Ejemplos de Amazon SNS usando SDK para Java 2.x - AWS SDK for Java 2.x

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Ejemplos de Amazon SNS usando SDK para Java 2.x

Los siguientes ejemplos de código muestran cómo realizar acciones e implementar escenarios comunes AWS SDK for Java 2.x mediante Amazon SNS.

Las acciones son extractos de código de programas más grandes y deben ejecutarse en contexto. Mientras las acciones muestran cómo llamar a las distintas funciones de servicio, es posible ver las acciones en contexto en los escenarios relacionados.

Los escenarios son ejemplos de código que muestran cómo llevar a cabo una tarea específica a través de llamadas a varias funciones dentro del servicio o combinado con otros Servicios de AWS.

En cada ejemplo se incluye un enlace al código de origen completo, con instrucciones de configuración y ejecución del código en el contexto.

Introducción

En los siguientes ejemplos de código se muestra cómo empezar a utilizar Amazon SNS.

SDK para Java 2.x
nota

Hay más información al respecto. GitHub Busque el ejemplo completo y aprenda a configurar y ejecutar en el Repositorio de ejemplos de código de AWS.

package com.example.sns; import software.amazon.awssdk.regions.Region; import software.amazon.awssdk.services.sns.SnsClient; import software.amazon.awssdk.services.sns.model.SnsException; import software.amazon.awssdk.services.sns.paginators.ListTopicsIterable; public class HelloSNS { public static void main(String[] args) { SnsClient snsClient = SnsClient.builder() .region(Region.US_EAST_1) .build(); listSNSTopics(snsClient); snsClient.close(); } public static void listSNSTopics(SnsClient snsClient) { try { ListTopicsIterable listTopics = snsClient.listTopicsPaginator(); listTopics.stream() .flatMap(r -> r.topics().stream()) .forEach(content -> System.out.println(" Topic ARN: " + content.topicArn())); } catch (SnsException e) { System.err.println(e.awsErrorDetails().errorMessage()); System.exit(1); } } }
  • Para obtener más información sobre la API, consulta ListTopicsla Referencia AWS SDK for Java 2.x de la API.

Acciones

En el siguiente ejemplo de código, se muestra cómo utilizar CheckIfPhoneNumberIsOptedOut.

SDK para Java 2.x
nota

Hay más información al respecto GitHub. Busque el ejemplo completo y aprenda a configurar y ejecutar en el Repositorio de ejemplos de código de AWS.

import software.amazon.awssdk.regions.Region; import software.amazon.awssdk.services.sns.SnsClient; import software.amazon.awssdk.services.sns.model.CheckIfPhoneNumberIsOptedOutRequest; import software.amazon.awssdk.services.sns.model.CheckIfPhoneNumberIsOptedOutResponse; import software.amazon.awssdk.services.sns.model.SnsException; /** * Before running this Java V2 code example, set up your development * environment, including your credentials. * * For more information, see the following documentation topic: * * https://docs.aws.amazon.com/sdk-for-java/latest/developer-guide/get-started.html */ public class CheckOptOut { public static void main(String[] args) { final String usage = """ Usage: <phoneNumber> Where: phoneNumber - The mobile phone number to look up (for example, +1XXX5550100). """; if (args.length != 1) { System.out.println(usage); System.exit(1); } String phoneNumber = args[0]; SnsClient snsClient = SnsClient.builder() .region(Region.US_EAST_1) .build(); checkPhone(snsClient, phoneNumber); snsClient.close(); } public static void checkPhone(SnsClient snsClient, String phoneNumber) { try { CheckIfPhoneNumberIsOptedOutRequest request = CheckIfPhoneNumberIsOptedOutRequest.builder() .phoneNumber(phoneNumber) .build(); CheckIfPhoneNumberIsOptedOutResponse result = snsClient.checkIfPhoneNumberIsOptedOut(request); System.out.println( result.isOptedOut() + "Phone Number " + phoneNumber + " has Opted Out of receiving sns messages." + "\n\nStatus was " + result.sdkHttpResponse().statusCode()); } catch (SnsException e) { System.err.println(e.awsErrorDetails().errorMessage()); System.exit(1); } } }

En el siguiente ejemplo de código, se muestra cómo utilizar ConfirmSubscription.

SDK para Java 2.x
nota

Hay más información al respecto GitHub. Busque el ejemplo completo y aprenda a configurar y ejecutar en el Repositorio de ejemplos de código de AWS.

import software.amazon.awssdk.regions.Region; import software.amazon.awssdk.services.sns.SnsClient; import software.amazon.awssdk.services.sns.model.ConfirmSubscriptionRequest; import software.amazon.awssdk.services.sns.model.ConfirmSubscriptionResponse; import software.amazon.awssdk.services.sns.model.SnsException; /** * Before running this Java V2 code example, set up your development * environment, including your credentials. * * For more information, see the following documentation topic: * * https://docs.aws.amazon.com/sdk-for-java/latest/developer-guide/get-started.html */ public class ConfirmSubscription { public static void main(String[] args) { final String usage = """ Usage: <subscriptionToken> <topicArn> Where: subscriptionToken - A short-lived token sent to an endpoint during the Subscribe action. topicArn - The ARN of the topic.\s """; if (args.length != 2) { System.out.println(usage); System.exit(1); } String subscriptionToken = args[0]; String topicArn = args[1]; SnsClient snsClient = SnsClient.builder() .region(Region.US_EAST_1) .build(); confirmSub(snsClient, subscriptionToken, topicArn); snsClient.close(); } public static void confirmSub(SnsClient snsClient, String subscriptionToken, String topicArn) { try { ConfirmSubscriptionRequest request = ConfirmSubscriptionRequest.builder() .token(subscriptionToken) .topicArn(topicArn) .build(); ConfirmSubscriptionResponse result = snsClient.confirmSubscription(request); System.out.println("\n\nStatus was " + result.sdkHttpResponse().statusCode() + "\n\nSubscription Arn: \n\n" + result.subscriptionArn()); } catch (SnsException e) { System.err.println(e.awsErrorDetails().errorMessage()); System.exit(1); } } }
  • Para obtener más información sobre la API, consulta ConfirmSubscriptionla Referencia AWS SDK for Java 2.x de la API.

En el siguiente ejemplo de código, se muestra cómo utilizar CreateTopic.

SDK para Java 2.x
nota

Hay más información al respecto GitHub. Busque el ejemplo completo y aprenda a configurar y ejecutar en el Repositorio de ejemplos de código de AWS.

import software.amazon.awssdk.regions.Region; import software.amazon.awssdk.services.sns.SnsClient; import software.amazon.awssdk.services.sns.model.CreateTopicRequest; import software.amazon.awssdk.services.sns.model.CreateTopicResponse; import software.amazon.awssdk.services.sns.model.SnsException; /** * Before running this Java V2 code example, set up your development * environment, including your credentials. * * For more information, see the following documentation topic: * * https://docs.aws.amazon.com/sdk-for-java/latest/developer-guide/get-started.html */ public class CreateTopic { public static void main(String[] args) { final String usage = """ Usage: <topicName> Where: topicName - The name of the topic to create (for example, mytopic). """; if (args.length != 1) { System.out.println(usage); System.exit(1); } String topicName = args[0]; System.out.println("Creating a topic with name: " + topicName); SnsClient snsClient = SnsClient.builder() .region(Region.US_EAST_1) .build(); String arnVal = createSNSTopic(snsClient, topicName); System.out.println("The topic ARN is" + arnVal); snsClient.close(); } public static String createSNSTopic(SnsClient snsClient, String topicName) { CreateTopicResponse result; try { CreateTopicRequest request = CreateTopicRequest.builder() .name(topicName) .build(); result = snsClient.createTopic(request); return result.topicArn(); } catch (SnsException e) { System.err.println(e.awsErrorDetails().errorMessage()); System.exit(1); } return ""; } }
  • Para obtener más información sobre la API, consulta CreateTopicla Referencia AWS SDK for Java 2.x de la API.

En el siguiente ejemplo de código, se muestra cómo utilizar DeleteTopic.

SDK para Java 2.x
nota

Hay más información al respecto GitHub. Busque el ejemplo completo y aprenda a configurar y ejecutar en el Repositorio de ejemplos de código de AWS.

import software.amazon.awssdk.regions.Region; import software.amazon.awssdk.services.sns.SnsClient; import software.amazon.awssdk.services.sns.model.DeleteTopicRequest; import software.amazon.awssdk.services.sns.model.DeleteTopicResponse; import software.amazon.awssdk.services.sns.model.SnsException; /** * Before running this Java V2 code example, set up your development * environment, including your credentials. * * For more information, see the following documentation topic: * * https://docs.aws.amazon.com/sdk-for-java/latest/developer-guide/get-started.html */ public class DeleteTopic { public static void main(String[] args) { final String usage = """ Usage: <topicArn> Where: topicArn - The ARN of the topic to delete. """; if (args.length != 1) { System.out.println(usage); System.exit(1); } String topicArn = args[0]; SnsClient snsClient = SnsClient.builder() .region(Region.US_EAST_1) .build(); System.out.println("Deleting a topic with name: " + topicArn); deleteSNSTopic(snsClient, topicArn); snsClient.close(); } public static void deleteSNSTopic(SnsClient snsClient, String topicArn) { try { DeleteTopicRequest request = DeleteTopicRequest.builder() .topicArn(topicArn) .build(); DeleteTopicResponse result = snsClient.deleteTopic(request); System.out.println("\n\nStatus was " + result.sdkHttpResponse().statusCode()); } catch (SnsException e) { System.err.println(e.awsErrorDetails().errorMessage()); System.exit(1); } } }
  • Para obtener más información sobre la API, consulta DeleteTopicla Referencia AWS SDK for Java 2.x de la API.

