SpringBoot - Minio

1、简介

MinIO 是一个开源的对象存储服务器，用于存储和管理大规模的非结构化数据，例如图像、视频、日志文件、备份和容器镜像。MinIO 旨在提供高性能、高可用性、可扩展性和易用性的对象存储解决方案，适用于私有云、公共云和混合云环境。

2、引入依赖

<dependency><groupId>com.squareup.okhttp3</groupId><artifactId>okhttp</artifactId><version>4.8.1</version> <!-- minio 依赖于 okhttp 且版本较高。注意，spring-boot-dependencies 中的不够高 -->
</dependency>
<dependency><groupId>io.minio</groupId><artifactId>minio</artifactId><version>8.3.9</version>
</dependency>

3、相关配置

# minio 文件存储配置信息
minio:endpoint: http://192.168.128.128:9000accesskey: minioadminsecretKey: minioadminbucketName: test

4、配置类和配置属性

@Configuration
@Component
@ConfigurationProperties(prefix = "minio")
@Data
public class MinioConfig {private String endpoint;private String accessKey;private String secretKey;private String bucketName;@Beanpublic MinioClient getMinioClient() throws InvalidPortException {MinioClient minioClient = MinioClient.builder().endpoint(endpoint).credentials(accessKey, secretKey).build();return minioClient;}
}

5、创建一个数据表，用于保存上传到minio的文件的信息

CREATE TABLE `minio_file` (`id` bigint(20) NOT NULL COMMENT '文件id',`original_file_name` varchar(255) COLLATE utf8mb4_bin DEFAULT NULL COMMENT '原始文件名称',`file_ext_name` varchar(15) COLLATE utf8mb4_bin DEFAULT NULL COMMENT '文件拓展名',`file_size` bigint(20) DEFAULT NULL COMMENT '文件大小(单位：字节）',`file_name` varchar(35) COLLATE utf8mb4_bin DEFAULT NULL COMMENT '存入minio时的文件名称',`mime` varchar(50) COLLATE utf8mb4_bin DEFAULT NULL COMMENT '文件的content-type',`file_url` varchar(255) COLLATE utf8mb4_bin DEFAULT NULL COMMENT '文件路径',`is_delete` tinyint(1) DEFAULT NULL COMMENT '是否删除 0 否 1 是',`create_by` varchar(25) COLLATE utf8mb4_bin DEFAULT NULL COMMENT '创建者',`update_by` varchar(25) COLLATE utf8mb4_bin DEFAULT NULL COMMENT '更改者',`create_time` datetime DEFAULT NULL COMMENT '创建时间',`update_time` datetime DEFAULT NULL COMMENT '更新时间',PRIMARY KEY (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_bin;

