Spring Boot + MinIO 实现文件上传

以下是一个使用Spring Boot和MinIO实现文件上传的简单例子：

1. 添加MinIO的依赖到pom.xml：

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

将RELEASE_VERSION替换为当前MinIO客户端库的最新版本。

2. 配置MinIO客户端：

@Configuration
public class MinioConfig {
    @Value("${minio.url}")
    private String url;
 
    @Value("${minio.access-key}")
    private String accessKey;
 
    @Value("${minio.secret-key}")
    private String secretKey;
 
    @Bean
    public MinioClient minioClient() throws InvalidPortException, InvalidEndpointException {
        return new MinioClient(url, accessKey, secretKey);
    }
}

在application.properties或application.yml中配置MinIO的URL、访问密钥和秘密密钥。

3. 创建一个上传文件的服务：

@Service
public class FileUploadService {
    private final MinioClient minioClient;
 
    @Autowired
    public FileUploadService(MinioClient minioClient) {
        this.minioClient = minioClient;
    }
 
    public String uploadFile(String bucketName, MultipartFile file) throws IOException, InvalidKeyException, NoSuchAlgorithmException, InsufficientDataException, ErrorResponseException, XmlParserException, InvalidBucketNameException, InternalException, InvalidArgumentException, InvalidResponseException {
        String filename = file.getOriginalFilename();
        minioClient.putObject(bucketName, filename, file.getInputStream(), file.getContentType());
        return filename;
    }
}

4. 创建一个控制器来处理文件上传的HTTP请求：

@RestController
public class FileUploadController {
    private final FileUploadService fileUploadService;
 
    @Autowired
    public FileUploadController(FileUploadService fileUploadService) {
        this.fileUploadService = fileUploadService;
    }
 
    @PostMapping("/upload")
    public ResponseEntity<String> uploadFile(@RequestParam("file") MultipartFile file, @RequestParam("bucket") String bucketName) {
        try {
            String filename = fileUploadService.uploadFile(bucketName, file);
            ret