1 MinIO核心概念
下面介绍MinIO中的几个核心概念,这些概念在所有的对象存储服务中也都是通用的。
-
对象(Object)
对象是实际的数据单元,例如我们上传的一个图片。
-
存储桶(Bucket)
存储桶是用于组织对象的命名空间,类似于文件夹。每个存储桶可以包含多个对象。
-
端点(Endpoint)
端点是MinIO服务器的网络地址,用于访问存储桶和对象,例如
http://192.168.10.101:9000
注意:
9000
为MinIO的API的默认端口,前边配置的9001
以为管理页面端口。 -
Access Key 和 Secret Key
Access Key是用于标识和验证访问者身份的唯一标识符,相当于用户名。
Secret Key是与Access Key关联的密码,用于验证访问者的身份。
2.上传图片到minio当中去
-
创建一个Maven项目
-
引入如下依赖
<dependency><groupId>io.minio</groupId><artifactId>minio</artifactId><version>8.5.3</version> </dependency>
-
编写如下内容
public class App {public static void main(String[] args) throws ServerException, InsufficientDataException, ErrorResponseException, IOException, NoSuchAlgorithmException, InvalidKeyException, InvalidResponseException, XmlParserException, InternalException {//1.创建 MinioClient对象MinioClient minioClient = MinioClient.builder().credentials("minioadmin", "minioadmin").endpoint("http://192.168.153.128:9000").build();//2.判断指定名称的桶是否存在boolean flag = minioClient.bucketExists(BucketExistsArgs.builder().bucket("b002").build());//3.如果不存在,则先创建桶并设置策略if (!flag) {//创建桶minioClient.makeBucket(MakeBucketArgs.builder().bucket("b002").build());//指定策略String policy = """{"Version": "2012-10-17","Statement": [{"Effect": "Allow","Principal": {"AWS": ["*"]},"Action": ["s3:GetObject"],"Resource": ["arn:aws:s3:::b002/*"]}]}""";minioClient.setBucketPolicy(SetBucketPolicyArgs.builder().bucket("b002").config(policy).build());}// 4.上传图片minioClient.uploadObject(UploadObjectArgs.builder().bucket("b002").object("公寓-健身房.jpg").filename("C:\\Users\\codercui\\Pictures\\7.images\\房间-厨房-2.jpg").build());} }
-
运行测试
运行上述代码,然后查看MinIO管理页面,观察是否上传成功。
项目当中实现真正的图片上传
1. 图片上传流程
可以看出图片上传接口接收的是图片文件,返回的Minio对象的URL。
2. 图片上传接口开发
配置Minio Client
1.引入Minio Maven依赖
-
在common模块的
pom.xml
文件增加如下内容:<dependency><groupId>io.minio</groupId><artifactId>minio</artifactId> </dependency>
2.配置Minio相关参数
在application.yml
中配置Minio的endpoint
、accessKey
、secretKey
、bucketName
等参数
minio:endpoint: http://<hostname>:<port>access-key: <access-key>secret-key: <secret-key>bucket-name: <bucket-name>
注意:上述<hostname>
、<port>
等信息需根据实际情况进行修改。
3.创建一个minio的配置类
在common模块中创建com.atguigu.lease.common.minio.MinioProperties
,内容如下
package com.cuihub.lease.common.minio;import lombok.Data;
import org.springframework.boot.context.properties.ConfigurationProperties;@ConfigurationProperties(prefix = "minio")
@Data
public class MinioProperties {private String endpoint;private String accessKey;private String secretKey;private String bucketName;
}
@ConfigurationProperties 需要的依赖添加到pom.xml当中去
<dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-configuration-processor</artifactId><optional>true</optional></dependency>
4.创建MinioConfiguration
在common模块中创建com.atguigu.lease.common.minio.MinioConfiguration
,内容如下
package com.cuihub.lease.common.minio;import io.minio.BucketExistsArgs;
import io.minio.MakeBucketArgs;
import io.minio.MinioClient;
import io.minio.SetBucketPolicyArgs;
import io.minio.errors.*;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.context.properties.EnableConfigurationProperties;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;import java.io.IOException;
import java.security.InvalidKeyException;
import java.security.NoSuchAlgorithmException;@Configuration
@EnableConfigurationProperties(MinioProperties.class)
