spring boot集成minio，最新版

作者: 归来_仍是少年 | 来源:发表于2020-12-11 22:17 被阅读0次

demo地址：https://github.com/songshijun1995/minio-demo

使用docker安装minio

docker run -d -p 9000:9000 -e "MINIO_ACCESS_KEY=admin" -e "MINIO_SECRET_KEY=12345678" -v /storage/data:/data -v /storage/config:/root/.minio --restart=always minio/minio server /data

启动成功后浏览器访问ip:9000

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如果配置nginx代理了ip和端口号可以直接访问域名加/minio

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进入后点击右下角的+，创建一个桶

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然后修改桶的权限为读写（点击三个点，然后选择Edit policy）

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image.png
没安装过docker的可以看我以前的文章，详见

直接用spring boot官方脚手架创建项目，引入依赖

<dependency>
    <groupId>io.minio</groupId>
    <artifactId>minio</artifactId>
    <version>8.0.3</version>
</dependency>

<dependency>
    <groupId>org.apache.commons</groupId>
    <artifactId>commons-lang3</artifactId>
</dependency>
<dependency>
    <groupId>commons-io</groupId>
    <artifactId>commons-io</artifactId>
    <version>2.6</version>
</dependency>
<dependency>
    <groupId>commons-fileupload</groupId>
    <artifactId>commons-fileupload</artifactId>
    <version>1.4</version>
</dependency>

配置yml

server:
  port: 8080
  servlet:
    context-path: /

spring:
  application:
    name: minio-demo

minio:
  endpoint: http://129.28.158.207:9000
  accessKey: admin
  secretKey: 12345678
  filHost: http://file.songshijun.top

logging:
  level:
    ROOT: info
    com.minio: debug
  pattern:
    file: '%d{yyyy-MM-dd HH:mm:ss.SSS} %-5level [%thread] %logger{50} - %msg%n'
  file:
    name: ${logging.file.path}/${spring.application.name}.log
    path: /home/logs/${spring.application.name}
    max-size: 10MB
    max-history: 30

4.新建MinioProp类和MinioConfig类，分别加载minio账号密码以及初始MinioClient

package com.minio.config;

import lombok.Data;
import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.stereotype.Component;

@Data
@Component
@ConfigurationProperties(prefix = "minio")
public class MinioProp {
    /**
     * 连接地址
     */
    private String endpoint;
    /**
     * 用户名
     */
    private String accessKey;
    /**
     * 密码
     */
    private String secretKey;
    /**
     * 域名
     */
    private String filHost;
}

package com.minio.config;

import io.minio.MinioClient;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.context.properties.EnableConfigurationProperties;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

@Configuration
@EnableConfigurationProperties(MinioProp.class)
public class MinioConfig {

    @Autowired
    private MinioProp minioProp;

    /**
     * 获取MinioClient
     */
    @Bean
    public MinioClient minioClient() {
        return MinioClient.builder()
                        .endpoint(minioProp.getEndpoint())
                        .credentials(minioProp.getAccessKey(), minioProp.getSecretKey())
                        .build();
    }

}

package com.minio.dto.response;

import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;

@Data
@AllArgsConstructor
@NoArgsConstructor
public class FileUploadResponse {
    private String urlHttp;

    private String urlPath;
}

5.新建工具类MinioUtil，用来封装上传和删除文件等方法

package com.minio.utils;

import com.minio.config.MinioProp;
import com.minio.dto.response.FileUploadResponse;
import io.minio.*;
import io.minio.errors.*;
import io.minio.messages.Bucket;
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.IOException;
import java.io.InputStream;
import java.security.InvalidKeyException;
import java.security.NoSuchAlgorithmException;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.List;
import java.util.Optional;
import java.util.Random;

@Slf4j
@Component
public class MinioUtil {

    @Autowired
    private MinioProp minioProp;

    @Autowired
    private MinioClient client;

    /**
     * 创建bucket
     */
    public void createBucket(String bucketName) throws Exception {
        if (!client.bucketExists(BucketExistsArgs.builder().bucket(bucketName).build())) {
            client.makeBucket(MakeBucketArgs.builder().bucket(bucketName).build());
        }
    }

