阿里云oss存储器图片上传功能

controller层

@RestController
@RequestMapping("/upload")
public class FileUploadController {
    @PostMapping
    public Result upload(MultipartFile file) throws IOException {
        String  orgFilename = file.getOriginalFilename();
        //名字组合
        String filename = UUID.randomUUID().toString().substring(1,6)+orgFilename.substring(orgFilename.lastIndexOf("."));
        String url = AliOssUtil.uploadFile(filename,file.getInputStream());
        return Result.success(url);
    }
}

目的是将上传的图片存储到阿里云的OSS存储器中，然后返回一个url地址给前端页面。
这里工具类AliOssUtil，是阿里云oss云存储器提供案例。

public class AliOssUtil {
    private static final String ENDPOINT = "https://oss-cn-beijing.aliyuncs.com";
    private static final String ACCESS_KEY_ID = "你的oss键值id";
    private static final String SECRET_ACCESS_KEY = "密码值";
    private static final String BUCKET_NAME = "bucket名字";
    //上传文件,返回文件的公网访问地址
    public static String uploadFile(String objectName, InputStream inputStream){
        // 创建OSSClient实例。
        OSS ossClient = new OSSClientBuilder().build(ENDPOINT,ACCESS_KEY_ID,SECRET_ACCESS_KEY);
        //公文访问地址
        String url = "";
        try {
            // 创建存储空间。
            ossClient.createBucket(BUCKET_NAME);
            ossClient.putObject(BUCKET_NAME, objectName, inputStream);
            url = "https://"+BUCKET_NAME+"."+ENDPOINT.substring(ENDPOINT.lastIndexOf("/")+1)+"/"+objectName;
        } catch (OSSException oe) {
            System.out.println("Caught an OSSException, which means your request made it to OSS, "
                    + "but was rejected with an error response for some reason.");
            System.out.println("Error Message:" + oe.getErrorMessage());
            System.out.println("Error Code:" + oe.getErrorCode());
            System.out.println("Request ID:" + oe.getRequestId());
            System.out.println("Host ID:" + oe.getHostId());
        } catch (ClientException ce) {
            System.out.println("Caught an ClientException, which means the client encountered "
                    + "a serious internal problem while trying to communicate with OSS, "
                    + "such as not being able to access the network.");
            System.out.println("Error Message:" + ce.getMessage());
        } finally {
            if (ossClient != null) {
                ossClient.shutdown();
            }
        }
        return url;
    }
}