En el siguiente ejemplo de código, se muestra cómo utilizar GetSMSAttributes.

SDK para Java 2.x
nota

Hay más información al respecto GitHub. Busque el ejemplo completo y aprenda a configurar y ejecutar en el Repositorio de ejemplos de código de AWS.

import software.amazon.awssdk.regions.Region; import software.amazon.awssdk.services.sns.SnsClient; import software.amazon.awssdk.services.sns.model.GetSubscriptionAttributesRequest; import software.amazon.awssdk.services.sns.model.GetSubscriptionAttributesResponse; import software.amazon.awssdk.services.sns.model.SnsException; import java.util.Iterator; import java.util.Map; /** * Before running this Java V2 code example, set up your development * environment, including your credentials. * * For more information, see the following documentation topic: * * https://docs.aws.amazon.com/sdk-for-java/latest/developer-guide/get-started.html */ public class GetSMSAtrributes { public static void main(String[] args) { final String usage = """ Usage: <topicArn> Where: topicArn - The ARN of the topic from which to retrieve attributes. """; if (args.length != 1) { System.out.println(usage); System.exit(1); } String topicArn = args[0]; SnsClient snsClient = SnsClient.builder() .region(Region.US_EAST_1) .build(); getSNSAttrutes(snsClient, topicArn); snsClient.close(); } public static void getSNSAttrutes(SnsClient snsClient, String topicArn) { try { GetSubscriptionAttributesRequest request = GetSubscriptionAttributesRequest.builder() .subscriptionArn(topicArn) .build(); // Get the Subscription attributes GetSubscriptionAttributesResponse res = snsClient.getSubscriptionAttributes(request); Map<String, String> map = res.attributes(); // Iterate through the map Iterator iter = map.entrySet().iterator(); while (iter.hasNext()) { Map.Entry entry = (Map.Entry) iter.next(); System.out.println("[Key] : " + entry.getKey() + " [Value] : " + entry.getValue()); } } catch (SnsException e) { System.err.println(e.awsErrorDetails().errorMessage()); System.exit(1); } System.out.println("\n\nStatus was good"); } }
  • Para obtener más información sobre la API, consulta la referencia Get SMSAttributes in AWS SDK for Java 2.x API.

En el siguiente ejemplo de código, se muestra cómo utilizar GetTopicAttributes.

SDK para Java 2.x
nota

Hay más información al respecto GitHub. Busque el ejemplo completo y aprenda a configurar y ejecutar en el Repositorio de ejemplos de código de AWS.

import software.amazon.awssdk.regions.Region; import software.amazon.awssdk.services.sns.SnsClient; import software.amazon.awssdk.services.sns.model.GetTopicAttributesRequest; import software.amazon.awssdk.services.sns.model.GetTopicAttributesResponse; import software.amazon.awssdk.services.sns.model.SnsException; /** * Before running this Java V2 code example, set up your development * environment, including your credentials. * * For more information, see the following documentation topic: * * https://docs.aws.amazon.com/sdk-for-java/latest/developer-guide/get-started.html */ public class GetTopicAttributes { public static void main(String[] args) { final String usage = """ Usage: <topicArn> Where: topicArn - The ARN of the topic to look up. """; if (args.length != 1) { System.out.println(usage); System.exit(1); } String topicArn = args[0]; SnsClient snsClient = SnsClient.builder() .region(Region.US_EAST_1) .build(); System.out.println("Getting attributes for a topic with name: " + topicArn); getSNSTopicAttributes(snsClient, topicArn); snsClient.close(); } public static void getSNSTopicAttributes(SnsClient snsClient, String topicArn) { try { GetTopicAttributesRequest request = GetTopicAttributesRequest.builder() .topicArn(topicArn) .build(); GetTopicAttributesResponse result = snsClient.getTopicAttributes(request); System.out.println("\n\nStatus is " + result.sdkHttpResponse().statusCode() + "\n\nAttributes: \n\n" + result.attributes()); } catch (SnsException e) { System.err.println(e.awsErrorDetails().errorMessage()); System.exit(1); } } }
  • Para obtener más información sobre la API, consulta GetTopicAttributesla Referencia AWS SDK for Java 2.x de la API.

En el siguiente ejemplo de código, se muestra cómo utilizar ListPhoneNumbersOptedOut.

SDK para Java 2.x
nota

Hay más información al respecto GitHub. Busque el ejemplo completo y aprenda a configurar y ejecutar en el Repositorio de ejemplos de código de AWS.

import software.amazon.awssdk.regions.Region; import software.amazon.awssdk.services.sns.SnsClient; import software.amazon.awssdk.services.sns.model.ListPhoneNumbersOptedOutRequest; import software.amazon.awssdk.services.sns.model.ListPhoneNumbersOptedOutResponse; import software.amazon.awssdk.services.sns.model.SnsException; /** * Before running this Java V2 code example, set up your development * environment, including your credentials. * * For more information, see the following documentation topic: * * https://docs.aws.amazon.com/sdk-for-java/latest/developer-guide/get-started.html */ public class ListOptOut { public static void main(String[] args) { SnsClient snsClient = SnsClient.builder() .region(Region.US_EAST_1) .build(); listOpts(snsClient); snsClient.close(); } public static void listOpts(SnsClient snsClient) { try { ListPhoneNumbersOptedOutRequest request = ListPhoneNumbersOptedOutRequest.builder().build(); ListPhoneNumbersOptedOutResponse result = snsClient.listPhoneNumbersOptedOut(request); System.out.println("Status is " + result.sdkHttpResponse().statusCode() + "\n\nPhone Numbers: \n\n" + result.phoneNumbers()); } catch (SnsException e) { System.err.println(e.awsErrorDetails().errorMessage()); System.exit(1); } } }
  • Para obtener más información sobre la API, consulta ListPhoneNumbersOptedOutla Referencia AWS SDK for Java 2.x de la API.

En el siguiente ejemplo de código, se muestra cómo utilizar ListSubscriptions.

SDK para Java 2.x
nota

Hay más información al respecto GitHub. Busque el ejemplo completo y aprenda a configurar y ejecutar en el Repositorio de ejemplos de código de AWS.

import software.amazon.awssdk.regions.Region; import software.amazon.awssdk.services.sns.SnsClient; import software.amazon.awssdk.services.sns.model.ListSubscriptionsRequest; import software.amazon.awssdk.services.sns.model.ListSubscriptionsResponse; import software.amazon.awssdk.services.sns.model.SnsException; /** * Before running this Java V2 code example, set up your development * environment, including your credentials. * * For more information, see the following documentation topic: * * https://docs.aws.amazon.com/sdk-for-java/latest/developer-guide/get-started.html */ public class ListSubscriptions { public static void main(String[] args) { SnsClient snsClient = SnsClient.builder() .region(Region.US_EAST_1) .build(); listSNSSubscriptions(snsClient); snsClient.close(); } public static void listSNSSubscriptions(SnsClient snsClient) { try { ListSubscriptionsRequest request = ListSubscriptionsRequest.builder() .build(); ListSubscriptionsResponse result = snsClient.listSubscriptions(request); System.out.println(result.subscriptions()); } catch (SnsException e) { System.err.println(e.awsErrorDetails().errorMessage()); System.exit(1); } } }
  • Para obtener más información sobre la API, consulta ListSubscriptionsla Referencia AWS SDK for Java 2.x de la API.

En el siguiente ejemplo de código, se muestra cómo utilizar ListTopics.

SDK para Java 2.x
nota

Hay más información al respecto GitHub. Busque el ejemplo completo y aprenda a configurar y ejecutar en el Repositorio de ejemplos de código de AWS.

import software.amazon.awssdk.regions.Region; import software.amazon.awssdk.services.sns.SnsClient; import software.amazon.awssdk.services.sns.model.ListTopicsRequest; import software.amazon.awssdk.services.sns.model.ListTopicsResponse; import software.amazon.awssdk.services.sns.model.SnsException; /** * Before running this Java V2 code example, set up your development * environment, including your credentials. * * For more information, see the following documentation topic: * * https://docs.aws.amazon.com/sdk-for-java/latest/developer-guide/get-started.html */ public class ListTopics { public static void main(String[] args) { SnsClient snsClient = SnsClient.builder() .region(Region.US_EAST_1) .build(); listSNSTopics(snsClient); snsClient.close(); } public static void listSNSTopics(SnsClient snsClient) { try { ListTopicsRequest request = ListTopicsRequest.builder() .build(); ListTopicsResponse result = snsClient.listTopics(request); System.out.println( "Status was " + result.sdkHttpResponse().statusCode() + "\n\nTopics\n\n" + result.topics()); } catch (SnsException e) { System.err.println(e.awsErrorDetails().errorMessage()); System.exit(1); } } }
  • Para obtener más información sobre la API, consulta ListTopicsla Referencia AWS SDK for Java 2.x de la API.

En el siguiente ejemplo de código, se muestra cómo utilizar Publish.