    /**
     * 上传文件
     */
    public FileUploadResponse uploadFile(MultipartFile file, String bucketName) throws Exception {
        //判断文件是否为空
        if (null == file || 0 == file.getSize()) {
            return null;
        }
        //判断存储桶是否存在  不存在则创建
        createBucket(bucketName);
        //文件名
        String originalFilename = file.getOriginalFilename();
        //新的文件名 = 存储桶文件名_时间戳.后缀名
        assert originalFilename != null;
        SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd");
        String fileName = bucketName + "_" +
                System.currentTimeMillis() + "_" + format.format(new Date()) + "_" + new Random().nextInt(1000) +
                originalFilename.substring(originalFilename.lastIndexOf("."));
        //开始上传
        client.putObject(
                PutObjectArgs.builder().bucket(bucketName).object(fileName).stream(
                        file.getInputStream(), file.getSize(), -1)
                        .contentType(file.getContentType())
                        .build());
        String url = minioProp.getEndpoint() + "/" + bucketName + "/" + fileName;
        String urlHost = minioProp.getFilHost() + "/" + bucketName + "/" + fileName;
        log.info("上传文件成功url ：[{}], urlHost ：[{}]", url, urlHost);
        return new FileUploadResponse(url, urlHost);
    }

    /**
     * 获取全部bucket
     *
     * @return
     */
    public List<Bucket> getAllBuckets() throws Exception {
        return client.listBuckets();
    }

    /**
     * 根据bucketName获取信息
     *
     * @param bucketName bucket名称
     */
    public Optional<Bucket> getBucket(String bucketName) throws IOException, InvalidKeyException, NoSuchAlgorithmException, InsufficientDataException, InvalidResponseException, InternalException, ErrorResponseException, ServerException, XmlParserException {
        return client.listBuckets().stream().filter(b -> b.name().equals(bucketName)).findFirst();
    }

    /**
     * 根据bucketName删除信息
     *
     * @param bucketName bucket名称
     */
    public void removeBucket(String bucketName) throws Exception {
        client.removeBucket(RemoveBucketArgs.builder().bucket(bucketName).build());
    }

    /**
     * 获取⽂件外链
     *
     * @param bucketName bucket名称
     * @param objectName ⽂件名称
     * @param expires    过期时间 <=7
     * @return url
     */
    public String getObjectURL(String bucketName, String objectName, Integer expires) throws Exception {
        return client.getPresignedObjectUrl(GetPresignedObjectUrlArgs.builder().bucket(bucketName).object(objectName).expiry(expires).build());
    }

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

    /**
     * 上传⽂件
     *
     * @param bucketName bucket名称
     * @param objectName ⽂件名称
     * @param stream     ⽂件流
     * @throws Exception https://docs.minio.io/cn/java-client-api-reference.html#putObject
     */
    public void putObject(String bucketName, String objectName, InputStream stream) throws
            Exception {
        client.putObject(PutObjectArgs.builder().bucket(bucketName).object(objectName).stream(stream, stream.available(), -1).contentType(objectName.substring(objectName.lastIndexOf("."))).build());
    }

    /**
     * 上传⽂件
     *
     * @param bucketName  bucket名称
     * @param objectName  ⽂件名称
     * @param stream      ⽂件流
     * @param size        ⼤⼩
     * @param contextType 类型
     * @throws Exception https://docs.minio.io/cn/java-client-api-reference.html#putObject
     */
    public void putObject(String bucketName, String objectName, InputStream stream, long
            size, String contextType) throws Exception {
        client.putObject(PutObjectArgs.builder().bucket(bucketName).object(objectName).stream(stream, size, -1).contentType(contextType).build());
    }

    /**
     * 获取⽂件信息
     *
     * @param bucketName bucket名称
     * @param objectName ⽂件名称
     * @throws Exception https://docs.minio.io/cn/java-client-api-reference.html#statObject
     */
    public StatObjectResponse getObjectInfo(String bucketName, String objectName) throws Exception {
        return client.statObject(StatObjectArgs.builder().bucket(bucketName).object(objectName).build());
    }

    /**
     * 删除⽂件
     *
     * @param bucketName bucket名称
     * @param objectName ⽂件名称
     * @throws Exception https://docs.minio.io/cn/java-client-apireference.html#removeObject
     */
    public void removeObject(String bucketName, String objectName) throws Exception {
        client.removeObject(RemoveObjectArgs.builder().bucket(bucketName).object(objectName).build());
    }
}

