Spring Boot配置MinIO(实现文件上传、读取、下载、删除)

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。

Windows MinIO使用教程(启动,登录,修改密码)

三、 pom.xml(maven依赖文件)


        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <version>1.18.16</version>
        </dependency>
        <!-- SpringBoot Web容器 -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <dependency>
            <groupId>io.minio</groupId>
            <artifactId>minio</artifactId>
            <version>8.3.4</version>
        </dependency>


 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;


/**
 * @Author yang
 * @Date 2023/1/3 14:00
 * @Version 1.0
 */
@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;

/**
 * @Author yang
 * @Date 2023/1/3 14:03
 * @Version 1.0
 */
@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<io.minio.messages.Bucket>
     * @date : 2020/8/16 23:28
     */
    @SneakyThrows(Exception.class)
    public static List<Bucket> 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;

/**
 * @Author yang
 * @Date 2023/1/3 14:15
 * @Version 1.0
 */
@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<Map<String, Object>> minioUpload(MultipartFile file, String fileName, String bucketName) {
        ResultEntity<Map<String, Object>> 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:

/**
 * @Author yangb
 * @Date 2022/11/27 15:55
 * @Version 1.0
 */
@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<Map<String, Object>> 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";
    }


}


七、调试结果


 1、 文件上传

 minio上的文件 

扫描二维码关注公众号,回复: 15203280 查看本文章


2、 文件下载 


3、 文件删除 

 我们在minio上看看文件是否已删除

猜你喜欢

转载自blog.csdn.net/Angel_asp/article/details/128535684