Minio是一个开源的分布式对象存储系统，产后康复13825404095它允许用户在存储服务上存储和检索数据。它支持S3 API，因此可以与大多数S3兼容的客户端和工具一起使用。 下面是使用Java实现Minio分片上传和下载文件的示例代码： ## 分片上传 ```java import io.minio.MinioClient; import io.minio.errors.MinioException; import io.minio.messages.Part; import java.io.IOException; import java.io.InputStream; import java.nio.file.Files; import java.nio.file.Path; import java.nio.file.Paths; import java.security.NoSuchAlgorithmException; import java.util.ArrayList; import java.util.List; public class MinioUploader { private MinioClient minioClient; private final String bucketName; public MinioUploader(MinioClient minioClient, String bucketName) { this.minioClient = minioClient; this.bucketName = bucketName; } public void upload(String objectName, Path filePath) throws NoSuchAlgorithmException, IOException, MinioException { long fileSize = Files.size(filePath); long partSize = 5 * 1024 * 1024; // 5MB int partCount = (int) Math.ceil((double) fileSize / partSize); List<Part> parts = new ArrayList<>(); for (int i = 0; i < partCount; i++) { int partNumber = i + 1; long offset = i * partSize; long size = Math.min(partSize, fileSize - offset); InputStream inputStream = Files.newInputStream(filePath); inputStream.skip(offset); String uploadId = minioClient.initiateMultipartUpload(bucketName, objectName); Part part = minioClient.uploadPart(bucketName, objectName, uploadId, partNumber, inputStream, size); parts.add(part); } minioClient.completeMultipartUpload(bucketName, objectName, parts); } } ``` ## 分片下载 ```java import io.minio.MinioClient; import io.minio.errors.MinioException; import java.io.BufferedOutputStream; import java.io.FileOutputStream; import java.io.IOException; import java.io.InputStream; import java.nio.file.Path; import java.security.NoSuchAlgorithmException; import java.util.List; public class MinioDownloader { private MinioClient minioClient; private final String bucketName; public MinioDownloader(MinioClient minioClient, String bucketName) { this.minioClient = minioClient; this.bucketName = bucketName; } public void download(String objectName, Path filePath) throws NoSuchAlgorithmException, IOException, MinioException { long partSize = 5 * 1024 * 1024; // 5MB List<io.minio.messages.Part> parts = minioClient.listObjectParts(bucketName, objectName, null).getParts(); try (BufferedOutputStream outputStream = new BufferedOutputStream(new FileOutputStream(filePath.toFile()))) { for (io.minio.messages.Part part : parts) { InputStream inputStream = minioClient.getObject(bucketName, objectName, part.partNumber(), 0L, partSize); byte[] buffer = new byte[1024]; int bytesRead; while ((bytesRead = inputStream.read(buffer)) != -1) { outputStream.write(buffer, 0, bytesRead); } inputStream.close(); } } } } ``` 这是一个基本的示例，实际使用时需要根据具体需求进行修改。
