Lifecycle - Object Storage Service - Alibaba Cloud Documentation Center

Object Storage Service (OSS) allows you to configure lifecycle rules to delete expired objects and parts or convert the storage class of expired objects to Infrequent Access (IA) or Archive to reduce your storage costs. This topic describes how to manage lifecycle rules for buckets.

Usage notes

In this topic, the public endpoint of the China (Hangzhou) region is used. If you want to access OSS by using other Alibaba Cloud services in the same region as OSS, use an internal endpoint For more information about the regions and endpoints supported by OSS, see Regions and endpoints.
In this topic, an OSSClient instance is created by using an OSS endpoint. If you want to create an OSSClient instance by using custom domain names or STS, see Create an OSSClient instance.
The oss:PutBucketLifecycle permission is required to configure a lifecycle rule. The oss:GetBucketLifecycle permission is required to query a lifecycle rule. The oss:DeleteBucketLifecycle permission is required to delete a lifecycle rule. For more information, see Attach a custom policy to a RAM user.

Configure lifecycle rules

Configure a lifecycle rule based on the last modified time to convert the storage class of objects or delete objects

Configure lifecycle rules that match objects by tag and prefix

The following code provides an example on how to configure a lifecycle rule based on the last modified time for a bucket named examplebucket. The lifecycle rule matches objects by prefix and tag. The storage class of the matched objects is converted, or the matched objects are deleted based on the lifecycle rule.

import com.aliyun.oss.ClientException;
import com.aliyun.oss.OSS;
import com.aliyun.oss.OSSClientBuilder;
import com.aliyun.oss.OSSException;
import com.aliyun.oss.common.utils.DateUtil;
import com.aliyun.oss.model.LifecycleRule;
import com.aliyun.oss.model.SetBucketLifecycleRequest;
import com.aliyun.oss.model.StorageClass;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

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";
        // The AccessKey pair of an Alibaba Cloud account has permissions on all API operations. Using these credentials to perform operations in OSS is a high-risk operation. We recommend that you use a RAM user to call API operations or perform routine O&M. To create a RAM user, log on to the RAM console. 
        String accessKeyId = "yourAccessKeyId";
        String accessKeySecret = "yourAccessKeySecret";
        // Specify the name of the bucket. Example: examplebucket. 
        String bucketName = "examplebucket";

        // Create an OSSClient instance. 
        OSS ossClient = new OSSClientBuilder().build(endpoint, accessKeyId, accessKeySecret);

        try {
            // Create a request by using SetBucketLifecycleRequest. 
            SetBucketLifecycleRequest request = new SetBucketLifecycleRequest(bucketName);

            // Specify the ID of the lifecycle rule. 
            String ruleId0 = "rule0";
            // Specify the prefix that you want the lifecycle rule to match. 
            String matchPrefix0 = "A0/";
            // Specify the tag that you want the lifecycle rule to match. 
            Map<String, String> matchTags0 = new HashMap<String, String>();
            // Specify the key and value of the object tag. For example, set the key to owner and the value to John. 
            matchTags0.put("owner", "John");


            String ruleId1 = "rule1";
            String matchPrefix1 = "A1/";
            Map<String, String> matchTags1 = new HashMap<String, String>();
            matchTags1.put("type", "document");

            String ruleId2 = "rule2";
            String matchPrefix2 = "A2/";

            String ruleId3 = "rule3";
            String matchPrefix3 = "A3/";

            String ruleId4 = "rule4";
            String matchPrefix4 = "A4/";

            String ruleId5 = "rule5";
            String matchPrefix5 = "A5/";

            String ruleId6 = "rule6";
            String matchPrefix6 = "A6/";

            // Specify that objects expire three days after they are last modified. 
            LifecycleRule rule = new LifecycleRule(ruleId0, matchPrefix0, LifecycleRule.RuleStatus.Enabled, 3);
            rule.setTags(matchTags0);
            request.AddLifecycleRule(rule);

            // Specify that objects created before the specified date expire. 
            rule = new LifecycleRule(ruleId1, matchPrefix1, LifecycleRule.RuleStatus.Enabled);
            rule.setCreatedBeforeDate(DateUtil.parseIso8601Date("2022-10-12T00:00:00.000Z"));
            rule.setTags(matchTags1);
            request.AddLifecycleRule(rule);

