SpringBoot整合Minio

环境版本信息

MinIO VERSION : 2023-07-11T21:29:34Z

spring-boot : 3.3.1

jdk: 17

1 pom 依赖

<dependency>
            <groupId>io.minio</groupId>
            <artifactId>minio</artifactId>
            <version>8.3.3</version>
</dependency>

2 yml配置

minio:
  accessKey: admin
  bucketName: fengjing
  endpoint: http://127.0.0.1:9000
  fileSize: 10485760
  imgSize: 10485760
  secretKey: admin123
  separator: /

3 配置类

@Component
@Data
@ConfigurationProperties(prefix = "minio")
public class MinioProperties {

    /**
     * 连接地址
     */
    private String endpoint;

    /**
     * 桶名称
     */
    private String bucketName;

    /**
     * 账号
     */
    private String accessKey;

    /**
     * 密码
     */
    private String secretKey;

    /**
     * 图片大小
     */
    private Integer imgSize;

    /**
     * 文件大小
     */
    private Integer fileSize;

    /**
     * 分隔符
     */
    private String separator;

}

4 工具类

import io.minio.*;
import io.minio.http.Method;
import io.minio.messages.Bucket;
import io.minio.messages.DeleteObject;
import io.minio.messages.Item;
import jakarta.annotation.PostConstruct;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;
import org.springframework.web.multipart.MultipartFile;
import java.io.ByteArrayInputStream;
import java.io.InputStream;
import java.io.UnsupportedEncodingException;
import java.net.URLDecoder;
import java.util.ArrayList;
import java.util.LinkedList;
import java.util.List;
import java.util.Optional;


@Slf4j
@Component
public class MinIoUtil {

    @Autowired
    MinioProperties minioProperties;

    private MinioClient minioClient;

    /**
     * 初始化minio配置
     */
    @PostConstruct
    public void init(){
        try{
            if (null == minioClient) {
                log.info("开始创建 MinioClient...");
                minioClient = MinioClient
                        .builder()
                        .endpoint(minioProperties.getEndpoint())
                        .credentials(minioProperties.getAccessKey(), minioProperties.getSecretKey())
                        .build();
                createBucket(minioProperties.getBucketName());
                log.info("创建完毕 MinioClient...");
            }
        } catch (Exception e) {
            log.error("[Minio工具类]>>>> MinIO服务器异常：", e);
        }
    }

    /**
     * 获取上传文件前缀路径
     * @return
     */
    public String getBasisUrl() {
        return minioProperties.getEndpoint() + minioProperties.getSeparator() + minioProperties.getBucketName() + minioProperties.getSeparator();
    }

    /******************************  Operate Bucket Start  ******************************/

    /**
     * 启动SpringBoot容器的时候初始化Bucket
     * 如果没有Bucket则创建
     * @throws Exception
     */
   public void createBucket(String bucketName) throws Exception {
        if (!bucketExists(bucketName)) {
            minioClient.makeBucket(MakeBucketArgs.builder().bucket(bucketName).build());
            //修改桶策略为读写权限
            String READ_WRITE = "{\"Version\":\"2012-10-17\",\"Statement\":[{\"Effect\":\"Allow\",\"Principal\":{\"AWS\":[\"*\"]},\"Action\":[\"s3:GetBucketLocation\",\"s3:ListBucket\",\"s3:ListBucketMultipartUploads\"],\"Resource\":[\"arn:aws:s3:::" + bucketName + "\"]},{\"Effect\":\"Allow\",\"Principal\":{\"AWS\":[\"*\"]},\"Action\":[\"s3:DeleteObject\",\"s3:GetObject\",\"s3:ListMultipartUploadParts\",\"s3:PutObject\",\"s3:AbortMultipartUpload\"],\"Resource\":[\"arn:aws:s3:::" + bucketName + "/*\"]}]}";
            minioClient.setBucketPolicy(SetBucketPolicyArgs.builder().bucket(bucketName).config(READ_WRITE).build());
        }
    }