SDK para Java 2.x
nota

Hay más información al respecto GitHub. Busque el ejemplo completo y aprenda a configurar y ejecutar en el Repositorio de ejemplos de código de AWS.

import software.amazon.awssdk.regions.Region; import software.amazon.awssdk.services.sns.SnsClient; import software.amazon.awssdk.services.sns.model.PublishRequest; import software.amazon.awssdk.services.sns.model.PublishResponse; import software.amazon.awssdk.services.sns.model.SnsException; /** * Before running this Java V2 code example, set up your development * environment, including your credentials. * * For more information, see the following documentation topic: * * https://docs.aws.amazon.com/sdk-for-java/latest/developer-guide/get-started.html */ public class PublishTopic { public static void main(String[] args) { final String usage = """ Usage: <message> <topicArn> Where: message - The message text to send. topicArn - The ARN of the topic to publish. """; if (args.length != 2) { System.out.println(usage); System.exit(1); } String message = args[0]; String topicArn = args[1]; SnsClient snsClient = SnsClient.builder() .region(Region.US_EAST_1) .build(); pubTopic(snsClient, message, topicArn); snsClient.close(); } public static void pubTopic(SnsClient snsClient, String message, String topicArn) { try { PublishRequest request = PublishRequest.builder() .message(message) .topicArn(topicArn) .build(); PublishResponse result = snsClient.publish(request); System.out .println(result.messageId() + " Message sent. Status is " + result.sdkHttpResponse().statusCode()); } catch (SnsException e) { System.err.println(e.awsErrorDetails().errorMessage()); System.exit(1); } } }
  • Para obtener detalles sobre la API, consulte Publish en la Referencia de la API de AWS SDK for Java 2.x .

En el siguiente ejemplo de código, se muestra cómo utilizar SetSMSAttributes.

SDK para Java 2.x
nota

Hay más información GitHub. Busque el ejemplo completo y aprenda a configurar y ejecutar en el Repositorio de ejemplos de código de AWS.

import software.amazon.awssdk.regions.Region; import software.amazon.awssdk.services.sns.SnsClient; import software.amazon.awssdk.services.sns.model.SetSmsAttributesRequest; import software.amazon.awssdk.services.sns.model.SetSmsAttributesResponse; import software.amazon.awssdk.services.sns.model.SnsException; import java.util.HashMap; /** * Before running this Java V2 code example, set up your development * environment, including your credentials. * * For more information, see the following documentation topic: * * https://docs.aws.amazon.com/sdk-for-java/latest/developer-guide/get-started.html */ public class SetSMSAttributes { public static void main(String[] args) { HashMap<String, String> attributes = new HashMap<>(1); attributes.put("DefaultSMSType", "Transactional"); attributes.put("UsageReportS3Bucket", "janbucket"); SnsClient snsClient = SnsClient.builder() .region(Region.US_EAST_1) .build(); setSNSAttributes(snsClient, attributes); snsClient.close(); } public static void setSNSAttributes(SnsClient snsClient, HashMap<String, String> attributes) { try { SetSmsAttributesRequest request = SetSmsAttributesRequest.builder() .attributes(attributes) .build(); SetSmsAttributesResponse result = snsClient.setSMSAttributes(request); System.out.println("Set default Attributes to " + attributes + ". Status was " + result.sdkHttpResponse().statusCode()); } catch (SnsException e) { System.err.println(e.awsErrorDetails().errorMessage()); System.exit(1); } } }
  • Para obtener más información sobre la API, consulta Establecer SMSAttributes en la referencia AWS SDK for Java 2.x de la API.

En el siguiente ejemplo de código, se muestra cómo utilizar SetSubscriptionAttributes.

SDK para Java 2.x
nota

Hay más información al respecto GitHub. Busque el ejemplo completo y aprenda a configurar y ejecutar en el Repositorio de ejemplos de código de AWS.

import software.amazon.awssdk.regions.Region; import software.amazon.awssdk.services.sns.SnsClient; import software.amazon.awssdk.services.sns.model.SnsException; import java.util.ArrayList; /** * Before running this Java V2 code example, set up your development * environment, including your credentials. * * For more information, see the following documentation topic: * * https://docs.aws.amazon.com/sdk-for-java/latest/developer-guide/get-started.html */ public class UseMessageFilterPolicy { public static void main(String[] args) { final String usage = """ Usage: <subscriptionArn> Where: subscriptionArn - The ARN of a subscription. """; if (args.length != 1) { System.out.println(usage); System.exit(1); } String subscriptionArn = args[0]; SnsClient snsClient = SnsClient.builder() .region(Region.US_EAST_1) .build(); usePolicy(snsClient, subscriptionArn); snsClient.close(); } public static void usePolicy(SnsClient snsClient, String subscriptionArn) { try { SNSMessageFilterPolicy fp = new SNSMessageFilterPolicy(); // Add a filter policy attribute with a single value fp.addAttribute("store", "example_corp"); fp.addAttribute("event", "order_placed"); // Add a prefix attribute fp.addAttributePrefix("customer_interests", "bas"); // Add an anything-but attribute fp.addAttributeAnythingBut("customer_interests", "baseball"); // Add a filter policy attribute with a list of values ArrayList<String> attributeValues = new ArrayList<>(); attributeValues.add("rugby"); attributeValues.add("soccer"); attributeValues.add("hockey"); fp.addAttribute("customer_interests", attributeValues); // Add a numeric attribute fp.addAttribute("price_usd", "=", 0); // Add a numeric attribute with a range fp.addAttributeRange("price_usd", ">", 0, "<=", 100); // Apply the filter policy attributes to an Amazon SNS subscription fp.apply(snsClient, subscriptionArn); } catch (SnsException e) { System.err.println(e.awsErrorDetails().errorMessage()); System.exit(1); } } }
  • Para obtener más información sobre la API, consulta SetSubscriptionAttributesla Referencia AWS SDK for Java 2.x de la API.

En el siguiente ejemplo de código, se muestra cómo utilizar SetTopicAttributes.

SDK para Java 2.x
nota

Hay más información al respecto GitHub. Busque el ejemplo completo y aprenda a configurar y ejecutar en el Repositorio de ejemplos de código de AWS.

import software.amazon.awssdk.regions.Region; import software.amazon.awssdk.services.sns.SnsClient; import software.amazon.awssdk.services.sns.model.SetTopicAttributesRequest; import software.amazon.awssdk.services.sns.model.SetTopicAttributesResponse; import software.amazon.awssdk.services.sns.model.SnsException; /** * Before running this Java V2 code example, set up your development * environment, including your credentials. * * For more information, see the following documentation topic: * * https://docs.aws.amazon.com/sdk-for-java/latest/developer-guide/get-started.html */ public class SetTopicAttributes { public static void main(String[] args) { final String usage = """ Usage: <attribute> <topicArn> <value> Where: attribute - The attribute action to use. Valid parameters are: Policy | DisplayName | DeliveryPolicy . topicArn - The ARN of the topic.\s value - The value for the attribute. """; if (args.length < 3) { System.out.println(usage); System.exit(1); } String attribute = args[0]; String topicArn = args[1]; String value = args[2]; SnsClient snsClient = SnsClient.builder() .region(Region.US_EAST_1) .build(); setTopAttr(snsClient, attribute, topicArn, value); snsClient.close(); } public static void setTopAttr(SnsClient snsClient, String attribute, String topicArn, String value) { try { SetTopicAttributesRequest request = SetTopicAttributesRequest.builder() .attributeName(attribute) .attributeValue(value) .topicArn(topicArn) .build(); SetTopicAttributesResponse result = snsClient.setTopicAttributes(request); System.out.println( "\n\nStatus was " + result.sdkHttpResponse().statusCode() + "\n\nTopic " + request.topicArn() + " updated " + request.attributeName() + " to " + request.attributeValue()); } catch (SnsException e) { System.err.println(e.awsErrorDetails().errorMessage()); System.exit(1); } } }
  • Para obtener más información sobre la API, consulta SetTopicAttributesla Referencia AWS SDK for Java 2.x de la API.

En el siguiente ejemplo de código, se muestra cómo utilizar Subscribe.

SDK para Java 2.x
nota

Hay más información al respecto GitHub. Busque el ejemplo completo y aprenda a configurar y ejecutar en el Repositorio de ejemplos de código de AWS.

Suscriba una dirección de correo electrónico a un tema.

import software.amazon.awssdk.regions.Region; import software.amazon.awssdk.services.sns.SnsClient; import software.amazon.awssdk.services.sns.model.SnsException; import software.amazon.awssdk.services.sns.model.SubscribeRequest; import software.amazon.awssdk.services.sns.model.SubscribeResponse; /** * Before running this Java V2 code example, set up your development * environment, including your credentials. * * For more information, see the following documentation topic: * * https://docs.aws.amazon.com/sdk-for-java/latest/developer-guide/get-started.html */ public class SubscribeEmail { public static void main(String[] args) { final String usage = """ Usage: <topicArn> <email> Where: topicArn - The ARN of the topic to subscribe. email - The email address to use. """; if (args.length != 2) { System.out.println(usage); System.exit(1); } String topicArn = args[0]; String email = args[1]; SnsClient snsClient = SnsClient.builder() .region(Region.US_EAST_1) .build(); subEmail(snsClient, topicArn, email); snsClient.close(); } public static void subEmail(SnsClient snsClient, String topicArn, String email) { try { SubscribeRequest request = SubscribeRequest.builder() .protocol("email") .endpoint(email) .returnSubscriptionArn(true) .topicArn(topicArn) .build(); SubscribeResponse result = snsClient.subscribe(request); System.out.println("Subscription ARN: " + result.subscriptionArn() + "\n\n Status is " + result.sdkHttpResponse().statusCode()); } catch (SnsException e) { System.err.println(e.awsErrorDetails().errorMessage()); System.exit(1); } } }

Suscriba un punto de conexión HTTP a un tema.

