Este tópico descreve como listar objetos em um bucket com versionamento habilitado. É possível listar todos os objetos, um número específico de objetos e objetos cujos nomes contenham um prefixo específico.
Observações de uso
Neste tópico, usa-se o endpoint público da região china (Hangzhou). Para acessar o oss a partir de outros service do Alibaba Cloud na mesma região, use um endpoint interno. Para obter detalhes sobre as regiões e endpoints compatíveis, consulte Regions and endpoints.
Neste tópico, as credenciais de acesso são obtidas de variáveis de ambiente. Para mais informações, consulte 配置访问凭证.
Este tópico demonstra como crie uma instância OSSClient usando um endpoint do oss. Para configurações alternativas, como uso de domínio personalizado ou autenticação com credenciais do Security Token Service (STS), consulte Client configuration.
Para listar objetos, você precisa ter a permissão
oss:ListObjectVersions. Para mais informações, consulte Grant a custom policy.
Listar as versões de todos os objetos em um bucket
O código a seguir mostra como listar as versões de todos os objetos, incluindo marcadores de exclusão, em um bucket:
import com.aliyun.oss.*;
import com.aliyun.oss.common.auth.*;
import com.aliyun.oss.common.comm.SignVersion;
import com.aliyun.oss.model.*;
public class Demo {
public static void main(String[] args) throws Exception {
// In this example, the endpoint of the China (Hangzhou) region is used. Specify your actual endpoint.
String endpoint = "https://oss-cn-hangzhou.aliyuncs.com";
// Obtain access credentials from environment variables. Before you run the sample code, make sure that the OSS_ACCESS_KEY_ID and OSS_ACCESS_KEY_SECRET environment variables are configured.
EnvironmentVariableCredentialsProvider credentialsProvider = CredentialsProviderFactory.newEnvironmentVariableCredentialsProvider();
// Specify the name of the bucket. Example: examplebucket.
String bucketName = "examplebucket";
// Specify the region in which the bucket is located. For example, if the bucket is located in the China (Hangzhou) region, set the region to cn-hangzhou.
String region = "cn-hangzhou";
// Create an OSSClient instance.
// Call the shutdown method to release resources when the OSSClient is no longer in use.
ClientBuilderConfiguration clientBuilderConfiguration = new ClientBuilderConfiguration();
clientBuilderConfiguration.setSignatureVersion(SignVersion.V4);
OSS ossClient = OSSClientBuilder.create()
.endpoint(endpoint)
.credentialsProvider(credentialsProvider)
.clientConfiguration(clientBuilderConfiguration)
.region(region)
.build();
try {
// List the versions of all objects, including delete markers in the bucket.
String nextKeyMarker = null;
String nextVersionMarker = null;
VersionListing versionListing = null;
do {
ListVersionsRequest listVersionsRequest = new ListVersionsRequest()
.withBucketName(bucketName)
.withKeyMarker(nextKeyMarker)
.withVersionIdMarker(nextVersionMarker);
versionListing = ossClient.listVersions(listVersionsRequest);
for (OSSVersionSummary ossVersion : versionListing.getVersionSummaries()) {
System.out.println("key name: " + ossVersion.getKey());
System.out.println("versionid: " + ossVersion.getVersionId());
System.out.println("Is latest: " + ossVersion.isLatest());
System.out.println("Is delete marker: " + ossVersion.isDeleteMarker());
}
nextKeyMarker = versionListing.getNextKeyMarker();
nextVersionMarker = versionListing.getNextVersionIdMarker();
} while (versionListing.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();
}
}
}
}Listar as versões de objetos cujos nomes contenham um prefixo específico
O exemplo de código a seguir demonstra como listar as versões de objetos cujos nomes contenham um prefixo específico:
import com.aliyun.oss.*;
import com.aliyun.oss.common.auth.*;
import com.aliyun.oss.common.comm.SignVersion;
import com.aliyun.oss.internal.OSSConstants;
import com.aliyun.oss.model.*;
public class Demo {
public static void main(String[] args) throws Exception {
// In this example, the endpoint of the China (Hangzhou) region is used. Specify your actual endpoint.
String endpoint = "https://oss-cn-hangzhou.aliyuncs.com";
// Obtain access credentials from environment variables. Before you run the sample code, make sure that the OSS_ACCESS_KEY_ID and OSS_ACCESS_KEY_SECRET environment variables are configured.