public class MinioConfiguration {@Autowiredprivate MinioProperties minioProperties;@Beanpublic MinioClient minioClient() throws ServerException, InsufficientDataException,ErrorResponseException, IOException, NoSuchAlgorithmException, InvalidKeyException,InvalidResponseException, XmlParserException, InternalException {MinioClient minioClient = MinioClient.builder().endpoint(minioProperties.getEndpoint()).credentials(minioProperties.getAccessKey(), minioProperties.getAccessKey()).build();boolean bucketExistsFlag = minioClient.bucketExists(BucketExistsArgs.builder().bucket(minioProperties.getBucketName()).build());if (!bucketExistsFlag){minioClient.makeBucket(MakeBucketArgs.builder().bucket(minioProperties.getBucketName()).build());String policy = """{"Statement" : [ {"Action" : "s3:GetObject","Effect" : "Allow","Principal" : "*","Resource" : "arn:aws:s3:::%s/*"} ],"Version" : "2012-10-17"}""".formatted(minioProperties.getBucketName());minioClient.setBucketPolicy(SetBucketPolicyArgs.builder().config(policy).bucket(minioProperties.getBucketName()).build());}return minioClient;}
}
5. 创建一个控制类
package com.cuihub.lease.web.admin.controller.apartment;import com.cuihub.lease.common.result.Result;
import com.cuihub.lease.web.admin.service.FileService;
import io.minio.MinioClient;
import io.minio.PutObjectArgs;
import io.minio.errors.*;
import io.swagger.v3.oas.annotations.Operation;
import io.swagger.v3.oas.annotations.tags.Tag;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.*;
import org.springframework.web.multipart.MultipartFile;import java.io.IOException;
import java.io.StringReader;
import java.security.InvalidKeyException;
import java.security.NoSuchAlgorithmException;@Tag(name = "文件管理")
@RequestMapping("/admin/file")
@RestController
public class FileUploadController {@Autowiredprivate FileService fileService;@Operation(summary = "上传文件")@CrossOrigin@PostMapping("upload")public Result<String> upload(@RequestParam MultipartFile file) throws Exception {String url = fileService.upload(file);
// System.out.println("url = " + url);return Result.ok(url);}}
6.创建FileService业务逻辑层
package com.cuihub.lease.web.admin.service;import org.springframework.web.multipart.MultipartFile;import java.io.IOException;public interface FileService {
String upload(MultipartFile multipartFile) throws Exception;
}
7.创建一个j接口实现类imp
package com.cuihub.lease.web.admin.service.impl;import com.cuihub.lease.common.minio.MinioProperties;
import com.cuihub.lease.web.admin.service.FileService;
import io.minio.MinioClient;
import io.minio.PutObjectArgs;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.web.multipart.MultipartFile;import java.io.IOException;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.UUID;@Service
public class FileServiceImpl implements FileService {@Autowiredprivate MinioProperties minioProperties;@Autowiredprivate MinioClient minioClient;@Overridepublic String upload(MultipartFile file) throws Exception {//获取原始文件名String originalFilename = file.getOriginalFilename();//创建新的文件名SimpleDateFormat sdf = new SimpleDateFormat("yyyyMMdd");originalFilename= sdf.format(new Date())+ "/" +( UUID.randomUUID().toString().replaceAll("-", ""))+"_"+originalFilename;minioClient.putObject(PutObjectArgs.builder().stream(file.getInputStream(), file.getSize(), -1).contentType(file.getContentType()).bucket(minioProperties.getBucketName()).object(originalFilename).build());System.out.println(minioProperties.getEndpoint()+minioProperties.getBucketName()+"fashedkjhgft");String url = String.format("%s/%s",minioProperties.getEndpoint(),minioProperties.getBucketName())+"/"+originalFilename;return url;}
}
这时候你就可以给前端返回一个图片的url地址啦
注意:
1.添加配置文件指定桶名
2.String.format 当中的占位符是%s,这里的s是小写,如果是大写%S那么返回的地址里面的字母全是大写的了