java - 我无法将SNS消息发布为电子邮件

我正在使用以下代码：

 AmazonSNSClient snsClient = new AmazonSNSClient(credentials);
 snsClient.setRegion(Region.getRegion(Regions.SA_EAST_1));
                    String msg = "My text published to SNS topic with email endpoint";
                    String arn = "XXXXX";
                    PublishRequest publishRequest = new PublishRequest("topicARN here",msg);
                    PublishResult publishResult = snsClient.publish(publishRequest);

但是我正在跟随错误。


  “ InvalidParameterException：状态代码：400，AWS服务：AmazonSNS，
  AWS请求ID：446fef49-4eba-5484-ba4c-bf82682cdc46，AWS错误代码：
  InvalidParameter，AWS错误消息：无效参数：TopicArn“


谁能帮我这个？

最佳答案

我认为您的主题ARN尚不存在。检查它是否存在或显式创建它。

这是您的HelloWorldSNS：

public class HelloWorldSNS {

    public static void main(String[] args) throws Exception {

        AmazonSNSClient client = Region.getRegion(Regions.EU_CENTRAL_1).createClient(AmazonSNSClient.class, null,
                null);
        CreateTopicResult createTopic = client.createTopic("myTopic");
        SubscribeResult subscribe = client.subscribe(createTopic.getTopicArn(), "email", "[email protected]");
        PublishRequest publishRequest = new PublishRequest(createTopic.getTopicArn(), "Test message");
        client.publish(publishRequest);
    }
}