<dependency>
  <groupId>com.jlefebure</groupId>
  <artifactId>spring-boot-starter-minio</artifactId>
  <version>1.1</version>
</dependency>

# Minio Host
spring.minio.url=http://10.21.80.17:9000/
# Minio Bucket name for your application
spring.minio.bucket=test
# Minio access key (login)
spring.minio.access-key=minioadmin
# Minio secret key (password)
spring.minio.secret-key=minioadmin
## MULTIPART (MultipartProperties)
# Enable multipart uploads
spring.servlet.multipart.enabled=true
# Threshold after which files are written to disk.
spring.servlet.multipart.file-size-threshold=2KB
# Max file size.
spring.servlet.multipart.max-file-size=500MB
# Max Request Size
spring.servlet.multipart.max-request-size=1024MB

 
import com.jlefebure.spring.boot.minio.MinioConfigurationProperties;
import com.jlefebure.spring.boot.minio.MinioException;
import com.jlefebure.spring.boot.minio.MinioService;
import io.minio.messages.Item;
import org.apache.tomcat.util.http.fileupload.IOUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.core.io.InputStreamResource;
import org.springframework.web.bind.annotation.*;
import org.springframework.web.multipart.MultipartFile;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.io.InputStream;
import java.net.URLConnection;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.util.List;
@RestController
public class MinioController {
    @Autowired
    private MinioService minioService;
    @Autowired
    private MinioConfigurationProperties configurationProperties;
    @GetMapping("/files")
    public List<Item> testMinio() throws MinioException {
        return minioService.list();
    }
    @GetMapping("files/{object}")
    public void getObject(@PathVariable("object") String object, HttpServletResponse response) throws com.jlefebure.spring.boot.minio.MinioException, IOException {
        InputStream inputStream = minioService.get(Paths.get(object));
        InputStreamResource inputStreamResource = new InputStreamResource(inputStream);
        // Set the content type and attachment header.
        response.addHeader("Content-disposition", "attachment;filename=" + object);
        response.setContentType(URLConnection.guessContentTypeFromName(object));
        // Copy the stream to the response's output stream.
        IOUtils.copy(inputStream, response.getOutputStream());
        response.flushBuffer();
    }
    @PostMapping
    public void addAttachement(@RequestParam("file") MultipartFile file) throws IOException {
        System.out.println(file);
        String filename = file.getOriginalFilename();
        Path path = Paths.get("/png/"+filename);
        String url = configurationProperties.getUrl() + "/" + configurationProperties.getBucket() + path.toAbsolutePath();
        System.out.println(url);
        try {
            minioService.upload(path, file.getInputStream(), file.getContentType());
        } catch (MinioException e) {
            throw new IllegalStateException("The file cannot be upload on the internal storage. Please retry later", e);
        } catch (IOException e) {
            throw new IllegalStateException("The file cannot be read", e);
        }
    }
}