在Spring Boot项目中整合MinIO，可以按照以下步骤进行操作：

1. 添加MinIO依赖

        <dependency>
            <groupId>io.minio</groupId>
            <artifactId>minio</artifactId>
            <version>8.5.9</version>
        </dependency>

2. 配置MinIO连接

minio:
  endpoint: http://127.0.0.1:9000        #MinIO资源地址
  accessKey: minioadmin                  #访问key
  secretKey: minioadmin                  #访问密钥
  bucketName: test                       #存储桶名称

3. 创建MinIO配置类

@Data
@Configuration
public class MinioConfig  {
   

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

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

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

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

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

4. 创建MinIO工具类

@Component
public class MinioUtil {
   

    @Autowired
    private MinioClient minioClient;

    @Autowired
    private MinioConfig minioConfig;

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

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

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

    /**
     * 文件上传
     *
     * @param objectName 对象名称
     * @param file       文件
     * @return
     */
    public String uploadFile(String objectName, MultipartFile file) {
   
        try {
   
            InputStream stream = file.getInputStream();
            PutObjectArgs putObjectArgs = PutObjectArgs.builder()
                    .bucket(minioConfig.getBucketName())
                    .object(objectName)
                    .contentType(file.getContentType())
                    .stream(file.getInputStream(), file.getSize(), -1)
                    .build();
            minioClient.putObject(putObjectArgs);
            stream.close();

            return "%s/%s/%s".formatted(minioConfig.getEndpoint(), minioConfig.getBucketName(), objectName);
        } catch (Exception e) {
   
            e.printStackTrace();
        }
        return "";
    }

    /**
     * 获取对象url
     *
     * @param objectName 对象名称
     * @return
     */
    public String getObjectUrl(String objectName) {
   
        try {
   
            return minioClient.getPresignedObjectUrl(GetPresignedObjectUrlArgs.builder()
                    .method(Method.GET)
                    .bucket(minioConfig.getBucketName())
                    .object(objectName)
                    .build());
        } catch (Exception e) {
   
            e.printStackTrace();
        }
        return null;
    }

}

5. 控制器操作

@RestController
@RequestMapping("/api/file")
public class FileController {
   

    @Autowired
    private MinioUtil minioUtil;

    /**
     * 创建存储bucket
     *
     * @param bucketName
     * @return
     */
    @PostMapping("makeBucket")
    public Object makeBucket(String bucketName) {
   
        var success = minioUtil.makeBucket(bucketName);
        Map<String, Object> map = new HashMap<>();
        map.put("success", success);
        return map;
    }

    /**
     * 删除存储bucket
     *
     * @param bucketName
     * @return
     */
    @PostMapping("removeBucket")
    public Object removeBucket(String bucketName) {
   
        var success = minioUtil.removeBucket(bucketName);
        Map<String, Object> map = new HashMap<>();
        map.put("success", success);
        return map;
    }

    /**
     * 查看存储bucket是否存在
     *
     * @param bucketName
     * @return
     */
    @GetMapping("bucketExists")
    public Object bucketExists(String bucketName) {
   
        var success = minioUtil.bucketExists(bucketName);
        Map<String, Object> map = new HashMap<>();
        map.put("success", success);
        return map;
    }

    /**
     * 文件上传
     *
     * @param file
     * @return
     */
    @PostMapping(value = "/upload", consumes = MediaType.MULTIPART_FORM_DATA_VALUE)
    public Object uploadFile(@RequestParam("file") MultipartFile file) {
   
        String fileName = file.getOriginalFilename();
        var fileUrl = minioUtil.uploadFile(fileName, file);
        Map<String, Object> map = new HashMap<>();
        map.put("success", true);
        map.put("data", fileUrl);
        return map;
    }

    /**
     * 获取对象url
     *
     * @param objectName
     * @return
     */
    @GetMapping("getObjectUrl")
    public Object getObjectUrl(String objectName) {
   
        var fileUrl = minioUtil.getObjectUrl(objectName);
        Map<String, Object> map = new HashMap<>();
        map.put("success", true);
        map.put("data", fileUrl);
        return map;
    }
}