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获取桶元数据（Android SDK）

最近更新时间：2024.02.04 18:31:00

首次发布时间：2022.12.01 16:31:39

存储桶是存储对象的容器。您可以通过 headBucket 接口可以判断桶是否存在，以及获取桶的元数据。

注意事项

获取桶元数据之前，您必须具有 tos:HeadBucket 权限。具体操作，请参见权限配置指南。
若桶不存在则该接口会返回 404，也常用于判断桶是否存在。

示例代码

如下代码展示如何获取桶信息。

import android.os.Bundle;
import android.util.Log;

import androidx.appcompat.app.AppCompatActivity;

import com.volcengine.tos.TOSV2;
import com.volcengine.tos.TOSV2ClientBuilder;
import com.volcengine.tos.TosException;
import com.volcengine.tos.model.bucket.HeadBucketV2Input;
import com.volcengine.tos.model.bucket.HeadBucketV2Output;

public class HeadBucketExample extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        String endpoint = "your endpoint";
        String region = "your region";
        String accessKey = "your access key";
        String secretKey = "your secret key";
        String securityToken = "your security token";

        String bucketName = "your bucket name";
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_display_message);
        TOSV2 tos = new TOSV2ClientBuilder().build(region, endpoint, accessKey, secretKey, securityToken);

        Thread tosThread = new Thread(new Runnable() {
            @Override
            public void run() {
                try{
                    HeadBucketV2Input input = new HeadBucketV2Input().setBucket(bucketName);
                    HeadBucketV2Output output = tos.headBucket(input);
                    Log.i("headBucket", "bucket's region is " + output.getRegion());
                    Log.i("headBucket", "bucket's storage class is " + output.getStorageClass());
                } catch (TosException e) {
                    if (e.getStatusCode() == 404) {
                        Log.e("TosException", "headBucket failed, the bucket is not found.");
                    } else {
                        Log.e("TosException", "headBucket failed.");
                    }
                    e.printStackTrace();
                }
            }
        });

        tosThread.start();
    }
}

对象存储

获取桶元数据（Android SDK）

注意事项

示例代码

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