SpringBoot + oss 实现文件上传

SpringBoot可以通过阿里云的OSS（Object Storage Service）实现文件上传，以下是实现步骤：

1. 引入阿里云OSS SDK依赖

在pom.xml中引入以下依赖：

<dependency>
  <groupId>com.aliyun.oss</groupId>
  <artifactId>aliyun-sdk-oss</artifactId>
  <version>3.10.2</version>
</dependency>

2. 配置OSS连接信息

在application.properties文件中配置OSS连接信息：

oss.endpoint=your-endpoint
oss.accessKeyId=your-access-key-id
oss.accessKeySecret=your-access-key-secret
oss.bucketName=your-bucket-name

3. 创建OSS客户端

在配置类中创建OSS客户端：

@Configuration
public class OSSConfiguration {
    @Value("${oss.endpoint}")
    private String endpoint;

    @Value("${oss.accessKeyId}")
    private String accessKeyId;

    @Value("${oss.accessKeySecret}")
    private String accessKeySecret;

    @Bean
    public OSSClient ossClient() {
        return new OSSClient(endpoint, accessKeyId, accessKeySecret);
    }
}

4. 实现上传接口

@RestController
public class UploadController {
    @Autowired
    private OSSClient ossClient;

    @Value("${oss.bucketName}")
    private String bucketName;

    @PostMapping("/upload")
    public String upload(@RequestParam("file") MultipartFile file) {
        String fileName = file.getOriginalFilename();
        try {
            ossClient.putObject(bucketName, fileName, new ByteArrayInputStream(file.getBytes()));
            return "success";
        } catch (IOException e) {
            e.printStackTrace();
        } finally {
            ossClient.shutdown();
        }
        return "fail";
    }
}

以上就是通过阿里云OSS实现文件上传的步骤。