搭建文件服务器 MinIO

minio官方文档
我选择的是docker部署

docker pull minio/minio

docker run \
  -p 9000:9000 \
  -p 9001:9001 \
  --name minio1 \
  -v ~/minio/data:/data \
  -e "MINIO_ROOT_USER=username" \
  -e "MINIO_ROOT_PASSWORD=password" \
  -d \
  quay.io/minio/minio server /data --console-address ":9001"

访问http://101.42.135.107:9001/ 进入控制台界面 ( 如果是云服务器记得打开9001端口)

创建名为hms的桶

然后上传一个图片

设置访问规则：

添加只读属性，前缀为 “*”,这样就可以浏览器访问了

访问：http://服务器ip:9000/桶名/文件名

最开始用的8.3.7， 和我的jar包冲突了，又换成8.2.1

<dependency>
   <groupId>io.minio</groupId>
   <artifactId>minio</artifactId>
   <version>8.2.1</version>
</dependency>

server:
  port: 9201
spring:
  application:
    name: file
  datasource:
    username: root
    password: 18170021
    url: jdbc:mysql://localhost:3306/db_hms_file?useUnicode=true&characterEncoding=utf8&serverTimezone=Asia/Shanghai
    driver-class-name: com.mysql.cj.jdbc.Driver
  cloud:
    nacos:
      server-addr: localhost:8848
  # 配置文件大小限制
  servlet:
    multipart:
      max-file-size: 100MB
      max-request-size: 100MB
minio:
  # minio配置是自定义的配置，注意：一定加http://
  endpoint: http://localhost:9000   
  accessKey: root
  secretKey: root18170021
  bucketName: hms
mybatis-plus:
  configuration:
    log-impl: org.apache.ibatis.logging.stdout.StdOutImpl

@Data
@Configuration
@ConfigurationProperties(prefix = "minio")
public class MinioClientConfig {

    private String endpoint;
    private String accessKey;
    private String secretKey;

    @Bean
    public MinioClient minioClient()  {
        MinioClient minioClient = MinioClient.builder()
                .endpoint(endpoint)
                .credentials(accessKey, secretKey)
                .build();
        return minioClient;
    }
}

不要被吓跑哦，我只用到其中的上传下载删除三个方法,不过以后可能会用到就都copy过来了

@Component
public class MinioUtil {
    @Autowired
    private MinioClient minioClient;

    /**
     * 查看存储bucket是否存在
     * @return boolean
     */
    public Boolean bucketExists(String bucketName) {
        Boolean found;
        try {
            found = minioClient.bucketExists(BucketExistsArgs.builder().bucket(bucketName).build());
        } catch (Exception e) {
            return false;
        }
        return found;
    }

    /**
     * 创建存储bucket
     * @return Boolean
     */
    public Boolean makeBucket(String bucketName) {
        try {
            minioClient.makeBucket(MakeBucketArgs.builder()
                    .bucket(bucketName)
                    .build());
        } catch (Exception e) {
            e.printStackTrace();
            return false;
        }
        return true;
    }

    /**
     * 删除存储bucket
     * @return Boolean
     */
    public Boolean removeBucket(String bucketName) {
        try {
            minioClient.removeBucket(RemoveBucketArgs.builder()
                    .bucket(bucketName)
                    .build());
        } catch (Exception e) {
            e.printStackTrace();
            return false;
        }
        return true;
    }

    /**
     * 获取全部bucket
     */
    public List<Bucket> getAllBuckets() {
        try {
            return minioClient.listBuckets();
        } catch (Exception e) {
            e.printStackTrace();
        }
        return null;
    }

    /**
     * 文件上传
     * @param file 文件
     * @return Boolean
     */
    public Boolean upload(String bucketName, String fileName, MultipartFile file, InputStream inputStream) {
        try {
            PutObjectArgs objectArgs = PutObjectArgs.builder().bucket(bucketName).object(fileName)
                    .stream(inputStream,file.getSize(),-1).contentType(file.getContentType()).build();
            //文件名称相同会覆盖
            minioClient.putObject(objectArgs);
        } catch (Exception e) {
            e.printStackTrace();
            return false;
        }
        return true;
    }

    /**
     * 预览图片
     * @param fileName
     * @return
     */
    public String preview(String fileName,String bucketName){
        // 查看文件地址
        GetPresignedObjectUrlArgs build = GetPresignedObjectUrlArgs
                .builder().bucket(bucketName)
                .object(fileName)
                .method(Method.GET).build();
        try {
            String url = minioClient.getPresignedObjectUrl(build);
            return url;
        } catch (Exception e) {
            e.printStackTrace();
        }
        return null;
    }

