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存儲空間（Bucket）是用來存儲對象（Object）的容器。對象都隸屬于存儲空間。存儲空間按照字母順序排列。您可以列舉當前賬號所有地域下符合指定條件的存儲空間。

注意事項

本文以華東1（杭州）外網Endpoint為例。如果您希望通過與OSS同地域的其他阿里云產品訪問OSS，請使用內網Endpoint。關于OSS支持的Region與Endpoint的對應關系，請參見OSS訪問域名、數據中心、開放端口。
本文以從環境變量讀取訪問憑證為例。如何配置訪問憑證，請參見Java配置訪問憑證。
本文以OSS域名新建OSSClient為例。如果您希望通過自定義域名、STS等方式新建OSSClient，請參見新建OSSClient。
要列舉存儲空間，您必須具有oss:ListBuckets權限。具體操作，請參見為RAM用戶授權自定義的權限策略。
如果有低頻類型或歸檔類型的存儲空間，請使用Java SDK 2.6.0及以上版本。
以下代碼僅支持列舉當前阿里云賬號下所有地域的存儲空間，不支持列舉指定地域的存儲空間。列舉結果與填寫endpoint關聯的地域無關。

列舉所有存儲空間

以下代碼用于列舉當前賬號所有地域下的存儲空間。

import com.aliyun.oss.ClientException;
import com.aliyun.oss.OSS;
import com.aliyun.oss.common.auth.*;
import com.aliyun.oss.OSSClientBuilder;
import com.aliyun.oss.OSSException;
import com.aliyun.oss.model.Bucket;

import java.util.List;

public class Demo {

    public static void main(String[] args) throws Exception {
        // 以華東1（杭州）為例，Endpoint填寫為https://oss-cn-hangzhou.aliyuncs.com。
        String endpoint = "https://oss-cn-hangzhou.aliyuncs.com";
        // 填寫Bucket所在地域。以華東1（杭州）為例，Region填寫為cn-hangzhou。
        String region = "cn-hangzhou";
        
        // 從環境變量中獲取訪問憑證。運行本代碼示例之前，請確保已設置環境變量OSS_ACCESS_KEY_ID和OSS_ACCESS_KEY_SECRET。
        EnvironmentVariableCredentialsProvider credentialsProvider = CredentialsProviderFactory.newEnvironmentVariableCredentialsProvider();

        // 創建OSSClient實例。
        ClientBuilderConfiguration clientBuilderConfiguration = new ClientBuilderConfiguration();
        clientBuilderConfiguration.setSignatureVersion(SignVersion.V4);        
        OSS ossClient = OSSClientBuilder.create()
        .endpoint(endpoint)
        .credentialsProvider(credentialsProvider)
        .clientConfiguration(clientBuilderConfiguration)
        .region(region)               
        .build();

        try {
            // 列舉當前賬號所有地域下的存儲空間。
            List<Bucket> buckets = ossClient.listBuckets();
            for (Bucket bucket : buckets) {
                System.out.println(" - " + bucket.getName());
            }
        } catch (OSSException oe) {
            System.out.println("Caught an OSSException, which means your request made it to OSS, "
                    + "but was rejected with an error response for some reason.");
            System.out.println("Error Message:" + oe.getErrorMessage());
            System.out.println("Error Code:" + oe.getErrorCode());
            System.out.println("Request ID:" + oe.getRequestId());
            System.out.println("Host ID:" + oe.getHostId());
        } catch (ClientException ce) {
            System.out.println("Caught an ClientException, which means the client encountered "
                    + "a serious internal problem while trying to communicate with OSS, "
                    + "such as not being able to access the network.");
            System.out.println("Error Message:" + ce.getMessage());
        } finally {
            if (ossClient != null) {
                ossClient.shutdown();
            }
        }
    }
}

