Utilisation d'une application Java pour interagir avec un bot Amazon Lex V2

La AWS SDK for Javaversion 2.0 fournit une interface que vous pouvez utiliser à partir de vos applications Java pour interagir avec vos robots. Utilisez le SDK for Java client pour créer des applications client pour les utilisateurs.

L'application suivante interagit avec le OrderFlowers bot que vous avez créé dansExercice 1 : créer un bot à partir d'un exemple. Il utilise leLexRuntimeV2Client fichier depuis le SDK for Java pour appeler l'RecognizeTextopération afin de mener une conversation avec le bot.

La sortie de la conversation ressemble à suit suit suit suit suit suit suit suit suit suit suit suit

User : I would like to order flowers
Bot  : What type of flowers would you like to order?
User : 1 dozen roses
Bot  : What day do you want the dozen roses to be picked up?
User : Next Monday
Bot  : At what time do you want the dozen roses to be picked up?
User : 5 in the evening
Bot  : Okay, your dozen roses will be ready for pickup by 17:00 on 2021-01-04.  Does this sound okay?
User : Yes
Bot  : Thanks.

Pour les structures JSON qui sont envoyées entre l'application cliente et le bot Amazon Lex V2, consultezExercice 2 : Passez en revue le flux de conversation.

Pour exécuter l'application, vous devez renseigner les informations suivantes.

Les applications utilisent une fonction appeléegetRecognizeTextRequest à créer des demandes individuelles au bot. La fonction crée une requête avec les paramètres requis à envoyer à Amazon Lex V2.

package com.lex.recognizetext.sample;

import software.amazon.awssdk.auth.credentials.AwsBasicCredentials;
import software.amazon.awssdk.auth.credentials.AwsCredentialsProvider;
import software.amazon.awssdk.auth.credentials.StaticCredentialsProvider;
import software.amazon.awssdk.regions.Region;
import software.amazon.awssdk.services.lexruntimev2.LexRuntimeV2Client;
import software.amazon.awssdk.services.lexruntimev2.model.RecognizeTextRequest;
import software.amazon.awssdk.services.lexruntimev2.model.RecognizeTextResponse;

import java.net.URISyntaxException;
import java.util.UUID;


/**
 * This is a sample application to interact with a bot using RecognizeText API.
 */
public class OrderFlowersSampleApplication {

    public static void main(String[] args) throws URISyntaxException, InterruptedException {
        String botId = "";
        String botAliasId = "";
        String localeId = "en_US";
        String accessKey = "";
        String secretKey = "";
        String sessionId = UUID.randomUUID().toString();
        Region region = Region.US_EAST_1; // pick an appropriate region

        AwsBasicCredentials awsCreds = AwsBasicCredentials.create(accessKey, secretKey);
        AwsCredentialsProvider awsCredentialsProvider = StaticCredentialsProvider.create(awsCreds);

        LexRuntimeV2Client lexV2Client = LexRuntimeV2Client
                .builder()
                .credentialsProvider(awsCredentialsProvider)
                .region(region)
                .build();

        // utterance 1
        String userInput = "I would like to order flowers";
        RecognizeTextRequest recognizeTextRequest = getRecognizeTextRequest(botId, botAliasId, localeId, sessionId, userInput);
        RecognizeTextResponse recognizeTextResponse = lexV2Client.recognizeText(recognizeTextRequest);

        System.out.println("User : " + userInput);
        recognizeTextResponse.messages().forEach(message -> {
            System.out.println("Bot : " + message.content());
        });

        // utterance 2
        userInput = "1 dozen roses";
        recognizeTextRequest = getRecognizeTextRequest(botId, botAliasId, localeId, sessionId, userInput);
        recognizeTextResponse = lexV2Client.recognizeText(recognizeTextRequest);

        System.out.println("User : " + userInput);
        recognizeTextResponse.messages().forEach(message -> {
            System.out.println("Bot : " + message.content());
        });

        // utterance 3
        userInput = "next monday";
        recognizeTextRequest = getRecognizeTextRequest(botId, botAliasId, localeId, sessionId, userInput);
        recognizeTextResponse = lexV2Client.recognizeText(recognizeTextRequest);

        System.out.println("User : " + userInput);
        recognizeTextResponse.messages().forEach(message -> {
            System.out.println("Bot : " + message.content());
        });

        // utterance 4
        userInput = "5 in evening";
        recognizeTextRequest = getRecognizeTextRequest(botId, botAliasId, localeId, sessionId, userInput);
        recognizeTextResponse = lexV2Client.recognizeText(recognizeTextRequest);

        System.out.println("User : " + userInput);
        recognizeTextResponse.messages().forEach(message -> {
            System.out.println("Bot : " + message.content());
        });

        // utterance 5
        userInput = "Yes";
        recognizeTextRequest = getRecognizeTextRequest(botId, botAliasId, localeId, sessionId, userInput);
        recognizeTextResponse = lexV2Client.recognizeText(recognizeTextRequest);

        System.out.println("User : " + userInput);
        recognizeTextResponse.messages().forEach(message -> {
            System.out.println("Bot : " + message.content());
        });
    }

    private static RecognizeTextRequest getRecognizeTextRequest(String botId, String botAliasId, String localeId, String sessionId, String userInput) {
        RecognizeTextRequest recognizeTextRequest = RecognizeTextRequest.builder()
                .botAliasId(botAliasId)
                .botId(botId)
                .localeId(localeId)
                .sessionId(sessionId)
                .text(userInput)
                .build();
        return recognizeTextRequest;
    }
}