            // Specify that parts expire three days after they are last modified. 
            rule = new LifecycleRule(ruleId2, matchPrefix2, LifecycleRule.RuleStatus.Enabled);
            LifecycleRule.AbortMultipartUpload abortMultipartUpload = new LifecycleRule.AbortMultipartUpload();
            abortMultipartUpload.setExpirationDays(3);
            rule.setAbortMultipartUpload(abortMultipartUpload);
            request.AddLifecycleRule(rule);

            // Specify that the parts created before the specified date expire. 
            rule = new LifecycleRule(ruleId3, matchPrefix3, LifecycleRule.RuleStatus.Enabled);
            abortMultipartUpload = new LifecycleRule.AbortMultipartUpload();
            abortMultipartUpload.setCreatedBeforeDate(DateUtil.parseIso8601Date("2022-10-12T00:00:00.000Z"));
            rule.setAbortMultipartUpload(abortMultipartUpload);
            request.AddLifecycleRule(rule);

            // Specify that the storage class of objects is converted to IA 10 days after they are last modified, and to Archive 30 days after they are last modified. 
            rule = new LifecycleRule(ruleId4, matchPrefix4, LifecycleRule.RuleStatus.Enabled);
            List<LifecycleRule.StorageTransition> storageTransitions = new ArrayList<LifecycleRule.StorageTransition>();
            LifecycleRule.StorageTransition storageTransition = new LifecycleRule.StorageTransition();
            storageTransition.setStorageClass(StorageClass.IA);
            storageTransition.setExpirationDays(10);
            storageTransitions.add(storageTransition);
            storageTransition = new LifecycleRule.StorageTransition();
            storageTransition.setStorageClass(StorageClass.Archive);
            storageTransition.setExpirationDays(30);
            storageTransitions.add(storageTransition);
            rule.setStorageTransition(storageTransitions);
            request.AddLifecycleRule(rule);

            // Specify that the storage class of objects that are last modified before October 12, 2022 is converted to Archive. 
            rule = new LifecycleRule(ruleId5, matchPrefix5, LifecycleRule.RuleStatus.Enabled);
            storageTransitions = new ArrayList<LifecycleRule.StorageTransition>();
            storageTransition = new LifecycleRule.StorageTransition();

            storageTransition.setCreatedBeforeDate(DateUtil.parseIso8601Date("2022-10-12T00:00:00.000Z"));

            storageTransition.setStorageClass(StorageClass.Archive);
            storageTransitions.add(storageTransition);
            rule.setStorageTransition(storageTransitions);
            request.AddLifecycleRule(rule);

            // Specify that rule6 is configured for buckets for which versioning is enabled. 
            rule = new LifecycleRule(ruleId6, matchPrefix6, LifecycleRule.RuleStatus.Enabled);
            // Specify that the storage class of objects is converted to Archive 365 days after the objects are last modified. 
            storageTransitions = new ArrayList<LifecycleRule.StorageTransition>();
            storageTransition = new LifecycleRule.StorageTransition();
            storageTransition.setStorageClass(StorageClass.Archive);
            storageTransition.setExpirationDays(365);
            storageTransitions.add(storageTransition);
            rule.setStorageTransition(storageTransitions);
            // Specify that delete markers are automatically removed when they expire. 
            rule.setExpiredDeleteMarker(true);
            // Specify that the storage class of the previous versions of objects is converted to IA 10 days after the objects are last modified. 
            LifecycleRule.NoncurrentVersionStorageTransition noncurrentVersionStorageTransition =
                    new LifecycleRule.NoncurrentVersionStorageTransition().withNoncurrentDays(10).withStrorageClass(StorageClass.IA);
            // Specify that the storage class of the previous versions of objects is converted to Archive 20 days after the objects are last modified. 
            LifecycleRule.NoncurrentVersionStorageTransition noncurrentVersionStorageTransition2 =
                    new LifecycleRule.NoncurrentVersionStorageTransition().withNoncurrentDays(20).withStrorageClass(StorageClass.Archive);
            // Specify that the previous versions of objects are deleted 30 days after the objects are last modified. 
            LifecycleRule.NoncurrentVersionExpiration noncurrentVersionExpiration = new LifecycleRule.NoncurrentVersionExpiration().withNoncurrentDays(30);
            List<LifecycleRule.NoncurrentVersionStorageTransition> noncurrentVersionStorageTransitions = new ArrayList<LifecycleRule.NoncurrentVersionStorageTransition>();
            noncurrentVersionStorageTransitions.add(noncurrentVersionStorageTransition2);
            rule.setStorageTransition(storageTransitions);
            rule.setNoncurrentVersionExpiration(noncurrentVersionExpiration);
            rule.setNoncurrentVersionStorageTransitions(noncurrentVersionStorageTransitions);
            request.AddLifecycleRule(rule);

