SpringBoot集成minio实现文件的上传，下载，获取列表，增加桶等的基本操作

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用springboot集成minio首先介绍一下什么是minio： minio是一个基于Apache License v2.0开源协议的对象存储服务。它兼容亚马逊S3云存储服务接口，非常适合于存储大容量非结构化的数据，例如图片、视频、日志文件、备份数据和容器/虚拟机镜像等，而一个对象文件可以是任意大小，从几kb到最大5T不等。

第一步，我们导入minio的jar包

<dependency>
<groupId>io.minio</groupId>
<artifactId>minio</artifactId>
<version>8.2.0</version>
</dependency>

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第二步，编写配置类

package com.wangfugui.apprentice.config;
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("${minio.url}")
private String url;
@Value("${minio.accessKey}")
private String accessKey;
@Value("${minio.secretKey}")
private String secretKey;
@Bean
public MinioClient getMinioClient() {
return MinioClient.builder().endpoint(url)
.credentials(accessKey, secretKey).build();
}
}

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这一步的目的是将MinioClient 给注入到spring的容器中以供我们使用

第三步，编写util类

package com.wangfugui.apprentice.common.util;
import com.wangfugui.apprentice.dao.dto.Fileinfo;
import io.minio.BucketExistsArgs;
import io.minio.CopyObjectArgs;
import io.minio.CopySource;
import io.minio.GetObjectArgs;
import io.minio.GetPresignedObjectUrlArgs;
import io.minio.ListObjectsArgs;
import io.minio.MakeBucketArgs;
import io.minio.MinioClient;
import io.minio.PutObjectArgs;
import io.minio.RemoveBucketArgs;
import io.minio.RemoveObjectArgs;
import io.minio.Result;
import io.minio.StatObjectArgs;
import io.minio.http.Method;
import io.minio.messages.Bucket;
import io.minio.messages.Item;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;
import java.io.InputStream;
import java.util.ArrayList;
import java.util.List;
@Component
public class MinioUtil {
@Autowired
private MinioClient minioClient;
/**
* 创建一个桶
*/
public void createBucket(String bucket) throws Exception {
boolean found = minioClient.bucketExists(BucketExistsArgs.builder().bucket(bucket).build());
if (!found) {
minioClient.makeBucket(MakeBucketArgs.builder().bucket(bucket).build());
}
}
/**
* 上传一个文件
*/
public void uploadFile(InputStream stream, String bucket, String objectName) throws Exception {
minioClient.putObject(PutObjectArgs.builder().bucket(bucket).object(objectName)
.stream(stream, -1, 10485760).build());
}
/**
* 列出所有的桶
*/
public List<String> listBuckets() throws Exception {
List<Bucket> list = minioClient.listBuckets();
List<String> names = new ArrayList<>();
list.forEach(b -> {
names.add(b.name());
});
return names;
}
/**
* 列出一个桶中的所有文件和目录
*/
public List<Fileinfo> listFiles(String bucket) throws Exception {
Iterable<Result<Item>> results = minioClient.listObjects(
ListObjectsArgs.builder().bucket(bucket).recursive(true).build());
List<Fileinfo> infos = new ArrayList<>();
results.forEach(r->{
Fileinfo info = new Fileinfo();
try {
Item item = r.get();
info.setFilename(item.objectName());
info.setDirectory(item.isDir());
infos.add(info);
} catch (Exception e) {
e.printStackTrace();
}
});
return infos;
}
/**
* 下载一个文件
*/
public InputStream download(String bucket, String objectName) throws Exception {
InputStream stream = minioClient.getObject(
GetObjectArgs.builder().bucket(bucket).object(objectName).build());
return stream;
}
/**
* 删除一个桶
*/
public void deleteBucket(String bucket) throws Exception {
minioClient.removeBucket(RemoveBucketArgs.builder().bucket(bucket).build());
}
/**
* 删除一个对象
*/
public void deleteObject(String bucket, String objectName) throws Exception {
minioClient.removeObject(RemoveObjectArgs.builder().bucket(bucket).object(objectName).build());
}
/**
* 复制文件
*
* @Param: [sourceBucket, sourceObject, targetBucket, targetObject]
* @return: void
* @Author: MrFugui
* @Date: 2021/11/15
*/
public void copyObject(String sourceBucket, String sourceObject, String targetBucket, String targetObject) throws Exception {
this.createBucket(targetBucket);
minioClient.copyObject(CopyObjectArgs.builder().bucket(targetBucket).object(targetObject)
.source(CopySource.builder().bucket(sourceBucket).object(sourceObject).build()).build());
}
/**
* 获取文件信息
*
* @Param: [bucket, objectName]
* @return: java.lang.String
* @Author: MrFugui
* @Date: 2021/11/15
*/
public String getObjectInfo(String bucket, String objectName) throws Exception {
return minioClient.statObject(StatObjectArgs.builder().bucket(bucket).object(objectName).build()).toString();
}
/**
* 生成一个给HTTP GET请求用的presigned URL。浏览器/移动端的客户端可以用这个URL进行下载，即使其所在的存储桶是私有的。
*
* @Param: [bucketName, objectName, expires]
* @return: java.lang.String
* @Author: MrFugui
* @Date: 2021/11/15
*/
public String getPresignedObjectUrl(String bucketName, String objectName, Integer expires) throws Exception {
GetPresignedObjectUrlArgs build = GetPresignedObjectUrlArgs
.builder().bucket(bucketName).object(objectName).expiry(expires).method(Method.GET).build();
return minioClient.getPresignedObjectUrl(build);
}
/**
* 获取minio中所有的文件
*
* @Param: []
* @return: java.util.List<boot.spring.domain.Fileinfo>
* @Author: MrFugui
* @Date: 2021/11/15
*/
public List<Fileinfo> listAllFile() throws Exception {
List<String> list = this.listBuckets();
List<Fileinfo> fileinfos = new ArrayList<>();
for (String bucketName : list) {
fileinfos.addAll(this.listFiles(bucketName));
}
return fileinfos;
}
}

