前言:本文章只做整合相关内容 至于前期服务器搭建网上有很多详细方法 这里不再赘述

1.yml文件配置

#文件服务器  
minio:
  url: http://192.168.1.***:9000  服务器ip
  access-key: minioadmin  账号
  secret-key: minioadmin  密码
  bucket-name: test  桶名称

2.在RuoYi通用请求类CommonController里调用

    /** 获取yml配置类里的桶名称*/
    @Value("${minio.bucket-name}")
    private String bucketName;

 /** 自定义上传Minio服务器方法*/
 @PostMapping("/common/uploadMinio")
    public AjaxResult uploadFileMinio(MultipartFile file) throws Exception
    {
        try
        {
            // 调用上传工具类定义方法,并返回路径名称
        	String fileName = FileUploadUtils.uploadMinio(file,this.bucketName);
            AjaxResult ajax = AjaxResult.success();
            ajax.put("fileName", fileName);
            return ajax;
        }
        catch (Exception e)
        {
            return AjaxResult.error(e.getMessage());
        }
    }

3.在RuYi上传工具类FileUploadUtils里添加Minio上传方法

  /** 上传到Minio服务器*/
  public static final String uploadMinio(MultipartFile file,String Name) throws IOException
    {
        try
        { 
        	String bucketName= Name;
            return uploadMinino(bucketName,file, MimeTypeUtils.DEFAULT_ALLOWED_EXTENSION);
        }
        catch (Exception e)
        {
            throw new IOException(e.getMessage(), e);
        }
    }

4.上传前检验方法

/** 上传前校验方法*/
private static final String uploadMinino(String bucketName, MultipartFile file, String[] allowedExtension)
    		 throws FileSizeLimitExceededException, IOException, FileNameLengthLimitExceededException,
             InvalidExtensionException
    {
        int fileNamelength = file.getOriginalFilename().length();
        if (fileNamelength > FileUploadUtils.DEFAULT_FILE_NAME_LENGTH)
        {
            throw new FileNameLengthLimitExceededException(FileUploadUtils.DEFAULT_FILE_NAME_LENGTH);
        }

        assertAllowed(file, allowedExtension);
        try {
    	String fileName = extractFilename(file);
    	//调用自定义MinioUtil类方法
    	String pathFileName =  MinioUtil.uploadFile(bucketName, fileName, file);
    	return pathFileName;
        } catch (Exception e){
        	e.printStackTrace();
        }
        return "";
        
    }

4.自定义MinioUtil工具类被文件上传时调用

/** 初始化了连接方法,及桶权限获取*/
public class MinioUtil {
    /**
     * @param bucketName 桶名称
     * @param fileName
     * @throws IOException 
     */
	public static String uploadFile(String bucketName,String fileName,MultipartFile multipartFile) throws IOException
	{
		String url = "";
		MinioClient minioClient = SpringUtils.getBean(MinioClient.class);
		try (InputStream inputStream = multipartFile.getInputStream()) {
			boolean found = minioClient.bucketExists(BucketExistsArgs.builder().bucket(bucketName).build());
			if (!found)
			{
				minioClient.makeBucket(MakeBucketArgs.builder().bucket(bucketName).build());
				  /**
			     * bucket权限-读写
			     */
			    String READ_WRITE = "{\"Version\":\"2012-10-17\",\"Statement\":[{\"Effect\":\"Allow\",\"Principal\":{\"AWS\":[\"*\"]},\"Action\":[\"s3:GetBucketLocation\",\"s3:ListBucket\",\"s3:ListBucketMultipartUploads\"],\"Resource\":[\"arn:aws:s3:::" + bucketName + "\"]},{\"Effect\":\"Allow\",\"Principal\":{\"AWS\":[\"*\"]},\"Action\":[\"s3:DeleteObject\",\"s3:GetObject\",\"s3:ListMultipartUploadParts\",\"s3:PutObject\",\"s3:AbortMultipartUpload\"],\"Resource\":[\"arn:aws:s3:::" + bucketName + "/*\"]}]}";
				minioClient.setBucketPolicy(SetBucketPolicyArgs.builder().bucket(bucketName).config(READ_WRITE).build());
			}
			minioClient.putObject(PutObjectArgs.builder().bucket(bucketName)
                    .object(fileName)
                    .stream(inputStream, multipartFile.getSize(), -1)
                    .contentType(multipartFile.getContentType()).build()
            );
			 //路径获取
             url = minioClient.getPresignedObjectUrl(GetPresignedObjectUrlArgs.builder().bucket(bucketName).object(fileName).
                    method(Method.GET).build());
             url = url.substring(0,url.indexOf('?'));
            //常规访问路径获取
            return url;
		} catch (Exception e) {
			throw new IOException(e.getMessage(), e);
		}
	}
}

5.前端在组件里指定action方法

   //上传组件 指定action
   <el-upload v-model="form.fileurl"
                     class="upload-demo"
                     :action="field101Action"
                     :on-success="handleUploadSuccess"
                     :on-error="handleUploadError"
                     :file-list="fileurlList"
                      multiple
                     :limit="1"
                     :headers="headers"
                     :on-remove="handleRemove">
            <!-- 上传按钮 -->
            <el-button size="mini"
                       type="primary">点击上传</el-button>
          </el-upload>

6.指定后端通用请求路径
(这里只需要在RuoYi前端调用后端公共类方法时,换成自己定义的方法即可,不在指向本地路径)

7.上传成功回调
(由于返回的filename格式为服务器名称+日期+文件名
例如:http://192.168.1.***:9000/test/2022/04/12/11shh6h4gmqt0j4prfo3vfmn7e.docx
可根据情况进行截取字符串保存到数据库
这里截取的是000后边的内容 即:/test/2022/04/12/11shh6h4gmqt0j4prfo3vfmn7e.docx
访问时可通过后端读取的Minio服务器名称拼接即可
)

8.下载
(指定url即可,这里采取的是后端返回的服务器ip+字段名称
例如:http://192.168.1.***:9000 + /test/2022/04/12/11shh6h4gmqt0j4prfo3vfmn7e.docx
最后就形成了访问链接,同理图片预览也是一样,
)

注:如出现无法上传的问题,请先确定桶是否开启了public权限