            // Initiate a request to configure lifecycle rules. 
            ossClient.setBucketLifecycle(request);

            // Query the lifecycle rules of the bucket. 
            List<LifecycleRule> listRules = ossClient.getBucketLifecycle(bucketName);
            for(LifecycleRule rules : listRules){
                System.out.println("ruleId="+rules.getId()+", matchPrefix="+rules.getPrefix());
            }
        } 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();
            }
        }
    }
}

Configure a lifecycle rule for all objects in a bucket

The following code provides an example on how to configure a lifecycle rule based on the last modified time for a bucket named examplebucket. The lifecycle rule specifies that all objects in the bucket are deleted 365 days after they are last modified.

import com.aliyun.oss.ClientException;
import com.aliyun.oss.OSS;
import com.aliyun.oss.OSSClientBuilder;
import com.aliyun.oss.OSSException;
import com.aliyun.oss.model.LifecycleRule;
import com.aliyun.oss.model.SetBucketLifecycleRequest;
import java.util.List;

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";
        // The AccessKey pair of an Alibaba Cloud account has permissions on all API operations. Using these credentials to perform operations in OSS is a high-risk operation. We recommend that you use a RAM user to call API operations or perform routine O&M. To create a RAM user, log on to the RAM console. 
        String accessKeyId = "yourAccessKeyId";
        String accessKeySecret = "yourAccessKeySecret";
        // Specify the name of the bucket. Example: examplebucket. 
        String bucketName = "examplebucket";

        // Create an OSSClient instance. 
        OSS ossClient = new OSSClientBuilder().build(endpoint, accessKeyId, accessKeySecret);

        try {
            // Create a request by using SetBucketLifecycleRequest. 
            SetBucketLifecycleRequest request = new SetBucketLifecycleRequest(bucketName);

            // Specify the ID of the lifecycle rule. 
            String ruleId0 = "rule0";
            // If the prefix that is used to match objects is left empty, the lifecycle rule takes effect on all objects in the bucket. 
            String matchPrefix0 = null;

            // Specify that objects expire 365 days after they are last modified. 
            LifecycleRule rule = new LifecycleRule(ruleId0, matchPrefix0, LifecycleRule.RuleStatus.Enabled, 365);
            request.AddLifecycleRule(rule);

            // Initiate a request to configure lifecycle rules. 
            ossClient.setBucketLifecycle(request);

            // Query the lifecycle rules of the bucket. 
            List<LifecycleRule> listRules = ossClient.getBucketLifecycle(bucketName);
            for(LifecycleRule rules : listRules){
                System.out.println("ruleId="+rules.getId()+", matchPrefix="+rules.getPrefix()+", expirationDays="+rules.getExpirationDays());
            }
        } 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();
            }
        }
    }
}

Configure a lifecycle rule based on the last modified time to convert the storage class of objects, except for the objects whose names contain specific prefixes or that have specific tags

The following code provides an example on how to configure a lifecycle rule based on the last modified time. The lifecycle rule is used to convert the storage class of objects that meet the following conditions in the examplebucket bucket to IA 30 days after the objects are last modified: The names of the objects do not contain the log prefix and the objects do not have the tag whose key is tag1 and whose value is value1. The Not element in the filter node is used to specify the log prefix, the key1 key, and the value1 value.

import com.aliyun.oss.ClientException;
import com.aliyun.oss.OSS;
import com.aliyun.oss.OSSClientBuilder;
import com.aliyun.oss.OSSException;
import com.aliyun.oss.model.*;
import java.util.ArrayList;
import java.util.List;