import software.amazon.awssdk.regions.Region; import software.amazon.awssdk.services.sns.SnsClient; import software.amazon.awssdk.services.sns.model.SnsException; import software.amazon.awssdk.services.sns.model.SubscribeRequest; import software.amazon.awssdk.services.sns.model.SubscribeResponse; /** * Before running this Java V2 code example, set up your development * environment, including your credentials. * * For more information, see the following documentation topic: * * https://docs.aws.amazon.com/sdk-for-java/latest/developer-guide/get-started.html */ public class SubscribeHTTPS { public static void main(String[] args) { final String usage = """ Usage: <topicArn> <url> Where: topicArn - The ARN of the topic to subscribe. url - The HTTPS endpoint that you want to receive notifications. """; if (args.length < 2) { System.out.println(usage); System.exit(1); } String topicArn = args[0]; String url = args[1]; SnsClient snsClient = SnsClient.builder() .region(Region.US_EAST_1) .build(); subHTTPS(snsClient, topicArn, url); snsClient.close(); } public static void subHTTPS(SnsClient snsClient, String topicArn, String url) { try { SubscribeRequest request = SubscribeRequest.builder() .protocol("https") .endpoint(url) .returnSubscriptionArn(true) .topicArn(topicArn) .build(); SubscribeResponse result = snsClient.subscribe(request); System.out.println("Subscription ARN is " + result.subscriptionArn() + "\n\n Status is " + result.sdkHttpResponse().statusCode()); } catch (SnsException e) { System.err.println(e.awsErrorDetails().errorMessage()); System.exit(1); } } }

Suscriba una función de Lambda a un tema.

import software.amazon.awssdk.regions.Region; import software.amazon.awssdk.services.sns.SnsClient; import software.amazon.awssdk.services.sns.model.SnsException; import software.amazon.awssdk.services.sns.model.SubscribeRequest; import software.amazon.awssdk.services.sns.model.SubscribeResponse; /** * Before running this Java V2 code example, set up your development * environment, including your credentials. * * For more information, see the following documentation topic: * * https://docs.aws.amazon.com/sdk-for-java/latest/developer-guide/get-started.html */ public class SubscribeLambda { public static void main(String[] args) { final String usage = """ Usage: <topicArn> <lambdaArn> Where: topicArn - The ARN of the topic to subscribe. lambdaArn - The ARN of an AWS Lambda function. """; if (args.length != 2) { System.out.println(usage); System.exit(1); } String topicArn = args[0]; String lambdaArn = args[1]; SnsClient snsClient = SnsClient.builder() .region(Region.US_EAST_1) .build(); String arnValue = subLambda(snsClient, topicArn, lambdaArn); System.out.println("Subscription ARN: " + arnValue); snsClient.close(); } public static String subLambda(SnsClient snsClient, String topicArn, String lambdaArn) { try { SubscribeRequest request = SubscribeRequest.builder() .protocol("lambda") .endpoint(lambdaArn) .returnSubscriptionArn(true) .topicArn(topicArn) .build(); SubscribeResponse result = snsClient.subscribe(request); return result.subscriptionArn(); } catch (SnsException e) { System.err.println(e.awsErrorDetails().errorMessage()); System.exit(1); } return ""; } }
  • Para obtener información sobre la API, consulte Suscríbase en la Referencia de la API de AWS SDK for Java 2.x .

En el siguiente ejemplo de código, se muestra cómo utilizar TagResource.

SDK para Java 2.x
nota

Hay más información GitHub. Busque el ejemplo completo y aprenda a configurar y ejecutar en el Repositorio de ejemplos de código de AWS.

import software.amazon.awssdk.regions.Region; import software.amazon.awssdk.services.sns.SnsClient; import software.amazon.awssdk.services.sns.model.SnsException; import software.amazon.awssdk.services.sns.model.Tag; import software.amazon.awssdk.services.sns.model.TagResourceRequest; import java.util.ArrayList; import java.util.List; /** * Before running this Java V2 code example, set up your development * environment, including your credentials. * * For more information, see the following documentation topic: * * https://docs.aws.amazon.com/sdk-for-java/latest/developer-guide/get-started.html */ public class AddTags { public static void main(String[] args) { final String usage = """ Usage: <topicArn> Where: topicArn - The ARN of the topic to which tags are added. """; if (args.length != 1) { System.out.println(usage); System.exit(1); } String topicArn = args[0]; SnsClient snsClient = SnsClient.builder() .region(Region.US_EAST_1) .build(); addTopicTags(snsClient, topicArn); snsClient.close(); } public static void addTopicTags(SnsClient snsClient, String topicArn) { try { Tag tag = Tag.builder() .key("Team") .value("Development") .build(); Tag tag2 = Tag.builder() .key("Environment") .value("Gamma") .build(); List<Tag> tagList = new ArrayList<>(); tagList.add(tag); tagList.add(tag2); TagResourceRequest tagResourceRequest = TagResourceRequest.builder() .resourceArn(topicArn) .tags(tagList) .build(); snsClient.tagResource(tagResourceRequest); System.out.println("Tags have been added to " + topicArn); } catch (SnsException e) { System.err.println(e.awsErrorDetails().errorMessage()); System.exit(1); } } }
  • Para obtener más información sobre la API, consulta TagResourcela Referencia AWS SDK for Java 2.x de la API.

En el siguiente ejemplo de código, se muestra cómo utilizar Unsubscribe.

SDK para Java 2.x
nota

Hay más información al respecto GitHub. Busque el ejemplo completo y aprenda a configurar y ejecutar en el Repositorio de ejemplos de código de AWS.

import software.amazon.awssdk.regions.Region; import software.amazon.awssdk.services.sns.SnsClient; import software.amazon.awssdk.services.sns.model.SnsException; import software.amazon.awssdk.services.sns.model.UnsubscribeRequest; import software.amazon.awssdk.services.sns.model.UnsubscribeResponse; /** * Before running this Java V2 code example, set up your development * environment, including your credentials. * * For more information, see the following documentation topic: * * https://docs.aws.amazon.com/sdk-for-java/latest/developer-guide/get-started.html */ public class Unsubscribe { public static void main(String[] args) { final String usage = """ Usage: <subscriptionArn> Where: subscriptionArn - The ARN of the subscription to delete. """; if (args.length < 1) { System.out.println(usage); System.exit(1); } String subscriptionArn = args[0]; SnsClient snsClient = SnsClient.builder() .region(Region.US_EAST_1) .build(); unSub(snsClient, subscriptionArn); snsClient.close(); } public static void unSub(SnsClient snsClient, String subscriptionArn) { try { UnsubscribeRequest request = UnsubscribeRequest.builder() .subscriptionArn(subscriptionArn) .build(); UnsubscribeResponse result = snsClient.unsubscribe(request); System.out.println("\n\nStatus was " + result.sdkHttpResponse().statusCode() + "\n\nSubscription was removed for " + request.subscriptionArn()); } catch (SnsException e) { System.err.println(e.awsErrorDetails().errorMessage()); System.exit(1); } } }
  • Para obtener detalles sobre la API, consulte Unsubscribe en la Referencia de la API de AWS SDK for Java 2.x .

Escenarios

El siguiente ejemplo de código muestra cómo crear una aplicación que envíe datos a una tabla de Amazon DynamoDB y le notifique cuando un usuario actualice la tabla.

SDK para Java 2.x

Indica cómo crear una aplicación web dinámica que envíe datos mediante la API Java de Amazon DynamoDB y un mensaje de texto mediante la API Java de Amazon Simple Notification Service.

Para obtener el código fuente completo y las instrucciones sobre cómo configurarlo y ejecutarlo, consulte el ejemplo completo en. GitHub

Servicios utilizados en este ejemplo
  • DynamoDB

  • Amazon SNS

El siguiente ejemplo de código muestra cómo crear una aplicación que tenga funciones de suscripción y publicación y que traduzca los mensajes.

SDK para Java 2.x

Indica cómo utilizar la API de Java de Amazon Simple Notification Service para crear una aplicación web con la funcionalidad de suscripción y publicación. Además, esta aplicación de ejemplo también traduce los mensajes.

Para obtener el código fuente completo y las instrucciones sobre cómo configurarla y ejecutarla, consulte el ejemplo completo en GitHub.

Para obtener el código fuente completo y las instrucciones sobre cómo configurar y ejecutar el ejemplo que usa la API Java Async, consulta el ejemplo completo en. GitHub

Servicios utilizados en este ejemplo
  • Amazon SNS

  • Amazon Translate

El siguiente ejemplo de código indica cómo crear un punto de enlace de la plataforma para las notificaciones push de Amazon SNS.

SDK para Java 2.x
nota

Hay más información al respecto. GitHub Busque el ejemplo completo y aprenda a configurar y ejecutar en el Repositorio de ejemplos de código de AWS.

import software.amazon.awssdk.regions.Region; import software.amazon.awssdk.services.sns.SnsClient; import software.amazon.awssdk.services.sns.model.CreatePlatformEndpointRequest; import software.amazon.awssdk.services.sns.model.CreatePlatformEndpointResponse; import software.amazon.awssdk.services.sns.model.SnsException; /** * Before running this Java V2 code example, set up your development * environment, including your credentials. * * For more information, see the following documentation topic: * * https://docs.aws.amazon.com/sdk-for-java/latest/developer-guide/get-started.html * * In addition, create a platform application using the AWS Management Console. * See this doc topic: * * https://docs.aws.amazon.com/sns/latest/dg/mobile-push-send-register.html * * Without the values created by following the previous link, this code examples * does not work. */ public class RegistrationExample { public static void main(String[] args) { final String usage = """ Usage: <token> <platformApplicationArn> Where: token - The device token or registration ID of the mobile device. This is a unique identifier provided by the device platform (e.g., Apple Push Notification Service (APNS) for iOS devices, Firebase Cloud Messaging (FCM) for Android devices) when the mobile app is registered to receive push notifications. platformApplicationArn - The ARN value of platform application. You can get this value from the AWS Management Console.\s """; if (args.length != 2) { System.out.println(usage); return; } String token = args[0]; String platformApplicationArn = args[1]; SnsClient snsClient = SnsClient.builder() .region(Region.US_EAST_1) .build(); createEndpoint(snsClient, token, platformApplicationArn); } public static void createEndpoint(SnsClient snsClient, String token, String platformApplicationArn) { System.out.println("Creating platform endpoint with token " + token); try { CreatePlatformEndpointRequest endpointRequest = CreatePlatformEndpointRequest.builder() .token(token) .platformApplicationArn(platformApplicationArn) .build(); CreatePlatformEndpointResponse response = snsClient.createPlatformEndpoint(endpointRequest); System.out.println("The ARN of the endpoint is " + response.endpointArn()); } catch (SnsException e) { System.err.println(e.awsErrorDetails().errorMessage()); } } }

En el siguiente ejemplo de código se muestra cómo crear una aplicación sin servidor que permita a los usuarios administrar fotos mediante etiquetas.

