对象存储MinIO(实现文件上传、读取、下载、删除)

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对象存储MinIO(实现文件上传、读取、下载、删除)

2023-08-04 23:00| 来源: 网络整理| 查看: 265

一、 MinIO

        MinIO 是一个基于Apache License v2.0开源协议的对象存储服务。它兼容亚马逊S3云存储服

务接口,非常适合于存储大容量非结构化的数据,例如图片、视频、日志文件、备份数据和容器/

虚拟机镜像等,而一个对象文件可以是任意大小,从几kb到最大5T不等。

        MinIO是一个非常轻量的服务,可以很简单的和其他应用的结合,类似 NodeJS, Redis 或者

MySQL。

二、 MinIO安装和启动

       由于MinIO是一个单独的服务器,需要单独部署,有关MinIO在Windows系统上的使用请查看

以下博客。

window10安装minio_angelasp的博客-CSDN博客_win10 安装minio

三、 pom.xml(maven依赖文件)

org.springframework.boot spring-boot-starter-web io.minio minio 8.3.4

 四、 applicatin.properties(配置文件)

# 设置单个文件大小 spring.servlet.multipart.max-file-size= 50MB #minio文件服务器配置 s3.url=http://localhost:9000 s3.accessKey=admin s3.secretKey=admin123 s3.bucketName=test

五、 编写Java业务类

minio涉及到的方法有:判断存储桶是否存在,创建存储桶,上传文件,读取文件、下载文件,删

除文件等操作

1、StorageProperty 存储属性类:

import lombok.Data; import org.springframework.boot.context.properties.ConfigurationProperties; import org.springframework.stereotype.Component; @Data @Component @ConfigurationProperties(prefix = "s3") public class StorageProperty { private String url; private String accessKey; private String secretKey; // private long callTimeOut = 60000; // private long readTimeOut = 300000; }

2、minio配置类: 

import io.minio.BucketExistsArgs; import io.minio.MinioClient; import io.minio.messages.Bucket; import lombok.SneakyThrows; import lombok.extern.slf4j.Slf4j; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.context.annotation.Configuration; import org.springframework.stereotype.Component; import javax.annotation.PostConstruct; import java.util.List; @Slf4j @Component @Configuration public class MinioClientConfig { @Autowired private StorageProperty storageProperty; private static MinioClient minioClient; /** * @description: 获取minioClient * @date 2021/6/22 16:55 * @return io.minio.MinioClient */ public static MinioClient getMinioClient(){ return minioClient; } /** * 判断 bucket是否存在 * * @param bucketName: * 桶名 * @return: boolean * @date : 2020/8/16 20:53 */ @SneakyThrows(Exception.class) public static boolean bucketExists(String bucketName) { return minioClient.bucketExists(BucketExistsArgs.builder().bucket(bucketName).build()); } /** * 获取全部bucket * * @param : * @return: java.util.List * @date : 2020/8/16 23:28 */ @SneakyThrows(Exception.class) public static List getAllBuckets() { return minioClient.listBuckets(); } /** * 初始化minio配置 * * @param : * @return: void * @date : 2020/8/16 20:56 */ @PostConstruct public void init() { try { minioClient = MinioClient.builder() .endpoint(storageProperty.getUrl()) .credentials(storageProperty.getAccessKey(), storageProperty.getSecretKey()) .build(); } catch (Exception e) { e.printStackTrace(); log.error("初始化minio配置异常: 【{}】", e.fillInStackTrace()); } } }