    /**
     *  判断Bucket是否存在，true：存在，false：不存在
     * @return
     * @throws Exception
     */
    public boolean bucketExists(String bucketName) throws Exception {
        return minioClient.bucketExists(BucketExistsArgs.builder().bucket(bucketName).build());
    }


    /**
     * 获得Bucket的策略
     * @param bucketName
     * @return
     * @throws Exception
     */
    public String getBucketPolicy(String bucketName) throws Exception {
        return minioClient
                .getBucketPolicy(
                        GetBucketPolicyArgs
                                .builder()
                                .bucket(bucketName)
                                .build()
                );
    }


    /**
     * 获得所有Bucket列表
     * @return
     * @throws Exception
     */
    public List<Bucket> getAllBuckets() throws Exception {
        return minioClient.listBuckets();
    }

    /**
     * 根据bucketName获取其相关信息
     * @param bucketName
     * @return
     * @throws Exception
     */
    public Optional<Bucket> getBucket(String bucketName) throws Exception {
        return getAllBuckets().stream().filter(b -> b.name().equals(bucketName)).findFirst();
    }

    /**
     * 根据bucketName删除Bucket，true：删除成功； false：删除失败，文件或已不存在
     * @param bucketName
     * @throws Exception
     */
    public void removeBucket(String bucketName) throws Exception {
        minioClient.removeBucket(RemoveBucketArgs.builder().bucket(bucketName).build());
    }

    /******************************  Operate Bucket End  ******************************/


    /******************************  Operate Files Start  ******************************/

    /**
     * 判断文件是否存在
     * @param bucketName 存储桶
     * @param objectName 文件名
     * @return
     */
    public boolean isObjectExist(String bucketName, String objectName) {
        boolean exist = true;
        try {
            minioClient.statObject(StatObjectArgs.builder().bucket(bucketName).object(objectName).build());
        } catch (Exception e) {
            log.error("[Minio工具类]>>>> 判断文件是否存在, 异常：", e);
            exist = false;
        }
        return exist;
    }

    /**
     * 判断文件夹是否存在
     * @param bucketName 存储桶
     * @param objectName 文件夹名称
     * @return
     */
    public boolean isFolderExist(String bucketName, String objectName) {
        boolean exist = false;
        try {
            Iterable<Result<Item>> results = minioClient.listObjects(
                    ListObjectsArgs.builder().bucket(bucketName).prefix(objectName).recursive(false).build());
            for (Result<Item> result : results) {
                Item item = result.get();
                if (item.isDir() && objectName.equals(item.objectName())) {
                    exist = true;
                }
            }
        } catch (Exception e) {
            log.error("[Minio工具类]>>>> 判断文件夹是否存在，异常：", e);
            exist = false;
        }
        return exist;
    }

    /**
     * 根据文件前置查询文件
     * @param bucketName 存储桶
     * @param prefix 前缀
     * @param recursive 是否使用递归查询
     * @return MinioItem 列表
     * @throws Exception
     */
    public List<Item> getAllObjectsByPrefix(String bucketName,
                                                   String prefix,
                                                   boolean recursive) throws Exception {
        List<Item> list = new ArrayList<>();
        Iterable<Result<Item>> objectsIterator = minioClient.listObjects(
                ListObjectsArgs.builder().bucket(bucketName).prefix(prefix).recursive(recursive).build());
        if (objectsIterator != null) {
            for (Result<Item> o : objectsIterator) {
                Item item = o.get();
                list.add(item);
            }
        }
        return list;
    }

    /**
     * 获取文件流
     * @param bucketName 存储桶
     * @param objectName 文件名
     * @return 二进制流
     */
    public InputStream getObject(String bucketName, String objectName) throws Exception {
        return minioClient.getObject(GetObjectArgs.builder().bucket(bucketName).object(objectName).build());
    }

    /**
     * 断点下载
     * @param bucketName 存储桶
     * @param objectName 文件名称
     * @param offset 起始字节的位置
     * @param length 要读取的长度
     * @return 二进制流
     */
    public InputStream getObject(String bucketName, String objectName, long offset, long length)throws Exception {
        return minioClient.getObject(
                GetObjectArgs.builder()
                        .bucket(bucketName)
                        .object(objectName)
                        .offset(offset)
                        .length(length)
                        .build());
    }

