对象级别保留策略（Object Worm）

import alibabacloud_oss_v2 as oss

credentials_provider = oss.credentials.EnvironmentVariableCredentialsProvider()
cfg = oss.config.load_default()
cfg.credentials_provider = credentials_provider
cfg.region = 'cn-hangzhou'
client = oss.Client(cfg)

# 上传文件并设置保留策略：合规模式，保留至2026年10月11日
result = client.put_object(oss.PutObjectRequest(
    bucket='examplebucket',
    key='exampleobject',
    body='Hello OSS',
    object_worm_mode='COMPLIANCE',
    object_worm_retain_until_date='2026-10-11T00:00:00.000Z',
))
print(f'status code: {result.status_code}')

import com.aliyun.sdk.service.oss2.OSSClient;
import com.aliyun.sdk.service.oss2.credentials.EnvironmentVariableCredentialsProvider;
import com.aliyun.sdk.service.oss2.models.*;
import com.aliyun.sdk.service.oss2.transport.BinaryData;

public class UploadWithRetention {
    public static void main(String[] args) {
        OSSClient client = OSSClient.newBuilder()
            .credentialsProvider(new EnvironmentVariableCredentialsProvider())
            .region("cn-hangzhou")
            .build();

        try {
            // 上传文件并设置保留策略：合规模式，保留至2026年10月11日
            PutObjectResult result = client.putObject(PutObjectRequest.newBuilder()
                .bucket("examplebucket")
                .key("exampleobject")
                .body(BinaryData.fromString("Hello OSS"))
                .header("x-oss-object-worm-mode", "COMPLIANCE")
                .header("x-oss-object-worm-retain-until-date", "2026-10-11T00:00:00.000Z")
                .build());

            System.out.printf("status code: %d%n", result.statusCode());
        } finally {
            client.close();
        }
    }
}

package main

import (
    "context"
    "fmt"
    "strings"

    "github.com/aliyun/alibabacloud-oss-go-sdk-v2/oss"
    "github.com/aliyun/alibabacloud-oss-go-sdk-v2/oss/credentials"
)

func main() {
    cfg := oss.LoadDefaultConfig().
        WithCredentialsProvider(credentials.NewEnvironmentVariableCredentialsProvider()).
        WithRegion("cn-hangzhou")
    client := oss.NewClient(cfg)

    // 上传文件并设置保留策略：合规模式，保留至2026年10月11日
    request := &oss.PutObjectRequest{
        Bucket:                    oss.Ptr("examplebucket"),
        Key:                       oss.Ptr("exampleobject"),
        Body:                      strings.NewReader("Hello OSS"),
        ObjectWormMode:            oss.Ptr("COMPLIANCE"),
        ObjectWormRetainUntilDate: oss.Ptr("2026-10-11T00:00:00.000Z"),
    }
    _, err := client.PutObject(context.TODO(), request)
    if err != nil {
        fmt.Println("Error:", err)
        return
    }
    fmt.Println("Object uploaded with retention successfully")
}