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一、快速开始

Minlo说明：

1. Minio是Apcche旗下的一款开源的轻量级文件服务器，基于对象存储，协议是基于Apache License v2.0，开源可用于商务。
2. Minio主要用来存储非结构化的数据，类似文件，图片，照片，日志文件，各类备份文件等，按照官网描述，文件的大小从几KB到5TB。
3. Minio提供了非常方便，友好的界面，并且文档也是非常丰富，具体可以参考它的文档：https://docs.min.io/cn/
4. Minlo作用类似于FastDFS和阿里云的OSS进行对象存储
5. 安装minlo服务器参考：https://blog.csdn.net/u010189683/article/details/108171562

1、添加依赖

<!--minio方案-->
<dependency><groupId>io.minio</groupId><artifactId>minio</artifactId><version>7.0.2</version>
</dependency>
<dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-configuration-processor</artifactId><optional>true</optional>
</dependency>

2、添加配置项

## minio配置 
minio:endpoint: http://192.168.179.131:9000/accessKey: adminsecretKey: admin123456    

3、配置项和工具类

@Data
@Configuration
@ConfigurationProperties(prefix = "minio")
public class MinioConfig {private String endpoint;private String accessKey;private String secretKey;@Beanpublic MinioClient getMinioClient() throws InvalidEndpointException, InvalidPortException {MinioClient minioClient = new MinioClient(endpoint, accessKey, secretKey);return minioClient;}}
@Component
public class MinioUtil {@Value("${minio.endpoint}")private String endpoint;@Value("${minio.accessKey}")private String accessKey;@Value("${minio.secretKey}")private String secretKey;private static final int DEFAULT_EXPIRY_TIME = 7 * 24 * 3600;private static MinioClient minioClient;@Autowired@SneakyThrowspublic MinioClient setMinioClient(){MinioClient minioClient = new MinioClient(endpoint, accessKey, secretKey);return minioClient;}/*** 检查存储桶是否存在*/@SneakyThrowspublic boolean bucketExists(String bucketName){boolean flag = minioClient.bucketExists(bucketName);return flag ? true : false;}/*** 创建存储桶*/@SneakyThrowspublic boolean makeBucket(String bucketName) {boolean flag = bucketExists(bucketName);if(flag) return false;minioClient.makeBucket(bucketName);return true;}/*** 列出所有存储桶名称*/@SneakyThrowspublic List<String> listBucketNames() {List<Bucket> bucketList = listBuckets();return bucketList.stream().map(item->bucket.name()).collect(Collector.toList())}/*** 列出所有存储桶*/@SneakyThrowspublic List<Bucket> listBuckets() {return minioClient.listBuckets();}/*** 删除存储桶*/@SneakyThrowspublic boolean removeBucket(String bucketName) {boolean flag = bucketExists(bucketName);if(flag) return false;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(bucketName);flag = bucketExists(bucketName);if (!flag) {return true;}}/*** 列出存储桶中的所有对象名称*/@SneakyThrowspublic List<String> listObjectNames(String bucketName) {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;}/*** 列出存储桶中的所有对象*/@SneakyThrowspublic Iterable<Result<Item>> listObjects(String bucketName)  {boolean flag = bucketExists(bucketName);return flag?minioClient.listObjects(bucketName):null;}/*** 通过文件上传到对象*/@SneakyThrowspublic boolean putObject(String bucketName, String objectName, String fileName){boolean flag = bucketExists(bucketName);if (flag) {minioClient.putObject(bucketName, objectName, fileName, null);ObjectStat statObject = statObject(bucketName, objectName);if (statObject != null && statObject.length() > 0) {return true;}}return false;}/*** 通过InputStream上传对象*/@SneakyThrowspublic boolean putObject(String bucketName, String objectName, InputStream stream) {boolean flag = bucketExists(bucketName);if (flag) {minioClient.putObject(bucketName, objectName, stream, new PutObjectOptions(stream.available(), -1));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*/@SneakyThrowspublic InputStream getObject(String bucketName, String objectName){boolean flag = bucketExists(bucketName);if (flag) {ObjectStat statObject = statObject(bucketName, objectName);if (statObject != null && statObject.length() > 0) {InputStream stream = minioClient.getObject(bucketName, objectName);return stream;}}return null;}/*** 以流的形式获取一个文件对象（断点下载）*/@SneakyThrowspublic InputStream getObject(String bucketName, String objectName, long offset, Long length){boolean flag = bucketExists(bucketName);if (flag) {ObjectStat statObject = statObject(bucketName, objectName);if (statObject != null && statObject.length() > 0) {InputStream stream = minioClient.getObject(bucketName, objectName, offset, length);return stream;}}return null;}/*** 下载并将文件保存到本地*/@SneakyThrowspublic boolean getObject(String bucketName, String objectName, String fileName) {boolean flag = bucketExists(bucketName);if (flag) {ObjectStat statObject = statObject(bucketName, objectName);if (statObject != null && statObject.length() > 0) {minioClient.getObject(bucketName, objectName, fileName);return true;}}return false;}/*** 删除一个对象*/@SneakyThrowspublic boolean removeObject(String bucketName, String objectName) {boolean flag = bucketExists(bucketName);if (flag) {minioClient.removeObject(bucketName, objectName);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*/@SneakyThrowspublic List<String> removeObject(String bucketName, List<String> objectNames){List<String> deleteErrorNames = new ArrayList<>();boolean flag = bucketExists(bucketName);if (flag) {Iterable<Result<DeleteError>> results = minioClient.removeObjects(bucketName, objectNames);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。*/@SneakyThrowspublic String presignedGetObject(String bucketName, String objectName, Integer expires) {boolean flag = bucketExists(bucketName);return bucketExists(bucketName) ? minioClient.presignedGetObject(bucketName, objectName, expires):null;}/*** 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。*/@SneakyThrowspublic String presignedPutObject(String bucketName, String objectName, Integer expires) {return bucketExists(bucketName) ? minioClient.presignedPutObject(bucketName, objectName, expires):null;}/*** 获取对象的元数据*/@SneakyThrowspublic ObjectStat statObject(String bucketName, String objectName){return bucketExists(bucketName) ? minioClient.statObject(bucketName, objectName) : null;}/*** 文件访问路径*/@SneakyThrowspublic String getObjectUrl(String bucketName, String objectName) {return bucketExists(bucketName) ? minioClient.getObjectUrl(bucketName, objectName) : "";}
}