Java函数在无服务器架构中与其他服务的集成

import com.amazonaws.services.lambda.runtime.Context;
import com.amazonaws.services.lambda.runtime.RequestHandler;
import com.amazonaws.services.sns.AmazonSNS;
import com.amazonaws.services.sns.AmazonSNSClientBuilder;
import com.amazonaws.services.sns.model.PublishRequest;
import com.google.gson.Gson;

import java.util.Map;

public class SendEmailHandler implements RequestHandler<Map<String, String>, String> {

    private static final AmazonSNS SNS_CLIENT = AmazonSNSClientBuilder.defaultClient();

    @Override
    public String handleRequest(Map<String, String> event, Context context) {
        String message = event.get("message");
        String emailAddress = event.get("emailAddress");

        PublishRequest publishRequest = new PublishRequest()
            .withTopicArn("YOUR_SNS_TOPIC_ARN")
            .withMessage(message)
            .withSubject("New message from Java function");

        SNS_CLIENT.publish(publishRequest);

        return "Email sent successfully to " + emailAddress;
    }
}

{
  "message": "Hello from Java function!",
  "emailAddress": "your@email.com"
}