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";
        // The AccessKey pair of an Alibaba Cloud account has permissions on all API operations. Using these credentials to perform operations in OSS is a high-risk operation. We recommend that you use a RAM user to call API operations or perform routine O&M. To create a RAM user, log on to the RAM console. 
        String accessKeyId = "yourAccessKeyId";
        String accessKeySecret = "yourAccessKeySecret";
        // Specify the name of the bucket. Example: examplebucket. 
        String bucketName = "examplebucket";

        // Create an OSSClient instance. 
        OSS ossClient = new OSSClientBuilder().build(endpoint, accessKeyId, accessKeySecret);

        try {
            String ruleId = "mtime transition1";
            String matchPrefix = "logs";

            SetBucketLifecycleRequest request = new SetBucketLifecycleRequest(bucketName);

            LifecycleFilter filter = new LifecycleFilter();
            LifecycleNot not = new LifecycleNot();
            Tag tag = new Tag("key1","value1");
            not.setPrefix("logs/not-prefix");
            not.setTag(tag);
            List<LifecycleNot> notList = new ArrayList<LifecycleNot>();
            notList.add(not);
            filter.setNotList(notList);

            List<LifecycleRule.StorageTransition> storageTransitions = new ArrayList<LifecycleRule.StorageTransition>();
            LifecycleRule.StorageTransition storageTransition = new LifecycleRule.StorageTransition();
            storageTransition.setStorageClass(StorageClass.IA);
            storageTransition.setExpirationDays(30);
            storageTransitions.add(storageTransition);

            LifecycleRule rule = new LifecycleRule(ruleId, matchPrefix, LifecycleRule.RuleStatus.Enabled);
            rule.setFilter(filter);
            rule.setStorageTransition(storageTransitions);
            request.AddLifecycleRule(rule);

            VoidResult result = ossClient.setBucketLifecycle(request);

            System.out.println("Returned status code:"+result.getResponse().getStatusCode()+" set lifecycle succeed");
        } 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();
            }
        }
    }
}

Configure a lifecycle rule based on the last modified time to convert the storage class of objects

The following code provides an example on how to configure a lifecycle rule based on the last modified time to convert the storage class of objects in the examplebucket bucket:

import com.aliyun.oss.ClientException;
import com.aliyun.oss.OSS;
import com.aliyun.oss.OSSClientBuilder;
import com.aliyun.oss.OSSException;
import com.aliyun.oss.model.*;
import java.util.ArrayList;
import java.util.List;

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";
        // The AccessKey pair of an Alibaba Cloud account has permissions on all API operations. Using these credentials to perform operations in OSS is a high-risk operation. We recommend that you use a RAM user to call API operations or perform routine O&M. To create a RAM user, log on to the RAM console. 
        String accessKeyId = "yourAccessKeyId";
        String accessKeySecret = "yourAccessKeySecret";
        // Specify the name of the bucket. Example: examplebucket. 
        String bucketName = "examplebucket";

        // Create an OSSClient instance. 
        OSS ossClient = new OSSClientBuilder().build(endpoint, accessKeyId, accessKeySecret);

        try {
            ossClient.putBucketAccessMonitor(bucketName, AccessMonitor.AccessMonitorStatus.Enabled.toString());
            // Create a lifecycle rule and set ID to rule1. Specify that the objects whose names contain the logs prefix and whose size is less than or equal to 64 KB are converted to IA 30 days after the objects are last accessed. In addition, specify that the objects are still stored as IA objects when the objects are accessed again. 
            LifecycleRule lifecycleRule = new LifecycleRule("rule1", "logs", LifecycleRule.RuleStatus.Enabled);
            List<LifecycleRule> lifecycleRuleList = new ArrayList<LifecycleRule>();
            SetBucketLifecycleRequest setBucketLifecycleRequest = new SetBucketLifecycleRequest(bucketName);

            LifecycleRule.StorageTransition storageTransition = new LifecycleRule.StorageTransition();
            storageTransition.setStorageClass(StorageClass.IA);
            storageTransition.setExpirationDays(30);
            storageTransition.setIsAccessTime(true);
            storageTransition.setReturnToStdWhenVisit(false);
            storageTransition.setAllowSmallFile(true);
            List<LifecycleRule.StorageTransition> storageTransitionList = new ArrayList<LifecycleRule.StorageTransition>();
            storageTransitionList.add(storageTransition);
            lifecycleRule.setStorageTransition(storageTransitionList);
            lifecycleRuleList.add(lifecycleRule);
            