列舉資源組中的存儲空間

以下代碼用于列舉當前賬號指定資源組中的存儲空間。

說明

一個阿里云賬號包含一個默認資源組和多個自定義的資源組。如果在創建存儲空間時未指定資源組ID，則創建的存儲空間均屬于默認資源組。

import com.aliyun.oss.ClientException;
import com.aliyun.oss.OSS;
import com.aliyun.oss.common.auth.*;
import com.aliyun.oss.OSSClientBuilder;
import com.aliyun.oss.OSSException;
import com.aliyun.oss.model.*;

public class Demo {

    public static void main(String[] args) throws Exception {
        // 以華東1（杭州）為例，Endpoint填寫為https://oss-cn-hangzhou.aliyuncs.com。
        String endpoint = "https://oss-cn-hangzhou.aliyuncs.com";
        // 從環境變量中獲取訪問憑證。運行本代碼示例之前，請確保已設置環境變量OSS_ACCESS_KEY_ID和OSS_ACCESS_KEY_SECRET。
        EnvironmentVariableCredentialsProvider credentialsProvider = CredentialsProviderFactory.newEnvironmentVariableCredentialsProvider();
        // 填寫資源組ID。如果未填寫資源組ID，則列舉默認資源組中的存儲空間。
        String rsId = "rg-aek27tc****";
        // 填寫Bucket所在地域。以華東1（杭州）為例，Region填寫為cn-hangzhou。
        String region = "cn-hangzhou";
        
        // 創建OSSClient實例。
        ClientBuilderConfiguration clientBuilderConfiguration = new ClientBuilderConfiguration();
        clientBuilderConfiguration.setSignatureVersion(SignVersion.V4);        
        OSS ossClient = OSSClientBuilder.create()
        .endpoint(endpoint)
        .credentialsProvider(credentialsProvider)
        .clientConfiguration(clientBuilderConfiguration)
        .region(region)               
        .build();

        try {
            // 列舉存儲空間。
            ListBucketsRequest listBucketsRequest = new ListBucketsRequest();
            // 列舉當前賬號指定資源組中的存儲空間。
            listBucketsRequest.setResourceGroupId(rsId);
            BucketList bucketList = ossClient.listBuckets(listBucketsRequest);
            for (Bucket bucket : bucketList.getBucketList()) {
                System.out.println(" - " + bucket.getName());
            }
        } catch (OSSException oe) {
            System.out.println("Caught an OSSException, which means your request made it to OSS, "
                    + "but was rejected with an error response for some reason.");
            System.out.println("Error Message:" + oe.getErrorMessage());
            System.out.println("Error Code:" + oe.getErrorCode());
            System.out.println("Request ID:" + oe.getRequestId());
            System.out.println("Host ID:" + oe.getHostId());
        } catch (ClientException ce) {
            System.out.println("Caught an ClientException, which means the client encountered "
                    + "a serious internal problem while trying to communicate with OSS, "
                    + "such as not being able to access the network.");
            System.out.println("Error Message:" + ce.getMessage());
        } finally {
            if (ossClient != null) {
                ossClient.shutdown();
            }
        }
    }
}

列舉指定前綴的存儲空間

以下代碼用于列舉當前賬號所有地域下以example為前綴（prefix）的存儲空間。

import com.aliyun.oss.ClientException;
import com.aliyun.oss.OSS;
import com.aliyun.oss.common.auth.*;
import com.aliyun.oss.OSSClientBuilder;
import com.aliyun.oss.OSSException;
import com.aliyun.oss.model.Bucket;
import com.aliyun.oss.model.BucketList;
import com.aliyun.oss.model.ListBucketsRequest;

public class Demo {

    public static void main(String[] args) throws Exception {
        // 以華東1（杭州）為例，Endpoint填寫為https://oss-cn-hangzhou.aliyuncs.com。
        String endpoint = "https://oss-cn-hangzhou.aliyuncs.com";
        // 填寫Bucket所在地域。以華東1（杭州）為例，Region填寫為cn-hangzhou。
        String region = "cn-hangzhou";
        
