本文介绍如何重命名文件(Object)。
注意事项
本文以华东1(杭州)外网Endpoint为例。如果您希望通过与OSS同地域的其他阿里云产品访问OSS,请使用内网Endpoint。关于OSS支持的Region与Endpoint的对应关系,请参见OSS访问域名、数据中心、开放端口。
本文以从环境变量读取访问凭证为例。如何配置访问凭证,请参见Java配置访问凭证。
本文以OSS域名新建OSSClient为例。如果您希望通过自定义域名、STS等方式新建OSSClient,请参见新建OSSClient。
在Bucket开启分层命名空间的情况下,OSS支持直接调用Rename接口对Object进行重命名。
关于存储空间开启分层命名空间的具体操作,请参见创建存储空间。
在Bucket未开启分层命名空间的情况下,OSS不支持直接对Object进行重命名。如果您需要在同一个Bucket内对Object进行重命名,您可以通过CopyObject接口将源Object拷贝至目标Object,然后通过DeleteObject接口删除源Object。
示例代码
以下代码用于将examplebucket中的srcobject.txt文件重命名为destobject.txt。
重命名示例(Bucket已开启分层命名空间)
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.RenameObjectRequest; public class Demo { public static void main(String[] args) throws Exception { // Endpoint以华东1(杭州)为例,其它Region请按实际情况填写。 String endpoint = "https://oss-cn-hangzhou.aliyuncs.com"; // 从环境变量中获取访问凭证。运行本代码示例之前,请确保已设置环境变量OSS_ACCESS_KEY_ID和OSS_ACCESS_KEY_SECRET。 EnvironmentVariableCredentialsProvider credentialsProvider = CredentialsProviderFactory.newEnvironmentVariableCredentialsProvider(); // 填写Bucket名称。 String bucketName = "examplebucket"; // 填写源Object的完整路径,完整路径中不能包含Bucket名称。 String sourceObject = "srcobject.txt"; // 填写与源Object处于同一Bucket中的目标Object绝对路径。Object绝对路径中不能包含Bucket名称。 String destinationObject = "destobject.txt"; // 填写Bucket所在地域。以华东1(杭州)为例,Region填写为cn-hangzhou。 String region = "cn-hangzhou"; // 创建OSSClient实例。 ClientBuilderConfiguration clientBuilderConfiguration = new ClientBuilderConfiguration(); clientBuilderConfiguration.setSignatureVersion(SignVersion.V4); OSS ossClient = OSSClientBuilder.create() .endpoint(endpoint) .credentialsProvider(credentialsProvider) .clientConfiguration(clientBuilderConfiguration) .region(region) .build(); try { // 将存储空间中的源Object绝对路径重命名为目标Object绝对路径。 RenameObjectRequest renameObjectRequest = new RenameObjectRequest(bucketName, sourceObject, destinationObject); ossClient.renameObject(renameObjectRequest); } 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(); } } } }
重命名示例(Bucket未开启分层命名空间)
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; public class Demo { public static void main(String[] args) throws Exception { // Endpoint以华东1(杭州)为例,其它Region请按实际情况填写。 String endpoint = "https://oss-cn-hangzhou.aliyuncs.com"; // 从环境变量中获取访问凭证。运行本代码示例之前,请确保已设置环境变量OSS_ACCESS_KEY_ID和OSS_ACCESS_KEY_SECRET。 EnvironmentVariableCredentialsProvider credentialsProvider = CredentialsProviderFactory.newEnvironmentVariableCredentialsProvider(); // 填写Bucket名称。 String bucketName = "examplebucket"; // 填写源Object的完整路径,完整路径中不能包含Bucket名称。 String sourceKey = "srcobject.txt"; // 填写目标Object的完整路径。Object完整路径中不能包含Bucket名称。 String destinationKey = "destobject.txt"; // 填写Bucket所在地域。以华东1(杭州)为例,Region填写为cn-hangzhou。 String region = "cn-hangzhou"; // 创建OSSClient实例。 ClientBuilderConfiguration clientBuilderConfiguration = new ClientBuilderConfiguration(); clientBuilderConfiguration.setSignatureVersion(SignVersion.V4); OSS ossClient = OSSClientBuilder.create() .endpoint(endpoint) .credentialsProvider(credentialsProvider) .clientConfiguration(clientBuilderConfiguration) .region(region) .build(); try { // 将examplebucket下的srcobject.txt拷贝至同一Bucket下的destobject.txt。 ossClient.copyObject(bucketName, sourceKey, bucketName, destinationKey); // 删除srcobject.txt。 ossClient.deleteObject(bucketName, sourceKey); } 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(); } } } }
说明OSS也不支持直接对目录进行重命名。如果需要重命名目录,您可以参考以上示例对该目录下的子目录和Object逐个进行重命名操作。
相关文档
关于重命名文件涉及的API接口说明,请分别参见CopyObject和DeleteObject。
关于重命名的API接口说明,请参见Rename。