Springboot整合minio组件-分布式文件存储

一、快速开始

Minlo说明：

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。
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。
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/
Minlo作用类似于FastDFS和阿里云的OSS进行对象存储
安装minlo服务器参考：https://blog.csdn.net/u010189683/article/details/108171562

1、添加依赖

xml 复制代码

<!--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

yaml 复制代码

## minio配置 
minio:
   endpoint: http://192.168.179.131:9000/
   accessKey: admin
   secretKey: admin123456

3、配置项和工具类

java 复制代码

@Data
@Configuration
@ConfigurationProperties(prefix = "minio")
public class MinioConfig {

	private String endpoint;
	private String accessKey;
	private String secretKey;

	@Bean
	public 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
    @SneakyThrows
    public MinioClient setMinioClient(){
         MinioClient minioClient = new MinioClient(endpoint, accessKey, secretKey);
         return minioClient;
    }

	/**
	 * 检查存储桶是否存在
	 */
    @SneakyThrows
	public boolean bucketExists(String bucketName){
		boolean flag = minioClient.bucketExists(bucketName);
        return flag ? true : false;
	}

	/**
	 * 创建存储桶
	 */
    @SneakyThrows
	public 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
	 */
    @SneakyThrows
	public List<String> listBucketNames() {
		List<Bucket> bucketList = listBuckets();
        return bucketList.stream().map(item->bucket.name()).collect(Collector.toList())
	}

	/**
	 * 列出所有存储桶
	 */
    @SneakyThrows
	public List<Bucket> listBuckets() {
		return minioClient.listBuckets();
	}

	/**
	 * 删除存储桶
	 */
    @SneakyThrows
	public 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
	 */
    @SneakyThrows
	public 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
	 */
    @SneakyThrows
	public 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
	 */
    @SneakyThrows
	public 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
	 */
    @SneakyThrows
	public 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
	 */
    @SneakyThrows
	public 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）
	 */
    @SneakyThrows
	public 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
	 */
    @SneakyThrows
	public 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
	 */
    @SneakyThrows
	public 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
	 */
    @SneakyThrows
	public 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。
	 */
    @SneakyThrows
	public 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。
	 */
    @SneakyThrows
	public 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
	 */
    @SneakyThrows
	public ObjectStat statObject(String bucketName, String objectName){
        return bucketExists(bucketName) ? minioClient.statObject(bucketName, objectName) : null;
	}

	/**
	 * 文件访问路径
	 */
    @SneakyThrows
	public String getObjectUrl(String bucketName, String objectName) {
		return bucketExists(bucketName) ? minioClient.getObjectUrl(bucketName, objectName) : "";
	}
}