阿里云获取视频资源时长

阿里云oss授权访问文档示例地址
阿里云没有提供直接的获取是视频时长的API接口，需要曲线处理

1、引入阿里云oss pom

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

阿里云工具类

/**
 *  @author ful
 */
@Component
@Slf4j
public class AliOSSUtil {

    // endpoint 访问OSS的域名
    @Value("${oss.agora.endpoint}")
    public String endpoint;
    // accessKeyId和accessKeySecret OSS的访问密钥
    @Value("${oss.agora.id}")
    public String accessKeyId;
    @Value("${oss.agora.secret}")
    public String accessKeySecret;
    // Bucket 用来管理所存储Object的存储空间
    @Value("${oss.agora.bucket}")
    public String bucketName;
    @Value("${oss.agora.region}")
    public String region;
    @Value("${oss.agora.vendor}")
    public String vendor;
    @Value("${oss.agora.cdn}")
    public String cdn;

    /**
     * 文件直传
     *
     * @param objectKey   上传路径
     * @param inputStream 上传流
     * @throws RuntimeException
     */
    public void fileUpload(String objectKey, InputStream inputStream) throws RuntimeException {
        Map map = getCommon(objectKey);
        OSS ossClient = null;
        try {
            ossClient = (OSS) map.get(0);
            AliOssPublicEntity model = (AliOssPublicEntity) map.get(1);
            if (ossClient.doesObjectExist(model.getBucketName(), model.getObjectKey())) {
                log.error("此文件重名,请更改文件名重试!");
                throw new RuntimeException("此文件重名,请更改文件名重试!");
            }
            PutObjectRequest putObjectRequest = new PutObjectRequest(model.getBucketName(), model.getObjectKey(), inputStream);
            PutObjectResult putObjectResult = ossClient.putObject(putObjectRequest);
            String eTag = putObjectResult.getETag();
            if (StringUtils.isBlank(eTag)) {
                log.error("文件直传失败!");
                throw new RuntimeException("文件直传失败");
            }
        } catch (Exception e) {
            log.error("文件直传失败,exp={}", e);
            throw new RuntimeException("文件直传失败:" + e.getMessage());
        } finally {
            ossClient.shutdown();
            try {
                inputStream.close();
            } catch (IOException e) {
                log.error("关闭文件流异常={}", e);
            }
        }
    }

    /**
     * OSS获取下载签名URL
     *
     * @param objectKey 文件对象key
     * @return 签名URL
     */
    public String getOssObjectDownAuthUrl(String objectKey) throws RuntimeException {
        Map map = getCommon(objectKey);
        OSS ossClient = null;
        try {
            ossClient = (OSS) map.get(0);
            AliOssPublicEntity model = (AliOssPublicEntity) map.get(1);
            GeneratePresignedUrlRequest req =
                    new GeneratePresignedUrlRequest(model.getBucketName(), model.getObjectKey(), HttpMethod.GET);
            //这里设置签名在30小时后过期
            Date expiration = new Date(new Date().getTime() + 30L * 60L * 60L * 1000);// 生成URL
//            Date expireDate = new Date(System.currentTimeMillis() + 30L * 60L * 60L * 1000L);
            req.setExpiration(expiration);
            URL url = ossClient.generatePresignedUrl(req);
            String urlStr = url.toString();
            return urlStr;
        } catch (Exception e) {
            log.error("getOssObjectDownAuthUrl 获取下载签名URL失败,exp={}", e);
            throw new RuntimeException("获取下载签名URL失败");
        } finally {
            ossClient.shutdown();
        }
    }

    /**
     * OSS获取下载签名URL
     *
     * @param objectKey  文件对象key
     * @param expireTime 当前时间加多少毫秒后过期，过期时间（毫秒）
     * @return 签名URL
     */
    public String getOssObjectDownAuthUrl(String objectKey, long expireTime) throws RuntimeException {
        Map map = getCommon(objectKey);
        OSS ossClient = null;
        try {
            ossClient = (OSS) map.get(0);
            AliOssPublicEntity model = (AliOssPublicEntity) map.get(1);
            GeneratePresignedUrlRequest req =
                    new GeneratePresignedUrlRequest(model.getBucketName(), model.getObjectKey(), HttpMethod.GET);
            //这里设置签名在半个小时后过期
            Date expireDate = new Date(System.currentTimeMillis() + expireTime);
            req.setExpiration(expireDate);
            URL url = ossClient.generatePresignedUrl(req);
            String urlStr = url.toString();
            return urlStr;
        } catch (Exception e) {
            log.error("getOssObjectDownAuthUrl long获取下载签名URL失败,exp={}", e);
            throw new RuntimeException("获取下载签名URL失败");
        } finally {
            ossClient.shutdown();
        }
    }

