springboot整合minio

1.添加依赖

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

2.添加配置

minio:
  endpoint: https://play.min.io # minio URL
  accessKey: Q3AM3UQ867SPQQA43P2F #账号
  secretKey: zuf+tfteSlswRu7BJ86wekitnifILbZam1KYY3TG #密码

3.添加属性类

package com.example.mall2.config;

import lombok.Data;
import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.context.annotation.Configuration;

/**
 * Author: zhangbicheng
 * Date: 2022/2/18
 */
@Configuration
@ConfigurationProperties(prefix = "minio")
@Data
public class MinioProperties {
    private String endpoint;
    private String accessKey;
    private String secretKey;
}

4.添加配置类

package com.example.mall2.config;

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

/**
 * Author: zhangbicheng
 * Date: 2022/2/18
 */
@Configuration
public class MinioConfig {
    @Autowired
    private MinioProperties minioProperties;

    @Bean
    public MinioClient minioClient() {
        return MinioClient.builder()
                .endpoint(minioProperties.getEndpoint())
                .credentials(minioProperties.getAccessKey(), minioProperties.getSecretKey())
                .build();
    }
}

5.上传文件代码

package com.example.mall2.controller;

import com.example.mall2.config.MinioConfig;
import io.minio.*;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.multipart.MultipartFile;

/**
 * Author: zhangbicheng
 * Date: 2022/2/18
 */
@RestController
public class UploadController {
    @Autowired
    private MinioClient minioClient;

    @RequestMapping("/upload")
    public String upload(MultipartFile file) {
        try {
            minioClient.putObject(
                    PutObjectArgs.builder()
                            .bucket("gstszbc")//bucket名
                            .object(file.getOriginalFilename())//上传到minio文件名
                            .contentType(file.getContentType())//文件类型
                            .stream(file.getInputStream(), file.getSize(), -1)
                                                        //文件流
                                                        .build());
            System.out.println("my-filename is uploaded to my-objectname successfully");
            return "11";
        } catch (Exception e) {
            e.printStackTrace();
            return e.getMessage();
        }
    }
}

6.测试上传

7.下载文件

 @RequestMapping("/download")
    public String download(HttpServletResponse response) {
        try {
            Iterable<Result<Item>> results = minioClient.listObjects(
                    ListObjectsArgs.builder().bucket("gstszbc").build()//获取bucket里所有文件信息
            );
            String fileName = null;
            for (Result<Item> result : results) {
                Item item = result.get();
                fileName = item.objectName();
                System.out.println(item.lastModified() + "\t" + item.size() + "\t" + item.objectName());
            }

            InputStream object = minioClient.getObject(GetObjectArgs.builder().bucket("gstszbc").object(fileName).build());
            BufferedOutputStream bos = new BufferedOutputStream(response.getOutputStream());
            IOUtils.copy(object, bos);
            response.setContentType(MediaType.APPLICATION_OCTET_STREAM_VALUE);
            response.addHeader("Content-Disposition", "attachment;filename=" + URLEncoder.encode(fileName, "utf-8"));
            bos.flush();
            return "success";
        } catch (Exception e) {
            e.printStackTrace();
            return e.getMessage();
        }
    }