文件 AWS 開發套件範例 GitHub 儲存庫中有更多可用的 [AWS SDK 範例](https://github.com/awsdocs/aws-doc-sdk-examples)。

本文為英文版的機器翻譯版本，如內容有任何歧義或不一致之處，概以英文版為準。

# `CalculateRoute` 搭配 AWS SDK 使用
<a name="location_example_location_CalculateRoute_section"></a>

下列程式碼範例示範如何使用 `CalculateRoute`。

動作範例是大型程式的程式碼摘錄，必須在內容中執行。您可以在下列程式碼範例的內容中看到此動作：
+  [了解基本概念](location_example_location_Scenario_section.md) 

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#### [ Java ]

**SDK for Java 2.x**  
 GitHub 上提供更多範例。尋找完整範例，並了解如何在 [AWS 程式碼範例儲存庫](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/javav2/example_code/location#code-examples)中設定和執行。

```
    /**
     * Calculates the distance between two locations asynchronously.
     *
     * @param routeCalcName the name of the route calculator to use
     * @return a {@link CompletableFuture} that will complete with a {@link CalculateRouteResponse} containing the distance and estimated duration of the route
     */
    public CompletableFuture<CalculateRouteResponse> calcDistanceAsync(String routeCalcName) {
        // Define coordinates for Seattle, WA and Vancouver, BC.
        List<Double> departurePosition = Arrays.asList(-122.3321, 47.6062);
        List<Double> arrivePosition = Arrays.asList(-123.1216, 49.2827);

        CalculateRouteRequest request = CalculateRouteRequest.builder()
            .calculatorName(routeCalcName)
            .departurePosition(departurePosition)
            .destinationPosition(arrivePosition)
            .travelMode("Car") // Options: Car, Truck, Walking, Bicycle
            .distanceUnit("Kilometers") // Options: Meters, Kilometers, Miles
            .build();

        return getClient().calculateRoute(request)
            .whenComplete((response, exception) -> {
                if (exception != null) {
                    Throwable cause = exception.getCause();
                    if (cause instanceof ResourceNotFoundException) {
                        throw new CompletionException("The AWS resource was not found: " + cause.getMessage(), cause);
                    }
                    throw new CompletionException("Failed to calculate route: " + exception.getMessage(), exception);
                }
            });
    }
```
+  如需 API 詳細資訊，請參閱《AWS SDK for Java 2.x API 參考》**中的 [CalculateRoute](https://docs.aws.amazon.com/goto/SdkForJavaV2/location-2020-11-19/CalculateRoute)。

------
#### [ JavaScript ]

**適用於 JavaScript (v3) 的 SDK**  
 GitHub 上提供更多範例。尋找完整範例，並了解如何在 [AWS 程式碼範例儲存庫](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/javascriptv3/example_code/location/actions#code-examples)中設定和執行。

```
import { fileURLToPath } from "node:url";
import {
  CalculateRouteCommand,
  ResourceNotFoundException,
  LocationClient,
} from "@aws-sdk/client-location";
import data from "./inputs.json" with { type: "json" };

const region = "eu-west-1";
const locationClient = new LocationClient({ region: region });

export const main = async () => {
  const routeCalcParams = {
    CalculatorName: `${data.inputs.calculatorName}`,
    DeparturePosition: [-122.3321, 47.6062],
    DestinationPosition: [-123.1216, 49.2827],
    TravelMode: "Car",
    DistanceUnit: "Kilometers",
  };
  try {
    const command = new CalculateRouteCommand(routeCalcParams);
    const response = await locationClient.send(command);

    console.log(
      "Successfully calculated route. The distance in kilometers is : ",
      response.Summary.Distance,
    );
  } catch (caught) {
    if (caught instanceof ResourceNotFoundException) {
      console.error(
        `An conflict occurred: ${caught.message} \n Exiting program.`,
      );
      return;
    }
  }
};
```
+  如需 API 詳細資訊，請參閱《適用於 JavaScript 的 AWS SDK API 參考》**中的 [CalculateRoute](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/location/command/CalculateRouteCommand)。

------
#### [ Kotlin ]

**適用於 Kotlin 的 SDK**  
 GitHub 上提供更多範例。尋找完整範例，並了解如何在 [AWS 程式碼範例儲存庫](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/kotlin/services/location#code-examples)中設定和執行。

```
/**
 * Calculates the distance between two locations.
 *
 * @param routeCalcName the name of the route calculator to use
 * @return a {@link CompletableFuture} that will complete with a {@link CalculateRouteResponse} containing the distance and estimated duration of the route
 */
suspend fun calcDistance(routeCalcName: String): CalculateRouteResponse {
    // Define coordinates for Seattle, WA and Vancouver, BC.
    val departurePosition = listOf(-122.3321, 47.6062)
    val arrivePosition = listOf(-123.1216, 49.2827)

    val request = CalculateRouteRequest {
        this.calculatorName = routeCalcName
        this.departurePosition = departurePosition
        this.destinationPosition = arrivePosition
        this.travelMode = TravelMode.Car // Options: Car, Truck, Walking, Bicycle
        this.distanceUnit = DistanceUnit.Kilometers // Options: Meters, Kilometers, Miles
    }

    LocationClient.fromEnvironment { region = "us-east-1" }.use { client ->
        return client.calculateRoute(request)
    }
}
```
+  如需 API 詳細資訊，請參閱《適用於 Kotlin 的AWS SDK API 參考》**中的 [CalculateRoute](https://sdk.amazonaws.com/kotlin/api/latest/index.html)。

------