升级到 tomcat 8.5 后无法从链中的任何提供商加载 AWS 凭证

Question

我们的遗留 java web 应用程序在 aws elastic beanstalk 上运行，它承担 IAM 角色来访问 SES。 今天将elastic beanstalk环境从Tomcat 7升级到Tomcat 8，将spring库从3.2.1升级到4.0.0后，SES客户端停止工作。 下面是直到昨天还可以正常发送电子邮件的代码：

AmazonSimpleEmailService client = AmazonSimpleEmailServiceClientBuilder.standard()
                    .withCredentials(com.amazonaws.auth.DefaultAWSCredentialsProviderChain.getInstance())
                    .withRegion(Regions.US_EAST_1).build();

它抛出以下异常

SEVERE [http-nio-8080-exec-8] The email was not sent.
    com.amazonaws.SdkClientException: Unable to load AWS credentials from any provider in the chain: [EnvironmentVariableCredentialsProvider: Unable to load AWS credentials from environment variables (AWS_ACCESS_KEY_ID (or AWS_ACCESS_KEY) and AWS_SECRET_KEY (or AWS_SECRET_ACCESS_KEY)), SystemPropertiesCredentialsProvider: Unable to load AWS credentials from Java system properties (aws.accessKeyId and aws.secretKey), com.amazonaws.auth.profile.ProfileCredentialsProvider@79fc4ef8: profile file cannot be null, com.amazonaws.auth.EC2ContainerCredentialsProviderWrapper@33e618b9: Unauthorized (Service: null; Status Code: 401; Error Code: null; Request ID: null)]

我也尝试将AWS_ACCESS_KEY_ID和AWS_SECRET_KEY添加为环境变量，但没有成功。 搜索 web，检查 aws 文档但没有任何运气。

Answer 1

我通过升级到最新的 AWS SDK 版本解决了这个问题。