    /**
     * 文件下载
     * @param fileName 文件名称
     * @param res response
     * @return Boolean
     */
    public void download(String fileName,String bucketName, HttpServletResponse res) {
        GetObjectArgs objectArgs = GetObjectArgs.builder().bucket(bucketName)
                .object(fileName).build();
        try (GetObjectResponse response = minioClient.getObject(objectArgs)){
            byte[] buf = new byte[1024];
            int len;
            try (FastByteArrayOutputStream os = new FastByteArrayOutputStream()){
                while ((len=response.read(buf))!=-1){
                    os.write(buf,0,len);
                }
                os.flush();
                byte[] bytes = os.toByteArray();
                res.setCharacterEncoding("utf-8");
                //设置强制下载不打开
                //res.setContentType("application/force-download");
                res.addHeader("Content-Disposition", "attachment;fileName=" + fileName);
                try (ServletOutputStream stream = res.getOutputStream()){
                    stream.write(bytes);
                    stream.flush();
                }
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    /**
     * 查看文件对象
     * @return 存储bucket内文件对象信息
     */
    public List<Item> listObjects(String bucketName) {
        Iterable<Result<Item>> results = minioClient.listObjects(
                ListObjectsArgs.builder().bucket(bucketName).build());
        List<Item> items = new ArrayList<>();
        try {
            for (Result<Item> result : results) {
                items.add(result.get());
            }
        } catch (Exception e) {
            e.printStackTrace();
            return null;
        }
        return items;
    }

    /**
     * 删除
     * @param fileName
     * @return
     * @throws Exception
     */
    public boolean remove(String fileName,String bucketName){
        try {
            minioClient.removeObject( RemoveObjectArgs.builder().bucket(bucketName).object(fileName).build());
        }catch (Exception e){
            return false;
        }
        return true;
    }

    /**
     * 批量删除文件对象（没测试）
     * @param objects 对象名称集合
     */
    public Iterable<Result<DeleteError>> removeObjects(List<String> objects, String bucketName) {
        List<DeleteObject> dos = objects.stream().map(e -> new DeleteObject(e)).collect(Collectors.toList());
        Iterable<Result<DeleteError>> results = minioClient.removeObjects(RemoveObjectsArgs.builder().bucket(bucketName).objects(dos).build());
        return results;
    }
}

@RestController
@RequestMapping("file")
public class FileController {
    private static final Logger log = LogManager.getLogger();

    @Autowired
    private FileItemServiceImpl fileItemService;

    @PostMapping("upload")
    public Result upload(@Valid @NotNull @RequestParam(value = "file") MultipartFile file, @Valid @NotNull Integer type) {
        Result result;
        try {
            FileItemVO fileItemVO = fileItemService.uploadFile(file, type);
            result = Result.success("文件上传成功!", fileItemVO);
        } catch (BcException e) {
            result = Result.error(e.getCode(), e.getMessage());
            log.error(e.getMessage());
        }
        return result;
    }

    @GetMapping("download")
    public void download(HttpServletResponse response,
                         @Valid @RequestParam @NotBlank(message = "fileId不能为空") Integer fileId) {
        try {
            fileItemService.downloadFile(fileId, response);
        } catch (BcException e) {
            log.error(e.getMessage());
        }
    }

    @GetMapping("delete")
    public Result<String> delete(@Valid @RequestParam @NotBlank(message = "fileId不能为空") Long fileId) {
        Result result;
        try {
            fileItemService.deleteFile(fileId);
            result = Result.success("删除附件成功!", fileId);
        } catch (BcException e) {
            result = Result.error(e.getCode(), e.getMessage());
        }
        return result;
    }
}

service

public interface FileItemService {
    /**
     * 上传文件到服务器中
     * @param file
     * @param type
     * @return
     */
    FileItemVO uploadFile(MultipartFile file, Integer type);

    /**
     * 下载文件
     * @param fileId
     * @param response
     */
    void downloadFile(Integer fileId, HttpServletResponse response);

    /**
     * 删除文件
     * @param fileId
     */
    void deleteFile(Long fileId);
}

serviceImpl

@Service
public class FileItemServiceImpl implements FileItemService {
    @Resource
    private MinioUtil minioUtil;

    @Value("${minio.bucketName}")
    private String bucketName;

    @Value("${minio.endpoint}")
    private String endpoint;

    @Autowired
    private FileMapper fileMapper;

    private String[] fileFolders = new String[]{"doctorPhotos/", "report", "otherImage/"};

