Поместите / прочитайте файлы в S3 bucket, используя JAVA

Question

Я пытаюсь поместить файл на S3 и читать файлы из сегментов S3, используя JAVA, но сталкиваюсь с Невозможно выполнить HTTP-запрос.

, пока я пытался вывести список сегментов, он работает нормально.

мне кажется, что работает только метод listBuckets (), в то время как все другие методы, такие как putObject (), listObjects (), createBucket () и т. Д. c выдают одну и ту же ошибку. Невозможно выполнить HTTP-запрос

Вот мой код, над которым я работаю, чтобы исправить, я использовал много методов, но ни один не работает, кроме listBuckets () -

package test;

import com.amazonaws.auth.AWSStaticCredentialsProvider;
import com.amazonaws.auth.BasicAWSCredentials;
import com.amazonaws.client.builder.AwsClientBuilder;
import com.amazonaws.regions.Regions;
import com.amazonaws.services.s3.AmazonS3;
import com.amazonaws.services.s3.AmazonS3ClientBuilder;
import com.amazonaws.services.s3.model.Bucket;
import com.amazonaws.services.s3.model.ObjectListing;
import com.amazonaws.services.s3.model.S3ObjectSummary;
import com.amazonaws.services.s3.model.PutObjectRequest;
import com.amazonaws.services.s3.model.ObjectMetadata;
import com.amazonaws.AmazonServiceException;
import com.amazonaws.SdkClientException;

 public class JavaS3Conn {

//private static Logger log = Logger.getLogger(JavaS3Conn.class);

public static void main(String[] args) {

    String access_key = "access_key";
    String secret_key = "secret_key";
    String end_point = "http://end_point:port/";
    String bucketName = "bucketName";
    String stringObjKeyName = "Hello_S3.txt";
    String fileObjKeyName = "Hello_S3.txt";
    String fileName = "C:\\Users\\Desktop\\hello_S3.txt";
    try {
    BasicAWSCredentials creds = new BasicAWSCredentials(access_key, secret_key); 
ClientConfiguration clientConfig = new ClientConfiguration()
                .withProxyHost("wdctestlab-ecs1-node1.systems.uk.hsbc").withProxyPort(9020)
                .withNonProxyHosts("");
    AmazonS3 s3Client = AmazonS3ClientBuilder.standard().withClientConfiguration(clientConfig).withCredentials(new AWSStaticCredentialsProvider(creds)).withEndpointConfiguration(new AwsClientBuilder.EndpointConfiguration(end_point,Regions.DEFAULT_REGION.getName())).build();
    /*
    if(s3Client.doesBucketExistV2(bucketName)) {
        System.out.println("Bucket name is not available."
          + " Try again with a different Bucket name.");
        return;
    }*/


    //s3Client.createBucket(bucketName);

    ObjectListing objectListing = s3Client.listObjects(bucketName);
    for(S3ObjectSummary os : objectListing.getObjectSummaries()) {
        System.out.println(os.getKey());
    }
    /*
    s3Client.putObject(
              bucketName, 
              stringObjKeyName, 
              "Uploaded String Object"
            );
    */
    PutObjectRequest request = new PutObjectRequest(bucketName, fileObjKeyName, new File(fileName));
    ObjectMetadata metadata = new ObjectMetadata();
    metadata.setContentType("plain/text");
    metadata.addUserMetadata("x-amz-meta-title", "someTitle");
    request.setMetadata(metadata);
    //s3Client.putObject(request);
    //s3Client.listObjects(bucketName);

    for (Bucket bucket : s3Client.listBuckets()) {
        System.out.println(" - " + bucket.getName());
    }

    } catch (AmazonServiceException e) {
        e.printStackTrace();
    } catch (SdkClientException e) {
        e.printStackTrace();            

