AWS - 创建一个 AmazonSNSClient

Question

我想创建一个AmazonSNSClient，我使用这段代码：

AmazonSNSClient snsClient = (AmazonSNSClient) AmazonSNSClientBuilder.standard().withCredentials(new AWSStaticCredentialsProvider(new PropertiesCredentials(is))).build();

但我得到这个错误：

Exception in thread "main" java.lang.UnsupportedOperationException: Client is immutable when created with the builder.

at com.amazonaws.AmazonWebServiceClient.checkMutability(AmazonWebServiceClient.java:937)
at com.amazonaws.AmazonWebServiceClient.setRegion(AmazonWebServiceClient.java:422)

Answer 1

如果你可以把你传递的参数作为 is 更好，否则你可以尝试构建客户端，如下所示，

如果您的 is 指的是凭据文件，那么您可以通过此方法直接使用凭据，

BasicAWSCredentials basicAwsCredentials = new BasicAWSCredentials(AccessKey,SecretAccessKey);
AmazonSNS snsClient = AmazonSNSClient
                      .builder()
                      .withRegion(your_region)
                      .withCredentials(new AWSStaticCredentialsProvider(basicAwsCredentials))
                      .build();

否则，如果您要通过 IAM 角色授予权限，则可以使用如下所示的 InstanceProfileCredentialProvider，

AmazonSNS sns = AmazonSNSClientBuilder
                 .standard()
                 .withCredentials(new InstanceProfileCredentialsProvider(true))
                 .build();