解凍歸檔、冷歸檔以及深度冷歸檔Object - Object Storage Service

如果未開啟歸檔直讀，歸檔類型的Object需要解凍後才能讀取。冷歸檔、深度冷歸檔不支援開啟直讀，冷歸檔、深度冷歸檔類型的Object需要解凍後才能讀取。歸檔類型Object完成解凍通常需要數分鐘。冷歸檔類型Object完成解凍通常需要數小時。深度冷歸檔類型Object完成解凍通常需要12～48小時。解凍時間請以實際為準。本文介紹如何解凍歸檔、冷歸檔、深度冷歸檔類型的Object。

注意事項

僅歸檔、冷歸檔以及深度冷歸檔類型的Object支援調用RestoreObject方法。
本文以華東1（杭州）外網Endpoint為例。如果您希望通過與OSS同地區的其他阿里雲產品訪問OSS，請使用內網Endpoint。關於OSS支援的Region與Endpoint的對應關係，請參見OSS訪問網域名稱、資料中心、開放連接埠。
本文以從環境變數讀取存取憑證為例。如何配置訪問憑證，請參見Java配置訪問憑證。
本文以OSS網域名稱建立OSSClient為例。如果您希望通過自訂網域名、STS等方式建立OSSClient，請參見建立OSSClient。
要解凍檔案，您必須有oss:RestoreObject許可權。具體操作，請參見為RAM使用者授權自訂的權限原則。

解凍歸檔Object

以下代碼用於解凍歸檔Object：

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 {
        // Endpoint以華東1（杭州）為例，其它Region請按實際情況填寫。
        String endpoint = "https://oss-cn-hangzhou.aliyuncs.com";
        // 從環境變數中擷取訪問憑證。運行本程式碼範例之前，請確保已設定環境變數OSS_ACCESS_KEY_ID和OSS_ACCESS_KEY_SECRET。
        EnvironmentVariableCredentialsProvider credentialsProvider = CredentialsProviderFactory.newEnvironmentVariableCredentialsProvider();
        // 填寫Bucket名稱，例如examplebucket。
        String bucketName = "examplebucket";
        // 填寫不包含Bucket名稱在內的歸檔類型Object的完整路徑。
        String objectName = "exampledir/object";
        // 填寫Bucket所在地區。以華東1（杭州）為例，Region填寫為cn-hangzhou。
        String region = "cn-hangzhou";

        // 建立OSSClient執行個體。
        ClientBuilderConfiguration clientBuilderConfiguration = new ClientBuilderConfiguration();
        clientBuilderConfiguration.setSignatureVersion(SignVersion.V4);        
        OSS ossClient = OSSClientBuilder.create()
        .endpoint(endpoint)
        .credentialsProvider(credentialsProvider)
        .clientConfiguration(clientBuilderConfiguration)
        .region(region)               
        .build();

        try {
            ObjectMetadata objectMetadata = ossClient.getObjectMetadata(bucketName, objectName);

            // 校正Object是否為歸檔類型Object。
            StorageClass storageClass = objectMetadata.getObjectStorageClass();
            if (storageClass == StorageClass.Archive) {
                // 解凍Object。
                ossClient.restoreObject(bucketName, objectName);

                // 等待解凍完成。
                do {
                    Thread.sleep(1000);
                    objectMetadata = ossClient.getObjectMetadata(bucketName, objectName);
                } while (!objectMetadata.isRestoreCompleted());
            }

            // 擷取解凍Object。
            OSSObject ossObject = ossClient.getObject(bucketName, objectName);
            ossObject.getObjectContent().close();
        } 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();
            }
        }
    }
}

解凍冷歸檔Object

以下代碼用於解凍冷歸檔Object：

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 {
        // Endpoint以華東1（杭州）為例，其它Region請按實際情況填寫。
        String endpoint = "https://oss-cn-hangzhou.aliyuncs.com";
        // 從環境變數中擷取訪問憑證。運行本程式碼範例之前，請確保已設定環境變數OSS_ACCESS_KEY_ID和OSS_ACCESS_KEY_SECRET。
        EnvironmentVariableCredentialsProvider credentialsProvider = CredentialsProviderFactory.newEnvironmentVariableCredentialsProvider();
        // 填寫Bucket名稱，例如examplebucket。
        String bucketName = "examplebucket";
        // 填寫不包含Bucket名稱在內的冷歸檔類型Object的完整路徑。
        String objectName = "exampledir/object";
        // 填寫Bucket所在地區。以華東1（杭州）為例，Region填寫為cn-hangzhou。
        String region = "cn-hangzhou";