    @Override
    @Transactional(rollbackFor = Exception.class)
    public FileItemVO uploadFile(MultipartFile file, Integer type) {
        FileItemVO fileItemVO = null;
        try {
            String fileName = file.getOriginalFilename();
            String ext = fileName.substring(fileName.lastIndexOf("."));
            String newFileName = fileFolders[type] + UUID.randomUUID().toString().replaceAll("-", "") + ext;
            InputStream inputStream = file.getInputStream();
            Boolean flag = minioUtil.upload(bucketName, newFileName,file, inputStream);
            if(!flag) {
                throw new BcException(ErrorCode.file_upload_fail.getCode(), "文件上传失败");
            }
            String url = getUrl(newFileName);
            fileItemVO = FileItemVO.builder()
                    .newFileName(newFileName)
                    .fileName(fileName)
                    .ext(ext)
                    .url(url)
                    .build();
            FileEntity fileEntity = new FileEntity();
            BeanUtils.copyProperties(fileItemVO, fileEntity);
            fileEntity.setType(type);
            fileMapper.insert(fileEntity);
            fileItemVO.setFileId(fileEntity.getId());
        } catch (Exception e) {
            throw new BcException(ErrorCode.file_upload_fail.getCode(), "文件上传失败");
        }
        return fileItemVO;
    }

    @Transactional(readOnly = true)
    @Override
    public void downloadFile(Integer fileId, HttpServletResponse response) {
        FileEntity fileEntity = fileMapper.selectById(fileId);
        if(ObjectUtils.isEmpty(fileEntity)) {
            throw new BcException(ErrorCode.file_not_exit.getCode(), "文件不存在");
        }
        try {
            minioUtil.download(fileEntity.getNewFileName(), bucketName, response);
        } catch (Exception e) {
            throw new BcException(ErrorCode.download_id_exception.getCode(), "文件下载失败");
        }
    }

    @Transactional(rollbackFor = Exception.class)
    @Override
    public void deleteFile(Long fileId) {
        FileEntity fileEntity = fileMapper.selectById(fileId);
        if(ObjectUtils.isEmpty(fileEntity)) {
            throw new BcException(ErrorCode.file_not_exit.getCode(), "文件不存在");
        }
        try {
            minioUtil.remove(fileEntity.getNewFileName(), bucketName);
            fileMapper.deleteById(fileId);
        } catch (Exception e) {
            throw new BcException(ErrorCode.download_id_exception.getCode(), "文件删除失败");
        }
    }

    private String getUrl(String newFileName) {
        return endpoint
                + "/"
                + bucketName
                + "/"
                + newFileName;
    }
}

FileItemVO (上传文件后响应结果)

@Data
@AllArgsConstructor
@NoArgsConstructor
@Builder
public class FileItemVO {
    /**
     * 文件id
     */
    private Long fileId;

    /**
     * 文件可访问URL
     */
    private String url;

    /**
     * 文件的拓展名
     */
    private String ext;

    /**
     * 上传的源文件的文件名，带有拓展
     */
    private String fileName;

    /**
     * 上传后的文件名
     */
    private String newFileName;

}

file表

DROP TABLE IF EXISTS `file`;
CREATE TABLE `file`  (
  `id` bigint(0) NOT NULL AUTO_INCREMENT COMMENT 'id',
  `file_name` varchar(255) CHARACTER SET utf8 COLLATE utf8_general_ci NOT NULL COMMENT '用户上传文件的原始名称，带有文件拓展',
  `ext` varchar(255) CHARACTER SET utf8 COLLATE utf8_general_ci NOT NULL COMMENT '文件拓展名',
  `type` int(0) NOT NULL COMMENT '文件类型：1医生照片 2其他图片 3体检报告',
  `url` varchar(255) CHARACTER SET utf8 COLLATE utf8_general_ci NOT NULL COMMENT 'url',
  `new_file_name` varchar(255) CHARACTER SET utf8 COLLATE utf8_general_ci NOT NULL COMMENT 'minio里面的文件名',
  `created_time` datetime(0) NOT NULL COMMENT '创建时间',
  `modified_time` datetime(0) NOT NULL COMMENT '修改时间',
  `state` int(0) NOT NULL DEFAULT 0 COMMENT '状态',
  PRIMARY KEY (`id`) USING BTREE
) ENGINE = InnoDB CHARACTER SET = utf8 COLLATE = utf8_general_ci ROW_FORMAT = Dynamic;

SET FOREIGN_KEY_CHECKS = 1;

参考链接：
https://www.cnblogs.com/shanheyongmu/p/15581961.html