Spring Boot集成MinIO的详细步骤

1. 安装MinIO

使用Docker部署MinIO

1. 拉取MinIO镜像：

docker pull minio/minio

这将从Docker Hub中获取最新的MinIO镜像。

创建目录：

mkdir -p /home/minio/config
mkdir -p /home/minio/data

 这些目录将用于持久化MinIO的数据和配置文件

创建MinIO容器并运行： 

docker run -p 9000:9000 -p 9090:9090 \
    --net=host \
    --name minio \
    -d --restart=always \
    -e "MINIO_ACCESS_KEY=minioadmin" \
    -e "MINIO_SECRET_KEY=minioadmin" \
    -v /home/minio/data:/data \
    -v /home/minio/config:/root/.minio \
    minio/minio server /data --console-address ":9090" -address ":9000"

1. 这将启动MinIO服务，使其可以通过主机的9000端口和9090端口进行访问。

2. 登录MinIO控制台： 安装完成后，通过浏览器访问MinIO控制台，默认地址为 http://localhost:9000，使用设置的访问密钥和秘密密钥进行登录。

2. Spring Boot集成MinIO

添加依赖

在pom.xml中添加以下依赖：

<dependency>
    <groupId>io.minio</groupId>
    <artifactId>minio</artifactId>
    <version>8.5.2</version>
</dependency>

配置MinIO

在application.properties中添加MinIO的配置：

minio.host=http://localhost:9000
minio.access-key=minioadmin
minio.secret-key=minioadmin
minio.bucket=test-bucket

创建MinIO配置类 

import io.minio.MinioClient;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

@Configuration
public class MinioConfig {

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

    @Value("${minio.access-key}")
    private String accessKey;

    @Value("${minio.secret-key}")
    private String secretKey;

    @Bean
    public MinioClient minioClient() {
        return MinioClient.builder()
                .endpoint(host)
                .credentials(accessKey, secretKey)
                .build();
    }
}

创建存储桶 

import io.minio.MinioClient;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

@Service
public class MinioService {

    @Autowired
    private MinioClient minioClient;

    public void createBucket(String bucketName) {
        if (!minioClient.bucketExists(b -> b.bucket(bucketName))) {
            minioClient.makeBucket(m -> m.bucket(bucketName));
        }
    }
}

文件上传 

import io.minio.MinioClient;
import io.minio.PutObjectResponse;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.web.multipart.MultipartFile;

import java.io.InputStream;

@Service
public class FileUploadService {

    @Autowired
    private MinioClient minioClient;

    public String uploadFile(MultipartFile file, String bucketName, String objectName) throws Exception {
        try (InputStream inputStream = file.getInputStream()) {
            PutObjectResponse response = minioClient.putObject(
                    PutObjectArgs.builder()
                            .bucket(bucketName)
                            .object(objectName)
                            .stream(inputStream, file.getSize(), -1)
                            .contentType(file.getContentType())
                            .build()
            );
            return "http://localhost:9000/" + bucketName + "/" + objectName;
        }
    }
}

文件下载 

import io.minio.MinioClient;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;

import javax.servlet.http.HttpServletResponse;
import java.io.InputStream;

@RestController
public class FileDownloadController {

    @Autowired
    private MinioClient minioClient;

    @GetMapping("/download")
    public void downloadFile(@RequestParam String bucketName, @RequestParam String objectName, HttpServletResponse response) {
        try {
            InputStream stream = minioClient.getObject(
                    GetObjectArgs.builder()
                            .bucket(bucketName)
                            .object(objectName)
                            .build()
            );
            response.setContentType("application/octet-stream");
            response.setHeader("Content-Disposition", "attachment; filename=" + objectName);
            stream.transferTo(response.getOutputStream());
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}

通过以上步骤，你可以在Spring Boot中成功集成并使用MinIO进行文件存储和管理。