spring boot 整合 minio存储【使用篇】

zi导入依赖

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

yml配置（默认配置）

spring:
  # 配置文件上传大小限制
  servlet:
    multipart:
      max-file-size: 200MB
      max-request-size: 200MB
minio:
  endpoint: http://127.0.0.1:9000
  accessKey: minioadmin
  secretKey: minioadmin
  bucketName: bucket-qhj

一一对应

补充：由于每次启动minio.exe要进入对应目录，很麻烦，所以可以写个批处理文件.bat

D: 代表进入D盘

cd D:\Program Files\minio 代表进入你minio.exe存放的根目录

minio.exe server D:\MineFile\zuoye\xm\minioFile --console-address ":9999" 在D:\MineFile\zuoye\xm\minioFile文件夹执行，并且增加额外端口’9999‘

@echo off
echo.
echo [信息] 运行MinIO文服务器。
echo.
 
title minio
 
D:
cd D:\Program Files\minio
 
minio.exe server D:\MineFile\zuoye\xm\minioFile --console-address ":9999"
pause

配置类

注入客户端配置放入bean

使用value注解装配yml配置文件中的值

@Data
@Component
public class MinIoClientConfig {
    @Value("${minio.endpoint}")
    private String endpoint;
    @Value("${minio.accessKey}")
    private String accessKey;
    @Value("${minio.secretKey}")
    private String secretKey;

    /**
     * 注入minio 客户端
     * @return
     */
    @Bean
    public MinioClient minioClient(){

        return MinioClient.builder()
                .endpoint(endpoint)
                .credentials(accessKey, secretKey)
                .build();
    }

}

实体类

@Data
public class ObjectItem {
    private String objectName;
    private Long size;
}

工具类

根据实体类

/**
 * @description： minio工具类
 * @version：3.0
 */
@Component
public class MinioUtilS {
    @Autowired
    private MinioClient minioClient;

    @Value("${minio.bucketName}")
    private String bucketName;
    /**
     * description: 判断bucket是否存在，不存在则创建
     *
     * @return: void
     */
    public void existBucket(String name) {
        try {
            boolean exists = minioClient.bucketExists(BucketExistsArgs.builder().bucket(name).build());
            if (!exists) {
                minioClient.makeBucket(MakeBucketArgs.builder().bucket(name).build());
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    /**
     * 创建存储bucket
     * @param bucketName 存储bucket名称
     * @return Boolean
     */
    public Boolean makeBucket(String bucketName) {
        try {
            minioClient.makeBucket(MakeBucketArgs.builder()
                    .bucket(bucketName)
                    .build());
        } catch (Exception e) {
            e.printStackTrace();
            return false;
        }
        return true;
    }

    /**
     * 删除存储bucket
     * @param bucketName 存储bucket名称
     * @return Boolean
     */
    public Boolean removeBucket(String bucketName) {
        try {
            minioClient.removeBucket(RemoveBucketArgs.builder()
                    .bucket(bucketName)
                    .build());
        } catch (Exception e) {
            e.printStackTrace();
            return false;
        }
        return true;
    }
    /**
     * description: 上传文件
     *
     * @param multipartFile
     * @return: java.lang.String

     */
    public List<String> upload(MultipartFile[] multipartFile) {
        List<String> names = new ArrayList<>(multipartFile.length);
        for (MultipartFile file : multipartFile) {
            String fileName = file.getOriginalFilename();
            String[] split = fileName.split("\\.");
            if (split.length > 1) {
                fileName = split[0] + "_" + System.currentTimeMillis() + "." + split[1];
            } else {
                fileName = fileName + System.currentTimeMillis();
            }
            InputStream in = null;
            try {
                in = file.getInputStream();
                minioClient.putObject(PutObjectArgs.builder()
                        .bucket(bucketName)
                        .object(fileName)
                        .stream(in, in.available(), -1)
                        .contentType(file.getContentType())
                        .build()
                );
            } catch (Exception e) {
                e.printStackTrace();
            } finally {
                if (in != null) {
                    try {
                        in.close();
                    } catch (IOException e) {
                        e.printStackTrace();
                    }
                }
            }
            names.add(fileName);
        }
        return names;
    }

    /**
     * description: 下载文件
     *
     * @param fileName
     * @return: org.springframework.http.ResponseEntity<byte [ ]>
     */
    public ResponseEntity<byte[]> download(String fileName) {
        ResponseEntity<byte[]> responseEntity = null;
        InputStream in = null;
        ByteArrayOutputStream out = null;
        try {
            in = minioClient.getObject(GetObjectArgs.builder().bucket(bucketName).object(fileName).build());
            out = new ByteArrayOutputStream();
            IOUtils.copy(in, out);
            //封装返回值
            byte[] bytes = out.toByteArray();
            HttpHeaders headers = new HttpHeaders();
            try {
                headers.add("Content-Disposition", "attachment;filename=" + URLEncoder.encode(fileName, "UTF-8"));
            } catch (UnsupportedEncodingException e) {
                e.printStackTrace();
            }
            headers.setContentLength(bytes.length);
            headers.setContentType(MediaType.APPLICATION_OCTET_STREAM);
            headers.setAccessControlExposeHeaders(Arrays.asList("*"));
            responseEntity = new ResponseEntity<byte[]>(bytes, headers, HttpStatus.OK);
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            try {
                if (in != null) {
                    try {
                        in.close();
                    } catch (IOException e) {
                        e.printStackTrace();
                    }
                }
                if (out != null) {
                    out.close();
                }
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
        return responseEntity;
    }

