春云AWS与Transfermanager：无法完成转移：连接池关闭

问题描述：

我使用春季启动1.5.1.RELEASE与春云AWS 1.1.3.RELEASE将文件上传到AWS的S3桶。春云AWS与Transfermanager：无法完成转移：连接池关闭

我想用TransferManager上传文件到S3。但不幸的是，我在上传时收到以下错误消息，并且文件不会被上传到S3：

2017-02-26 12:36:27.004 ERROR 32696 --- [ask-scheduler-8] o.s.integration.handler.LoggingHandler : com.amazonaws.AmazonClientException: Unable to complete transfer: Connection pool shut down 
    at com.amazonaws.services.s3.transfer.internal.AbstractTransfer.unwrapExecutionException(AbstractTransfer.java:277) 
    at com.amazonaws.services.s3.transfer.internal.AbstractTransfer.rethrowExecutionException(AbstractTransfer.java:261) 
    at com.amazonaws.services.s3.transfer.internal.UploadImpl.waitForUploadResult(UploadImpl.java:66) 
    at com.my.package.aws.S3Configuration.withTransferManager(S3Configuration.java:50) 
    at sun.reflect.GeneratedMethodAccessor119.invoke(Unknown Source) 
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) 
    at java.lang.reflect.Method.invoke(Method.java:498) 
    at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:65) 
    at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) 
    at org.springframework.scheduling.concurrent.ReschedulingRunnable.run(ReschedulingRunnable.java:81) 
    at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) 
    at java.util.concurrent.FutureTask.run(FutureTask.java:266) 
    at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$201(ScheduledThreadPoolExecutor.java:180) 
    at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:293) 
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) 
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) 
    at java.lang.Thread.run(Thread.java:745)

这是我的Java配置文件：

@EnableContextResourceLoader 
@EnableContextCredentials(accessKey="XXXX", secretKey="YYYY") 
@EnableAsync 
@ComponentScan("com.my.package") 
@EnableJpaRepositories(basePackages = "com.my.package.repository") 
@EnableScheduling 
@SpringBootApplication 
public class S3UploadApplication { 

    public static void main(final String[] args) { 
     SpringApplication.run(S3UploadApplication.class, args); 
    } 
}

而且配置Bean的S3有：

@Configuration 
public class S3Configuration { 
@Autowired 
private AmazonS3Client amazonS3client; 

public void withTransferManager() { 
TransferManager transferManager = new TransferManager(this.amazonS3client); 
ObjectMetadata objectMetadata = new ObjectMetadata(); 
     objectMetadata.setSSEAlgorithm(ObjectMetadata.AES_256_SERVER_SIDE_ENCRYPTION); 
Upload uploaded=transferManager.upload("myBucket","test.txt",new FileInputStream(new File("TestFile.txt")),objectMetadata); 
uploaded.waitForCompletion(); 
transferManager.shutdownNow(); 
} 
}

我也试过这个solution，那就是在这两个豆类BasicAWSCredentials和AmazonS3Client EXP合法地进行配置，但仍显示相同的错误。

答

我认为你在某个地方关闭了S3客户端。或TransferManager相关的代码被称为更多一次。在aws中看到此问题之后sdk https://github.com/aws/aws-sdk-java/issues/1282

因此，解决方案是每次需要使用它时创建一个S3 Client和TransferManager的新实例，或者不要关闭它们。

从这个问题来看，最佳实践似乎是不关闭S3客户端/传输管理器，因为它提供了更好的性能。

春云AWS与Transfermanager：无法完成转移：连接池关闭

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