存储空间(Bucket)是存储对象(Object)的容器。对象均隶属于存储空间。本文介绍如何判断存储空间是否存在。
注意事项
示例代码
以下代码用于判断存储空间examplebucket是否存在:
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();
// 创建OSSClient实例。
OSS ossClient = new OSSClientBuilder().build(endpoint, credentialsProvider);
try {
// 判断存储空间examplebucket是否存在。如果返回值为true,则存储空间存在,如果返回值为false,则存储空间不存在。
boolean exists = ossClient.doesBucketExist("examplebucket");
System.out.println(exists);
} 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
关于判断存储空间是否存在的完整示例代码,请参见GitHub示例。
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