    /**
     * 获取路径下文件列表
     * @param bucketName 存储桶
     * @param prefix 文件名称
     * @param recursive 是否递归查找，false：模拟文件夹结构查找
     * @return 二进制流
     */
    public Iterable<Result<Item>> listObjects(String bucketName, String prefix,
                                                     boolean recursive) {
        return minioClient.listObjects(
                ListObjectsArgs.builder()
                        .bucket(bucketName)
                        .prefix(prefix)
                        .recursive(recursive)
                        .build());
    }

    /**
     * 使用MultipartFile进行文件上传
     * @param bucketName 存储桶
     * @param file 文件名
     * @param objectName 对象名
     * @param contentType 类型
     * @return
     * @throws Exception
     */
    public ObjectWriteResponse uploadFile(String bucketName, MultipartFile file,
                                                 String objectName, String contentType) throws Exception {
        InputStream inputStream = file.getInputStream();
        return minioClient.putObject(
                PutObjectArgs.builder()
                        .bucket(bucketName)
                        .object(objectName)
                        .contentType(contentType)
                        .stream(inputStream, inputStream.available(), -1)
                        .build());
    }

    /**
     * 上传本地文件
     * @param bucketName 存储桶
     * @param objectName 对象名称（落盘名称 需要加后缀 如：xx.jpg）
     * @param fileName 本地文件路径
     */
    public ObjectWriteResponse uploadFile(String bucketName, String objectName,
                                                 String fileName) throws Exception {
        return minioClient.uploadObject(
                UploadObjectArgs.builder()
                        .bucket(bucketName)
                        .object(objectName)
                        .filename(fileName)
                        .build());
    }

    /**
     * 通过流上传文件
     *
     * @param bucketName 存储桶
     * @param objectName 文件对象
     * @param inputStream 文件流
     */
    public ObjectWriteResponse uploadFile(String bucketName, String objectName, InputStream inputStream) throws Exception {
        return minioClient.putObject(
                PutObjectArgs.builder()
                        .bucket(bucketName)
                        .object(objectName)
                        .stream(inputStream, inputStream.available(), -1)
                        .build());
    }

    /**
     * 创建文件夹或目录
     * @param bucketName 存储桶
     * @param objectName 目录路径
     */
    public ObjectWriteResponse createDir(String bucketName, String objectName) throws Exception {
        return minioClient.putObject(
                PutObjectArgs.builder()
                        .bucket(bucketName)
                        .object(objectName)
                        .stream(new ByteArrayInputStream(new byte[]{}), 0, -1)
                        .build());
    }

    /**
     * 获取文件信息, 如果抛出异常则说明文件不存在
     *
     * @param bucketName 存储桶
     * @param objectName 文件名称
     */
    public String getFileStatusInfo(String bucketName, String objectName) throws Exception {
        return minioClient.statObject(
                StatObjectArgs.builder()
                        .bucket(bucketName)
                        .object(objectName)
                        .build()).toString();
    }

    /**
     * 拷贝文件
     *
     * @param bucketName 存储桶
     * @param objectName 文件名
     * @param srcBucketName 目标存储桶
     * @param srcObjectName 目标文件名
     */
    public ObjectWriteResponse copyFile(String bucketName, String objectName,
                                               String srcBucketName, String srcObjectName) throws Exception {
        return minioClient.copyObject(
                CopyObjectArgs.builder()
                        .source(CopySource.builder().bucket(bucketName).object(objectName).build())
                        .bucket(srcBucketName)
                        .object(srcObjectName)
                        .build());
    }

    /**
     * 删除文件
     * @param bucketName 存储桶
     * @param objectName 文件名称
     */
    public void removeFile(String bucketName, String objectName) throws Exception {
        minioClient.removeObject(
                RemoveObjectArgs.builder()
                        .bucket(bucketName)
                        .object(objectName)
                        .build());
    }