SDK para Java 2.x

Muestra cómo desarrollar una aplicación de administración de activos fotográficos que detecte las etiquetas de las imágenes mediante Amazon Rekognition y las almacene para su posterior recuperación.

Para ver el código fuente completo y las instrucciones sobre cómo configurarlo y ejecutarlo, consulta el ejemplo completo en GitHub.

Para profundizar en el origen de este ejemplo, consulte la publicación en Comunidad de AWS.

Servicios utilizados en este ejemplo
  • API Gateway

  • DynamoDB

  • Lambda

  • Amazon Rekognition

  • Amazon S3

  • Amazon SNS

El siguiente ejemplo de código indica cómo crear y publicar en un tema FIFO de Amazon SNS.

SDK para Java 2.x
nota

Hay más información al respecto GitHub. Busque el ejemplo completo y aprenda a configurar y ejecutar en el Repositorio de ejemplos de código de AWS.

Este ejemplo

  • crea un tema FIFO de Amazon SNS, dos colas FIFO de Amazon SQS y una cola estándar.

  • suscribe las colas al tema y publica un mensaje en el tema.

La prueba verifica la recepción del mensaje en cada cola. El ejemplo completo también muestra la incorporación de políticas de acceso y, al final, elimina los recursos.

public class PriceUpdateExample { public final static SnsClient snsClient = SnsClient.create(); public final static SqsClient sqsClient = SqsClient.create(); public static void main(String[] args) { final String usage = "\n" + "Usage: " + " <topicName> <wholesaleQueueFifoName> <retailQueueFifoName> <analyticsQueueName>\n\n" + "Where:\n" + " fifoTopicName - The name of the FIFO topic that you want to create. \n\n" + " wholesaleQueueARN - The name of a SQS FIFO queue that will be created for the wholesale consumer. \n\n" + " retailQueueARN - The name of a SQS FIFO queue that will created for the retail consumer. \n\n" + " analyticsQueueARN - The name of a SQS standard queue that will be created for the analytics consumer. \n\n"; if (args.length != 4) { System.out.println(usage); System.exit(1); } final String fifoTopicName = args[0]; final String wholeSaleQueueName = args[1]; final String retailQueueName = args[2]; final String analyticsQueueName = args[3]; // For convenience, the QueueData class holds metadata about a queue: ARN, URL, // name and type. List<QueueData> queues = List.of( new QueueData(wholeSaleQueueName, QueueType.FIFO), new QueueData(retailQueueName, QueueType.FIFO), new QueueData(analyticsQueueName, QueueType.Standard)); // Create queues. createQueues(queues); // Create a topic. String topicARN = createFIFOTopic(fifoTopicName); // Subscribe each queue to the topic. subscribeQueues(queues, topicARN); // Allow the newly created topic to send messages to the queues. addAccessPolicyToQueuesFINAL(queues, topicARN); // Publish a sample price update message with payload. publishPriceUpdate(topicARN, "{\"product\": 214, \"price\": 79.99}", "Consumables"); // Clean up resources. deleteSubscriptions(queues); deleteQueues(queues); deleteTopic(topicARN); } public static String createFIFOTopic(String topicName) { try { // Create a FIFO topic by using the SNS service client. Map<String, String> topicAttributes = Map.of( "FifoTopic", "true", "ContentBasedDeduplication", "false"); CreateTopicRequest topicRequest = CreateTopicRequest.builder() .name(topicName) .attributes(topicAttributes) .build(); CreateTopicResponse response = snsClient.createTopic(topicRequest); String topicArn = response.topicArn(); System.out.println("The topic ARN is" + topicArn); return topicArn; } catch (SnsException e) { System.err.println(e.awsErrorDetails().errorMessage()); System.exit(1); } return ""; } public static void subscribeQueues(List<QueueData> queues, String topicARN) { queues.forEach(queue -> { SubscribeRequest subscribeRequest = SubscribeRequest.builder() .topicArn(topicARN) .endpoint(queue.queueARN) .protocol("sqs") .build(); // Subscribe to the endpoint by using the SNS service client. // Only Amazon SQS queues can receive notifications from an Amazon SNS FIFO // topic. SubscribeResponse subscribeResponse = snsClient.subscribe(subscribeRequest); System.out.println("The queue [" + queue.queueARN + "] subscribed to the topic [" + topicARN + "]"); queue.subscriptionARN = subscribeResponse.subscriptionArn(); }); } public static void publishPriceUpdate(String topicArn, String payload, String groupId) { try { // Create and publish a message that updates the wholesale price. String subject = "Price Update"; String dedupId = UUID.randomUUID().toString(); String attributeName = "business"; String attributeValue = "wholesale"; MessageAttributeValue msgAttValue = MessageAttributeValue.builder() .dataType("String") .stringValue(attributeValue) .build(); Map<String, MessageAttributeValue> attributes = new HashMap<>(); attributes.put(attributeName, msgAttValue); PublishRequest pubRequest = PublishRequest.builder() .topicArn(topicArn) .subject(subject) .message(payload) .messageGroupId(groupId) .messageDeduplicationId(dedupId) .messageAttributes(attributes) .build(); final PublishResponse response = snsClient.publish(pubRequest); System.out.println(response.messageId()); System.out.println(response.sequenceNumber()); System.out.println("Message was published to " + topicArn); } catch (SnsException e) { System.err.println(e.awsErrorDetails().errorMessage()); System.exit(1); } }
  • Para obtener información sobre la API, consulte los siguientes temas en la Referencia de la API de AWS SDK for Java 2.x .

En el siguiente ejemplo de código, se muestra cómo:

  • Crear un tema de Amazon SNS

  • Suscribir números de teléfono al tema

  • Publique mensajes SMS en el tema para que todos los números de teléfono suscritos reciban el mensaje a la vez.

SDK para Java 2.x
nota

Hay más información GitHub. Busque el ejemplo completo y aprenda a configurar y ejecutar en el Repositorio de ejemplos de código de AWS.

Cree un tema y devuelva su ARN.

import software.amazon.awssdk.regions.Region; import software.amazon.awssdk.services.sns.SnsClient; import software.amazon.awssdk.services.sns.model.CreateTopicRequest; import software.amazon.awssdk.services.sns.model.CreateTopicResponse; import software.amazon.awssdk.services.sns.model.SnsException; /** * Before running this Java V2 code example, set up your development * environment, including your credentials. * * For more information, see the following documentation topic: * * https://docs.aws.amazon.com/sdk-for-java/latest/developer-guide/get-started.html */ public class CreateTopic { public static void main(String[] args) { final String usage = """ Usage: <topicName> Where: topicName - The name of the topic to create (for example, mytopic). """; if (args.length != 1) { System.out.println(usage); System.exit(1); } String topicName = args[0]; System.out.println("Creating a topic with name: " + topicName); SnsClient snsClient = SnsClient.builder() .region(Region.US_EAST_1) .build(); String arnVal = createSNSTopic(snsClient, topicName); System.out.println("The topic ARN is" + arnVal); snsClient.close(); } public static String createSNSTopic(SnsClient snsClient, String topicName) { CreateTopicResponse result; try { CreateTopicRequest request = CreateTopicRequest.builder() .name(topicName) .build(); result = snsClient.createTopic(request); return result.topicArn(); } catch (SnsException e) { System.err.println(e.awsErrorDetails().errorMessage()); System.exit(1); } return ""; } }

Suscriba un punto de enlace a un tema.

import software.amazon.awssdk.regions.Region; import software.amazon.awssdk.services.sns.SnsClient; import software.amazon.awssdk.services.sns.model.SnsException; import software.amazon.awssdk.services.sns.model.SubscribeRequest; import software.amazon.awssdk.services.sns.model.SubscribeResponse; /** * Before running this Java V2 code example, set up your development * environment, including your credentials. * * For more information, see the following documentation topic: * * https://docs.aws.amazon.com/sdk-for-java/latest/developer-guide/get-started.html */ public class SubscribeTextSMS { public static void main(String[] args) { final String usage = """ Usage: <topicArn> <phoneNumber> Where: topicArn - The ARN of the topic to subscribe. phoneNumber - A mobile phone number that receives notifications (for example, +1XXX5550100). """; if (args.length < 2) { System.out.println(usage); System.exit(1); } String topicArn = args[0]; String phoneNumber = args[1]; SnsClient snsClient = SnsClient.builder() .region(Region.US_EAST_1) .build(); subTextSNS(snsClient, topicArn, phoneNumber); snsClient.close(); } public static void subTextSNS(SnsClient snsClient, String topicArn, String phoneNumber) { try { SubscribeRequest request = SubscribeRequest.builder() .protocol("sms") .endpoint(phoneNumber) .returnSubscriptionArn(true) .topicArn(topicArn) .build(); SubscribeResponse result = snsClient.subscribe(request); System.out.println("Subscription ARN: " + result.subscriptionArn() + "\n\n Status is " + result.sdkHttpResponse().statusCode()); } catch (SnsException e) { System.err.println(e.awsErrorDetails().errorMessage()); System.exit(1); } } }

Establezca atributos en el mensaje, como el ID del remitente, el precio máximo y su tipo. Los atributos de mensaje son opcionales.