    /**
     * OSS获取上传签名URL
     *
     * @param objectKey 文件对象key
     * @return 签名URL
     */
    public String getOssObjectUploadAuthUrl(String objectKey) throws RuntimeException {
        Map map = getCommon(objectKey);
        OSS ossClient = null;
        try {
            ossClient = (OSS) map.get(0);
            AliOssPublicEntity model = (AliOssPublicEntity) map.get(1);
            if (ossClient.doesObjectExist(model.getBucketName(), model.getObjectKey())) {
                throw new RuntimeException("此文件重名,请更改文件名重试!");
            }
            Date expirationTime = new Date(System.currentTimeMillis() + 30L * 60L * 1000L);
            GeneratePresignedUrlRequest request = new GeneratePresignedUrlRequest(model.getBucketName(), model.getObjectKey(), HttpMethod.PUT);
            request.setExpiration(expirationTime);
            //必须要!!!!!!，而且前端上传时，也需要在header里面设置，content-type为"application/octet-stream"
            request.setContentType("application/octet-stream");
            URL url = ossClient.generatePresignedUrl(request);
            String urlstr = url.toString();
            return urlstr;
        } catch (Exception e) {
            log.error("getOssObjectDownAuthUrl long获取上传签名URL失败,exp={}", e);
            throw new RuntimeException("获取上传签名URL失败" + e.getMessage());
        } finally {
            ossClient.shutdown();
        }
    }

    /**
     * 删除存储对象
     *
     * @param objectKey 文件对象key
     * @return 签名URL
     */
    public void deleteObject(String objectKey) throws RuntimeException {
        Map map = getCommon(objectKey);
        OSS ossClient = null;
        try {
            ossClient = (OSS) map.get(0);
            AliOssPublicEntity model = (AliOssPublicEntity) map.get(1);
            // 指定对象所在的存储桶
            ossClient.deleteObject(model.getBucketName(), model.getObjectKey());
        } catch (RuntimeException clientException) {
            log.error("deleteObject 删除存储对象失败,exp={}", clientException);
            throw new RuntimeException("删除存储对象失败");
        } finally {
            ossClient.shutdown();
        }
    }

    /**
     * 绝对路径更换为相对路径
     *
     * @param url 绝对路径
     * @return 相对路径
     */
    public String getRelativePath(String url) {
        url = url.substring(url.indexOf(".com") + 5, url.indexOf("?"));
        return url;
    }

    /**
     * client公共参数
     *
     * @param objectKey
     * @return
     */
    private Map getCommon(String objectKey) {
        AliOssPublicEntity entity = AliOssPublicEntity.build(objectKey, endpoint, accessKeyId, accessKeySecret, bucketName);
        OSS ossClient = new OSSClientBuilder().build(entity.getEndpoint(), entity.getAccessKeyId(), entity.getAccessKeySecret());
        Map map = new HashMap();
        map.put(0, ossClient);
        map.put(1, entity);
        return map;
    }
}

阿里云配置类

@Data
public class AliOssPublicEntity {

    private String endpoint;

    private String accessKeyId;

    private String accessKeySecret;

    private String bucketName;

    private String objectKey;

    public static AliOssPublicEntity build(String objectKey,String endpoint,String accessKeyId,
                                           String accessKeySecret,String bucketName) {
        AliOssPublicEntity entity = new AliOssPublicEntity();
        entity.setEndpoint(endpoint);
        entity.setAccessKeyId(accessKeyId);
        entity.setAccessKeySecret(accessKeySecret);
        entity.setBucketName(bucketName);
        entity.setObjectKey(objectKey);
        return entity;
    }
}

阿里云根据资源路径获取资源时长代码

 public int getVideoDuration(String videoUrl) {
        if (StringUtils.isNotEmpty(videoUrl) && "m3u8".equals(videoUrl.substring(videoUrl.length() - 4))) {
            try {
                videoUrl = aliOSSUtil.getOssObjectDownAuthUrl(videoUrl);
                log.info("getVideoDuration:aliOSSUtil.videoUrl ={}", videoUrl);
                HttpRequest httpRequest = HttpRequest.get(videoUrl)
                        .timeout(30000);
                log.info("getRequest httpRequest:{}", httpRequest);
                HttpResponse res = httpRequest.execute();
                String result = res.body();
                String pattern = "\\d+[.]\\d+";
                List<String> matchStrs = new ArrayList<>();
                Pattern r = Pattern.compile(pattern);
                Matcher m = r.matcher(result);
                while (m.find()) { //此处find（）每次被调用后，会偏移到下一个匹配
                    matchStrs.add(m.group());//获取当前匹配的值
                }
                Double durationDouble = 0.0;
                for (int i = 0; i < matchStrs.size(); i++) {
                    durationDouble += Double.parseDouble(matchStrs.get(i));
                }
                log.info("LiveDetailController.getVideoDuration->duration=", durationDouble.intValue());
                return durationDouble.intValue();
            } catch (Exception e) {
                log.error("getVideoDuration 异常={}", e);
            }
        }
        return 0;
    }

这里需要注意：
HttpRequest httpRequest = HttpRequest.get(videoUrl) .timeout(30000);请求是一定不要加 .header(“Content-Type”, “application/json”) 头，不然会验证签名失败