阿里云文件上传，文件下载工具类（Oss）

package org.springblade.sample.utils;

import com.aliyun.oss.ClientBuilderConfiguration;
import com.aliyun.oss.OSS;
import com.aliyun.oss.OSSClientBuilder;
import com.aliyun.oss.OSSException;
import com.aliyun.oss.common.auth.CredentialsProvider;
import com.aliyun.oss.common.auth.DefaultCredentialProvider;
import com.aliyun.oss.common.comm.SignVersion;
import com.aliyun.oss.model.OSSObject;
import com.aliyun.oss.model.PutObjectRequest;

import java.io.*;
import java.net.URLEncoder;


import lombok.extern.slf4j.Slf4j;
import org.springblade.core.log.exception.ServiceException;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.Configuration;

import javax.servlet.http.HttpServletResponse;


@Slf4j
@Configuration
public class OssUtils {

	@Value("${oss.access_key:''}")
	private String access_key;
	@Value("${oss.secret_key:''}")
	private String secret_key;
	@Value("${oss.endpoint:''}")
	private String endpoint;
	@Value("${oss.bucket:''}")
	private String bucket;
	@Value("${oss.region:''}")
	private String region;

	/**
	 * 上传oss
	 *
	 * @param filePath 本地文件路径
	 * @param ossPath  oss存放路径
	 */
	public void uploadFile(String filePath, String ossPath) {
		OSS ossClient = null;
		File file = new File(filePath);
		try (FileInputStream inputStream = new FileInputStream(file)) {
			// 创建OSSClient实例。
			CredentialsProvider credentialsProvider = new DefaultCredentialProvider(access_key, secret_key);
			ossClient = new OSSClientBuilder().build(endpoint, credentialsProvider);
			// 创建PutObjectRequest请求。
			PutObjectRequest putObjectRequest = new PutObjectRequest(bucket, ossPath, inputStream);
			// 上传文件。
			ossClient.putObject(putObjectRequest);
		} catch (Exception e) {
			log.error("文件上传失败文件路径: {} 错误信息: {}", filePath, e);
			throw new ServiceException(e.getMessage());
		} finally {
			// 关闭OSSClient。
			if (ossClient != null) {
				ossClient.shutdown();
			}
		}
	}

	/**
	 * 流式文件下载（阿里云Oss）
	 *
	 * @param objectName 阿里云文件存储路径
	 * @param response   输出流
	 */
	public void downloadFile(String objectName, HttpServletResponse response) {
		CredentialsProvider credentialsProvider = new DefaultCredentialProvider(access_key, secret_key);

		// 创建OSSClient实例
		ClientBuilderConfiguration clientBuilderConfiguration = new ClientBuilderConfiguration();
		clientBuilderConfiguration.setSignatureVersion(SignVersion.V2);
		OSS ossClient = OSSClientBuilder.create().endpoint(endpoint).credentialsProvider(credentialsProvider).clientConfiguration(clientBuilderConfiguration).region(region).build();
		OSSObject ossObject = ossClient.getObject(bucket, objectName);

		try (InputStream inputStream = ossObject.getObjectContent(); OutputStream os = response.getOutputStream()) {
			
			response.setContentType("application/octet-stream");
			response.setHeader("Content-Disposition", "attachment; filename=\"" + URLEncoder.encode(objectName, "UTF-8") + "\"");

			// 使用缓冲流提高读取性能
			byte[] buffer = new byte[8192]; // 使用更大的缓冲区
			int bytesRead;
			while ((bytesRead = inputStream.read(buffer)) != -1) {
				os.write(buffer, 0, bytesRead);
			}
			os.flush();

			log.info("文件下载成功，文件大小：{} 字节", ossObject.getObjectMetadata().getContentLength());
		} catch (OSSException oe) {
			// 针对OSS异常的详细处理
			log.error("发生OSS异常，可能是请求被OSS拒绝或其他服务端错误。错误信息：{}, 错误代码：{}, 请求ID：{}, 主机ID：{}", oe.getErrorMessage(), oe.getErrorCode(), oe.getRequestId(), oe.getHostId());
			throw new ServiceException("发生OSS异常，可能是请求被OSS拒绝或其他服务端错误");
		} catch (Exception e) {
			// 针对客户端异常的详细处理
			log.error("发生客户端异常，可能是网络问题或内部错误导致与OSS通信失败。错误信息：{}", e.getMessage());
			throw new ServiceException("发生客户端异常，可能是网络问题或内部错误导致与OSS通信失败");
		} finally {
			// 资源清理，确保在 try-with-resources 关闭流之后进行
			if (ossClient != null) {
				ossClient.shutdown();
			}
		}
	}
}