EnvironmentVariableCredentialsProvider credentialsProvider = CredentialsProviderFactory.newEnvironmentVariableCredentialsProvider();
// Specify the name of the bucket. Example: examplebucket.
String bucketName = "examplebucket";
// Specify the region in which the bucket is located. For example, if the bucket is located in the China (Hangzhou) region, set the region to cn-hangzhou.
String region = "cn-hangzhou";
// Create an OSSClient instance.
// Call the shutdown method to release resources when the OSSClient is no longer in use.
ClientBuilderConfiguration clientBuilderConfiguration = new ClientBuilderConfiguration();
clientBuilderConfiguration.setSignatureVersion(SignVersion.V4);
OSS ossClient = OSSClientBuilder.create()
.endpoint(endpoint)
.credentialsProvider(credentialsProvider)
.clientConfiguration(clientBuilderConfiguration)
.region(region)
.build();
try {
// List the versions of objects whose names contain the "test-" prefix.
String prefix = "test-";
String nextKeyMarker = null;
String nextVersionMarker = null;
VersionListing versionListing = null;
do {
ListVersionsRequest listVersionsRequest = new ListVersionsRequest()
.withBucketName(bucketName)
.withKeyMarker(nextKeyMarker)
.withVersionIdMarker(nextVersionMarker)
.withEncodingType(OSSConstants.URL_ENCODING)
.withPrefix(prefix);
versionListing = ossClient.listVersions(listVersionsRequest);
// Display the version IDs of the objects.
for (OSSVersionSummary ossVersion : versionListing.getVersionSummaries()) {
System.out.println("key name: " + ossVersion.getKey());
System.out.println("versionid: " + ossVersion.getVersionId());
System.out.println("Is latest: " + ossVersion.isLatest());
System.out.println("Is delete marker: " + ossVersion.isDeleteMarker());
}
nextKeyMarker = versionListing.getNextKeyMarker();
nextVersionMarker = versionListing.getNextVersionIdMarker();
} while (versionListing.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();
}
}
}
}Listar as versões de um número específico de objetos
O código a seguir ilustra como listar as versões de um número específico de objetos:
import com.aliyun.oss.*;
import com.aliyun.oss.common.auth.*;
import com.aliyun.oss.common.comm.SignVersion;
import com.aliyun.oss.model.*;
public class Demo {
public static void main(String[] args) throws Exception {
// In this example, the endpoint of the China (Hangzhou) region is used. Specify your actual endpoint.
String endpoint = "https://oss-cn-hangzhou.aliyuncs.com";
// Obtain access credentials from environment variables. Before you run the sample code, make sure that the OSS_ACCESS_KEY_ID and OSS_ACCESS_KEY_SECRET environment variables are configured.
EnvironmentVariableCredentialsProvider credentialsProvider = CredentialsProviderFactory.newEnvironmentVariableCredentialsProvider();
// Specify the name of the bucket. Example: examplebucket.
String bucketName = "examplebucket";
// Specify the region in which the bucket is located. For example, if the bucket is located in the China (Hangzhou) region, set the region to cn-hangzhou.
String region = "cn-hangzhou";
// Create an OSSClient instance.
// Call the shutdown method to release resources when the OSSClient is no longer in use.
ClientBuilderConfiguration clientBuilderConfiguration = new ClientBuilderConfiguration();
clientBuilderConfiguration.setSignatureVersion(SignVersion.V4);
OSS ossClient = OSSClientBuilder.create()
.endpoint(endpoint)
.credentialsProvider(credentialsProvider)
.clientConfiguration(clientBuilderConfiguration)
.region(region)
.build();
try {
// Specify that up to 200 versions can be returned.
ListVersionsRequest listVersionsRequest = new ListVersionsRequest()
.withBucketName(bucketName)
.withMaxResults(200);
VersionListing versionListing = ossClient.listVersions(listVersionsRequest);
for (OSSVersionSummary ossVersion : versionListing.getVersionSummaries()) {
System.out.println("key name: " + ossVersion.getKey());
// If versioning is not enabled for the bucket, the version IDs of the listed objects are none.
System.out.println("versionid: " + ossVersion.getVersionId());
System.out.println("Is latest: " + ossVersion.isLatest());
System.out.println("Is delete marker: " + ossVersion.isDeleteMarker());
}
} 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();
}
}
}
}Listar as versões de todos os objetos por página
O exemplo de código a seguir mostra como listar as versões de todos os objetos por página:
import com.aliyun.oss.*;
import com.aliyun.oss.common.auth.*;
import com.aliyun.oss.common.comm.SignVersion;
import com.aliyun.oss.model.*;
public class Demo {
public static void main(String[] args) throws Exception {
// In this example, the endpoint of the China (Hangzhou) region is used. Specify your actual endpoint.
