使用SpringBoot集成Minio实现文件上传、下载、删除功能_业界新闻

发布时间:2024-07-19 15:24

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1. 添加依赖

首先，在你的Spring Boot项目中添加Minio的依赖。在 pom.xml 文件中添加以下依赖：

<dependency>     <groupId>io.minio</groupId>     <artifactId>minio</artifactId>     <version>你的版本</version> </dependency>

2. 配置application.properties

在 application.properties 中配置Minio连接信息：

# Minio文件服务配置 minio:   # 访问服务地址   url: "http://127.0.0.1:5000"   # 用户名   user-name: "madmin"   # mi码   password: "madmin"   # 桶的名称   bucket-name: "test"

3. 创建Minio配置类

创建一个配置类 MinioConfig.java，用于初始化Minio客户端：

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("${minio.endpoint}")     private String endpoint;      @Value("${minio.accessKey}")     private String accessKey;      @Value("${minio.secretKey}")     private String secretKey;      @Bean     public MinioClient minioClient() {         return MinioClient.builder()                 .endpoint(endpoint)                 .credentials(accessKey, secretKey)                 .build();     } }

4. 实现文件上传、下载、删除操作

创建一个服务类 MinioFileService.java，实现文件上传、下载、删除等操作：

import io.minio.*; import io.minio.errors.MinioException; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.beans.factory.annotation.Value; import org.springframework.stereotype.Service; import org.springframework.util.StringUtils; import org.springframework.web.multipart.MultipartFile;  import java.io.IOException; import java.io.InputStream; import java.util.List; import java.util.stream.Collectors;  @Service public class MinioFileService {      @Autowired     private MinioClient minioClient;      @Value("${minio.bucketName}")     private String bucketName;      // 上传文件     public String uploadFile(MultipartFile file) throws IOException {         String fileName = StringUtils.cleanPath(file.getOriginalFilename());         try (InputStream inputStream = file.getInputStream()) {             minioClient.putObject(                     PutObjectArgs.builder()                             .bucket(bucketName)                             .object(fileName)                             .stream(inputStream, inputStream.available(), -1)                             .contentType(file.getContentType())                             .build());         } catch (MinioException | IOException e) {             throw new IOException("File upload failed: " + e.getMessage());         }         return fileName;     }      // 下载文件     public InputStream downloadFile(String fileName) throws IOException {         try {             return minioClient.getObject(                     GetObjectArgs.builder()                             .bucket(bucketName)                             .object(fileName)                             .build());         } catch (MinioException e) {             throw new IOException("File download failed: " + e.getMessage());         }     }      // 删除文件     public void deleteFile(String fileName) throws IOException {         try {             minioClient.removeObject(                     RemoveObjectArgs.builder()                             .bucket(bucketName)                             .object(fileName)                             .build());         } catch (MinioException e) {             throw new IOException("File deletion failed: " + e.getMessage());         }     }      // 获取所有文件列表     public List<String> getAllFiles() throws IOException {         try {             return minioClient.listObjects(                     ListObjectsArgs.builder()                             .bucket(bucketName)                             .build())                     .stream()                     .map(Result::get)                     .map(Item::objectName)                     .collect(Collectors.toList());         } catch (MinioException e) {             throw new IOException("Failed to retrieve file list: " + e.getMessage());         }     } }

5. 创建Controller层接口

创建一个Controller类 FileController.java，定义REST接口，实现文件上传、下载、删除的调用：

import org.springframework.beans.factory.annotation.Autowired; import org.springframework.web.bind.annotation.*; import org.springframework.web.multipart.MultipartFile; import javax.servlet.http.HttpServletResponse; import java.io.IOException; import java.io.InputStream; import java.util.List;  @RestController @RequestMapping("/files") public class FileController {      @Autowired     private MinioFileService minioFileService;      // 文件上传     @PostMapping("/upload")     public String uploadFile(@RequestParam("file") MultipartFile file) throws IOException {         return minioFileService.uploadFile(file);     }      // 文件下载     @GetMapping("/download/{fileName:.+}")     public void downloadFile(@PathVariable String fileName, HttpServletResponse response) throws IOException {         InputStream is = minioFileService.downloadFile(fileName);         response.setContentType("application/octet-stream");         response.setHeader("Content-Disposition", "attachment; filename=\"" + fileName + "\"");         org.apache.commons.io.IOUtils.copy(is, response.getOutputStream());         response.flushBuffer();     }      // 文件删除     @DeleteMapping("/delete/{fileName:.+}")     public void deleteFile(@PathVariable String fileName) throws IOException {         minioFileService.deleteFile(fileName);     }      // 获取所有文件列表     @GetMapping("/list")     public List<String> getAllFiles() throws IOException {         return minioFileService.getAllFiles();     } }