如何在Spring Boot中实现图片上传至本地和阿里云OSS

在Spring Boot中实现图片上传至本地和阿里云OSS，你需要使用Spring的MultipartFile接口来处理上传的文件，并使用阿里云提供的SDK进行OSS操作。以下是一个简化的例子：

1. 添加阿里云OSS依赖到你的pom.xml：

<dependency>
    <groupId>com.aliyun.oss</groupId>
    <artifactId>aliyun-sdk-oss</artifactId>
    <version>3.6.0</version>
</dependency>

2. 配置阿里云OSS参数在application.properties或application.yml：

# 阿里云OSS配置
aliyun.oss.endpoint=你的EndPoint
aliyun.oss.accessKeyId=你的AccessKeyId
aliyun.oss.accessKeySecret=你的AccessKeySecret
aliyun.oss.bucketName=你的BucketName

3. 创建配置类来读取这些参数：

@Configuration
public class AliyunOSSConfig {
    @Value("${aliyun.oss.endpoint}")
    private String endpoint;
 
    @Value("${aliyun.oss.accessKeyId}")
    private String accessKeyId;
 
    @Value("${aliyun.oss.accessKeySecret}")
    private String accessKeySecret;
 
    @Value("${aliyun.oss.bucketName}")
    private String bucketName;
 
    @Bean
    public OSS oSSClient() {
        return new OSSClientBuilder().build(endpoint, accessKeyId, accessKeySecret);
    }
 
    // Getter methods for endpoint, accessKeyId, etc.
}

4. 创建Service类来处理上传逻辑：

@Service
public class ImageUploadService {
    @Autowired
    private OSS ossClient;
 
    @Value("${aliyun.oss.bucketName}")
    private String bucketName;
 
    public String uploadImageToOSS(MultipartFile file) throws IOException {
        String fileName = UUID.randomUUID().toString() + "_" + file.getOriginalFilename();
        ossClient.putObject(bucketName, fileName, file.getInputStream());
        return "https://" + bucketName + "." + ossClient.getEndpoint().getHost() + "/" + fileName;
    }
 
    public void shutdownOSSClient() {
        if (ossClient != null) {
            ossClient.shutdown();
        }
    }
}

5. 在Controller中使用Service上传图片：

@RestController
public class ImageUploadController {
    @Autowired
    private ImageUploadService imageUploadService;
 
    @PostMapping("/upload")
    public String uploadImage(@RequestParam("file") MultipartFile file) {
        try {
            return imageUploadService.uploadImageToOSS(file);
        } catch (IOException e) {
            e.printStackTrace();
            return "上传失败";
        }
    }
}

6. 在Spring Boot启动类中添加关闭OSS客户端的Hook：

@SpringBootApplication
public class Application {
    private static final Logger log = LoggerFactory.getLogger(Application.class);
 
    public static void main(Strin