springboot整合minio，实现文件上传与下载，且支持链接永久访问

springboot整合minio，实现文件上传与下载，且支持链接永久访问 1、minio部署 1.1 拉取镜像

docker pull minio/minio

1.2 创建数据目录

mkdir -p /home/guanz/minio
mkdir -p /home/guanz/minio/midata

1.3 启动minio

docker run -d -p 9000:9000 -p 9001:9001 --restart=always -e MINIO_ACCESS_KEY=guanz -e MINIO_SECRET_KEY=guanz@123 -v $PWD/midata:/data  minio/minio server /data --console-address "192.168.1.139:9001"

2、项目搭建 2.1 引入jar

        
            io.minio
            minio
            8.0.3
        

2.2 application-dev.yml

spring
    minio:
    # Minio服务器地址
    endpoint: http://192.168.1.139:9000
    port: 9001
    create-bucket: true
    bucketName: push-test
    # Minio服务器账号
    accessKey: guanz
    # Minio服务器密码
    secretKey: guanz@123
    secure: false
    configDir: /home/push
    # 文件大小 单位M
    maxFileSize: 10
    expires: 604800

2.4 MinioConfig.java

package com.pavis.app.saasbacken.config;

import io.minio.MinioClient;
import io.swagger.annotations.ApiModelProperty;
import lombok.Data;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.stereotype.Component;


@Data
@Component
@ConfigurationProperties(prefix = "minio")
@Slf4j
@Configuration
public class MinioConfig {
    @ApiModelProperty("endPoint是一个URL，域名，IPv4或者IPv6地址")
    @Value("${spring.minio.endpoint}")
    private String endpoint;

    @ApiModelProperty("TCP/IP端口号")
    @Value("${spring.minio.port}")
    private int port;

    @ApiModelProperty("accessKey类似于用户ID，用于唯一标识你的账户")
    @Value("${spring.minio.accessKey}")
    private String accessKey;

    @ApiModelProperty("secretKey是你账户的密码")
    @Value("${spring.minio.secretKey}")
    private String secretKey;

    @ApiModelProperty("如果是true，则用的是https而不是http,默认值是true")
    @Value("${spring.minio.secure}")
    private Boolean secure;

    @ApiModelProperty("默认存储桶")
    @Value("${spring.minio.bucketName}")
    private String bucketName;

    @ApiModelProperty("配置目录")
    @Value("${spring.minio.configDir}")
    private String configDir;

    @ApiModelProperty("文件大小")
    @Value("${spring.minio.maxFileSize}")
    private Integer maxFileSize;

    @ApiModelProperty("签名有效时间")
    @Value("${spring.minio.expires}")
    private Integer expires;

    
    @Bean
    public MinioClient minioClient(){
        log.info("endpoint:{},port:{},accessKey:{},secretKey:{},secure:{}",endpoint, port, accessKey, secretKey,secure);
        return MinioClient.builder()
                .endpoint(endpoint)
                .credentials(accessKey, secretKey)
                .build();
    }
}

3、文件上传 3.1 关键代码 MinioController.java

    @PostMapping("/upload")
    public Map upload(MultipartFile file){
        return minioService.upload(file);
    }

MinioServiceImpl.java

@Override
    public Map upload(MultipartFile file) {
        Map res = new HashMap<>();
        try {
            BucketExistsArgs bucketArgs = BucketExistsArgs.builder().bucket(bucketName).build();
            // todo 检查bucket是否存在。
            boolean found = minioClient.bucketExists(bucketArgs);

            PutObjectArgs objectArgs = PutObjectArgs.builder().object(file.getOriginalFilename())
                    .bucket(bucketName)
                    .contentType(file.getContentType())
                    .stream(file.getInputStream(), file.getSize(), -1).build();

            ObjectWriteResponse objectWriteResponse = minioClient.putObject(objectArgs);
            System.out.println(objectWriteResponse.etag());
            res.put("code", "1");
            res.put("mess", "ok");
            return res;
        } catch (Exception e) {
            e.printStackTrace();
            log.info(e.getMessage());
        }
        res.put("code", "0");
        return res;
    }

4、文件下载

@Override
    public void download(String filename, HttpServletResponse res) throws IOException, InvalidKeyException, InvalidResponseException, InsufficientDataException, NoSuchAlgorithmException, ServerException, InternalException, XmlParserException, ErrorResponseException {
        BucketExistsArgs bucketArgs = BucketExistsArgs.builder().bucket(bucketName).build();
        boolean bucketExists = minioClient.bucketExists(bucketArgs);
        log.info("bucketExists:{}", bucketExists);

        GetObjectArgs objectArgs = GetObjectArgs.builder().bucket(bucketName)
                .object(filename).build();
        System.err.println("objectArgs:" + JSON.toJSONString(objectArgs));
        try (GetObjectResponse response = minioClient.getObject(objectArgs)) {
            System.err.println("response:" + JSON.toJSONString(response));
            byte[] buf = new byte[1024];
            int len;
            try (FastByteArrayOutputStream os = new FastByteArrayOutputStream()) {
                while ((len = response.read(buf)) != -1) {
                    os.write(buf, 0, len);
                }
                os.flush();
                byte[] bytes = os.toByteArray();

                res.setCharacterEncoding("utf-8");
                res.setContentType("application/force-download");// 设置强制下载不打开
                res.addHeader("Content-Disposition", "attachment;fileName=" + filename);
                try (ServletOutputStream stream = res.getOutputStream()) {
                    stream.write(bytes);
                    stream.flush();
                }
            }

        } catch (Exception e) {
            e.printStackTrace();
        }
}

下载地址：

5、文件永久链接下载 5.1 配置

5.2 关键代码

   public String presignedGetObject(String bucketName, String objectName, Integer expires) throws IOException, InvalidKeyException, InvalidResponseException, InsufficientDataException, NoSuchAlgorithmException, ServerException, InternalException, XmlParserException, ErrorResponseException {
       BucketExistsArgs bucketArgs = BucketExistsArgs.builder().bucket(bucketName).build();
       boolean bucketExists = minioClient.bucketExists(bucketArgs);
       // boolean flag = bucketExists(bucketName);
       String url = "";
       if (bucketExists) {
           try {
               if (expires == null){
                   expires = 604800;
               }

               GetPresignedObjectUrlArgs getPresignedObjectUrlArgs = GetPresignedObjectUrlArgs.builder()
                       .method(Method.GET)
                       .bucket(bucketName)
                       .object(objectName)
                       // .expiry(expires)
                       .build();
               url = minioClient.getPresignedObjectUrl(getPresignedObjectUrlArgs);
               log.info("*******url2:{}",url);
           } catch (Exception e) {
               log.info("presigned get object fail:{}",e);
           }
       }
       return url;
   }

下载地址：

http://192.168.1.139:9000/push-test/qiyeku.jpg

至此，springboot+minio 结束。