            // Create a lifecycle rule and set ID to rule2. Specify that the previous versions of objects whose names contain the dir prefix and whose size is larger than 64 KB are converted to IA 10 days after the objects are last accessed. In addition, specify that the storage class of the objects is converted to Standard when the objects are accessed again. 
            LifecycleRule lifecycleRule2 = new LifecycleRule("rule2", "dir", LifecycleRule.RuleStatus.Enabled);
            LifecycleRule.NoncurrentVersionStorageTransition noncurrentVersionStorageTransition = new LifecycleRule.NoncurrentVersionStorageTransition();
            noncurrentVersionStorageTransition.setStorageClass(StorageClass.IA);
            noncurrentVersionStorageTransition.setNoncurrentDays(10);
            noncurrentVersionStorageTransition.setIsAccessTime(true);
            noncurrentVersionStorageTransition.setReturnToStdWhenVisit(true);
            noncurrentVersionStorageTransition.setAllowSmallFile(false);

            List<LifecycleRule.NoncurrentVersionStorageTransition> noncurrentVersionStorageTransitionList = new ArrayList<LifecycleRule.NoncurrentVersionStorageTransition>();
            noncurrentVersionStorageTransitionList.add(noncurrentVersionStorageTransition);
            lifecycleRule2.setNoncurrentVersionStorageTransitions(noncurrentVersionStorageTransitionList);
            lifecycleRuleList.add(lifecycleRule2);

            setBucketLifecycleRequest.setLifecycleRules(lifecycleRuleList);

            // Configure lifecycle rules. 
            ossClient.setBucketLifecycle(setBucketLifecycleRequest);
        } 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();
            }
        }
    }
}

Query lifecycle rules

The following code provides an example on how to query the lifecycle rules configured for the bucket named examplebucket:

import com.aliyun.oss.ClientException;
import com.aliyun.oss.OSS;
import com.aliyun.oss.OSSClientBuilder;
import com.aliyun.oss.OSSException;
import com.aliyun.oss.model.LifecycleRule;
import java.util.List;

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";
        // The AccessKey pair of an Alibaba Cloud account has permissions on all API operations. Using these credentials to perform operations in OSS is a high-risk operation. We recommend that you use a RAM user to call API operations or perform routine O&M. To create a RAM user, log on to the RAM console. 
        String accessKeyId = "yourAccessKeyId";
        String accessKeySecret = "yourAccessKeySecret";
        // Specify the name of the bucket. Example: examplebucket. 
        String bucketName = "examplebucket";

        // Create an OSSClient instance. 
        OSS ossClient = new OSSClientBuilder().build(endpoint, accessKeyId, accessKeySecret);

        try {
            // Query the lifecycle rules of the bucket. 
            List<LifecycleRule> rules = ossClient.getBucketLifecycle(bucketName);

            // View the lifecycle rules of the bucket. 
            for (LifecycleRule r : rules) {
                System.out.println("================");

                // View the rule ID. 
                System.out.println("rule id: " + r.getId());

                // View the status of the rule. 
                System.out.println("rule status: " + r.getStatus());

                // View the prefix configured in the lifecycle rule. 
                System.out.println("rule prefix: " + r.getPrefix());

                // View the tag configured in the lifecycle rule. 
                if (r.hasTags()) {
                    System.out.println("rule tagging: "+ r.getTags().toString());
                }

                // View the validity period configured in the lifecycle rule. 
                if (r.hasExpirationDays()) {
                    System.out.println("rule expiration days: " + r.getExpirationDays());
                }

                // View the expiration date configured in the lifecycle rule. 
                if (r.hasCreatedBeforeDate()) {
                    System.out.println("rule expiration create before days: " + r.getCreatedBeforeDate());
                }

                // View the rule for expired parts. 
                if(r.hasAbortMultipartUpload()) {
                    if(r.getAbortMultipartUpload().hasExpirationDays()) {
                        System.out.println("rule abort uppart days: " + r.getAbortMultipartUpload().getExpirationDays());
                    }

                    if (r.getAbortMultipartUpload().hasCreatedBeforeDate()) {
                        System.out.println("rule abort uppart create before date: " + r.getAbortMultipartUpload().getCreatedBeforeDate());
                    }
                }