import software.amazon.awssdk.regions.Region; import software.amazon.awssdk.services.sns.SnsClient; import software.amazon.awssdk.services.sns.model.SetSmsAttributesRequest; import software.amazon.awssdk.services.sns.model.SetSmsAttributesResponse; import software.amazon.awssdk.services.sns.model.SnsException; import java.util.HashMap; /** * Before running this Java V2 code example, set up your development * environment, including your credentials. * * For more information, see the following documentation topic: * * https://docs.aws.amazon.com/sdk-for-java/latest/developer-guide/get-started.html */ public class SetSMSAttributes { public static void main(String[] args) { HashMap<String, String> attributes = new HashMap<>(1); attributes.put("DefaultSMSType", "Transactional"); attributes.put("UsageReportS3Bucket", "janbucket"); SnsClient snsClient = SnsClient.builder() .region(Region.US_EAST_1) .build(); setSNSAttributes(snsClient, attributes); snsClient.close(); } public static void setSNSAttributes(SnsClient snsClient, HashMap<String, String> attributes) { try { SetSmsAttributesRequest request = SetSmsAttributesRequest.builder() .attributes(attributes) .build(); SetSmsAttributesResponse result = snsClient.setSMSAttributes(request); System.out.println("Set default Attributes to " + attributes + ". Status was " + result.sdkHttpResponse().statusCode()); } catch (SnsException e) { System.err.println(e.awsErrorDetails().errorMessage()); System.exit(1); } } }

Publique un mensaje en un tema. El mensaje se envía a cada suscriptor.

import software.amazon.awssdk.regions.Region; import software.amazon.awssdk.services.sns.SnsClient; import software.amazon.awssdk.services.sns.model.PublishRequest; import software.amazon.awssdk.services.sns.model.PublishResponse; import software.amazon.awssdk.services.sns.model.SnsException; /** * Before running this Java V2 code example, set up your development * environment, including your credentials. * * For more information, see the following documentation topic: * * https://docs.aws.amazon.com/sdk-for-java/latest/developer-guide/get-started.html */ public class PublishTextSMS { public static void main(String[] args) { final String usage = """ Usage: <message> <phoneNumber> Where: message - The message text to send. phoneNumber - The mobile phone number to which a message is sent (for example, +1XXX5550100).\s """; if (args.length != 2) { System.out.println(usage); System.exit(1); } String message = args[0]; String phoneNumber = args[1]; SnsClient snsClient = SnsClient.builder() .region(Region.US_EAST_1) .build(); pubTextSMS(snsClient, message, phoneNumber); snsClient.close(); } public static void pubTextSMS(SnsClient snsClient, String message, String phoneNumber) { try { PublishRequest request = PublishRequest.builder() .message(message) .phoneNumber(phoneNumber) .build(); PublishResponse result = snsClient.publish(request); System.out .println(result.messageId() + " Message sent. Status was " + result.sdkHttpResponse().statusCode()); } catch (SnsException e) { System.err.println(e.awsErrorDetails().errorMessage()); System.exit(1); } } }

En el siguiente ejemplo de código se muestra cómo publicar mensajes SMS mediante Amazon SNS.

SDK para Java 2.x
nota

Hay más información GitHub. Busque el ejemplo completo y aprenda a configurar y ejecutar en el Repositorio de ejemplos de código de AWS.

import software.amazon.awssdk.regions.Region; import software.amazon.awssdk.services.sns.SnsClient; import software.amazon.awssdk.services.sns.model.PublishRequest; import software.amazon.awssdk.services.sns.model.PublishResponse; import software.amazon.awssdk.services.sns.model.SnsException; /** * Before running this Java V2 code example, set up your development * environment, including your credentials. * * For more information, see the following documentation topic: * * https://docs.aws.amazon.com/sdk-for-java/latest/developer-guide/get-started.html */ public class PublishTextSMS { public static void main(String[] args) { final String usage = """ Usage: <message> <phoneNumber> Where: message - The message text to send. phoneNumber - The mobile phone number to which a message is sent (for example, +1XXX5550100).\s """; if (args.length != 2) { System.out.println(usage); System.exit(1); } String message = args[0]; String phoneNumber = args[1]; SnsClient snsClient = SnsClient.builder() .region(Region.US_EAST_1) .build(); pubTextSMS(snsClient, message, phoneNumber); snsClient.close(); } public static void pubTextSMS(SnsClient snsClient, String message, String phoneNumber) { try { PublishRequest request = PublishRequest.builder() .message(message) .phoneNumber(phoneNumber) .build(); PublishResponse result = snsClient.publish(request); System.out .println(result.messageId() + " Message sent. Status was " + result.sdkHttpResponse().statusCode()); } catch (SnsException e) { System.err.println(e.awsErrorDetails().errorMessage()); System.exit(1); } } }
  • Para obtener detalles sobre la API, consulte Publish en la Referencia de la API de AWS SDK for Java 2.x .

En el siguiente ejemplo de código, se muestra cómo:

  • Crear un tema (FIFO o no FIFO)

  • Suscribir varias colas al tema con la opción de aplicar un filtro

  • Publicar mensajes en el tema

  • Sondear las colas en busca de los mensajes recibidos

SDK para Java 2.x
nota

Hay más información GitHub. Busque el ejemplo completo y aprenda a configurar y ejecutar en el Repositorio de ejemplos de código de AWS.

