java获取视频的时长

1.获取jar包(没有maven的坐标)

http://www.sauronsoftware.it/projects/jave/index.php

2.视频上传的工具类，注意:这个是上传到阿里云的oos上的工具类，

package com.ad.admin.utils.oss;

import com.ad.admin.common.AdAllianceProperties;
import com.ad.admin.common.exception.BusinessException;
import com.aliyun.oss.OSSClient;
import it.sauronsoftware.jave.Encoder;
import it.sauronsoftware.jave.MultimediaInfo;
import org.springframework.web.multipart.MultipartFile;

import java.io.File;
import java.io.FileOutputStream;
import java.io.InputStream;
import java.io.OutputStream;


public class VideoOssClientUtil extends OSSUtil {

    public VideoOssClientUtil(AdAllianceProperties   adAllianceProperties) {
        super(adAllianceProperties);
        // 视频的文件目录
        fileDir = adAllianceProperties.getOssConfigure().getVideoDir();
        ossClient = new OSSClient(endPoint, accessKeyId, accessKeySecret);
    }






    public String uploadVideo(MultipartFile file) throws Exception {
        if (file.getSize() > 100 * 1024 * 1024) {
            throw new BusinessException("上传视频大小不能超过100MB！");
        }
        String substring = getFileSuffix(file);
        String name = getRandomFileName(substring);
        uploadFileToOss(file.getInputStream(), name);
        return "http://" + baseUrl + fileDir + name ;
    }
    /**
     * 判断上传文件是否为视频
     *
     * @param fileNames 文件名
     **/
    public static boolean isVideo(String fileNames) {
        String suffix = fileNames.split("\\.")[fileNames.split("\\.").length - 1].toLowerCase();
        if ("mp4".equals(suffix)) {
            return true;
        }
        if ("rmvb".equals(suffix)) {
            return true;
        }
        if ("rm".equals(suffix)) {
            return true;
        }
        if ("asf".equals(suffix)) {
            return true;
        }
        if ("divx".equals(suffix)) {
            return true;
        }
        if ("mpg".equals(suffix)) {
            return true;
        }
        if ("mpeg".equals(suffix)) {
            return true;
        }
        if ("mpe".equals(suffix)) {
            return true;
        }
        if ("wmv".equals(suffix)) {
            return true;
        }
        if ("avi".equals(suffix)) {
            return true;
        }
        return false;
    }

    //获取视频的时长(单位秒)
    public  Long  getVideoDuration(MultipartFile file) throws Exception {
        File newFile = new File(file.getOriginalFilename());
        transformToFile(file.getInputStream(),newFile);
        Encoder encoder = new Encoder();
        MultimediaInfo multimediaInfo = encoder.getInfo(newFile);
        deleteFile(newFile);
        return  multimediaInfo.getDuration() / 1000;
    }

    //将InputStream转换成File
    private  void transformToFile(InputStream inputStream, File file){
        try {

            OutputStream os = new FileOutputStream(file);
            int bytesRead = 0;
            byte[] buffer = new byte[1024 * 1024 * 10];
            while ((bytesRead = inputStream.read(buffer, 0, 1024 * 1024 * 10)) != -1) {
                os.write(buffer, 0, bytesRead);
            }
            os.close();
            inputStream.close();
        } catch (Exception e) {
            e.printStackTrace();
        }
    }


    private  void  deleteFile(File file){
        File newFile = new File(file.toURI());
        System.out.println("删除临时文件=================uri:"+file.toURI());
        newFile.delete();
    }
}

package com.ad.admin.utils.oss;

import com.ad.admin.common.AdAllianceProperties;
import com.aliyun.oss.OSSClient;
import com.aliyun.oss.model.ObjectMetadata;
import com.aliyun.oss.model.PutObjectResult;
import org.springframework.web.multipart.MultipartFile;

import javax.annotation.Resource;
import java.io.IOException;
import java.io.InputStream;
import java.net.URL;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.Random;


public class OSSUtil {
    protected String endPoint;
    protected String accessKeyId;
    protected String accessKeySecret;
    protected String bucketName;
    protected String fileDir;
    protected String baseUrl;
    protected OSSClient ossClient = null;

    public OSSUtil(AdAllianceProperties adAllianceProperties) {
        endPoint = adAllianceProperties.getOssConfigure().getEndPoint();
        accessKeyId = adAllianceProperties.getOssConfigure().getAccessKeyId();
        accessKeySecret = adAllianceProperties.getOssConfigure().getAccessKeySecret();
        bucketName = adAllianceProperties.getOssConfigure().getBucketName();
        baseUrl = adAllianceProperties.getOssConfigure().getBaseUrl();
    }


