Java 实现录音功能 第一次能录音,第二次录音就不行,抛异常
public class SaveSound1 extends Frame {
boolean stopCapture = false; // 控制录音标志
AudioFormat audioFormat; // 录音格式
// 读取数据:从TargetDataLine写入ByteArrayOutputStream录音
ByteArrayOutputStream byteArrayOutputStream;
int totaldatasize = 0;
TargetDataLine targetDataLine;
// 播放数据:从AudioInputStream写入SourceDataLine播放
AudioInputStream audioInputStream;
SourceDataLine sourceDataLine;
public static void main(String args[]) throws InterruptedException {
for(int i = 0; i < 3; i++){
System.out.println(i);
SaveSound1 s1 = new SaveSound1();
s1.Running(s1.currentTime());
}
}
public void Running(String startTime){
//直接录音
capture();
try {
Thread.sleep(3000l);
} catch (InterruptedException e) {
e.printStackTrace();
}
stop();
String endTime = currentTime();
mySave(startTime,endTime);
}
public String currentTime(){
String currentTime = " ";
SimpleDateFormat dateFormater = new SimpleDateFormat("yyyy年MM月dd日 HH小时mm分ss秒");
Date date = new Date();
currentTime = dateFormater.format(date);
return currentTime;
}
private void capture() {
try {
// 打开录音
audioFormat = getAudioFormat();
DataLine.Info dataLineInfo = new DataLine.Info(TargetDataLine.class, audioFormat);
targetDataLine = (TargetDataLine) AudioSystem.getLine(dataLineInfo);
targetDataLine.open(audioFormat);
targetDataLine.start();
Thread captureThread = new Thread(new CaptureThread());
captureThread.start();
} catch (Exception e) {
e.printStackTrace();
System.exit(0);
}
}
public void stop() {
stopCapture = true;
}
保存文件
public void mySave(String startTime,String endTime) {
// 取得录音输入流
AudioFormat audioFormat = getAudioFormat();
byte audioData[] = byteArrayOutputStream.toByteArray();
InputStream byteArrayInputStream = new ByteArrayInputStream(audioData);
audioInputStream = new AudioInputStream(byteArrayInputStream,audioFormat, audioData.length / audioFormat.getFrameSize());
// 写入文件
try {
File file = new File("D:/"+startTime+" 至 "+endTime+".wav");
AudioSystem.write(audioInputStream, AudioFileFormat.Type.WAVE, file);
} catch (Exception e) {
e.printStackTrace();
}
}
private AudioFormat getAudioFormat() {
float sampleRate = 16000.0F;
// 8000,11025,16000,22050,44100
int sampleSizeInBits = 16;
// 8,16
int channels = 1;
// 1,2
boolean signed = true;
// true,false
boolean bigEndian = false;
// true,false
return new AudioFormat(sampleRate, sampleSizeInBits, channels, signed,bigEndian);
}
class CaptureThread extends Thread {
// 临时数组
byte tempBuffer[] = new byte[10000];
public void run() {
byteArrayOutputStream = new ByteArrayOutputStream();
totaldatasize = 0;
stopCapture = false;
try {// 循环执行,直到按下停止录音按钮
while (!stopCapture) {
// 读取10000个数据
int cnt = targetDataLine.read(tempBuffer, 0,
tempBuffer.length);
if (cnt > 0) {
// 保存该数据
byteArrayOutputStream.write(tempBuffer, 0, cnt);
totaldatasize += cnt;
}
}
byteArrayOutputStream.close();
} catch (Exception e) {
e.printStackTrace();
System.exit(0);
}
}
}
class PlayThread extends Thread {
byte tempBuffer[] = new byte[10000];
public void run() {
try {
int cnt;
// 读取数据到缓存数据
while ((cnt = audioInputStream.read(tempBuffer, 0,
tempBuffer.length)) != -1) {
if (cnt > 0) {
// 写入缓存数据
sourceDataLine.write(tempBuffer, 0, cnt);
}
}
// Block等待临时数据被输出为空
sourceDataLine.drain();
sourceDataLine.close();
} catch (Exception e) {
e.printStackTrace();
System.exit(0);
}
}
}
}
-------------------------------------------------以下是抛出的异常--------------------------------------------------
1
2
javax.sound.sampled.LineUnavailableException: line with format PCM_SIGNED 16000.0 Hz, 16 bit, mono, 2 bytes/frame, little-endian not supported.
at com.sun.media.sound.DirectAudioDevice$DirectDL.implOpen(Unknown Source)
at com.sun.media.sound.AbstractDataLine.open(Unknown Source)
at com.sun.media.sound.AbstractDataLine.open(Unknown Source)
at restart.SaveSound1.capture(SaveSound1.java:161)
at restart.SaveSound1.Running(SaveSound1.java:69)
at restart.SaveSound1$1.run(SaveSound1.java:49)
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提示我targetDataLine.open(audioFormat);出错
求解 为什么 第二次执行就抛异常了