package com.example.sns; import software.amazon.awssdk.auth.credentials.EnvironmentVariableCredentialsProvider; import software.amazon.awssdk.regions.Region; import software.amazon.awssdk.services.sns.SnsClient; import software.amazon.awssdk.services.sns.model.CreateTopicRequest; import software.amazon.awssdk.services.sns.model.CreateTopicResponse; import software.amazon.awssdk.services.sns.model.DeleteTopicRequest; import software.amazon.awssdk.services.sns.model.DeleteTopicResponse; import software.amazon.awssdk.services.sns.model.MessageAttributeValue; import software.amazon.awssdk.services.sns.model.PublishRequest; import software.amazon.awssdk.services.sns.model.PublishResponse; import software.amazon.awssdk.services.sns.model.SetSubscriptionAttributesRequest; import software.amazon.awssdk.services.sns.model.SnsException; import software.amazon.awssdk.services.sns.model.SubscribeRequest; import software.amazon.awssdk.services.sns.model.SubscribeResponse; import software.amazon.awssdk.services.sns.model.UnsubscribeRequest; import software.amazon.awssdk.services.sns.model.UnsubscribeResponse; import software.amazon.awssdk.services.sqs.SqsClient; import software.amazon.awssdk.services.sqs.model.CreateQueueRequest; import software.amazon.awssdk.services.sqs.model.DeleteMessageBatchRequest; import software.amazon.awssdk.services.sqs.model.DeleteMessageBatchRequestEntry; import software.amazon.awssdk.services.sqs.model.DeleteQueueRequest; import software.amazon.awssdk.services.sqs.model.GetQueueAttributesRequest; import software.amazon.awssdk.services.sqs.model.GetQueueAttributesResponse; import software.amazon.awssdk.services.sqs.model.GetQueueUrlRequest; import software.amazon.awssdk.services.sqs.model.GetQueueUrlResponse; import software.amazon.awssdk.services.sqs.model.Message; import software.amazon.awssdk.services.sqs.model.QueueAttributeName; import software.amazon.awssdk.services.sqs.model.ReceiveMessageRequest; import software.amazon.awssdk.services.sqs.model.SetQueueAttributesRequest; import software.amazon.awssdk.services.sqs.model.SqsException; import java.util.ArrayList; import java.util.HashMap; import java.util.List; import java.util.Map; import java.util.Scanner; import com.google.gson.Gson; import com.google.gson.JsonArray; import com.google.gson.JsonObject; import com.google.gson.JsonPrimitive; /** * Before running this Java V2 code example, set up your development * environment, including your credentials. * * For more information, see the following documentation topic: * * https://docs.aws.amazon.com/sdk-for-java/latest/developer-guide/get-started.html * * This Java example performs these tasks: * * 1. Gives the user three options to choose from. * 2. Creates an Amazon Simple Notification Service (Amazon SNS) topic. * 3. Creates an Amazon Simple Queue Service (Amazon SQS) queue. * 4. Gets the SQS queue Amazon Resource Name (ARN) attribute. * 5. Attaches an AWS Identity and Access Management (IAM) policy to the queue. * 6. Subscribes to the SQS queue. * 7. Publishes a message to the topic. * 8. Displays the messages. * 9. Deletes the received message. * 10. Unsubscribes from the topic. * 11. Deletes the SNS topic. */ public class SNSWorkflow { public static final String DASHES = new String(new char[80]).replace("\0", "-"); public static void main(String[] args) { final String usage = "\n" + "Usage:\n" + " <fifoQueueARN>\n\n" + "Where:\n" + " accountId - Your AWS account Id value."; // if (args.length != 1) { // System.out.println(usage); // System.exit(1); // } SnsClient snsClient = SnsClient.builder() .region(Region.US_EAST_1) .credentialsProvider(EnvironmentVariableCredentialsProvider.create()) .build(); SqsClient sqsClient = SqsClient.builder() .region(Region.US_EAST_1) .credentialsProvider(EnvironmentVariableCredentialsProvider.create()) .build(); Scanner in = new Scanner(System.in); String accountId = "814548047983"; String useFIFO; String duplication = "n"; String topicName; String deduplicationID = null; String groupId = null; String topicArn; String sqsQueueName; String sqsQueueUrl; String sqsQueueArn; String subscriptionArn; boolean selectFIFO = false; String message; List<Message> messageList; List<String> filterList = new ArrayList<>(); String msgAttValue = ""; System.out.println(DASHES); System.out.println("Welcome to messaging with topics and queues."); System.out.println("In this scenario, you will create an SNS topic and subscribe an SQS queue to the topic.\n" + "You can select from several options for configuring the topic and the subscriptions for the queue.\n" + "You can then post to the topic and see the results in the queue."); System.out.println(DASHES); System.out.println(DASHES); System.out.println("SNS topics can be configured as FIFO (First-In-First-Out).\n" + "FIFO topics deliver messages in order and support deduplication and message filtering.\n" + "Would you like to work with FIFO topics? (y/n)"); useFIFO = in.nextLine(); if (useFIFO.compareTo("y") == 0) { selectFIFO = true; System.out.println("You have selected FIFO"); System.out.println(" Because you have chosen a FIFO topic, deduplication is supported.\n" + " Deduplication IDs are either set in the message or automatically generated from content using a hash function.\n" + " If a message is successfully published to an SNS FIFO topic, any message published and determined to have the same deduplication ID,\n" + " within the five-minute deduplication interval, is accepted but not delivered.\n" + " For more information about deduplication, see https://docs.aws.amazon.com/sns/latest/dg/fifo-message-dedup.html."); System.out.println( "Would you like to use content-based deduplication instead of entering a deduplication ID? (y/n)"); duplication = in.nextLine(); if (duplication.compareTo("y") == 0) { System.out.println("Please enter a group id value"); groupId = in.nextLine(); } else { System.out.println("Please enter deduplication Id value"); deduplicationID = in.nextLine(); System.out.println("Please enter a group id value"); groupId = in.nextLine(); } } System.out.println(DASHES); System.out.println(DASHES); System.out.println("2. Create a topic."); System.out.println("Enter a name for your SNS topic."); topicName = in.nextLine(); if (selectFIFO) { System.out.println("Because you have selected a FIFO topic, '.fifo' must be appended to the topic name."); topicName = topicName + ".fifo"; System.out.println("The name of the topic is " + topicName); topicArn = createFIFO(snsClient, topicName, duplication); System.out.println("The ARN of the FIFO topic is " + topicArn); } else { System.out.println("The name of the topic is " + topicName); topicArn = createSNSTopic(snsClient, topicName); System.out.println("The ARN of the non-FIFO topic is " + topicArn); } System.out.println(DASHES); System.out.println(DASHES); System.out.println("3. Create an SQS queue."); System.out.println("Enter a name for your SQS queue."); sqsQueueName = in.nextLine(); if (selectFIFO) { sqsQueueName = sqsQueueName + ".fifo"; } sqsQueueUrl = createQueue(sqsClient, sqsQueueName, selectFIFO); System.out.println("The queue URL is " + sqsQueueUrl); System.out.println(DASHES); System.out.println(DASHES); System.out.println("4. Get the SQS queue ARN attribute."); sqsQueueArn = getSQSQueueAttrs(sqsClient, sqsQueueUrl); System.out.println("The ARN of the new queue is " + sqsQueueArn); System.out.println(DASHES); System.out.println(DASHES); System.out.println("5. Attach an IAM policy to the queue."); // Define the policy to use. Make sure that you change the REGION if you are // running this code // in a different region. String policy = "{\n" + " \"Statement\": [\n" + " {\n" + " \"Effect\": \"Allow\",\n" + " \"Principal\": {\n" + " \"Service\": \"sns.amazonaws.com\"\n" + " },\n" + " \"Action\": \"sqs:SendMessage\",\n" + " \"Resource\": \"arn:aws:sqs:us-east-1:" + accountId + ":" + sqsQueueName + "\",\n" + " \"Condition\": {\n" + " \"ArnEquals\": {\n" + " \"aws:SourceArn\": \"arn:aws:sns:us-east-1:" + accountId + ":" + topicName + "\"\n" + " }\n" + " }\n" + " }\n" + " ]\n" + " }"; setQueueAttr(sqsClient, sqsQueueUrl, policy); System.out.println(DASHES); System.out.println(DASHES); System.out.println("6. Subscribe to the SQS queue."); if (selectFIFO) { System.out.println( "If you add a filter to this subscription, then only the filtered messages will be received in the queue.\n" + "For information about message filtering, see https://docs.aws.amazon.com/sns/latest/dg/sns-message-filtering.html\n" + "For this example, you can filter messages by a \"tone\" attribute."); System.out.println("Would you like to filter messages for " + sqsQueueName + "'s subscription to the topic " + topicName + "? (y/n)"); String filterAns = in.nextLine(); if (filterAns.compareTo("y") == 0) { boolean moreAns = false; System.out.println("You can filter messages by one or more of the following \"tone\" attributes."); System.out.println("1. cheerful"); System.out.println("2. funny"); System.out.println("3. serious"); System.out.println("4. sincere"); while (!moreAns) { System.out.println("Select a number or choose 0 to end."); String ans = in.nextLine(); switch (ans) { case "1": filterList.add("cheerful"); break; case "2": filterList.add("funny"); break; case "3": filterList.add("serious"); break; case "4": filterList.add("sincere"); break; default: moreAns = true; break; } } } } subscriptionArn = subQueue(snsClient, topicArn, sqsQueueArn, filterList); System.out.println(DASHES); System.out.println(DASHES); System.out.println("7. Publish a message to the topic."); if (selectFIFO) { System.out.println("Would you like to add an attribute to this message? (y/n)"); String msgAns = in.nextLine(); if (msgAns.compareTo("y") == 0) { System.out.println("You can filter messages by one or more of the following \"tone\" attributes."); System.out.println("1. cheerful"); System.out.println("2. funny"); System.out.println("3. serious"); System.out.println("4. sincere"); System.out.println("Select a number or choose 0 to end."); String ans = in.nextLine(); switch (ans) { case "1": msgAttValue = "cheerful"; break; case "2": msgAttValue = "funny"; break; case "3": msgAttValue = "serious"; break; default: msgAttValue = "sincere"; break; } System.out.println("Selected value is " + msgAttValue); } System.out.println("Enter a message."); message = in.nextLine(); pubMessageFIFO(snsClient, message, topicArn, msgAttValue, duplication, groupId, deduplicationID); } else { System.out.println("Enter a message."); message = in.nextLine(); pubMessage(snsClient, message, topicArn); } System.out.println(DASHES); System.out.println(DASHES); System.out.println("8. Display the message. Press any key to continue."); in.nextLine(); messageList = receiveMessages(sqsClient, sqsQueueUrl, msgAttValue); for (Message mes : messageList) { System.out.println("Message Id: " + mes.messageId()); System.out.println("Full Message: " + mes.body()); } System.out.println(DASHES); System.out.println(DASHES); System.out.println("9. Delete the received message. Press any key to continue."); in.nextLine(); deleteMessages(sqsClient, sqsQueueUrl, messageList); System.out.println(DASHES); System.out.println(DASHES); System.out.println("10. Unsubscribe from the topic and delete the queue. Press any key to continue."); in.nextLine(); unSub(snsClient, subscriptionArn); deleteSQSQueue(sqsClient, sqsQueueName); System.out.println(DASHES); System.out.println(DASHES); System.out.println("11. Delete the topic. Press any key to continue."); in.nextLine(); deleteSNSTopic(snsClient, topicArn); System.out.println(DASHES); System.out.println("The SNS/SQS workflow has completed successfully."); System.out.println(DASHES); } public static void deleteSNSTopic(SnsClient snsClient, String topicArn) { try { DeleteTopicRequest request = DeleteTopicRequest.builder() .topicArn(topicArn) .build(); DeleteTopicResponse result = snsClient.deleteTopic(request); System.out.println("Status was " + result.sdkHttpResponse().statusCode()); } catch (SnsException e) { System.err.println(e.awsErrorDetails().errorMessage()); System.exit(1); } } public static void deleteSQSQueue(SqsClient sqsClient, String queueName) { try { GetQueueUrlRequest getQueueRequest = GetQueueUrlRequest.builder() .queueName(queueName) .build(); String queueUrl = sqsClient.getQueueUrl(getQueueRequest).queueUrl(); DeleteQueueRequest deleteQueueRequest = DeleteQueueRequest.builder() .queueUrl(queueUrl) .build(); sqsClient.deleteQueue(deleteQueueRequest); System.out.println(queueName + " was successfully deleted."); } catch (SqsException e) { System.err.println(e.awsErrorDetails().errorMessage()); System.exit(1); } } public static void unSub(SnsClient snsClient, String subscriptionArn) { try { UnsubscribeRequest request = UnsubscribeRequest.builder() .subscriptionArn(subscriptionArn) .build(); UnsubscribeResponse result = snsClient.unsubscribe(request); System.out.println("Status was " + result.sdkHttpResponse().statusCode() + "\nSubscription was removed for " + request.subscriptionArn()); } catch (SnsException e) { System.err.println(e.awsErrorDetails().errorMessage()); System.exit(1); } } public static void deleteMessages(SqsClient sqsClient, String queueUrl, List<Message> messages) { try { List<DeleteMessageBatchRequestEntry> entries = new ArrayList<>(); for (Message msg : messages) { DeleteMessageBatchRequestEntry entry = DeleteMessageBatchRequestEntry.builder() .id(msg.messageId()) .build(); entries.add(entry); } DeleteMessageBatchRequest deleteMessageBatchRequest = DeleteMessageBatchRequest.builder() .queueUrl(queueUrl) .entries(entries) .build(); sqsClient.deleteMessageBatch(deleteMessageBatchRequest); System.out.println("The batch delete of messages was successful"); } catch (SqsException e) { System.err.println(e.awsErrorDetails().errorMessage()); System.exit(1); } } public static List<Message> receiveMessages(SqsClient sqsClient, String queueUrl, String msgAttValue) { try { if (msgAttValue.isEmpty()) { ReceiveMessageRequest receiveMessageRequest = ReceiveMessageRequest.builder() .queueUrl(queueUrl) .maxNumberOfMessages(5) .build(); return sqsClient.receiveMessage(receiveMessageRequest).messages(); } else { // We know there are filters on the message. ReceiveMessageRequest receiveRequest = ReceiveMessageRequest.builder() .queueUrl(queueUrl) .messageAttributeNames(msgAttValue) // Include other message attributes if needed. .maxNumberOfMessages(5) .build(); return sqsClient.receiveMessage(receiveRequest).messages(); } } catch (SqsException e) { System.err.println(e.awsErrorDetails().errorMessage()); System.exit(1); } return null; } public static void pubMessage(SnsClient snsClient, String message, String topicArn) { try { PublishRequest request = PublishRequest.builder() .message(message) .topicArn(topicArn) .build(); PublishResponse result = snsClient.publish(request); System.out .println(result.messageId() + " Message sent. Status is " + result.sdkHttpResponse().statusCode()); } catch (SnsException e) { System.err.println(e.awsErrorDetails().errorMessage()); System.exit(1); } } public static void pubMessageFIFO(SnsClient snsClient, String message, String topicArn, String msgAttValue, String duplication, String groupId, String deduplicationID) { try { PublishRequest request; // Means the user did not choose to use a message attribute. if (msgAttValue.isEmpty()) { if (duplication.compareTo("y") == 0) { request = PublishRequest.builder() .message(message) .messageGroupId(groupId) .topicArn(topicArn) .build(); } else { request = PublishRequest.builder() .message(message) .messageDeduplicationId(deduplicationID) .messageGroupId(groupId) .topicArn(topicArn) .build(); } } else { Map<String, MessageAttributeValue> messageAttributes = new HashMap<>(); messageAttributes.put(msgAttValue, MessageAttributeValue.builder() .dataType("String") .stringValue("true") .build()); if (duplication.compareTo("y") == 0) { request = PublishRequest.builder() .message(message) .messageGroupId(groupId) .topicArn(topicArn) .build(); } else { // Create a publish request with the message and attributes. request = PublishRequest.builder() .topicArn(topicArn) .message(message) .messageDeduplicationId(deduplicationID) .messageGroupId(groupId) .messageAttributes(messageAttributes) .build(); } } // Publish the message to the topic. PublishResponse result = snsClient.publish(request); System.out .println(result.messageId() + " Message sent. Status was " + result.sdkHttpResponse().statusCode()); } catch (SnsException e) { System.err.println(e.awsErrorDetails().errorMessage()); System.exit(1); } } // Subscribe to the SQS queue. public static String subQueue(SnsClient snsClient, String topicArn, String queueArn, List<String> filterList) { try { SubscribeRequest request; if (filterList.isEmpty()) { // No filter subscription is added. request = SubscribeRequest.builder() .protocol("sqs") .endpoint(queueArn) .returnSubscriptionArn(true) .topicArn(topicArn) .build(); SubscribeResponse result = snsClient.subscribe(request); System.out.println("The queue " + queueArn + " has been subscribed to the topic " + topicArn + "\n" + "with the subscription ARN " + result.subscriptionArn()); return result.subscriptionArn(); } else { request = SubscribeRequest.builder() .protocol("sqs") .endpoint(queueArn) .returnSubscriptionArn(true) .topicArn(topicArn) .build(); SubscribeResponse result = snsClient.subscribe(request); System.out.println("The queue " + queueArn + " has been subscribed to the topic " + topicArn + "\n" + "with the subscription ARN " + result.subscriptionArn()); String attributeName = "FilterPolicy"; Gson gson = new Gson(); String jsonString = "{\"tone\": []}"; JsonObject jsonObject = gson.fromJson(jsonString, JsonObject.class); JsonArray toneArray = jsonObject.getAsJsonArray("tone"); for (String value : filterList) { toneArray.add(new JsonPrimitive(value)); } String updatedJsonString = gson.toJson(jsonObject); System.out.println(updatedJsonString); SetSubscriptionAttributesRequest attRequest = SetSubscriptionAttributesRequest.builder() .subscriptionArn(result.subscriptionArn()) .attributeName(attributeName) .attributeValue(updatedJsonString) .build(); snsClient.setSubscriptionAttributes(attRequest); return result.subscriptionArn(); } } catch (SnsException e) { System.err.println(e.awsErrorDetails().errorMessage()); System.exit(1); } return ""; } // Attach a policy to the queue. public static void setQueueAttr(SqsClient sqsClient, String queueUrl, String policy) { try { Map<software.amazon.awssdk.services.sqs.model.QueueAttributeName, String> attrMap = new HashMap<>(); attrMap.put(QueueAttributeName.POLICY, policy); SetQueueAttributesRequest attributesRequest = SetQueueAttributesRequest.builder() .queueUrl(queueUrl) .attributes(attrMap) .build(); sqsClient.setQueueAttributes(attributesRequest); System.out.println("The policy has been successfully attached."); } catch (SnsException e) { System.err.println(e.awsErrorDetails().errorMessage()); System.exit(1); } } public static String getSQSQueueAttrs(SqsClient sqsClient, String queueUrl) { // Specify the attributes to retrieve. List<QueueAttributeName> atts = new ArrayList<>(); atts.add(QueueAttributeName.QUEUE_ARN); GetQueueAttributesRequest attributesRequest = GetQueueAttributesRequest.builder() .queueUrl(queueUrl) .attributeNames(atts) .build(); GetQueueAttributesResponse response = sqsClient.getQueueAttributes(attributesRequest); Map<String, String> queueAtts = response.attributesAsStrings(); for (Map.Entry<String, String> queueAtt : queueAtts.entrySet()) return queueAtt.getValue(); return ""; } public static String createQueue(SqsClient sqsClient, String queueName, Boolean selectFIFO) { try { System.out.println("\nCreate Queue"); if (selectFIFO) { Map<QueueAttributeName, String> attrs = new HashMap<>(); attrs.put(QueueAttributeName.FIFO_QUEUE, "true"); CreateQueueRequest createQueueRequest = CreateQueueRequest.builder() .queueName(queueName) .attributes(attrs) .build(); sqsClient.createQueue(createQueueRequest); System.out.println("\nGet queue url"); GetQueueUrlResponse getQueueUrlResponse = sqsClient .getQueueUrl(GetQueueUrlRequest.builder().queueName(queueName).build()); return getQueueUrlResponse.queueUrl(); } else { CreateQueueRequest createQueueRequest = CreateQueueRequest.builder() .queueName(queueName) .build(); sqsClient.createQueue(createQueueRequest); System.out.println("\nGet queue url"); GetQueueUrlResponse getQueueUrlResponse = sqsClient .getQueueUrl(GetQueueUrlRequest.builder().queueName(queueName).build()); return getQueueUrlResponse.queueUrl(); } } catch (SqsException e) { System.err.println(e.awsErrorDetails().errorMessage()); System.exit(1); } return ""; } public static String createSNSTopic(SnsClient snsClient, String topicName) { CreateTopicResponse result; try { CreateTopicRequest request = CreateTopicRequest.builder() .name(topicName) .build(); result = snsClient.createTopic(request); return result.topicArn(); } catch (SnsException e) { System.err.println(e.awsErrorDetails().errorMessage()); System.exit(1); } return ""; } public static String createFIFO(SnsClient snsClient, String topicName, String duplication) { try { // Create a FIFO topic by using the SNS service client. Map<String, String> topicAttributes = new HashMap<>(); if (duplication.compareTo("n") == 0) { topicAttributes.put("FifoTopic", "true"); topicAttributes.put("ContentBasedDeduplication", "false"); } else { topicAttributes.put("FifoTopic", "true"); topicAttributes.put("ContentBasedDeduplication", "true"); } CreateTopicRequest topicRequest = CreateTopicRequest.builder() .name(topicName) .attributes(topicAttributes) .build(); CreateTopicResponse response = snsClient.createTopic(topicRequest); return response.topicArn(); } catch (SnsException e) { System.err.println(e.awsErrorDetails().errorMessage()); System.exit(1); } return ""; } }