3、minio工具类 

import io.minio.*; import lombok.extern.slf4j.Slf4j; import org.springframework.stereotype.Component; import org.springframework.web.multipart.MultipartFile; import javax.servlet.ServletOutputStream; import javax.servlet.http.HttpServletResponse; import java.io.InputStream; import java.nio.charset.StandardCharsets; import java.util.Map; @Slf4j @Component public class MinioUtil { /** * Minio文件上传 * * @param file 文件实体 * @param fileName 修饰过的文件名 非源文件名 * @param bucketName 所存文件夹(桶名) * @return */ public ResultEntity minioUpload(MultipartFile file, String fileName, String bucketName) { ResultEntity resultEntity = new ResultEntity(); try { MinioClient minioClient = MinioClientConfig.getMinioClient(); // fileName为空,说明要使用源文件名上传 if (fileName == null) { fileName = file.getOriginalFilename(); fileName = fileName.replaceAll(" ", "_"); } InputStream inputStream = file.getInputStream(); PutObjectArgs objectArgs = PutObjectArgs.builder().bucket(bucketName).object(fileName) .stream(inputStream, file.getSize(), -1).contentType(file.getContentType()).build(); //文件名称相同会覆盖 minioClient.putObject(objectArgs); return resultEntity; } catch (Exception e) { e.printStackTrace(); return null; } } /** * 检查存储桶是否存在 * * @param bucketName 存储桶名称 * @return */ public boolean bucketExists(String bucketName) { boolean flag = false; try { flag = MinioClientConfig.bucketExists(bucketName); if (flag) { return true; } } catch (Exception e) { e.printStackTrace(); return false; } return false; } /** * 获取文件流 * * @param fileName 文件名 * @param bucketName 桶名(文件夹) * @return */ public InputStream getFileInputStream(String fileName, String bucketName) { try { MinioClient minioClient = MinioClientConfig.getMinioClient(); return minioClient.getObject(GetObjectArgs.builder().bucket(bucketName).object(fileName).build()); } catch (Exception e) { e.printStackTrace(); log.error(e.getMessage()); } return null; } /** * @param bucketName: * @author * @description: 创建桶 * @date 2022/8/16 14:36 */ public void createBucketName(String bucketName) { try { if (StringUtils.isBlank(bucketName)) { return; } MinioClient minioClient = MinioClientConfig.getMinioClient(); boolean isExist = MinioClientConfig.bucketExists(bucketName); if (isExist) { log.info("Bucket {} already exists.", bucketName); } else { minioClient.makeBucket(MakeBucketArgs.builder().bucket(bucketName).build()); } } catch (Exception e) { e.printStackTrace(); log.error(e.getMessage()); } } /** * 下载文件 * * @param originalName 文件路径 */ public InputStream downloadFile(String bucketName, String originalName, HttpServletResponse response) { try { MinioClient minioClient = MinioClientConfig.getMinioClient(); InputStream file = minioClient.getObject(GetObjectArgs.builder().bucket(bucketName).object(originalName).build()); String filename = new String(originalName.getBytes("ISO8859-1"), StandardCharsets.UTF_8); if (StringUtils.isNotBlank(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(); return file; } catch (Exception e) { e.printStackTrace(); return null; } } /** * @param bucketName: * @description: 删除桶 * @date 2022/8/16 14:36 */ public void deleteBucketName(String bucketName) { try { if (StringUtils.isBlank(bucketName)) { return; } MinioClient minioClient = MinioClientConfig.getMinioClient(); boolean isExist = MinioClientConfig.bucketExists(bucketName); if (isExist) { minioClient.removeBucket(RemoveBucketArgs.builder().bucket(bucketName).build()); } } catch (Exception e) { e.printStackTrace(); log.error(e.getMessage()); } } /** * @param bucketName: * @description: 删除桶下面所有文件 * @date 2022/8/16 14:36 */ public void deleteBucketFile(String bucketName) { try { if (StringUtils.isBlank(bucketName)) { return; } MinioClient minioClient = MinioClientConfig.getMinioClient(); boolean isExist = minioClient.bucketExists(BucketExistsArgs.builder().bucket(bucketName).build()); if (isExist) { minioClient.deleteBucketEncryption(DeleteBucketEncryptionArgs.builder().bucket(bucketName).build()); } } catch (Exception e) { e.printStackTrace(); log.error(e.getMessage()); } } /** * 根据文件路径得到预览文件绝对地址 * * @param bucketName * @param fileName * @return */ public String getPreviewFileUrl(String bucketName, String fileName) { try { MinioClient minioClient = MinioClientConfig.getMinioClient(); return minioClient.getPresignedObjectUrl(GetPresignedObjectUrlArgs.builder().bucket(bucketName).object(fileName).build()); } catch (Exception e) { e.printStackTrace(); return ""; } } }

 六、 MinIoController

文件上传、文件读取、文件下载、文件删除接口如下:

@RestController @RequestMapping("/minio") public class MinIoController extends BaseController { MinioUtil minioUtil = new MinioUtil(); /** * 上传文件 * @param file * @return */ @PostMapping("/uploadFile") public AjaxResult uploadFile(@RequestBody MultipartFile file) { MinioClient minioClient = MinioClientConfig.getMinioClient(); if (minioClient == null) { return AjaxResult.error("连接MinIO服务器失败", null); } ResultEntity result = minioUtil.minioUpload(file, "", "data-enpower"); if (result.getCode() == 0) { return AjaxResult.success("上传成功"); } else { return AjaxResult.error("上传错误!!!"); } } /** * 获取文件预览地址 * @param fileName * @return */ @RequestMapping("/getRedFile") public AjaxResult getRedFile(@RequestBody String fileName) { MinioClient minioClient = MinioClientConfig.getMinioClient(); if (minioClient == null) { return AjaxResult.error("连接MinIO服务器失败", null); } String url = minioUtil.getPreviewFileUrl("data-enpower",fileName); return AjaxResult.success(url); } /** * 下载文件 * @param fileName * @param response * @return */ @RequestMapping("/downloadFile") public String downloadFile(@RequestParam String fileName, HttpServletResponse response) { MinioClient minioClient = MinioClientConfig.getMinioClient(); if (minioClient == null) { return "连接MinIO服务器失败"; } return minioUtil.downloadFile("data-enpower",fileName,response) != null ? "下载成功" : "下载失败"; } /** * 删除文件 * * @param fileName 文件路径 * @return */ @PostMapping("/deleteFile") public String deleteFile(String fileName) { MinioClient minioClient = MinioClientConfig.getMinioClient(); if (minioClient == null) { return "连接MinIO服务器失败"; } boolean flag = minioUtil.deleteFile("data-enpower",fileName); return flag == true ? "删除成功" : "删除失败"; } }

对象存储MinIO基本用法

对象存储服务MinIO的基本用法 

https://www.cnblogs.com/hackyle/p/minio-demo.html

 



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