AWS开发工具包 - AmazonS3Client不会关闭

Question

我发现创建一个AmazonS3Client意味着我的进程即使在什么都不做的时候也会挂起.我正在进行文件上传,但我已将其修改为此.

当我运行以下代码(带有工作凭据)时,它会输出"Simple is finished",但该过程不会退出,直到最终maven:exec告诉我:

Simple is finished
[WARNING] thread Thread[java-sdk-http-connection-reaper,5,Simple] was interrupted but is still alive after waiting at least 15000msecs
[WARNING] thread Thread[java-sdk-http-connection-reaper,5,Simple] will linger despite being asked to die via interruption
[WARNING] NOTE: 1 thread(s) did not finish despite being asked to  via interruption. This is not a problem with exec:java, it is a problem with the running code. Although not serious, it should be remedied.
[WARNING] Couldn't destroy threadgroup org.codehaus.mojo.exec.ExecJavaMojo$IsolatedThreadGroup[name=Simple,maxpri=10]
java.lang.IllegalThreadStateException

代码:

    import com.amazonaws.auth.AWSCredentials;
    import com.amazonaws.auth.BasicAWSCredentials;
    import com.amazonaws.services.s3.AmazonS3;
    import com.amazonaws.services.s3.AmazonS3Client;

    public class Simple {

        private static String accessKey = "XXX";
        private static String secretKey = "ZZZ";

        public static void main(String[] args) {

            AWSCredentials credentials = new BasicAWSCredentials(accessKey, secretKey);
            AmazonS3 s3client = new AmazonS3Client(credentials);
            System.out.println("Simple is finished");        
        }

    }

它应该像这样工作吗？有没有办法杀掉它？

编辑:添加版本信息:

<dependency>
    <groupId>com.amazonaws</groupId>
    <artifactId>aws-java-sdk</artifactId>
    <version>1.9.33</version>
</dependency>

Answer 1

其中任何一个似乎都有效:

((AmazonS3Client) s3client).shutdown();

要么

try {
    com.amazonaws.http.IdleConnectionReaper.shutdown();
} catch (Throwable t) {
    // etc
}

虽然我不确定它们是多么正确.