java中如何获取音频(mp3)长度 请教java如何实现获取一段mp3的总时长
java \u600e\u4e48\u83b7\u53d6\u97f3\u9891\u6587\u4ef6\u65f6\u957fjava\u4e2d\u76f4\u63a5\u4f7f\u7528AudioInputStream\u7c7b\u6765\u64cd\u4f5c\u97f3\u4e50\u6587\u4ef6\uff0c\u83b7\u53d6\u65f6\u957f\uff0c\u5b9e\u4f8b\u5982\u4e0b\uff1a
import java.io.File;
import java.io.IOException;
import javax.sound.sampled.AudioInputStream;
import javax.sound.sampled.AudioSystem;
import javax.sound.sampled.Clip;
import javax.sound.sampled.LineUnavailableException;
import javax.sound.sampled.UnsupportedAudioFileException;
public class AudioLength {
public static void main(String[] args) throws LineUnavailableException,
UnsupportedAudioFileException, IOException {
File file = new File("d:/test.wav");
Clip clip = AudioSystem.getClip();
AudioInputStream ais = AudioSystem.getAudioInputStream(file);
clip.open(ais);
System.out.println( clip.getMicrosecondLength() / 1000000D + " s" );//\u83b7\u53d6\u97f3\u9891\u6587\u4ef6\u65f6\u957f
}
}
\u5728\u5bfc\u5165\u4e00\u4e2ajava-1.0.2\u5305 \u5c31\u53ef\u4ee5\u4e86 \u5982\u679c\u662f\u83b7\u53d6\u7f51\u7edc\u6587\u4ef6\uff0c\u90a3\u5c31\u9700\u8981\u5148\u628a\u6587\u4ef6\u4e0b\u8f7d\u5230\u672c\u5730\uff0c\u7136\u540e\u518d\u53bb\u83b7\u53d6\u97f3\u9891\u65f6\u957f
2.压缩格式。
基本上就跟这俩东西有关了。
有了这个以后，可以根据文件的大小来计算播放时长。
至于具体的，我也没算过。我觉得你可以cut一段音乐，比如wma格式的，看看一分钟是多大。然后用你的文件大小来和这个标准文件作比较。
还有其他方法就是借助外部包jar，也可使用JMF框架。
找个第三方的,MP3播放器的jar包,就能取出其长度
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