//以当前时间重命名文件
    public String getRandomFileName(String suffix){
        Random random = new Random();
        String format = new SimpleDateFormat("yyyyMMddHHmmssSSS").format(new Date())+"666" + random.nextInt(1000000);
        return "xmeal" + format + suffix;
    }


    /**
     * Description: 判断OSS服务文件上传时文件的contentType
     *
     * @param FilenameExtension 文件后缀
     * @return String
     */
    public  String getContentType(String FilenameExtension) {
        if (FilenameExtension.equalsIgnoreCase("bmp")) {
            return "image/bmp";
        }
        if (FilenameExtension.equalsIgnoreCase("gif")) {
            return "image/gif";
        }
        if (FilenameExtension.equalsIgnoreCase("jpeg") ||
                FilenameExtension.equalsIgnoreCase("jpg") ||
                FilenameExtension.equalsIgnoreCase("png")) {
            return "image/jpeg";
        }
        if (FilenameExtension.equalsIgnoreCase("html")) {
            return "text/html";
        }
        if (FilenameExtension.equalsIgnoreCase("txt")) {
            return "text/plain";
        }
        if (FilenameExtension.equalsIgnoreCase("vsd")) {
            return "application/vnd.visio";
        }
        if (FilenameExtension.equalsIgnoreCase("pptx") ||
                FilenameExtension.equalsIgnoreCase("ppt")) {
            return "application/vnd.ms-powerpoint";
        }
        if (FilenameExtension.equalsIgnoreCase("docx") ||
                FilenameExtension.equalsIgnoreCase("doc")) {
            return "application/msword";
        }
        if (FilenameExtension.equalsIgnoreCase("xml")) {
            return "text/xml";
        }
        if(FilenameExtension.equalsIgnoreCase("mp4")){
            return "void/mp4";
        }
        if(FilenameExtension.equalsIgnoreCase("avi")){
            return "void/avi";
        }
        return "image/jpeg";
    }

    /**
     * 上传到OSS服务器  如果同名文件会覆盖服务器上的
     * @param ins 文件流
     * @param fileName 文件名称 包括后缀名
     * @return 出错返回"" ,唯一MD5数字签名
     */
    public String uploadFileToOss(InputStream ins, String fileName) throws Exception {
        String result = "";

        //创建上传Object的Metadate
        ObjectMetadata objectMetadata = new ObjectMetadata();
        objectMetadata.setContentLength(ins.available());
        objectMetadata.setCacheControl("no-cache");
        objectMetadata.setContentType(getContentType(fileName.substring(fileName.lastIndexOf("."))));
        objectMetadata.setContentDisposition("inline;filename=" + fileName);

        //上传
        PutObjectResult por = ossClient.putObject(bucketName, fileDir + fileName, ins, objectMetadata);
        result = por.getETag();
        if(!"".equalsIgnoreCase(result)) {
            result = "http://" + baseUrl + fileDir + fileName;
        }
        try {
            if(ins != null)
                ins.close();
        } catch (IOException io) {
            throw io;
        } finally {
            return result;
        }
    }

    public String getFileSuffix(MultipartFile file){
        String originalFilename = file.getOriginalFilename();
        String suffix = originalFilename.substring(originalFilename.lastIndexOf(".")).toLowerCase();
        return suffix;
    }

    //删除文件
    public void  deleteResources(String url) {
        boolean found = ossClient.doesObjectExist(bucketName, "resources"+ url);
        if(found){
            this.ossClient.deleteObject(bucketName,"resources"+url);
        }
    }

}