    /**
     * 查看文件对象
     * @param bucketName 存储bucket名称
     * @return 存储bucket内文件对象信息
     */
    public List<ObjectItem> listObjects(String bucketName) {
        Iterable<Result<Item>> results = minioClient.listObjects(
                ListObjectsArgs.builder().bucket(bucketName).build());
        List<ObjectItem> objectItems = new ArrayList<>();
        try {
            for (Result<Item> result : results) {
                Item item = result.get();
                ObjectItem objectItem = new ObjectItem();
                objectItem.setObjectName(item.objectName());
                objectItem.setSize(item.size());
                objectItems.add(objectItem);
            }
        } catch (Exception e) {
            e.printStackTrace();
            return null;
        }
        return objectItems;
    }

    /**
     * 批量删除文件对象
     * @param bucketName 存储bucket名称
     * @param objects 对象名称集合
     */
    public Iterable<Result<DeleteError>> removeObjects(String bucketName, List<String> objects) {
        List<DeleteObject> dos = objects.stream().map(e -> new DeleteObject(e)).collect(Collectors.toList());
        Iterable<Result<DeleteError>> results = minioClient.removeObjects(RemoveObjectsArgs.builder().bucket(bucketName).objects(dos).build());
        return results;
    }
}

控制器类

返回可访问的url

@RestController
@Slf4j
@RequestMapping("/fileSave")
public class MinioController {
    @Autowired
    private MinIoUtil minIoUtil;
    @Autowired
    private MinioUtilS minioUtilS;
    @Value("${minio.endpoint}")
    private String address;
    @Value("${minio.bucketName}")
    private String bucketName;

    @RequestMapping("/fileInMinio")
    public R uploadInMinio(MultipartFile file) {
        List<String> upload = minioUtils.upload(new MultipartFile[]{file});
        String url = address + "/" + bucketName + "/" + upload.get(0);
        return R.ok().put("filePath", url);
    }

}

上传后获取链接为

访问报错

解决方式

来到minio控制台

打开你正在使用的bucket

修改访问权限为public就行

重新访问链接，应该就能查看

前端代码

通过父组件导入子组件，注册子组件，引用子组件弹出

父组件调用方法

    // 文件导入
    importExcel () {
      this.uploadFileVisible = true
      this.$nextTick(() => {
        this.$refs.uploadFile.init()
      })
    }

子组件vue页面

<template>
  <el-dialog
    title="维修处理"
    :close-on-click-modal="true"
    :visible.sync="visible"
  >
    <el-select
      size="small"
      v-model="uploadMethodValue"
      placeholder="请选择上传方式"
      clearable=""
      filterable
    >
      <el-option
        v-for="d in uploadMethod"
        :key="d.value"
        :label="d.name"
        :value="d.value"
      ></el-option>
    </el-select>

    <el-upload
      class="upload-demo"
      ref="upload"
      drag
      action="#"
      :on-change="handleChangeSelect"
      :on-exceed="handleExceed"
      :file-list="fileList"
      :limit="1"
      multiple
      :auto-upload="false"
    >
      <i class="el-icon-upload"></i>
      <div class="el-upload__text">将文件拖到此处，或<em>点击上传</em></div>
      <div
        class="el-upload__tip"
        slot="tip"
      >只能上传jpg/png文件，且不超过500kb</div>
      <div
        class="el-upload__tip"
        slot="tip"
      >访问路径：{{ filePath }}</div>
    </el-upload>
  </el-dialog>
</template>
    
    <script>
export default {
  data () {
    return {
      // 对话框显示状态
      visible: false,
      uploadMethod: [
        { name: '本地存储', value: '1' },
        { name: 'oss存储', value: '2' },
        { name: 'miniio', value: '3' }
      ],
      // 选中的上传方式
      uploadMethodValue: '',
      // 表单数据
      dataForm: {
      },
      filePath: '',
      fileList: []
    }
  },
  methods: {
    // 初始化方法
    init () {
      this.visible = true
      this.filePath = ''
    },
    // 文件超出个数提示
    handleExceed (files, fileList) {
      this.$message.warning(`当前限制选择 1 个文件，本次选择了 ${files.length} 个文件，共选择了 ${files.length + fileList.length} 个文件`)
    },
    handleChangeSelect (file) {
      if (this.uploadMethodValue === '1') {
        // 本地存储
        this.handleChange(file, '/fileSave/file')
      } else if (this.uploadMethodValue === '2') {
        // oss存储
        this.handleChange(file, '/fileSave/fileInOSS')
      } else if (this.uploadMethodValue === '3') {
        // miniio
        this.handleChange(file, '/fileSave/fileInMinio')
      }
    },
    handleChange (file, urlSelect) {
      let formData = new FormData()
      formData.append('file', file.raw) // 传文件
      this.$http({
        url: this.$http.adornUrl(urlSelect),
        method: 'post',
        data: formData,
        headers: {
          'Content-Type': 'multipart/form-data'
        }
      }).then(({ data }) => {
        if (data && data.code === 0) {
          this.filePath = data.filePath
          this.$message({
            message: '操作成功',
            type: 'success',
            duration: 1500
          })
        } else {
          this.$message.error(data.msg)
        }
        this.$refs.upload.clearFiles() // 清除文件
      })
    }
  }
}
  </script>

拓展学习

MultipartFile

MultipartFile为org.springframework.web.mutipart包下的一个类，也就是说如果想使用MultipartFile这个类就必须引入spring框架，换句话说，如果想在项目中使用MultipartFile这个类，那么项目必须要使用spring框架才可以，否则无法引入这个类。

一般来讲使用MultipartFile这个类主要是来实现以表单的形式进行文件上传功能。