1、创建用户

2、引入依赖

        <dependency>
            <groupId>com.squareup.okhttp3</groupId>
            <artifactId>okhttp</artifactId>
            <version>4.9.0</version>
        </dependency>

        <dependency>
            <groupId>io.minio</groupId>
            <artifactId>minio</artifactId>
            <version>8.4.2</version>
            <exclusions>
                <exclusion>
                    <artifactId>okhttp</artifactId>
                    <groupId>com.squareup.okhttp3</groupId>
                </exclusion>
            </exclusions>
        </dependency>

3、上传文件代码

package com.shenma2005.utils;

import io.minio.BucketExistsArgs;
import io.minio.MakeBucketArgs;
import io.minio.MinioClient;
import io.minio.UploadObjectArgs;
import io.minio.errors.MinioException;

import java.io.IOException;
import java.security.InvalidKeyException;
import java.security.NoSuchAlgorithmException;

public class FileUploader {

    public static void main(String[] args) throws IOException, NoSuchAlgorithmException, InvalidKeyException {
        try {
            // Create a minioClient with the MinIO server playground, its access key and secret key.
            MinioClient minioClient =
                    MinioClient.builder()
                            .endpoint("http://8.142.83.78:9000")
                            .credentials("david", "Ab.123456789")
                            .build();

            // Make 'asiatrip' bucket if not exist.
            boolean found = minioClient.bucketExists(BucketExistsArgs.builder().bucket("public").build());
            if (!found) {
                // Make a new bucket called 'asiatrip'.
                minioClient.makeBucket(MakeBucketArgs.builder().bucket("public").build());
            } else {
                System.out.println("Bucket 'public' already exists.");
            }

            // Upload '/home/user/Photos/asiaphotos.zip' as object name 'asiaphotos-2015.zip' to bucket
            // 'asiatrip'.
            minioClient.uploadObject(
                    UploadObjectArgs.builder()
                            .bucket("public")
                            .object("credentials.json")
                            .filename("D:\\test\\shenma-cms-logo.png")
                            .build());
            System.out.println("'D:\\test\\shenma-cms-logo.png' is successfully uploaded as " + "object 'credentials.json' to bucket 'public'.");
        } catch (MinioException e) {
            System.out.println("Error occurred: " + e);
            System.out.println("HTTP trace: " + e.httpTrace());
        }
    }
}

4、文件下载

package com.shenma2005.utils;

import io.minio.*;
import io.minio.errors.MinioException;

import java.io.IOException;
import java.security.InvalidKeyException;
import java.security.NoSuchAlgorithmException;

public class FileDownLoader {

    public static void main(String[] args) {
        try {
            // Create a minioClient with the MinIO server playground, its access key and secret key.
            MinioClient minioClient =
                    MinioClient.builder()
                            .endpoint("http://8.142.83.78:9000")
                            .credentials("david", "Ab.123456789")
                            .build();

            // Make 'asiatrip' bucket if not exist.
            boolean found = minioClient.bucketExists(BucketExistsArgs.builder().bucket("public").build());
            if (!found) {
                // Make a new bucket called 'asiatrip'.
                minioClient.makeBucket(MakeBucketArgs.builder().bucket("public").build());
            } else {
                System.out.println("Bucket 'public' already exists.");
            }

            //
            // 文件是否存在
            DownloadObjectArgs downloadObjectArgs = DownloadObjectArgs.builder()
                    .bucket("public")
                    .object("shenma-cms-logo.png")
                    .filename("D:\\test\\shenma-cms-logo3.png")
                    .build();

            minioClient.downloadObject(downloadObjectArgs);
            System.out.println("download ok");

        } catch (MinioException e) {
            System.out.println("Error occurred: " + e);
            System.out.println("HTTP trace: " + e.httpTrace());
        } catch (NoSuchAlgorithmException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        } catch (InvalidKeyException e) {
            e.printStackTrace();
        }
    }

}