    /**
     * 批量删除文件
     * @param bucketName 存储桶
     * @param keys 需要删除的文件列表
     * @return
     */
    public void removeFiles(String bucketName, List<String> keys) {
        List<DeleteObject> objects = new LinkedList<>();
        keys.forEach(s -> {
            objects.add(new DeleteObject(s));
            try {
                removeFile(bucketName, s);
            } catch (Exception e) {
                log.error("[Minio工具类]>>>> 批量删除文件，异常：", e);
            }
        });
    }

    /**
     * 获取文件外链
     * @param bucketName 存储桶
     * @param objectName 文件名
     * @param expires 过期时间 <=7 秒 （外链有效时间（单位：秒））
     * @return url
     * @throws Exception
     */
    public String getPresignedObjectUrl(String bucketName, String objectName, Integer expires) throws Exception {
        GetPresignedObjectUrlArgs args = GetPresignedObjectUrlArgs.builder().expiry(expires).bucket(bucketName).object(objectName).build();
        return minioClient.getPresignedObjectUrl(args);
    }

    /**
     * 获得文件外链
     * @param bucketName
     * @param objectName
     * @return url
     * @throws Exception
     */
    public String getPresignedObjectUrl(String bucketName, String objectName) throws Exception {
        GetPresignedObjectUrlArgs args = GetPresignedObjectUrlArgs.builder()
                .bucket(bucketName)
                .object(objectName)
                .method(Method.GET).build();
        return minioClient.getPresignedObjectUrl(args);
    }

    /**
     * 将URLDecoder编码转成UTF8
     * @param str
     * @return
     * @throws UnsupportedEncodingException
     */
    public String getUtf8ByURLDecoder(String str) throws UnsupportedEncodingException {
        String url = str.replaceAll("%(?![0-9a-fA-F]{2})", "%25");
        return URLDecoder.decode(url, "UTF-8");
    }

    /******************************  Operate Files End  ******************************/

}

5 调用，测试

import io.minio.ObjectWriteResponse;
import io.minio.messages.Bucket;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.*;
import org.springframework.web.multipart.MultipartFile;
import java.util.List;
import java.util.stream.Collectors;

@RestController
@RequestMapping("/minio")
@Slf4j
public class MinioController {

    @Autowired
    private MinIoUtil minioUtil;

    @Autowired
    private MinioProperties minioProperties;

    /**
     * 创建存储桶
     * @param bucketName
     * @return
     */
    @GetMapping("/createBucket")
    public String createBucket(@RequestParam String bucketName) {
        try {
            minioUtil.createBucket(bucketName);
            return "存储桶 '" + bucketName + "' 创建成功。";
        } catch (Exception e) {
            log.error("创建存储桶失败：{}", e.getMessage());
            return "创建存储桶失败：" + e.getMessage();
        }
    }

    /**
     * 检查存储桶是否存在
     * @param bucketName
     * @return
     */
    @GetMapping("/bucketExists")
    public String bucketExists(@RequestParam String bucketName) {
        try {
            boolean exists = minioUtil.bucketExists(bucketName);
            if (exists) {
                return "存储桶 '" + bucketName + "' 存在。";
            } else {
                return "存储桶 '" + bucketName + "' 不存在。";
            }
        } catch (Exception e) {
            log.error("检查存储桶是否存在失败：{}", e.getMessage());
            return "检查存储桶是否存在失败：" + e.getMessage();
        }
    }

    /**
     * 获取所有存储桶列表
     * @return
     */
    @GetMapping("/getAllBuckets")
    public List<String> getAllBuckets() {
        try {
            List<Bucket> buckets = minioUtil.getAllBuckets();
            return buckets.stream().map(Bucket::name).collect(Collectors.toList());
        } catch (Exception e) {
            log.error("获取所有存储桶列表失败：{}", e.getMessage());
            return null;
        }
    }

