首先需要安装minIO,公司有的话最好,没有那就自己本地安装一个。
推荐安装文章https://blog.youkuaiyun.com/qq_38974638/article/details/115678147
1.引入依赖
<dependency>
<groupId>io.minio</groupId>
<artifactId>minio</artifactId>
<version>8.5.2</version>
</dependency>
因为我的JDK是17,版本大家自己斟酌哈,让我看看还有谁在用 8 🥺🥺🥺
2.配置文件
minio:
endpoint: http://127.0.0.1:9000/minio/
access-key: minioadmin
secret-key: minioadmin
bucketName: demo
前三个配置,如果本地安装默认应该是这个配置,最后一个是需要大家自己去minIO创建的哈,如果使用公司的需要问下配置的;
3.创建MinioConfig的配置文件
package com.wangyang.demo17.config;
import io.minio.MinioClient;
import lombok.Data;
import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.context.annotation.Bean;
import org.springframework.stereotype.Component;
@Data
@Component
@ConfigurationProperties(prefix = "minio")
public class MinioConfig {
private String endpoint;
private String accessKey;
private String secretKey;
private String bucketName;
@Bean
public MinioClient minioClient() {
return MinioClient.builder()
.endpoint(endpoint)
.credentials(accessKey, secretKey)
.build();
}
}
该配置类,会读取第二步中的四个配置,在项目启动时,创建 MinioConfig 对象;后面我们只需
@Autowired 注入该 bean 对象即可正常使用;
4.上传下载
package com.wangyang.demo17.controller;
import com.wangyang.demo17.config.MinioConfig;
import io.minio.GetObjectArgs;
import io.minio.MinioClient;
import io.minio.PutObjectArgs;
import jakarta.servlet.http.HttpServletResponse;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RequestPart;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.multipart.MultipartFile;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.URLEncoder;
import java.util.UUID;
@RestController
@RequestMapping("/minio")
public class MinIOController {
@Autowired
private MinioClient minioClient;
@Autowired
private MinioConfig minioConfig;
@PostMapping("/up")
public String uploadFile(@RequestPart MultipartFile file) throws Exception {
String fileType = file.getOriginalFilename().substring(file.getOriginalFilename().lastIndexOf("."));
String fileName = UUID.randomUUID().toString().replace("-", "") + fileType;
minioClient.putObject(PutObjectArgs.builder()
.bucket(minioConfig.getBucketName())
.object(fileName)
.stream(file.getInputStream(), file.getInputStream().available(), -1)
.contentType(file.getContentType())
.build());
return fileName;
}
@PostMapping("/down")
public void downLoad(@RequestParam("fileName") String fileName, HttpServletResponse response) {
try (OutputStream outputStream = response.getOutputStream();
InputStream inputStream = minioClient.getObject(GetObjectArgs.builder().bucket(minioConfig.getBucketName()).object(fileName).build());) {
// 获取文件对象
byte buf[] = new byte[1024];
int length = 0;
response.reset();
response.setHeader("Content-Disposition", "attachment;filename=" +
URLEncoder.encode(fileName.substring(fileName.lastIndexOf("/") + 1), "UTF-8"));
response.setContentType("application/octet-stream");
response.setCharacterEncoding("UTF-8");
// 输出文件
while ((length = inputStream.read(buf)) > 0) {
outputStream.write(buf, 0, length);
}
} catch (Throwable ex) {
response.setHeader("Content-type", "text/html;charset=UTF-8");
String data = "文件下载失败";
try {
OutputStream ps = response.getOutputStream();
ps.write(data.getBytes("UTF-8"));
} catch (IOException e) {
e.printStackTrace();
}
}
}
}
上传返回的文件名称是uuid加上文件后缀,防止重复上传,导致文件名称重复而上传失败,fileName可作为下载的参数直接使用,这里方便大家阅读就不分sevice层级了。
以上就是全部代码,均已验证可行。