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这里集成了minio sdk中的api 这是minio的api文档

第四步，编写controller类

package com.wangfugui.apprentice.controller;
import com.wangfugui.apprentice.common.util.MinioUtil;
import com.wangfugui.apprentice.common.util.ResponseUtils;
import io.swagger.annotations.Api;
import io.swagger.annotations.ApiOperation;
import org.apache.tomcat.util.http.fileupload.IOUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.multipart.MultipartFile;
import javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServletResponse;
import java.io.InputStream;
import java.net.URLEncoder;
@Api(tags = "文件操作接口")
@RestController
@RequestMapping(value = "/file")
public class FileController {
@Autowired
MinioUtil minioUtil;
@ApiOperation("上传一个文件")
@RequestMapping(value = "/uploadfile", method = RequestMethod.POST)
public ResponseUtils fileupload(@RequestParam MultipartFile uploadfile, @RequestParam String bucket,
@RequestParam(required = false) String objectName) throws Exception {
minioUtil.createBucket(bucket);
if (objectName != null) {
minioUtil.uploadFile(uploadfile.getInputStream(), bucket, objectName + "/" + uploadfile.getOriginalFilename());
} else {
minioUtil.uploadFile(uploadfile.getInputStream(), bucket, uploadfile.getOriginalFilename());
}
return ResponseUtils.success();
}
@ApiOperation("列出所有的桶")
@RequestMapping(value = "/listBuckets", method = RequestMethod.GET)
public ResponseUtils listBuckets() throws Exception {
return ResponseUtils.success(minioUtil.listBuckets());
}
@ApiOperation("递归列出一个桶中的所有文件和目录")
@RequestMapping(value = "/listFiles", method = RequestMethod.GET)
public ResponseUtils listFiles(@RequestParam String bucket) throws Exception {
return ResponseUtils.success(minioUtil.listFiles(bucket));
}
@ApiOperation("下载一个文件")
@RequestMapping(value = "/downloadFile", method = RequestMethod.GET)
public void downloadFile(@RequestParam String bucket, @RequestParam String objectName,
HttpServletResponse response) throws Exception {
InputStream stream = minioUtil.download(bucket, objectName);
ServletOutputStream output = response.getOutputStream();
response.setHeader("Content-Disposition", "attachment;filename=" + URLEncoder.encode(objectName.substring(objectName.lastIndexOf("/") + 1), "UTF-8"));
response.setContentType("application/octet-stream");
response.setCharacterEncoding("UTF-8");
IOUtils.copy(stream, output);
}
@ApiOperation("删除一个文件")
@RequestMapping(value = "/deleteFile", method = RequestMethod.GET)
public ResponseUtils deleteFile(@RequestParam String bucket, @RequestParam String objectName) throws Exception {
minioUtil.deleteObject(bucket, objectName);
return ResponseUtils.success();
}
@ApiOperation("删除一个桶")
@RequestMapping(value = "/deleteBucket", method = RequestMethod.GET)
public ResponseUtils deleteBucket(@RequestParam String bucket) throws Exception {
minioUtil.deleteBucket(bucket);
return ResponseUtils.success();
}
@ApiOperation("复制一个文件")
@GetMapping("/copyObject")
public ResponseUtils copyObject(@RequestParam String sourceBucket, @RequestParam String sourceObject, @RequestParam String targetBucket, @RequestParam String targetObject) throws Exception {
minioUtil.copyObject(sourceBucket, sourceObject, targetBucket, targetObject);
return ResponseUtils.success();
}
@GetMapping("/getObjectInfo")
@ApiOperation("获取文件信息")
public ResponseUtils getObjectInfo(@RequestParam String bucket, @RequestParam String objectName) throws Exception {
return ResponseUtils.success(minioUtil.getObjectInfo(bucket, objectName));
}
@GetMapping("/getPresignedObjectUrl")
@ApiOperation("获取一个连接以供下载")
public ResponseUtils getPresignedObjectUrl(@RequestParam String bucket, @RequestParam String objectName, @RequestParam Integer expires) throws Exception {
return ResponseUtils.success(minioUtil.getPresignedObjectUrl(bucket, objectName, expires));
}
@GetMapping("/listAllFile")
@ApiOperation("获取minio中所有的文件")
public ResponseUtils listAllFile() throws Exception {
return ResponseUtils.success(minioUtil.listAllFile());
}
}

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注意这里的ResponseUtils请去附件中下载，在yml中配置minio的地址
第五步，配置yml文件

minio:
url: http://1localhost:9000 #对象存储服务的URL
accessKey: root #账户
secretKey: 123456 #密码

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第六步，启动项目，访问api

SpringBoot集成minio实现文件的上传，下载，获取列表，增加桶等的基本操作

到这里就完成了springboot集成minio实现文件的上传等功能

PS:附件中包含了本例的源码及spring-minio源码

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SpringBoot集成minio实现文件的上传，下载，获取列表，增加桶等的基本操作

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