How SpringBoot integrates Minio file storage

Background

The company's development framework integrates attachment local storage, Alibaba Cloud, Huawei Cloud, etc. The current project requires that attachment storage and application deployment environment cannot be on the same server, nor can cloud storage be used. After After technology selection, it is decided to integrate minio into the framework, and the problem can be solved by deploying minio on another server and opening the external network port

Minio installation and deployment

Download the minio installation and deployment package and create the corresponding configuration file , here is an integrated compressed package

Download address: http://xiazai.jb51.net/202204/yuanma/minio_jb51.rar

Create the minioData folder as the file storage path, Unzip the installation package and modify the corresponding configuration files according to the placement path

minio-service.xml and run.bat

<service>
  <id>minio</id>
  <name>MinIO Service</name>
  <description>MinIO is a High Performance Object Storage</description>
  <logpath>D:\minio\logs</logpath>
  <log mode="roll-by-size">
    <sizeThreshold>10240</sizeThreshold>
    <keepFiles>8</keepFiles>
  </log>
  <executable>D:\minio\run.bat</executable>
</service>

set MINIO_ACCESS_KEY=admin
set MINIO_SECRET_KEY=abcd@1234
minio.exe server -address :9999 D:\minioData

After decompressing the deployment package, enter the corresponding decompression path with cmd and enter the command minio.exe server D :\minioData Close the cmd command after initialization

Use the service installation tool to install the service, select minio-service.exe

Windows service installation tool download address: http://xiazai.jb51.net/ 202204/yuanma/windowsfuwu_jb51.rar

After starting the service, visit http://127.0.0.1:9999/

User name: admin Password: abcd@1234 (the port and account password are both in configured in the run.bat file)

Enter the system to create a bucket for storing files (similar to Alibaba Cloud)

Configure pom file--h3>

  <dependency>
            <groupId>io.minio</groupId>
            <artifactId>minio</artifactId>
            <version>7.1.0</version>
        </dependency>

Configure yml file

The upload/download address configured here is a formal project. It may be that after configuring the external network port, the corresponding external network port cannot be accessed in the server. Uploading goes to the intranet and downloading goes External network

#minio配置
  # 上传地址
  minio_uploadurl: http://192.168.1.42:9999/
  # 下载地址
  minio_downloadurl: http://192.168.1.42:9999/
  # 账户
  minio_accesskey: admin
  # 密码
  minio_secrectkey: abcd@1234
  # 存储文件夹
  minio_bucknetname: xxx

Minio tool class

Initialize client

public MinioClient InitMinio() {
        MinioClient minioClient = MinioClient.builder().
        endpoint(frameConfig.getMinio_uploadurl()).       		        credentials(frameConfig.getMinio_accesskey(),frameConfig.getMinio_secrectkey()).build();
        try{
            boolean isExist = minioClient.bucketExists(frameConfig.getMinio_bucknetname());
            if (!isExist) {
                minioClient.makeBucket(frameConfig.getMinio_bucknetname());
            }
        }catch (Exception e){
            e.printStackTrace();
        }
        return minioClient;
    }

Upload files

The getkey method just specifies the corresponding custom storage path

Specify content-type so that when the browser can open attachments, pictures, PDFs and other files can be browsed online

If not specified, the default is stream, and opening files will be downloaded

 public boolean uploadMinioFile(InputStream stream, AttachmentDO attachmentDO,String contentType){
        boolean result = true;
        try{
            MinioClient minioClient = InitMinio();
            String bucketName =frameConfig.getMinio_bucknetname();
            PutObjectOptions option = new PutObjectOptions(stream.available(), -1);
            option.setContentType(contentType);
            minioClient.putObject(bucketName,getKey(attachmentDO),stream,option);
        }catch (Exception e){
            logger.error("Minio上传文件失败:" + e.getMessage());
            result = false;
        }
        return result;
    }

Download files

It should be noted that the generated file download address is bound to the server address specified in MinioClient, and is invalid after using nginx proxy

 public  String readMinioCommonFile(AttachmentDO attachmentDO){
        String fileurl = "";
        try{
            MinioClient minioClient = InitMinio();
            String bucketName =frameConfig.getMinio_bucknetname();
            return minioClient.presignedGetObject(bucketName, getKey(attachmentDO));
        }catch (Exception e){
            logger.error("Minio读取文件失败:" + e.getMessage());
        }
        return fileurl;
    }

Delete file

 public  boolean deleteMinioFile(AttachmentDO attachmentDO){
        boolean result = true;
        try{
            MinioClient minioClient = InitMinio();
            String bucketName =frameConfig.getMinio_bucknetname();
            minioClient.removeObject(bucketName,getKey(attachmentDO));
        }catch (Exception e){
            logger.error("Minio删除文件失败:" + e.getMessage());
            result = false;
        }
        return result;
    }

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