6.新建MinioController

package com.minio.controller;

import com.minio.dto.response.FileUploadResponse;
import com.minio.utils.MinioUtil;
import io.minio.errors.MinioException;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang3.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.http.HttpHeaders;
import org.springframework.http.HttpStatus;
import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.*;
import org.springframework.web.multipart.MultipartFile;

import javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServletResponse;
import java.io.ByteArrayOutputStream;
import java.io.InputStream;
import java.util.Arrays;

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

    @Autowired
    private MinioUtil minioUtil;

    /**
     * 上传文件
     */
    @PostMapping("/upload")
    public FileUploadResponse upload(@RequestParam(name = "file", required = false) MultipartFile file, @RequestParam(required = false) String bucketName) {
        FileUploadResponse response = null;
        if (StringUtils.isBlank(bucketName)) {
            bucketName = "salt";
        }
        try {
            response = minioUtil.uploadFile(file, bucketName);
        } catch (Exception e) {
            log.error("上传失败 : [{}]", Arrays.asList(e.getStackTrace()));
        }
        return response;
    }

    /**
     * 删除文件
     */
    @DeleteMapping("/delete/{objectName}")
    public void delete(@PathVariable("objectName") String objectName, @RequestParam(required = false) String bucketName) throws Exception {
        if (StringUtils.isBlank(bucketName)) {
            bucketName = "salt";
        }
        minioUtil.removeObject(bucketName, objectName);
        System.out.println("删除成功");
    }

    /**
     * 下载文件到本地
     */
    @GetMapping("/download/{objectName}")
    public ResponseEntity<byte[]> downloadToLocal(@PathVariable("objectName") String objectName, HttpServletResponse response) throws Exception {
        ResponseEntity<byte[]> responseEntity = null;
        InputStream stream = null;
        ByteArrayOutputStream output = null;
        try {
            // 获取"myobject"的输入流。
            stream = minioUtil.getObject("salt", objectName);
            if (stream == null) {
                System.out.println("文件不存在");
            }
            //用于转换byte
            output = new ByteArrayOutputStream();
            byte[] buffer = new byte[4096];
            int n = 0;
            while (-1 != (n = stream.read(buffer))) {
                output.write(buffer, 0, n);
            }
            byte[] bytes = output.toByteArray();

            //设置header
            HttpHeaders httpHeaders = new HttpHeaders();
            httpHeaders.add("Accept-Ranges", "bytes");
            httpHeaders.add("Content-Length", bytes.length + "");
//            objectName = new String(objectName.getBytes("UTF-8"), "ISO8859-1");
            //把文件名按UTF-8取出并按ISO8859-1编码，保证弹出窗口中的文件名中文不乱码，中文不要太多，最多支持17个中文，因为header有150个字节限制。
            httpHeaders.add("Content-disposition", "attachment; filename=" + objectName);
            httpHeaders.add("Content-Type", "text/plain;charset=utf-8");
//            httpHeaders.add("Content-Type", "image/jpeg");
            responseEntity = new ResponseEntity<byte[]>(bytes, httpHeaders, HttpStatus.CREATED);

        } catch (MinioException e) {
            e.printStackTrace();
        } finally {
            if (stream != null) {
                stream.close();
            }
            if (output != null) {
                output.close();
            }
        }
        return responseEntity;
    }

    /**
     * 在浏览器预览图片
     */
    @GetMapping("/preViewPicture/{objectName}")
    public void preViewPicture(@PathVariable("objectName") String objectName, HttpServletResponse response) throws Exception {
        response.setContentType("image/jpeg");
        try (ServletOutputStream out = response.getOutputStream()) {
            InputStream stream = minioUtil.getObject("salt", objectName);
            ByteArrayOutputStream output = new ByteArrayOutputStream();
            byte[] buffer = new byte[4096];
            int n = 0;
            while (-1 != (n = stream.read(buffer))) {
                output.write(buffer, 0, n);
            }
            byte[] bytes = output.toByteArray();
            out.write(bytes);
            out.flush();
        }
    }
}

7.启动项目用postman测试上传文件

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8.项目最新版集成swagger2，方便大家测试，可以看看README.md文件

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spring boot集成minio，最新版

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