存储空间(Bucket)是存储对象(Object)的容器。对象都隶属于存储空间。本文介绍如何获取存储空间所在的地域。
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。
要获取存储空间的地域,您必须具有
oss:GetBucketLocation
权限。具体操作,请参见为RAM用户授权自定义的权限策略。
示例代码
以下代码用于获取存储空间所在的地域(称为Region或Location):
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 {
// 填写OSS支持的任意Region对应的Endpoint,例如https://oss-cn-hangzhou.aliyuncs.com。
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,例如examplebucket。
String bucketName = "examplebucket";
// 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 {
String location = ossClient.getBucketLocation(bucketName);
System.out.println(location);
} 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();
}
}
}
}
相关文档
关于获取存储空间所在地域的完整示例代码,请参见GitHub示例。
关于获取存储空间所在地域的API接口说明,请参见GetBucketLocation。