    }

}

}

Ошибка -

 com.amazonaws.SdkClientException: Unable to execute HTTP request: bucket.endpoint
    at 
 com.amazonaws.http.AmazonHttpClient$RequestExecutor.handleRetryableException(AmazonHttpClient.java:1175 
     )
         at com.amazonaws.http.AmazonHttpClient$RequestExecutor.executeHelper(AmazonHttpClient.java:1121)
    at com.amazonaws.http.AmazonHttpClient$RequestExecutor.doExecute(AmazonHttpClient.java:770)
    at com.amazonaws.http.AmazonHttpClient$RequestExecutor.executeWithTimer(AmazonHttpClient.java:744)
    at com.amazonaws.http.AmazonHttpClient$RequestExecutor.execute(AmazonHttpClient.java:726)
    at com.amazonaws.http.AmazonHttpClient$RequestExecutor.access$500(AmazonHttpClient.java:686)
    at com.amazonaws.http.AmazonHttpClient$RequestExecutionBuilderImpl.execute(AmazonHttpClient.java:668)
    at com.amazonaws.http.AmazonHttpClient.execute(AmazonHttpClient.java:532)
    at com.amazonaws.http.AmazonHttpClient.execute(AmazonHttpClient.java:512)
    at com.amazonaws.services.s3.AmazonS3Client.invoke(AmazonS3Client.java:4914)
    at com.amazonaws.services.s3.AmazonS3Client.invoke(AmazonS3Client.java:4860)
    at com.amazonaws.services.s3.AmazonS3Client.invoke(AmazonS3Client.java:4854)
    at com.amazonaws.services.s3.AmazonS3Client.listObjects(AmazonS3Client.java:880)
    at com.amazonaws.services.s3.AmazonS3Client.listObjects(AmazonS3Client.java:848)
    at test.JavaS3Conn.main(JavaS3Conn.java:51)
Caused by: java.net.UnknownHostException: bucket.endpoint
    at java.net.InetAddress.getAllByName0(InetAddress.java:1280)
    at java.net.InetAddress.getAllByName(InetAddress.java:1192)
    at java.net.InetAddress.getAllByName(InetAddress.java:1126)
    at com.amazonaws.SystemDefaultDnsResolver.resolve(SystemDefaultDnsResolver.java:27)
    at com.amazonaws.http.DelegatingDnsResolver.resolve(DelegatingDnsResolver.java:38)
    at org.apache.http.impl.conn.DefaultHttpClientConnectionOperator.connect(DefaultHttpClientConnectionOperator.java:111)
    at org.apache.http.impl.conn.PoolingHttpClientConnectionManager.connect(PoolingHttpClientConnectionManager.java:353)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:497)
    at com.amazonaws.http.conn.ClientConnectionManagerFactory$Handler.invoke(ClientConnectionManagerFactory.java:76)
    at com.amazonaws.http.conn.$Proxy3.connect(Unknown Source)
    at org.apache.http.impl.execchain.MainClientExec.establishRoute(MainClientExec.java:380)
    at org.apache.http.impl.execchain.MainClientExec.execute(MainClientExec.java:236)
    at org.apache.http.impl.execchain.ProtocolExec.execute(ProtocolExec.java:184)
    at org.apache.http.impl.client.InternalHttpClient.doExecute(InternalHttpClient.java:184)
    at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:82)
    at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:55)
    at com.amazonaws.http.apache.client.impl.SdkHttpClient.execute(SdkHttpClient.java:72)
    at com.amazonaws.http.AmazonHttpClient$RequestExecutor.executeOneRequest(AmazonHttpClient.java:1297)
    at com.amazonaws.http.AmazonHttpClient$RequestExecutor.executeHelper(AmazonHttpClient.java:1113)

Кажется, что я должен добавить конфигурацию клиента, которая решает мою проблему невозможности выполнить HTTP

ClientConfiguration clientConfig = new ClientConfiguration()
                .withProxyHost("wdctestlab-ecs1-node1.systems.uk.hsbc").withProxyPort(9020)
                .withNonProxyHosts("");