        // 建立OSSClient執行個體。
        ClientBuilderConfiguration clientBuilderConfiguration = new ClientBuilderConfiguration();
        clientBuilderConfiguration.setSignatureVersion(SignVersion.V4);        
        OSS ossClient = OSSClientBuilder.create()
        .endpoint(endpoint)
        .credentialsProvider(credentialsProvider)
        .clientConfiguration(clientBuilderConfiguration)
        .region(region)               
        .build();

        try {            
            // 設定解凍冷歸檔Object的優先順序。
            // RestoreTier.RESTORE_TIER_EXPEDITED 表示1小時內完成解凍。
            // RestoreTier.RESTORE_TIER_STANDARD 表示2~5小時內完成解凍。
            // RestoreTier.RESTORE_TIER_BULK 表示5~12小時內完成解凍。
            RestoreJobParameters jobParameters = new RestoreJobParameters(RestoreTier.RESTORE_TIER_BULK);

            // 配置解凍參數，以設定5小時內解凍完成，解凍狀態保持2天為例。
            // 第一個參數表示保持解凍狀態的天數，預設是1天，此參數適用於解凍Archive（歸檔）與ColdArchive（冷歸檔）類型Object。
            // 第二個參數jobParameters表示解凍優先順序，只適用於解凍ColdArchive類型Object。
            RestoreConfiguration configuration = new RestoreConfiguration(2, jobParameters);

            // 發起解凍請求。
            ossClient.restoreObject(bucketName, objectName, configuration);
        } 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();
            }
        }
    }
}

解凍深度冷歸檔Object

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 {
        // Endpoint以華東1（杭州）為例，其它Region請按實際情況填寫。
        String endpoint = "https://oss-cn-hangzhou.aliyuncs.com";
        // 從環境變數中擷取訪問憑證。運行本程式碼範例之前，請確保已設定環境變數OSS_ACCESS_KEY_ID和OSS_ACCESS_KEY_SECRET。
        EnvironmentVariableCredentialsProvider credentialsProvider = CredentialsProviderFactory.newEnvironmentVariableCredentialsProvider();
        // 填寫Bucket名稱，例如examplebucket。
        String bucketName = "examplebucket";
        // 填寫不包含Bucket名稱在內的深度冷歸檔類型Object的完整路徑。
        String objectName = "exampledir/object";
        // 填寫Bucket所在地區。以華東1（杭州）為例，Region填寫為cn-hangzhou。
        String region = "cn-hangzhou";

        // 建立OSSClient執行個體。
        ClientBuilderConfiguration clientBuilderConfiguration = new ClientBuilderConfiguration();
        clientBuilderConfiguration.setSignatureVersion(SignVersion.V4);        
        OSS ossClient = OSSClientBuilder.create()
        .endpoint(endpoint)
        .credentialsProvider(credentialsProvider)
        .clientConfiguration(clientBuilderConfiguration)
        .region(region)               
        .build();

        try {          
            // 配置解凍優先順序。本程式碼範例以RESTORE_TIER_STANDARD為例。
            // RestoreTier.RESTORE_TIER_EXPEDITED: 12個小時之內解凍完成。            
            // RestoreTier.RESTORE_TIER_STANDARD: 48小時之內解凍完成。
            RestoreJobParameters jobParameters = new RestoreJobParameters(RestoreTier.RESTORE_TIER_STANDARD);

            // 配置解凍狀態期間，預設為1天。本程式碼範例以解凍狀態期間為2天為例。
            RestoreConfiguration configuration = new RestoreConfiguration(2, jobParameters);

            // 發起解凍請求。
            ossClient.restoreObject(bucketName, objectName, configuration);
        } 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();
            }
        }
    }
}

Object Storage Service：Java解凍檔案

注意事項

解凍歸檔Object

解凍冷歸檔Object

解凍深度冷歸檔Object

相關文檔