String endpoint = "https://oss-cn-hangzhou.aliyuncs.com";
// Obtain access credentials from environment variables. Before you run the sample code, make sure that the OSS_ACCESS_KEY_ID and OSS_ACCESS_KEY_SECRET environment variables are configured.
EnvironmentVariableCredentialsProvider credentialsProvider = CredentialsProviderFactory.newEnvironmentVariableCredentialsProvider();
// Specify the name of the bucket. Example: examplebucket.
String bucketName = "examplebucket";
// Specify that up to 200 versions are listed on each page.
int maxKeys = 200;
// Specify the region in which the bucket is located. For example, if the bucket is located in the China (Hangzhou) region, set the region to cn-hangzhou.
String region = "cn-hangzhou";
// Create an OSSClient instance.
// Call the shutdown method to release resources when the OSSClient is no longer in use.
ClientBuilderConfiguration clientBuilderConfiguration = new ClientBuilderConfiguration();
clientBuilderConfiguration.setSignatureVersion(SignVersion.V4);
OSS ossClient = OSSClientBuilder.create()
.endpoint(endpoint)
.credentialsProvider(credentialsProvider)
.clientConfiguration(clientBuilderConfiguration)
.region(region)
.build();
try {
// List the versions of all objects in the bucket by page.
String nextKeyMarker = null;
String nextVersionMarker = null;
VersionListing versionListing = null;
do {
ListVersionsRequest listVersionsRequest = new ListVersionsRequest()
.withBucketName(bucketName)
.withKeyMarker(nextKeyMarker)
.withMaxResults(maxKeys)
.withVersionIdMarker(nextVersionMarker);
versionListing = ossClient.listVersions(listVersionsRequest);
for (OSSVersionSummary ossVersion : versionListing.getVersionSummaries()) {
System.out.println("key name: " + ossVersion.getKey());
System.out.println("versionid: " + ossVersion.getVersionId());
System.out.println("Is latest: " + ossVersion.isLatest());
System.out.println("Is delete marker: " + ossVersion.isDeleteMarker());
}
nextKeyMarker = versionListing.getNextKeyMarker();
nextVersionMarker = versionListing.getNextVersionIdMarker();
} while (versionListing.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();
}
}
}
}Listar as versões de objetos cujos nomes contenham caracteres especiais
Se o nome de um objeto contiver algum dos caracteres especiais a seguir, codifique o nome em URL antes de transmitir o objeto:
Aspas simples (')
Aspas duplas (")
E comercial (&)
Sinais de maior e menor (<>)
Marcadores de pausa (、)
Caracteres chineses
O exemplo de código a seguir demonstra como listar as versões de objetos cujos nomes contenham caracteres especiais:
import com.aliyun.oss.*;
import com.aliyun.oss.common.auth.*;
import com.aliyun.oss.common.comm.SignVersion;
import com.aliyun.oss.internal.OSSConstants;
import com.aliyun.oss.model.*;
public class Demo {
public static void main(String[] args) throws Exception {
// In this example, the endpoint of the China (Hangzhou) region is used. Specify your actual endpoint.
String endpoint = "https://oss-cn-hangzhou.aliyuncs.com";
// Obtain access credentials from environment variables. Before you run the sample code, make sure that the OSS_ACCESS_KEY_ID and OSS_ACCESS_KEY_SECRET environment variables are configured.
EnvironmentVariableCredentialsProvider credentialsProvider = CredentialsProviderFactory.newEnvironmentVariableCredentialsProvider();
// Specify the name of the bucket. Example: examplebucket.
String bucketName = "examplebucket";
// Specify the region in which the bucket is located. For example, if the bucket is located in the China (Hangzhou) region, set the region to cn-hangzhou.
String region = "cn-hangzhou";
// Create an OSSClient instance.
// Call the shutdown method to release resources when the OSSClient is no longer in use.
ClientBuilderConfiguration clientBuilderConfiguration = new ClientBuilderConfiguration();
clientBuilderConfiguration.setSignatureVersion(SignVersion.V4);
OSS ossClient = OSSClientBuilder.create()
.endpoint(endpoint)
.credentialsProvider(credentialsProvider)
.clientConfiguration(clientBuilderConfiguration)
.region(region)
.build();
try {
// Specify that the object names in the response are URL-encoded.
