java 获取音视频文件的大小、以及播放时长

package com.readVideo.test;
 
 
public class VideoName {
 
    private int id;
    private String name;
    private String time;
    private String size;
    private String leaf;
    private String url;
    private String brief;
    private int VIDEO_DETAIL_ID;
 
    public int getId() {
        return id;
    }
    public void setId(int id) {
        this.id = id;
    }
    public String getName() {
        return name;
    }
    public void setName(String name) {
        this.name = name;
    }
    public String getTime() {
        return time;
    }
    public void setTime(String time) {
        this.time = time;
    }
    public String getSize() {
        return size;
    }
    public void setSize(String size) {
        this.size = size;
    }
    public String getLeaf() {
        return leaf;
    }
    public void setLeaf(String leaf) {
        this.leaf = leaf;
    }
    public String getUrl() {
        return url;
    }
    public void setUrl(String url) {
        this.url = url;
    }
    public String getBrief() {
        return brief;
    }
    public void setBrief(String brief) {
        this.brief = brief;
    }
    public int getVIDEO_DETAIL_ID() {
        return VIDEO_DETAIL_ID;
    }
    public void setVIDEO_DETAIL_ID(int vIDEO_DETAIL_ID) {
        VIDEO_DETAIL_ID = vIDEO_DETAIL_ID;
    }
     
     
}

package com.readVideo.test;
 
import it.sauronsoftware.jave.Encoder;
import it.sauronsoftware.jave.MultimediaInfo;
import java.io.File;
import java.text.DecimalFormat;
import java.util.ArrayList;
import java.util.List;
 
public class ReadVideoMessages {
 
    /**
     * 得到视频的大小
     *
     * @param f
     *            文件
     * @return 视频的大小
     */
    public static String getFileSize(File f) {
        // 保留两位小数
        DecimalFormat df = new DecimalFormat(".##");
        // 得到视频的长度
        Long long1 = f.length();
        String size = "";
        long G = 1024 * 1024 * 1024;
        long M = 1024 * 1024;
        long K = 1024;
        // 视频大小超过G、超过M不超过G、超过K不超过M
        if (long1 / G >= 1) {
            size = df.format((double) long1 / G) + "G";
        } else if (long1 / M >= 1) {
            size = df.format((double) long1 / M) + "M";
        } else if (long1 / K >= 1) {
            size = df.format((double) long1 / K) + "K";
        } else {
            size = long1 + "B";
        }
        // System.out.println(time);
        return size;
 
    }
 
    /**
     * 得到视频的长度
     *
     * @param f
     *            文件
     * @return 视频的长度
     */
    public static String getVideoTime(File f) {
        String time = "";
        //新建编码器对象
        Encoder encoder = new Encoder();
        try {
            //得到多媒体视频的信息
            MultimediaInfo m = encoder.getInfo(f);
            //得到毫秒级别的多媒体是视频长度
            long ls = m.getDuration();
            //转换为分秒
            time = ls / 60000 + "分" + (ls - (ls / 60000 * 60000)) / 1000 + "秒";
        } catch (Exception e) {
            e.printStackTrace();
        }
 
        return time;
 
    }
 
    // 显示目录的方法
    /**
     * 得到视频所有的信息
     *
     * @param file
     *            文件夹 or 文件
     * @return 视频的信息
     */
    public static List<VideoName> getAllMessage(File file) {
        List<VideoName> videoNames = new ArrayList<VideoName>();
        // System.out.println( file.getAbsolutePath());
        String time = "";
        String size = "";
        // 判断传入对象是否为一个文件夹对象
        if (!file.isDirectory()) {
            System.out.println("你输入的不是一个文件夹，请检查路径是否有误！！");
        } else {
            File[] f = file.listFiles();
            for (int i = 0; i < f.length; i++) {
                // 判断文件列表中的对象是否为文件夹对象，如果是则执行tree递归，直到把此文件夹中所有文件输出为止
                if (f[i].isDirectory()) {
                    System.out.println(f[i].getName() + "\tttdir");
                    // getAllMessage(f[i]);
                } else {
                    time = getVideoTime(f[i]);
                    if (time.equals("")) {
                        time = "未知";
                    }
                    size = getFileSize(f[i]);
                    VideoName videoName = new VideoName();
                    int j = f[i].getName().indexOf("-", 1);
                    videoName.setName(f[i].getName().substring(0, j));
                    videoName.setSize(size);
                    videoName.setTime(time);
                    videoName.setBrief(f[i].getName().substring(j + 1,
                            f[i].getName().length()));
                    videoName.setUrl("F:/Resource/video/硬件/AltiumDesigner/"
                            + f[i].getName());
                    videoNames.add(videoName);
                    System.out.println(time
                            + "---"
                            + size
                            + "---"
                            + f[i].getName().substring(0, j)
                            + "---"
                            + f[i].getName().substring(j + 1,
                                    f[i].getName().length()) + "---"
                            + "F:/Resource/video/硬件/AltiumDesigner/"
                            + f[i].getName());
                }
            }
        }
        return videoNames;
 
    }
 
    public static void main(String[] args) {
        File f = new File("F:\\Resource\\video\\软件\\LabView");
        List<VideoName> videoMessages = getAllMessage(f);
        System.out.println(videoMessages.size());
    }
 
}