java将一个文件流使用多线程上传到minio

以下是Java代码示例，演示如何使用Minio Java客户端库实现将一个文件流使用多线程上传到Minio：

import io.minio.MinioClient;
import io.minio.errors.MinioException;
import java.io.FileInputStream;
import java.io.InputStream;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.concurrent.TimeUnit;

public class MultiThreadedStreamUploader {

    private static final String MINIO_ENDPOINT = "https://example.com";
    private static final String ACCESS_KEY = "access_key_here";
    private static final String SECRET_KEY = "secret_key_here";
    private static final String BUCKET_NAME = "bucket_name_here";
    private static final int BUFFER_SIZE = 1024 * 1024; // 1 MB

    public static void main(String[] args) throws Exception {
        // Initialize Minio client
        MinioClient minioClient = new MinioClient(MINIO_ENDPOINT, ACCESS_KEY, SECRET_KEY);

        // Create a new bucket if it doesn't already exist
        if (!minioClient.bucketExists(BUCKET_NAME)) {
            minioClient.makeBucket(BUCKET_NAME);
        }

        // Upload a file stream using multiple threads
        ExecutorService executorService = Executors.newFixedThreadPool(5);
        InputStream inputStream = new FileInputStream("/path/to/local/file");
        long fileSize = inputStream.available();
        for (int i = 0; i < 5; i++) {
            final int threadNumber = i;
            executorService.submit(() -> {
                try {
                    long start = threadNumber * fileSize / 5;
                    long end = (threadNumber + 1) * fileSize / 5 - 1;
                    byte[] buffer = new byte[BUFFER_SIZE];
                    inputStream.skip(start);
                    long bytesRead = 0;
                    while (bytesRead < end - start + 1) {
                        long bytesToRead = Math.min(buffer.length, end - start + 1 - bytesRead);
                        int n = inputStream.read(buffer, 0, (int) bytesToRead);
                        if (n == -1) {
                            break;
                        }
                        bytesRead += n;
                        minioClient.putObject(BUCKET_NAME, "file", new ByteArrayInputStream(buffer, 0, n), null);
                    }
                    System.out.println("Thread " + threadNumber + " finished uploading");
                } catch (MinioException | IOException e) {
                    e.printStackTrace();
                }
            });
        }

        // Shutdown the executor service
        executorService.shutdown();
        executorService.awaitTermination(Long.MAX_VALUE, TimeUnit.NANOSECONDS);

        // List all objects in the bucket
        Iterable<Item> objects = minioClient.listObjects(BUCKET_NAME);
        for (Item object : objects) {
            System.out.println(object.objectName());
        }
    }
}

在此示例中，我们使用Minio Java客户端库初始化了一个Minio客户端，并使用`makeBucket`方法创建了一个新的存储桶。然后，我们使用多个线程上传了一个文件流。使用`putObject`方法上传文件。在此示例中，我们使用5个线程并行上传文件流。最后，我们使用`listObjects`方法列出了桶中的所有对象。