MinIO安装和基本使用

• 1. 简介
• 2. 安装（Docker）
• 3. Java API
• • 3.1 准备工作
  • 3.2 文件上传
  • 3.3 文件下载

MinIO是一款高性能的对象存储容器，适合存储大量的非结构化数据，例如：图片、视频、Word等文件。此外，它还自带非常方便的可视化界面，简直是运维的最爱啊。

• 拉取镜像

docker pull minio/minio

• 创建并运行容器

docker run -it --name minio -p 9000:9000 -p 9001:9001 -d 
-v /usr/local/docker/minio/data:/data 
-v /usr/local/docker/minio/config:/root/.minio 
-e 'MINIO_ROOT_USER=admin' 
-e 'MINIO_ROOT_PASSWORD=admin123' 
minio/minio server /data --console-address ":9001"

• 查看容器日志，启动成功。账号：admin，密码：admin123：
  
• 随后，在浏览器打开9000端口，分别输入上面的账号密码，登录即可
  

这里以Java语言为例，框架以SpringBoot为例，调用Minio API进行相关操作

• 首先，在上面的可视化界面点击左侧 Buckets 菜单，创建一个Bucket，命名为 test01
  
• 然后，进入实例代码
• 使用maven引用minio依赖

	
      io.minio
      minio
      8.3.0
      
        
          com.squareup.okhttp3
          okhttp
        
      
    

    
      com.squareup.okhttp3
      okhttp
      4.8.1
    

• 建一个 MinioUtil 操作类，并实例化 MinioClient 对象

public class MinioUtil {

    private static MinioClient client;

    static {
        try {
            client = MinioClient.builder()
                    .endpoint(new URL("http://192.168.25.129:9000"))
                    .credentials("admin", "admin123")
                    .build();
        } catch (MalformedURLException e) {
            e.printStackTrace();
        }
    }
}

• 在 MinioUtil 补充2个上传方法：上传本地文本、上传MultipartFile

    
    public static ObjectWriteResponse upload(String bucket, String localFileName, String remoteFileName) throws Exception{
        File file = new File(localFileName);
        FileInputStream fileInputStream = new FileInputStream(file);
        return client.putObject(PutObjectArgs.builder()
                .stream(fileInputStream, file.length(), PutObjectArgs.MIN_MULTIPART_SIZE)
                .object(remoteFileName)
                .bucket(bucket)
                .build());
    }

    
    public static ObjectWriteResponse upload(String bucket, MultipartFile file, String remoteFileName) throws Exception {
        return client.putObject(PutObjectArgs.builder()
                .bucket(bucket)
                .stream(file.getInputStream(), file.getSize(), PutObjectArgs.MIN_MULTIPART_SIZE)
                .object(remoteFileName)
                .build());
    }

• 创建 MinioController ，加2个接口分别测试上传：

@RestController
@RequestMapping("/minio")
public class MinioController {

    
    @GetMapping("/uploadLocalFile")
    public String uploadLocalFile() throws Exception{
        ObjectWriteResponse resp = MinioUtil.upload("test01", "E:\测试文件.txt", getDatePath()+"test.txt");
        return "上传成功";
    }
    
    @PostMapping("/uploadMultipartFile")
    public String uploadMultipartFile(MultipartFile file) throws Exception {
        ObjectWriteResponse resp = MinioUtil.upload("test01", file, getDatePath() + file.getOriginalFilename());
        return "上传成功";
    }

    private String getDatePath(){
        LocalDateTime now = LocalDateTime.now();
        return String.format("/%s/%s/%s/", now.getYear(), now.getMonthValue(), now.getDayOfMonth());
    }
}

• 执行完毕后，在 test01 这个 bucket 底下，会创建 /2021/09/27/ 的目录，并且将文件上传到该目录下

• 修改 MinioUtil，增加 2 个下载方法，分别是下载到本地和浏览器打开下载

    
    public static void downLocal(String bucket, String remoteFileName, String localFileName) throws Exception {
        client.downloadObject(DownloadObjectArgs.builder()
                .bucket(bucket)
                .object(remoteFileName)
                .filename(localFileName)
                .build());
    }
    
    
    public static void downResponse(String bucket, String remoteFileName, HttpServletResponse response) throws Exception {
        GetObjectResponse object = client.getObject(GetObjectArgs.builder()
                .bucket(bucket)
                .object(remoteFileName)
                .build());
        response.setHeader("Content-Disposition", "attachment;filename=" + remoteFileName.substring(remoteFileName.lastIndexOf("/")+1));
        response.setContentType("application/force-download");
        response.setCharacterEncoding("UTF-8");
        IOUtils.copy(object, response.getOutputStream());
    }

• 修改 MinioController，增加2个对应的接口

    
    @PostMapping("/downLocal")
    public String downLocal() throws Exception {
        MinioUtil.downLocal("test01", "/2021/9/27/test.txt", "test.txt");
        return "下载成功";
    }
    
    
    @GetMapping("/downResponse")
    public void downResponse(HttpServletResponse response) throws Exception {
        MinioUtil.downResponse("test01", "/2021/9/27/test.txt", response);
    }

分别访问这2个接口就可以测试，这边就不演示了