6、 MinIO 客户端工具类

@Component
@Slf4j
public class MinioClientUtils {@Autowiredprivate MinioClient minioClient;private static final int DEFAULT_EXPIRY_TIME = 7 * 24 * 3600;/*** 检查存储桶是否存在** @param bucketName 存储桶名称*/public boolean bucketExists(String bucketName) throws Exception{boolean flag = false;flag = minioClient.bucketExists(BucketExistsArgs.builder().bucket(bucketName).build());if (flag) {return true;}return false;}/*** 创建存储桶** @param bucketName 存储桶名称*/public boolean makeBucket(String bucketName) throws Exception {boolean flag = bucketExists(bucketName);if (!flag) {minioClient.makeBucket( MakeBucketArgs.builder().bucket(bucketName).build());return true;} else {return false;}}/*** 列出所有存储桶*/public List<Bucket> listBuckets() throws Exception {return minioClient.listBuckets();}/*** 删除存储桶** @param bucketName 存储桶名称*/public boolean removeBucket(String bucketName) throws Exception {boolean flag = bucketExists(bucketName);if (flag) {Iterable<Result<Item>> myObjects = listObjects(bucketName);for (Result<Item> result : myObjects) {Item item = result.get();// 有对象文件，则删除失败if (item.size() > 0) {return false;}}// 删除存储桶，注意，只有存储桶为空时才能删除成功。minioClient.removeBucket(RemoveBucketArgs.builder().bucket(bucketName).build());flag = bucketExists(bucketName);if (!flag) {return true;}}return false;}/*** 列出存储桶中的所有对象** @param bucketName 存储桶名称*/public Iterable<Result<Item>> listObjects(String bucketName) throws Exception {boolean flag = bucketExists(bucketName);if (flag) {return minioClient.listObjects( ListObjectsArgs.builder().bucket(bucketName).build());}return null;}/*** 列出存储桶中的所有对象名称** @param bucketName 存储桶名称*/public List<String> listObjectNames(String bucketName) throws Exception {List<String> listObjectNames = new ArrayList<>();boolean flag = bucketExists(bucketName);if (flag) {Iterable<Result<Item>> myObjects = listObjects(bucketName);for (Result<Item> result : myObjects) {Item item = result.get();listObjectNames.add(item.objectName());}}return listObjectNames;}/*** 通过文件上传到对象** @param bucketName 存储桶名称* @param objectName 存储桶里的对象名称* @param fileName   File name*/public boolean uploadObject(String bucketName, String objectName, String fileName) throws Exception {boolean flag = bucketExists(bucketName);if (flag) {minioClient.uploadObject( UploadObjectArgs.builder().bucket(bucketName).object(objectName).filename(fileName).build());ObjectStat statObject = statObject(bucketName, objectName);if (statObject != null && statObject.length() > 0) {return true;}}return false;}/*** 文件上传** @param bucketName 存储捅名称* @param multipartFile 文件* @param filename   文件名*/public void putObject(String bucketName, MultipartFile multipartFile, String filename) throws Exception {PutObjectOptions putObjectOptions = new PutObjectOptions(multipartFile.getSize(), PutObjectOptions.MIN_MULTIPART_SIZE);putObjectOptions.setContentType(multipartFile.getContentType());minioClient.putObject(PutObjectArgs.builder().bucket(bucketName).object(filename).stream(
multipartFile.getInputStream(),multipartFile.getSize(), -1).contentType(multipartFile.getContentType()
).build()
);}/*** 通过InputStream上传对象** @param bucketName 存储桶名称* @param objectName 存储桶里的对象名称* @param inputStream     要上传的流* @param contentType 上传的文件类型 例如 video/mp4  image/jpg*/public boolean putObject(String bucketName, String objectName, InputStream inputStream,String contentType) throws Exception {boolean flag = bucketExists(bucketName);if (flag) {minioClient.putObject(PutObjectArgs.builder().bucket(bucketName).object(objectName).stream(//不清楚文件的大小时，可以传-1，10485760。如果知道大小也可以传入size，partsize。inputStream,  -1, 10485760).contentType(contentType).build()
);ObjectStat statObject = statObject(bucketName, objectName);if (statObject != null && statObject.length() > 0) {return true;}}return false;}/*** 以流的形式获取一个文件对象** @param bucketName 存储桶名称* @param objectName 存储桶里的对象名称*/public InputStream getObject(String bucketName, String objectName) throws Exception {boolean flag = bucketExists(bucketName);if (flag) {ObjectStat statObject = statObject(bucketName, objectName);if (statObject != null && statObject.length() > 0) {InputStream stream = minioClient.getObject( GetObjectArgs.builder().bucket(bucketName).object(objectName).build());return stream;}}return null;}/*** 以流的形式获取一个文件对象（断点下载）** @param bucketName 存储桶名称* @param objectName 存储桶里的对象名称* @param offset     起始字节的位置* @param length     要读取的长度 (可选，如果无值则代表读到文件结尾)*/public InputStream getObject(String bucketName, String objectName, long offset, Long length) throws Exception {boolean flag = bucketExists(bucketName);if (flag) {ObjectStat statObject = statObject(bucketName, objectName);if (statObject != null && statObject.length() > 0) {InputStream stream = minioClient.getObject(  
GetObjectArgs.builder().bucket(bucketName).object(objectName).offset(1024L).length(4096L).build()