Ejemplos de tecnología sin servidor

En el siguiente ejemplo de código se muestra cómo implementar una función de Lambda que recibe un evento activado al recibir mensajes de un tema de SNS. La función recupera los mensajes del parámetro de eventos y registra el contenido de cada mensaje.

SDK para Java 2.x
nota

Hay más información GitHub. Busque el ejemplo completo y aprenda a configurar y ejecutar en el repositorio de ejemplos de tecnología sin servidor.

Uso de un evento de SNS con Lambda mediante Java.

// Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved. // SPDX-License-Identifier: Apache-2.0 package example; import com.amazonaws.services.lambda.runtime.Context; import com.amazonaws.services.lambda.runtime.LambdaLogger; import com.amazonaws.services.lambda.runtime.RequestHandler; import com.amazonaws.services.lambda.runtime.events.SNSEvent; import com.amazonaws.services.lambda.runtime.events.SNSEvent.SNSRecord; import java.util.Iterator; import java.util.List; public class SNSEventHandler implements RequestHandler<SNSEvent, Boolean> { LambdaLogger logger; @Override public Boolean handleRequest(SNSEvent event, Context context) { logger = context.getLogger(); List<SNSRecord> records = event.getRecords(); if (!records.isEmpty()) { Iterator<SNSRecord> recordsIter = records.iterator(); while (recordsIter.hasNext()) { processRecord(recordsIter.next()); } } return Boolean.TRUE; } public void processRecord(SNSRecord record) { try { String message = record.getSNS().getMessage(); logger.log("message: " + message); } catch (Exception e) { throw new RuntimeException(e); } } }