docker安装minio

1、安装minio

docker pull minio/minio:RELEASE.2021-06-17T00-10-46Z
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2、后台运行minio

docker run -d -p 9000:9000 --name minio\
  -e "MINIO_ACCESS_KEY=admin" \
  -e "MINIO_SECRET_KEY=admin" \
  -v /usr/local/minio/data:/data \
  -v /usr/local/minio/config:/root/.minio \
  minio/minio:RELEASE.2021-06-17T00-10-46Z server /data
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3、基础方法

package com.example.radar.service.impl;

import com.example.config.MinioConfig;
import com.example.radar.service.MinioService;
import io.minio.MinioClient;
import io.minio.policy.PolicyType;
import org.apache.commons.io.IOUtils;
import org.apache.commons.lang3.StringUtils;
import org.springframework.stereotype.Service;
import org.springframework.web.multipart.MultipartFile;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.URLEncoder;
import java.util.HashMap;
import java.util.Map;
import java.util.UUID;

/**
 * @author ychao
 * @date 2021/6/19 20:00
 */
@Service("/minioService")
public class MinioServiceImpl implements MinioService {

    @Override
    public Map minioUpload(MultipartFile file, String dirPath) {
        Map<String, String> minioMap = new HashMap<>();
        String filename = file.getOriginalFilename();
        try {
            //创建一个MinIO的Java客户端
            MinioClient minioClient = new MinioClient(MinioConfig.ENDPOINT, MinioConfig.ACCESS_KEY, MinioConfig.SECRET_KEY);
            boolean isExist = minioClient.bucketExists(MinioConfig.BUCKET_NAME);
            //没有桶则创建
            if (!isExist) {
                //创建存储桶并设置只读权限
                minioClient.makeBucket(MinioConfig.BUCKET_NAME);
                minioClient.setBucketPolicy(MinioConfig.BUCKET_NAME, "*.*", PolicyType.READ_ONLY);
            }
            // 设置存储对象名称
            String uuid = UUID.randomUUID().toString().replaceAll("-", "").toUpperCase();
            String objectName = dirPath + "/" + uuid + "_" + filename;
            // 使用putObject上传一个文件到存储桶中
            minioClient.putObject(MinioConfig.BUCKET_NAME, objectName, file.getInputStream(), file.getContentType());
            minioMap.put("fileName", filename);
            minioMap.put("fileUrl", MinioConfig.ENDPOINT + "/" + MinioConfig.BUCKET_NAME + "/" + objectName);
        } catch (Exception e) {
            e.printStackTrace();
        }
        return minioMap;
    }

    @Override
    public void minioDownload(String fileUrl,String fileName,HttpServletResponse response) {
        OutputStream outputStream = null;
        InputStream inputStream = null;
        if (StringUtils.isBlank(fileUrl)) {
            response.setHeader("Content-type", "text/html;charset=UTF-8");
            System.out.println("fileUrl为null文件下载失败");
        }
        try {
            // 拿到文件路径
            String url = fileUrl.split("9000/")[1];
            // 获取文件对象
            inputStream = getMinioObjectInputStream(MinioConfig.BUCKET_NAME, url.substring(url.indexOf("/") + 1));
            response.reset();
            response.setHeader("Content-Disposition", "attachment;filename=" + URLEncoder.encode(fileName, "UTF-8"));
            response.setContentType("application/octet-stream");
            response.setCharacterEncoding("UTF-8");
            outputStream = response.getOutputStream();
            IOUtils.copy(inputStream, outputStream);

        } catch (Exception ex) {
            response.setHeader("Content-type", "text/html;charset=UTF-8");
            System.out.println("文件下载失败");
        } finally {
            try {
                if (null != outputStream) {
                    outputStream.close();
                }
                if (null != inputStream) {
                    inputStream.close();
                }
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    }

    /**
     * create by: ychao
     * description: 获取minio文件中的输入流
     * create time: 2021/6/19 22:51
     */
    public InputStream getMinioObjectInputStream(String bucketName, String objectName) {
        try {
            MinioClient minioClient = new MinioClient(MinioConfig.ENDPOINT, MinioConfig.ACCESS_KEY, MinioConfig.SECRET_KEY);
            return minioClient.getObject(bucketName, objectName);
        } catch (Exception e) {
            System.out.println("minio文件输入流获取失败");
        }
        return null;
    }
}

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