ListObjects.java

/*
 * MinIO Java SDK for Amazon S3 Compatible Cloud Storage, (C) 2015 MinIO, Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     https://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

import io.minio.ListObjectsArgs;
import io.minio.MinioClient;
import io.minio.Result;
import io.minio.errors.MinioException;
import io.minio.messages.Item;
import java.io.IOException;
import java.security.InvalidKeyException;
import java.security.NoSuchAlgorithmException;

public class ListObjects {
  /** MinioClient.listObjects() example. */
  public static void main(String[] args)
      throws IOException, NoSuchAlgorithmException, InvalidKeyException {
    try {
      /* play.min.io for test and development. */
      MinioClient minioClient =
          MinioClient.builder()
              .endpoint("https://play.min.io")
              .credentials("Q3AM3UQ867SPQQA43P2F", "zuf+tfteSlswRu7BJ86wekitnifILbZam1KYY3TG")
              .build();

      /* Amazon S3: */
      // MinioClient minioClient =
      //     MinioClient.builder()
      //         .endpoint("https://s3.amazonaws.com")
      //         .credentials("YOUR-ACCESSKEY", "YOUR-SECRETACCESSKEY")
      //         .build();

      {
        // Lists objects information.
        Iterable<Result<Item>> results =
            minioClient.listObjects(ListObjectsArgs.builder().bucket("my-bucketname").build());

        for (Result<Item> result : results) {
          Item item = result.get();
          System.out.println(item.lastModified() + "\t" + item.size() + "\t" + item.objectName());
        }
      }

      {
        // Lists objects information recursively.
        Iterable<Result<Item>> results =
            minioClient.listObjects(
                ListObjectsArgs.builder().bucket("my-bucketname").recursive(true).build());

        for (Result<Item> result : results) {
          Item item = result.get();
          System.out.println(item.lastModified() + "\t" + item.size() + "\t" + item.objectName());
        }
      }

      {
        // Lists maximum 100 objects information those names starts with 'E' and after
        // 'ExampleGuide.pdf'.
        Iterable<Result<Item>> results =
            minioClient.listObjects(
                ListObjectsArgs.builder()
                    .bucket("my-bucketname")
                    .startAfter("ExampleGuide.pdf")
                    .prefix("E")
                    .maxKeys(100)
                    .build());

        for (Result<Item> result : results) {
          Item item = result.get();
          System.out.println(item.lastModified() + "\t" + item.size() + "\t" + item.objectName());
        }
      }

      {
        // Lists maximum 100 objects information with version those names starts with 'E' and after
        // 'ExampleGuide.pdf'.
        Iterable<Result<Item>> results =
            minioClient.listObjects(
                ListObjectsArgs.builder()
                    .bucket("my-bucketname")
                    .startAfter("ExampleGuide.pdf")
                    .prefix("E")
                    .maxKeys(100)
                    .includeVersions(true)
                    .build());

        for (Result<Item> result : results) {
          Item item = result.get();
          System.out.println(
              item.lastModified()
                  + "\t"
                  + item.size()
                  + "\t"
                  + item.objectName()
                  + " ["
                  + item.versionId()
                  + "]");
        }
      }
    } catch (MinioException e) {
      System.out.println("Error occurred: " + e);
    }
  }
}