLatLng(37.403184, -122.097371))) .addDestinations(RouteMatrixDestination.newBuilder() .setWaypoint(createWaypointForLatLng(37.420999, -122.086894))) .addDestinations(RouteMatrixDestination.newBuilder() .setWaypoint(createWaypointForLatLng(37.383047, -122.044651))) .setTravelMode(RouteTravelMode.DRIVE).setRoutingPreference(RoutingPreference.TRAFFIC_AWARE).build(); Iterator<RouteMatrixElement> elements; try { logger.info("About to send request: " + request.toString()); elements = blockingStub.withDeadlineAfter(2000, TimeUnit.MILLISECONDS).computeRouteMatrix(request); } catch (StatusRuntimeException e) { logger.log(Level.WARNING, "RPC failed: {0}", e.getStatus()); return; } while (elements.hasNext()) { logger.info("Element response: " + elements.next().toString()); } } public static void main(String[] args) throws Exception { String apiKey = System.getenv("GOOGLE_MAPS_API_KEY"); // The standard TLS port is 443 Channel channel = NettyChannelBuilder.forAddress("routespreferred.googleapis.com", 443).build(); channel = ClientInterceptors.intercept(channel, new RoutesPreferredInterceptor(apiKey)); RoutesPreferredClient client = new RoutesPreferredClient(channel); client.computeRoutes(); client.computeRouteMatrix(); } }
Go
package main import ( "context" "crypto/tls" "io" "log" "os" "time" "github.com/golang/protobuf/proto" v1 "google.golang.org/genproto/googleapis/maps/routes/v1" "google.golang.org/genproto/googleapis/type/latlng" "google.golang.org/grpc" "google.golang.org/grpc/credentials" "google.golang.org/grpc/metadata" ) const ( serverAddr = "routespreferred.googleapis.com:443" // Note that setting the field mask to * is OK for testing, but discouraged in // production. // For example, for ComputeRoutes, set the field mask to // "routes.distanceMeters,routes.duration,routes.polyline.encodedPolyline" // in order to get the route distances, durations, and encoded polylines. fieldMask = "*" ) func createWaypoint(lat float64, lng float64) *v1.Waypoint { return &v1.Waypoint{LocationType: &v1.Waypoint_Location{ Location: &v1.Location{ LatLng: &latlng.LatLng{Latitude: lat, Longitude: lng}, }, }} } func callComputeRoutes(client v1.RoutesPreferredClient, ctx *context.Context) { request := v1.ComputeRoutesRequest{ Origin: createWaypoint(37.420761, -122.081356), Destination: createWaypoint(37.420999, -122.086894), TravelMode: v1.RouteTravelMode_DRIVE, RoutingPreference: v1.RoutingPreference_TRAFFIC_AWARE, ComputeAlternativeRoutes: true, Units: v1.Units_METRIC, LanguageCode: "en-us", RouteModifiers: &v1.RouteModifiers{ AvoidTolls: false, AvoidHighways: true, AvoidFerries: true, }, PolylineQuality: v1.PolylineQuality_OVERVIEW, } marshaler := proto.TextMarshaler{} log.Printf("Sending request: \n%s", marshaler.Text(&request)) result, err := client.ComputeRoutes(*ctx, &request) if err != nil { log.Fatalf("Failed to call ComputeRoutes: %v", err) } log.Printf("Result: %s", marshaler.Text(result)) } func callComputeRouteMatrix(client v1.RoutesPreferredClient, ctx *context.Context) { request := v1.ComputeRouteMatrixRequest{ Origins: []*v1.RouteMatrixOrigin{ {Waypoint: createWaypoint(37.420761, -122.081356), RouteModifiers: &v1.RouteModifiers{ AvoidTolls: false, AvoidHighways: true, AvoidFerries: true, }}, {Waypoint: createWaypoint(37.403184, -122.097371)}, }, Destinations: []*v1.RouteMatrixDestination{ {Waypoint: createWaypoint(37.420999, -122.086894)}, {Waypoint: createWaypoint(37.383047, -122.044651)}, }, TravelMode: v1.RouteTravelMode_DRIVE, RoutingPreference: v1.RoutingPreference_TRAFFIC_AWARE, } marshaler := proto.TextMarshaler{} log.Printf("Sending request: \n%s", marshaler.Text(&request)) stream, err := client.ComputeRouteMatrix(*ctx, &request) if err != nil { log.Fatalf("Failed to call ComputeRouteMatrix: %v", err) } for { element, err := stream.Recv() if err == io.EOF { break } if err != nil { log.Fatalf("Received error in ComputeRouteMatrix stream: %v", err) } log.Printf("Element: %s\n", marshaler.Text(element)) } } func main() { config := tls.Config{} conn, err := grpc.Dial(serverAddr, grpc.WithTransportCredentials(credentials.NewTLS(&config))) if err != nil { log.Fatalf("Failed to connect: %v", err) } defer conn.Close() client := v1.NewRoutesPreferredClient(conn) ctx, cancel := context.WithTimeout(context.Background(), 2*time.Second) ctx = metadata.AppendToOutgoingContext(ctx, "X-Goog-Api-Key", os.Getenv("GOOGLE_MAPS_API_KEY")) ctx = metadata.AppendToOutgoingContext(ctx, "X-Goog-Fieldmask", fieldMask) defer cancel() callComputeRoutes(client, &ctx) callComputeRouteMatrix(client, &ctx) }
Ví dụ về cách tính phí cầu đường
Ví dụ sau đây sử dụng phương thức
computeRouteMatrix
để trả lại thông tin thu phí trên một tuyến đường với giá trị ước tính
giá khi sử dụng phí cầu đường.
Tính năng này được bật bằng mặt nạ trường routes.travelAdvisory.tollInfo
được chỉ định trong yêu cầu. Phí cầu đường được chỉ định trong route_modifiers
. Phí cầu đường được trả về dựa trên giá sử dụng
thẻ/vé được chỉ định. Nếu có nhiều thẻ và vé được chỉ định, gói thấp nhất
giá sẽ được trả về.
Yêu cầu:
curl -X POST -d '{
"origins": [
{
"waypoint": { "location": { "latLng": {
"latitude":47.7020056,
"longitude":-122.3479236,
}}},
"routeModifiers": {
"vehicleInfo":{
"emissionType": "GASOLINE"
},
"tollPasses": [
"US_MA_EZPASSMA",
"US_WA_GOOD_TO_GO"
]
}
}],
"destinations": [
{
"waypoint": { "location": { "latLng": {
"latitude":47.6192234,
"longitude": -122.1676792
}}}
}],
"travelMode": "DRIVE",
"routingPreference": "TRAFFIC_AWARE"
}' \
-H 'Content-Type: application/json' \
-H 'X-Goog-Api-Key: <YOUR_API_KEY>' \
-H 'X-Goog-FieldMask: originIndex,destinationIndex,travelAdvisory,duration,distanceMeters,status' 'https://routespreferred.googleapis.com/v1alpha:computeRouteMatrix'
Phản hồi:
[{
"status": {},
"distanceMeters": 22495,
"duration": "1446s",
"travelAdvisory": {
"tollInfo": {
"estimatedPrice": [
{
"currencyCode": "USD",
"units": "4",
"nanos": 300000000
}
]
}
}
}]