springboot 阿里云oss

阿里云提供了Java SDK，通过该SDK，我们可以方便地在springboot中集成阿里云oss服务，实现文件的上传、下载、删除等操作。具体步骤如下：

1. 引入阿里云oss SDK依赖

<dependency>
    <groupId>com.aliyun.oss</groupId>
    <artifactId>aliyun-sdk-oss</artifactId>
    <version>2.6.1</version>
</dependency>

2. 在application.properties中配置oss相关参数

# oss访问地址
aliyun.oss.endpoint=yourEndpoint
# oss访问的accessKeyId
aliyun.oss.accessKeyId=yourAccessKeyId
# oss访问的accessKeySecret
aliyun.oss.accessKeySecret=yourAccessKeySecret
# oss的bucket名称
aliyun.oss.bucketName=yourBucketName

3. 编写oss工具类，实现文件的上传、下载、删除等操作

@Service
public class OSSUtil {

    @Autowired
    private OSSClient ossClient;

    // 上传文件
    public void uploadFile(String key, InputStream inputStream) {
        ossClient.putObject(bucketName, key, inputStream);
    }

    // 下载文件
    public void downloadFile(String key, OutputStream outputStream) {
        OSSObject ossObject = ossClient.getObject(bucketName, key);
        InputStream inputStream = ossObject.getObjectContent();
        try {
            byte[] buffer = new byte[1024];
            int len;
            while ((len = inputStream.read(buffer)) != -1) {
                outputStream.write(buffer, 0, len);
            }
        } catch (IOException e) {
            e.printStackTrace();
        } finally {
            try {
                inputStream.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    }

    // 删除文件
    public void deleteFile(String key) {
        ossClient.deleteObject(bucketName, key);
    }

}