    /**
     * 删除存储桶
     * @param bucketName
     * @return
     */
    @DeleteMapping("/removeBucket")
    public String removeBucket(@RequestParam String bucketName) {
        try {
            minioUtil.removeBucket(bucketName);
            return "存储桶 '" + bucketName + "' 删除成功。";
        } catch (Exception e) {
            log.error("删除存储桶失败：{}", e.getMessage());
            return "删除存储桶失败：" + e.getMessage();
        }
    }

    /**
     * 文件上传
     * @param multipartFile
     * @return
     */
    @PostMapping("/upload")
    public String uploadFile(@RequestParam("file") MultipartFile multipartFile) {

        try {
            String bucketName = minioProperties.getBucketName();
            String fileName = multipartFile.getOriginalFilename();
            minioUtil.uploadFile(bucketName, multipartFile, fileName, "multipart/form-data");
            String url = minioUtil.getBasisUrl() + fileName;
            log.info("文件 '{}' 上传成功，URL: {}", fileName, url);
            return "文件 '" + fileName + "' 上传成功，URL: " + url;
        } catch (Exception e) {
            log.error("文件上传失败：{}", e.getMessage());
            return "文件上传失败：" + e.getMessage();
        }
    }

    /**
     * 检查文件是否存在
     * @param bucketName
     * @param objectName
     * @return
     */
    @GetMapping("/isObjectExist")
    public String isObjectExist(@RequestParam String bucketName, @RequestParam String objectName) {
        boolean exists = false;
        try {
            exists = minioUtil.isObjectExist(bucketName, objectName);
            if (exists) {
                return "对象 '" + objectName + "' 在存储桶 '" + bucketName + "' 中存在。";
            } else {
                return "对象 '" + objectName + "' 在存储桶 '" + bucketName + "' 中不存在。";
            }
        } catch (Exception e) {
            log.error("检查文件是否存在失败：{}", e.getMessage());
            return "检查文件是否存在失败：" + e.getMessage();
        }
    }

    /**
     * 创建文件夹或目录
     * @param bucketName
     * @param objectName
     * @return
     */
    @PostMapping("/createDir")
    public String createDir(@RequestParam String bucketName, @RequestParam String objectName) {
        try {
            ObjectWriteResponse response = minioUtil.createDir(bucketName, objectName);
            log.info("目录 '{}' 在存储桶 '{}' 中创建成功。", objectName, bucketName);
            return "目录 '" + objectName + "' 在存储桶 '" + bucketName + "' 中创建成功。";
        } catch (Exception e) {
            log.error("创建目录失败：{}", e.getMessage());
            return "创建目录失败：" + e.getMessage();
        }
    }

    /**
     * 删除文件
     * @param bucketName
     * @param objectName
     * @return
     */
    @DeleteMapping("/removeFile")
    public String removeFile(@RequestParam String bucketName, @RequestParam String objectName) {
        try {
            minioUtil.removeFile(bucketName, objectName);
            log.info("文件 '{}' 在存储桶 '{}' 中删除成功。", objectName, bucketName);
            return "文件 '" + objectName + "' 在存储桶 '" + bucketName + "' 中删除成功。";
        } catch (Exception e) {
            log.error("删除文件失败：{}", e.getMessage());
            return "删除文件失败：" + e.getMessage();
        }
    }

    /**
     * 获取文件外链
     * @param bucketName
     * @param objectName
     * @return
     */
    @GetMapping("/getPresignedObjectUrl")
    public String getPresignedObjectUrl(@RequestParam String bucketName, @RequestParam String objectName) {
        try {
            String url = minioUtil.getPresignedObjectUrl(bucketName, objectName);
            log.info("文件 '{}' 在存储桶 '{}' 的外链为：{}", objectName, bucketName, url);
            return "文件 '" + objectName + "' 在存储桶 '" + bucketName + "' 的外链为：" + url;
        } catch (Exception e) {
            log.error("获取文件外链失败：{}", e.getMessage());
            return "获取文件外链失败：" + e.getMessage();
        }
    }

}

参考博文
https://www.cnblogs.com/zhangruifeng/p/16350067.html