使用minio实现文档对象存储

1、第一步安装好minio服务。启动界面如下图。安装请参考--https://blog.csdn.net/saygood999/article/details/105289358

当然你还可以选择阿里云的oss存储。免去了安装步骤。

2、编写后台上传服务代码

引入maven依赖
<dependency>
    <groupId>io.minio</groupId>
    <artifactId>minio</artifactId>
    <version>3.0.10</version>
</dependency>其他版本可以去maven仓库找https://mvnrepository.com/artifact/io.minio/minio

如果使用阿里云的oss。引入以下

<!-- 阿里云OSS -->
<dependency>
    <groupId>com.aliyun.oss</groupId>
    <artifactId>aliyun-sdk-oss</artifactId>
    <version>2.5.0</version>
</dependency>

@Api(tags = "MinioController1", description = "MinIO对象存储管理")
@Controller(value="appMinio")
@RequestMapping("/app/upload")
public class MinioController {

    private static final Logger LOGGER = LoggerFactory.getLogger(MinioController.class);
    @Value("${minio.endpoint}")
    private String ENDPOINT;
    @Value("${minio.bucketName}")
    private String BUCKET_NAME;
    @Value("${minio.accessKey}")
    private String ACCESS_KEY;
    @Value("${minio.secretKey}")
    private String SECRET_KEY;

    @Value("${minio.host}")
    private String HOST;

    @ApiOperation("文件上传")
    @RequestMapping(value = "/upload", method = RequestMethod.POST)
    @ResponseBody
    public CommonResult upload(@RequestParam("file") MultipartFile file) {
        try {
            //创建一个MinIO的Java客户端
            MinioClient minioClient = new MinioClient(ENDPOINT, ACCESS_KEY, SECRET_KEY);
            boolean isExist = minioClient.bucketExists(BUCKET_NAME);
            if (isExist) {
                LOGGER.info("存储桶已经存在！");
            } else {
                //创建存储桶并设置只读权限
                minioClient.makeBucket(BUCKET_NAME);
                minioClient.setBucketPolicy(BUCKET_NAME, "*.*", PolicyType.READ_ONLY);
            }
            String filename = file.getOriginalFilename();
            SimpleDateFormat sdf = new SimpleDateFormat("yyyyMMdd");
            // 设置存储对象名称
            String objectName = sdf.format(new Date()) + "/" + filename;
            // 使用putObject上传一个文件到存储桶中
            minioClient.putObject(BUCKET_NAME, objectName, file.getInputStream(), file.getContentType());
            LOGGER.info("文件上传成功!");
            MinioUploadDto minioUploadDto = new MinioUploadDto();
            minioUploadDto.setName(filename);
            minioUploadDto.setUrl(HOST + "/" + BUCKET_NAME + "/" + objectName);
            return CommonResult.success(minioUploadDto);
        } catch (Exception e) {
            e.printStackTrace();
            LOGGER.info("上传发生错误: {}！", e.getMessage());
        }
        return CommonResult.failed();
    }

    @ApiOperation("文件删除")
    @RequestMapping(value = "/delete", method = RequestMethod.POST)
    @ResponseBody
    public CommonResult delete(@RequestParam("objectName") String objectName) {
        try {
            MinioClient minioClient = new MinioClient(ENDPOINT, ACCESS_KEY, SECRET_KEY);
            minioClient.removeObject(BUCKET_NAME, objectName);
            return CommonResult.success(null);
        } catch (Exception e) {
            e.printStackTrace();
        }
        return CommonResult.failed();
    }
}

然后就大功告成了