        // 從環境變量中獲取訪問憑證。運行本代碼示例之前，請確保已設置環境變量OSS_ACCESS_KEY_ID和OSS_ACCESS_KEY_SECRET。
        EnvironmentVariableCredentialsProvider credentialsProvider = CredentialsProviderFactory.newEnvironmentVariableCredentialsProvider();

        // 創建OSSClient實例。
        ClientBuilderConfiguration clientBuilderConfiguration = new ClientBuilderConfiguration();
        clientBuilderConfiguration.setSignatureVersion(SignVersion.V4);        
        OSS ossClient = OSSClientBuilder.create()
        .endpoint(endpoint)
        .credentialsProvider(credentialsProvider)
        .clientConfiguration(clientBuilderConfiguration)
        .region(region)               
        .build();

        try {
            ListBucketsRequest listBucketsRequest = new ListBucketsRequest();
            // 列舉當前賬號所有地域下指定前綴的存儲空間。            
            listBucketsRequest.setPrefix("example");
            BucketList bucketList = ossClient.listBuckets(listBucketsRequest);
            for (Bucket bucket : bucketList.getBucketList()) {
                System.out.println(" - " + bucket.getName());
            }
        } catch (OSSException oe) {
            System.out.println("Caught an OSSException, which means your request made it to OSS, "
                    + "but was rejected with an error response for some reason.");
            System.out.println("Error Message:" + oe.getErrorMessage());
            System.out.println("Error Code:" + oe.getErrorCode());
            System.out.println("Request ID:" + oe.getRequestId());
            System.out.println("Host ID:" + oe.getHostId());
        } catch (ClientException ce) {
            System.out.println("Caught an ClientException, which means the client encountered "
                    + "a serious internal problem while trying to communicate with OSS, "
                    + "such as not being able to access the network.");
            System.out.println("Error Message:" + ce.getMessage());
        } finally {
            if (ossClient != null) {
                ossClient.shutdown();
            }
        }
    }
}

列舉指定marker之后的存儲空間

以下代碼用于列舉當前賬號所有地域下名稱的字母序排在examplebucket之后的存儲空間。

import com.aliyun.oss.ClientException;
import com.aliyun.oss.OSS;
import com.aliyun.oss.common.auth.*;
import com.aliyun.oss.OSSClientBuilder;
import com.aliyun.oss.OSSException;
import com.aliyun.oss.model.*;
import java.util.List;

public class Demo {
    public static void main(String[] args) throws com.aliyuncs.exceptions.ClientException {
        // 以華東1（杭州）為例，Endpoint填寫為https://oss-cn-hangzhou.aliyuncs.com。
        String endpoint = "https://oss-cn-hangzhou.aliyuncs.com";
        // 從環境變量中獲取訪問憑證。運行本代碼示例之前，請確保已設置環境變量OSS_ACCESS_KEY_ID和OSS_ACCESS_KEY_SECRET。
        EnvironmentVariableCredentialsProvider credentialsProvider = CredentialsProviderFactory.newEnvironmentVariableCredentialsProvider();
        // 填寫Bucket名稱，例如examplebucket。
        String bucketName = "examplebucket";
        // 設置每頁列舉200個存儲空間。
        int maxKeys = 200;
        // 填寫Bucket所在地域。以華東1（杭州）為例，Region填寫為cn-hangzhou。
        String region = "cn-hangzhou";
        
        // 創建OSSClient實例。
        ClientBuilderConfiguration clientBuilderConfiguration = new ClientBuilderConfiguration();
        clientBuilderConfiguration.setSignatureVersion(SignVersion.V4);        
        OSS ossClient = OSSClientBuilder.create()
        .endpoint(endpoint)
        .credentialsProvider(credentialsProvider)
        .clientConfiguration(clientBuilderConfiguration)
        .region(region)               
        .build();

        try {
            // 列舉當前賬號所有地域下字母序排在指定marker之后的存儲空間。
            String nextMarker = bucketName;
            BucketList bucketListing;

            do {
                bucketListing = ossClient.listBuckets(new ListBucketsRequest().withMarker(nextMarker).withMaxKeys(maxKeys));