);return stream;}}return null;}/*** 下载并将文件保存到本地** @param bucketName 存储桶名称* @param objectName 存储桶里的对象名称* @param fileName   File name*/public boolean downloadObject(String bucketName, String objectName, String fileName) throws Exception {boolean flag = bucketExists(bucketName);if (flag) {ObjectStat statObject = statObject(bucketName, objectName);if (statObject != null && statObject.length() > 0) {minioClient.downloadObject(DownloadObjectArgs.builder().bucket(bucketName).object(objectName).filename(fileName).build());return true;}}return false;}/*** 删除一个对象** @param bucketName 存储桶名称* @param objectName 存储桶里的对象名称*/public boolean removeObject(String bucketName, String objectName) throws Exception {boolean flag = bucketExists(bucketName);if (flag) {minioClient.removeObject(RemoveObjectArgs.builder().bucket(bucketName).object(objectName).build());return true;}return false;}/*** 删除指定桶的多个文件对象,返回删除错误的对象列表，全部删除成功，返回空列表** @param bucketName  存储桶名称* @param objectNames 含有要删除的多个object名称的迭代器对象* eg:* List<DeleteObject> objects = new LinkedList<>();* objects.add(new DeleteObject("my-objectname1"));* objects.add(new DeleteObject("my-objectname2"));* objects.add(new DeleteObject("my-objectname3"));*/public List<String> removeObjects(String bucketName, List<DeleteObject> objectNames) throws Exception {List<String> deleteErrorNames = new ArrayList<>();boolean flag = bucketExists(bucketName);if (flag) {Iterable<Result<DeleteError>> results = minioClient.removeObjects(
RemoveObjectsArgs.builder().bucket(bucketName).objects(objectNames).build()
);for (Result<DeleteError> result : results) {DeleteError error = result.get();deleteErrorNames.add(error.objectName());}}return deleteErrorNames;}/*** 生成一个给HTTP GET请求用的presigned URL。* 浏览器/移动端的客户端可以用这个URL进行下载，即使其所在的存储桶是私有的。这个presigned URL可以设置一个失效时间，默认值是7天。** @param bucketName 存储桶名称* @param objectName 存储桶里的对象名称* @param expires    失效时间（以秒为单位），默认是7天，不得大于七天*/public String getPresignedObjectUrl(String bucketName, String objectName, Integer expires) throws Exception {boolean flag = bucketExists(bucketName);String url = "";if (flag) {if (expires < 1 || expires > DEFAULT_EXPIRY_TIME) {throw new InvalidExpiresRangeException(expires, "expires must be in range of 1 to " + DEFAULT_EXPIRY_TIME);}try {url = minioClient.getPresignedObjectUrl(GetPresignedObjectUrlArgs.builder().method(Method.GET).bucket(bucketName).object(objectName).expiry(expires)//动态参数
//                      .expiry(24 * 60 * 60)//用秒来计算一天时间有效期
//                      .expiry(1, TimeUnit.DAYS)//按天传参
//                      .expiry(1, TimeUnit.HOURS)//按小时传参数.build());} catch (Exception e) {e.printStackTrace();}}return url;}/*** 生成一个给HTTP PUT请求用的presigned URL。* 浏览器/移动端的客户端可以用这个URL进行上传，即使其所在的存储桶是私有的。这个presigned URL可以设置一个失效时间，默认值是7天。** @param bucketName 存储桶名称* @param objectName 存储桶里的对象名称* @param expires    失效时间（以秒为单位），默认是7天，不得大于七天*/public String presignedPutObject(String bucketName, String objectName, Integer expires) throws Exception {boolean flag = bucketExists(bucketName);String url = "";if (flag) {if (expires < 1 || expires > DEFAULT_EXPIRY_TIME) {try {throw new InvalidExpiresRangeException(expires, "expires must be in range of 1 to " + DEFAULT_EXPIRY_TIME);} catch (InvalidExpiresRangeException e) {e.printStackTrace();}}try {url = minioClient.getPresignedObjectUrl(GetPresignedObjectUrlArgs.builder().method(Method.PUT).bucket(bucketName).object(objectName).expiry(expires)//动态参数
//                      .expiry(24 * 60 * 60)//用秒来计算一天时间有效期
//                      .expiry(1, TimeUnit.DAYS)//按天传参
//                      .expiry(1, TimeUnit.HOURS)//按小时传参数.build());} catch (Exception e) {log.error("XmlParserException",e);}}return url;}/*** 获取对象的元数据** @param bucketName 存储桶名称* @param objectName 存储桶里的对象名称*/public ObjectStat statObject(String bucketName, String objectName) throws Exception {boolean flag = bucketExists(bucketName);if (flag) {ObjectStat statObject = null;try {statObject = minioClient.statObject(StatObjectArgs.builder().bucket(bucketName).object(objectName).build());} catch (Exception e) {log.error("XmlParserException",e);}return statObject;}return null;}/*** 文件访问路径** @param bucketName 存储桶名称* @param objectName 存储桶里的对象名称*/public String getObjectUrl(String bucketName, String objectName) throws Exception {boolean flag = bucketExists(bucketName);String url = "";if (flag) {try {url = minioClient.getObjectUrl(bucketName, objectName);} catch (Exception e) {log.error("XmlParserException",e);}}return url;}public void downloadFile(String bucketName, String fileName, String originalName, HttpServletResponse response) {try {InputStream file = minioClient.getObject(GetObjectArgs.builder().bucket(bucketName).object(fileName).build());String filename = new String(fileName.getBytes("ISO8859-1"), StandardCharsets.UTF_8);if (StringUtils.isNotEmpty(originalName)) {fileName = originalName;}response.setHeader("Content-Disposition", "attachment;filename=" + filename);ServletOutputStream servletOutputStream = response.getOutputStream();int len;byte[] buffer = new byte[1024];while ((len = file.read(buffer)) > 0) {servletOutputStream.write(buffer, 0, len);}servletOutputStream.flush();file.close();servletOutputStream.close();} catch (Exception e) {log.error("Exception",e);}}
}