                // View the rule of storage class conversion. 
                if (r.getStorageTransition().size() > 0) {
                    for (LifecycleRule.StorageTransition transition : r.getStorageTransition()) {
                        if (transition.hasExpirationDays()) {
                            System.out.println("rule storage trans days: " + transition.getExpirationDays() +
                                    " trans storage class: " + transition.getStorageClass());
                        }

                        if (transition.hasCreatedBeforeDate()) {
                            System.out.println("rule storage trans before create date: " + transition.getCreatedBeforeDate());
                        }
                        // View the lifecycle rule to check whether lifecycle rules are configured based on the last access time. This configuration applies only to OSS SDK for Java 3.16.0 and later. 
                        System.out.println("StorageTransition IsAccessTime: "+transition.getIsAccessTime());
                        // View the lifecycle rule to check whether the storage class of the object is converted to Standard after the storage class of the object is converted to IA. This configuration applies only to OSS SDK for Java 3.16.0 and later. 
                        System.out.println("StorageTransition ReturnToStdWhenVisit: "+transition.getReturnToStdWhenVisit());
                    }
                }

                // View the lifecycle rule to check whether expired delete markers are automatically deleted. 
                if (r.hasExpiredDeleteMarker()) {
                    System.out.println("rule expired delete marker: " + r.getExpiredDeleteMarker());
                }

                // View the configurations used to convert the storage class of previous versions of the objects. 
                if (r.hasNoncurrentVersionStorageTransitions()) {
                    for (LifecycleRule.NoncurrentVersionStorageTransition transition : r.getNoncurrentVersionStorageTransitions()) {
                        System.out.println("rule noncurrent versions trans days:" + transition.getNoncurrentDays() +
                                " trans storage class: " + transition.getStorageClass());
                        // View the access time of objects.  This configuration applies only to OSS SDK for Java 3.16.0 and later. 
                        System.out.println("NoncurrentVersionStorageTransition IsAccessTime: "+transition.getIsAccessTime());
                        // View the ReturnToStdWhenVisit.  This configuration applies only to OSS SDK for Java 3.16.0 and later. 
                        System.out.println("NoncurrentVersionStorageTransition ReturnToStdWhenVisit: "+transition.getReturnToStdWhenVisit());
                    }
                }

                // View the expiration rule for previous versions of objects. 
                if (r.hasNoncurrentVersionExpiration()) {
                    System.out.println("rule noncurrent versions expiration days:" + r.getNoncurrentVersionExpiration().getNoncurrentDays());
                }
            }
        } 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();
            }
        }
    }
}

Delete lifecycle rules

The following code provides an example on how to delete lifecycle rules configured for the bucket named examplebucket:

import com.aliyun.oss.ClientException;
import com.aliyun.oss.OSS;
import com.aliyun.oss.OSSClientBuilder;
import com.aliyun.oss.OSSException;

public class Demo {

    public static void main(String[] args) throws Exception {
        // In this example, the endpoint of the China (Hangzhou) region is used. Specify the actual endpoint. 
        String endpoint = "https://oss-cn-hangzhou.aliyuncs.com";
        // The AccessKey pair of an Alibaba Cloud account has permissions on all API operations. Using these credentials to perform operations in OSS is a high-risk operation. We recommend that you use a RAM user to call API operations or perform routine O&M. To create a RAM user, log on to the RAM console. 
        String accessKeyId = "yourAccessKeyId";
        String accessKeySecret = "yourAccessKeySecret";
        // Specify the name of the bucket. Example: examplebucket. 
        String bucketName = "examplebucket";

        // Create an OSSClient instance. 
        OSS ossClient = new OSSClientBuilder().build(endpoint, accessKeyId, accessKeySecret);

        try {
            ossClient.deleteBucketLifecycle(bucketName);
        } 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();
            }
        }
    }
}

References

For more information about the complete sample code for lifecycle rules, visit GitHub.
For more information about the API operation that you can call to configure lifecycle rules, see PutBucketLifecycle.
For more information about the API operation that you can call to query lifecycle rules, see GetBucketLifecycle.
For more information about the API operation that you can call to delete lifecycle rules, see DeleteBucketLifecycle.