                List<Bucket> sums = bucketListing.getBucketList();
                for (Bucket s : sums) {
                    System.out.println("\t" + s.getName());
                }

                nextMarker = bucketListing.getNextMarker();

            } while (bucketListing.isTruncated());
        } catch (OSSException oe) {
            System.out.println("Caught an OSSException, which means your request made it to OSS, "
                    + "but was rejected with an error response for some reason.");
            System.out.println("Error Message:" + oe.getErrorMessage());
            System.out.println("Error Code:" + oe.getErrorCode());
            System.out.println("Request ID:" + oe.getRequestId());
            System.out.println("Host ID:" + oe.getHostId());
        } catch (ClientException ce) {
            System.out.println("Caught an ClientException, which means the client encountered "
                    + "a serious internal problem while trying to communicate with OSS, "
                    + "such as not being able to access the network.");
            System.out.println("Error Message:" + ce.getMessage());
        } finally {
            if (ossClient != null) {
                ossClient.shutdown();
            }
        }
    }
}

列舉指定個數的存儲空間

以下代碼用于列舉當前賬號所有地域下的存儲空間，并指定列舉的最大個數為500。

import com.aliyun.oss.ClientException;
import com.aliyun.oss.OSS;
import com.aliyun.oss.common.auth.*;
import com.aliyun.oss.OSSClientBuilder;
import com.aliyun.oss.OSSException;
import com.aliyun.oss.model.Bucket;
import com.aliyun.oss.model.BucketList;
import com.aliyun.oss.model.ListBucketsRequest;

public class Demo {

    public static void main(String[] args) throws Exception {
        // 以華東1（杭州）為例，Endpoint填寫為https://oss-cn-hangzhou.aliyuncs.com。
        String endpoint = "https://oss-cn-hangzhou.aliyuncs.com";
        // 填寫Bucket所在地域。以華東1（杭州）為例，Region填寫為cn-hangzhou。
        String region = "cn-hangzhou";
                
        // 從環境變量中獲取訪問憑證。運行本代碼示例之前，請確保已設置環境變量OSS_ACCESS_KEY_ID和OSS_ACCESS_KEY_SECRET。
        EnvironmentVariableCredentialsProvider credentialsProvider = CredentialsProviderFactory.newEnvironmentVariableCredentialsProvider();

        // 創建OSSClient實例。
        ClientBuilderConfiguration clientBuilderConfiguration = new ClientBuilderConfiguration();
        clientBuilderConfiguration.setSignatureVersion(SignVersion.V4);        
        OSS ossClient = OSSClientBuilder.create()
        .endpoint(endpoint)
        .credentialsProvider(credentialsProvider)
        .clientConfiguration(clientBuilderConfiguration)
        .region(region)               
        .build();

        try {
            ListBucketsRequest listBucketsRequest = new ListBucketsRequest();           
            // 列舉當前賬號所有地域下的存儲空間，限定此次列舉存儲空間的最大個數為500。默認值為100，最大值為1000。
            listBucketsRequest.setMaxKeys(500);
            BucketList bucketList = ossClient.listBuckets(listBucketsRequest);
            for (Bucket bucket : bucketList.getBucketList()) {
                System.out.println(" - " + bucket.getName());
            }
        } catch (OSSException oe) {
            System.out.println("Caught an OSSException, which means your request made it to OSS, "
                    + "but was rejected with an error response for some reason.");
            System.out.println("Error Message:" + oe.getErrorMessage());
            System.out.println("Error Code:" + oe.getErrorCode());
            System.out.println("Request ID:" + oe.getRequestId());
            System.out.println("Host ID:" + oe.getHostId());
        } catch (ClientException ce) {
            System.out.println("Caught an ClientException, which means the client encountered "
                    + "a serious internal problem while trying to communicate with OSS, "
                    + "such as not being able to access the network.");
            System.out.println("Error Message:" + ce.getMessage());
        } finally {
            if (ossClient != null) {
                ossClient.shutdown();
            }
        }
    }
}

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Java列舉存儲空間