如何使用java sdk在框中创建共享链接

import com.qcloud.cos.COSClient;
import com.qcloud.cos.ClientConfig;
import com.qcloud.cos.auth.BasicCOSCredentials;
import com.qcloud.cos.auth.COSCredentials;
import com.qcloud.cos.model.GeneratePresignedUrlRequest;
import com.qcloud.cos.model.GeneratePresignedUrlResult;
import com.qcloud.cos.model.ObjectMetadata;
import com.qcloud.cos.model.PutObjectRequest;
import com.qcloud.cos.model.PutObjectResult;
import com.qcloud.cos.region.Region;

// 配置腾讯云对象存储的访问密钥和区域
String secretId = "your-secret-id";
String secretKey = "your-secret-key";
COSCredentials credentials = new BasicCOSCredentials(secretId, secretKey);
ClientConfig clientConfig = new ClientConfig(new Region("your-region"));

// 创建COS客户端实例
COSClient cosClient = new COSClient(credentials, clientConfig);

// 设置桶的名称
String bucketName = "your-bucket-name";

// 创建桶
cosClient.createBucket(bucketName);

// 设置桶的访问权限为公共读
cosClient.setBucketAcl(bucketName, CannedAccessControlList.PublicRead);

// 设置上传文件的路径和文件名
String filePath = "your-file-path";
String key = "your-file-name";

// 创建上传文件的请求
PutObjectRequest putObjectRequest = new PutObjectRequest(bucketName, key, new File(filePath));

// 上传文件到桶中
PutObjectResult putObjectResult = cosClient.putObject(putObjectRequest);

// 生成共享链接
GeneratePresignedUrlRequest generatePresignedUrlRequest = new GeneratePresignedUrlRequest(bucketName, key);
GeneratePresignedUrlResult generatePresignedUrlResult = cosClient.generatePresignedUrl(generatePresignedUrlRequest);

// 获取共享链接
String sharedLink = generatePresignedUrlResult.toString();

// 关闭COS客户端实例
cosClient.shutdown();