می توانید از روش ComputeRouteMatrix برای درخواست و پاسخ HTTP یا با هر زبانی که از gRPC پشتیبانی می کند، از جمله Java و Go استفاده کنید.
نمونه های HTTP
مثال زیر یک درخواست و پاسخ ComputeRouteMatrix HTTP را نشان می دهد.
درخواست:
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'
پاسخ:
[{
"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"
}
]
مثال زیر یک درخواست و پاسخ ComputeRouteMatrix HTTP را برای محاسبه قیمت عوارض تخمینی نشان می دهد.
درخواست:
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'
پاسخ:
[{
"status": {},
"distanceMeters": 22498,
"duration": "1251s",
"travelAdvisory": {
"tollInfo": {
"estimatedPrice": [
{
"currencyCode": "USD",
"units": "2",
"nanos": 700000000
}
]
}
}
}
]
مثال های جاوا و برو
مثال‌های زیر نحوه فراخوانی متد ComputeRouteMatrix را با جاوا یا Go نشان می‌دهند. برای دستورالعمل های ساخت به مخازن جاوا و Go Github مربوطه مراجعه کنید.
جاوا
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();
}
}
برو
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)
}
مثال محاسبه هزینه عوارض
مثال زیر از روش computeRouteMatrix برای برگرداندن اطلاعات عوارض در مسیر با قیمت تخمینی در هنگام استفاده از کارت عوارض استفاده می کند.
این ویژگی با ماسک فیلد routes.travelAdvisory.tollInfo مشخص شده در درخواست فعال می شود. کارت عوارض در قسمت route_modifiers مشخص شده است. قیمت عوارض برگشتی بر اساس قیمت استفاده شده توسط پاس مشخص شده است. اگر بیش از یک پاس مشخص شده باشد، کم هزینه ترین قیمت برگشت داده می شود.
درخواست:
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'
پاسخ:
[{
"status": {},
"distanceMeters": 22495,
"duration": "1446s",
"travelAdvisory": {
"tollInfo": {
"estimatedPrice": [
{
"currencyCode": "USD",
"units": "4",
"nanos": 300000000
}
]
}
}
}]