String nextKeyMarker = null;
String nextVersionMarker = null;
VersionListing versionListing = null;
do {
ListVersionsRequest listVersionsRequest = new ListVersionsRequest()
.withBucketName(bucketName)
.withKeyMarker(nextKeyMarker)
.withVersionIdMarker(nextVersionMarker)
.withEncodingType(OSSConstants.URL_ENCODING);
versionListing = ossClient.listVersions(listVersionsRequest);
// Display the version IDs of the objects.
for (OSSVersionSummary ossVersion : versionListing.getVersionSummaries()) {
System.out.println("key name: " + ossVersion.getKey());
System.out.println("versionid: " + ossVersion.getVersionId());
System.out.println("Is latest: " + ossVersion.isLatest());
System.out.println("Is delete marker: " + ossVersion.isDeleteMarker());
}
nextKeyMarker = versionListing.getNextKeyMarker();
nextVersionMarker = versionListing.getNextVersionIdMarker();
} while (versionListing.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();
}
}
}
}Listar objetos em um diretório
O oss usa uma estrutura plana para armazenar objetos. Um diretório é um objeto de zero bytes cujo nome termina com uma barra (/). É possível fazer upload e baixe desse objeto. Por padrão, objetos cujos nomes terminam com barra (/) são exibidos como pastas no console do oss.
Especifique os parâmetros delimiter e prefix na requisição para listar objetos por diretório.
Ao definir prefix como o nome de um diretório na requisição, a listagem retorna os objetos e subdiretórios cujos nomes contenham esse prefixo.
Ao especifique um prefixo e defina delimiter como barra (/) na requisição, a listagem retorna os objetos e subdiretórios cujos nomes começam com o prefixo especificado dentro do diretório. Cada subdiretório aparece como um único elemento de resultado em CommonPrefixes. Os objetos e diretórios dentro desses subdiretórios não são listados.
Por exemplo, suponha que os quatro objetos a seguir estejam armazenados em um bucket: oss.jpg, fun/test.jpg, fun/movie/001.avi e fun/movie/007.avi. A barra (/) é usada como delimitador de diretório. Os exemplos a seguir descrevem como listar objetos em diretórios simulados.
-
Listar as versões de objetos no diretório raiz de um bucket
O código a seguir mostra como listar as versões de objetos no diretório raiz de um bucket:
import com.aliyun.oss.*; import com.aliyun.oss.common.auth.*; import com.aliyun.oss.common.comm.SignVersion; import com.aliyun.oss.internal.OSSConstants; import com.aliyun.oss.model.*; public class Demo { public static void main(String[] args) throws Exception { // In this example, the endpoint of the China (Hangzhou) region is used. Specify your actual endpoint. String endpoint = "https://oss-cn-hangzhou.aliyuncs.com"; // Obtain access credentials from environment variables. Before you run the sample code, make sure that the OSS_ACCESS_KEY_ID and OSS_ACCESS_KEY_SECRET environment variables are configured. EnvironmentVariableCredentialsProvider credentialsProvider = CredentialsProviderFactory.newEnvironmentVariableCredentialsProvider(); // Specify the name of the bucket. Example: examplebucket. String bucketName = "examplebucket"; // Specify the region in which the bucket is located. For example, if the bucket is located in the China (Hangzhou) region, set the region to cn-hangzhou. String region = "cn-hangzhou"; // Create an OSSClient instance. // Call the shutdown method to release resources when the OSSClient is no longer in use. ClientBuilderConfiguration clientBuilderConfiguration = new ClientBuilderConfiguration(); clientBuilderConfiguration.setSignatureVersion(SignVersion.V4); OSS ossClient = OSSClientBuilder.create() .endpoint(endpoint) .credentialsProvider(credentialsProvider) .clientConfiguration(clientBuilderConfiguration) .region(region) .build(); try { // Set the delimiter parameter to a forward slash (/) to list the versions of objects and the names of subdirectories in the root directory. String delimiter = "/"; String nextKeyMarker = null; String nextVersionMarker = null; VersionListing versionListing = null; do { ListVersionsRequest listVersionsRequest = new ListVersionsRequest() .withBucketName(bucketName) .withKeyMarker(nextKeyMarker) .withVersionIdMarker(nextVersionMarker) .withEncodingType(OSSConstants.URL_ENCODING) .withDelimiter(delimiter); versionListing = ossClient.listVersions(listVersionsRequest); // Display the version IDs of the objects. for (OSSVersionSummary ossVersion : versionListing.getVersionSummaries()) { System.out.println("key name: " + ossVersion.getKey()); System.out.println("versionid: " + ossVersion.getVersionId()); System.out.println("Is latest: " + ossVersion.isLatest()); System.out.println("Is delete marker: " + ossVersion.isDeleteMarker()); } // Display the names of subdirectories whose names end with a forward slash (/) in the root directory. for (String commonPrefix : versionListing.getCommonPrefixes()) { System.out.println("commonPrefix: " + commonPrefix); } nextKeyMarker = versionListing.getNextKeyMarker(); nextVersionMarker = versionListing.getNextVersionIdMarker(); } while (versionListing.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(); } } } }Exemplo de resposta
key name: oss.jpg versionid: CAEQEhiBgMCw8Y7FqBciIGIzMDE3MTEzOWRiMDRmZmFhMmRlMjljZWI0MWU4**** Is latest: true Is delete marker: false commonPrefix: fun/ -
Listar objetos e subdiretórios em um diretório específico
O código a seguir exemplifica como listar os objetos e subdiretórios em um diretório específico:
import com.aliyun.oss.*; import com.aliyun.oss.common.auth.*; import com.aliyun.oss.common.comm.SignVersion; import com.aliyun.oss.internal.OSSConstants; import com.aliyun.oss.model.*; public class Demo { public static void main(String[] args) throws Exception { // In this example, the endpoint of the China (Hangzhou) region is used. Specify your actual endpoint. String endpoint = "https://oss-cn-hangzhou.aliyuncs.com"; // Obtain access credentials from environment variables. Before you run the sample code, make sure that the OSS_ACCESS_KEY_ID and OSS_ACCESS_KEY_SECRET environment variables are configured. EnvironmentVariableCredentialsProvider credentialsProvider = CredentialsProviderFactory.newEnvironmentVariableCredentialsProvider(); // Specify the name of the bucket. Example: examplebucket. String bucketName = "examplebucket"; // Specify the region in which the bucket is located. For example, if the bucket is located in the China (Hangzhou) region, set the region to cn-hangzhou. String region = "cn-hangzhou"; // Create an OSSClient instance. // Call the shutdown method to release resources when the OSSClient is no longer in use. ClientBuilderConfiguration clientBuilderConfiguration = new ClientBuilderConfiguration(); clientBuilderConfiguration.setSignatureVersion(SignVersion.V4); OSS ossClient = OSSClientBuilder.create() .endpoint(endpoint) .credentialsProvider(credentialsProvider) .clientConfiguration(clientBuilderConfiguration) .region(region) .build(); try { // Configure the prefix parameter to list all objects and subdirectories in the fun directory. Set the delimiter parameter to a forward slash (/). String prefix = "fun/"; String delimiter = "/"; String nextKeyMarker = null; String nextVersionMarker = null; VersionListing versionListing = null; do { ListVersionsRequest listVersionsRequest = new ListVersionsRequest() .withBucketName(bucketName) .withKeyMarker(nextKeyMarker) .withVersionIdMarker(nextVersionMarker) .withEncodingType(OSSConstants.URL_ENCODING) .withDelimiter(delimiter) .withPrefix(prefix); versionListing = ossClient.listVersions(listVersionsRequest); // Display the version IDs of the objects. for (OSSVersionSummary ossVersion : versionListing.getVersionSummaries()) { System.out.println("key name: " + ossVersion.getKey()); System.out.println("versionid: " + ossVersion.getVersionId()); System.out.println("Is latest: " + ossVersion.isLatest()); System.out.println("Is delete marker: " + ossVersion.isDeleteMarker()); } // Display the names of the subdirectories in the fun directory. for (String commonPrefix : versionListing.getCommonPrefixes()) { System.out.println("commonPrefix: " + commonPrefix); } nextKeyMarker = versionListing.getNextKeyMarker(); nextVersionMarker = versionListing.getNextVersionIdMarker(); } while (versionListing.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(); } } } }Exemplo de resposta
key name: fun/test.jpg versionid: CAEQEhiBgIC48Y7FqBciIDU4NjAzMjczMTY5NDRjYmVhNGY4NTM2YTdjY2Ji**** Is latest: true Is delete marker: false commonPrefix: fun/movie/