用java做一个可视化小程序，可以录音并予以保存。
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发布时间：2022-04-22 09:00
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时间：2023-12-02 03:26
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.InputStream;
import org.eclipse.swt.SWT;
import org.eclipse.swt.widgets.*;
import org.eclipse.swt.events.*;
import javax.sound.sampled.AudioFileFormat;
import javax.sound.sampled.AudioFormat;
import javax.sound.sampled.AudioInputStream;
import javax.sound.sampled.AudioSystem;
import javax.sound.sampled.DataLine;
import javax.sound.sampled.SourceDataLine;
import javax.sound.sampled.TargetDataLine;
public class RecordPlay {
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;
private Button captureBtn;
private Button stopBtn;
private Button playBtn;
private Button saveBtn;
private Label myLabel;
private Shell shell;
private Display display;
public RecordPlay() {
super();
display = new Display();
shell = new Shell(display);
shell.setSize(350, 150);
shell.setText("录音机程序");
//
myLabel = new Label(shell, SWT.NONE);
myLabel.setBounds(38, 21, 100, 18);
myLabel.setText("录音机");
// 创建按钮
captureBtn = new Button(shell, SWT.NONE);
captureBtn.setBounds(30, 61, 60, 18);
captureBtn.setText("录音");
captureBtn.setEnabled(true);
stopBtn = new Button(shell, SWT.NONE);
stopBtn.setBounds(100, 61, 60, 18);
stopBtn.setText("停止");
stopBtn.setEnabled(false);
playBtn = new Button(shell, SWT.NONE);
playBtn.setBounds(170, 61, 60, 18);
playBtn.setText("播放");
playBtn.setEnabled(false);
saveBtn = new Button(shell, SWT.NONE);
saveBtn.setBounds(240, 61, 60, 18);
saveBtn.setText("保存");
saveBtn.setEnabled(false);
// 注册录音事件
captureBtn.addSelectionListener(new SelectionListener() {
public void widgetSelected(SelectionEvent event) {
captureBtn.setEnabled(false);
stopBtn.setEnabled(true);
playBtn.setEnabled(false);
saveBtn.setEnabled(false);
// 开始录音
capture();
}
public void widgetDefaultSelected(SelectionEvent event) {
// text.setText("No worries!");
}
});
// 注册停止事件
stopBtn.addSelectionListener(new SelectionListener() {
public void widgetSelected(SelectionEvent event) {
captureBtn.setEnabled(true);
stopBtn.setEnabled(false);
playBtn.setEnabled(true);
saveBtn.setEnabled(true);
// 停止录音
stop();
}
public void widgetDefaultSelected(SelectionEvent event) {
// text.setText("No worries!");
}
});
// 注册播放事件
playBtn.addSelectionListener(new SelectionListener() {
public void widgetSelected(SelectionEvent event) {
// 播放录音
play();
}
public void widgetDefaultSelected(SelectionEvent event) {
// text.setText("No worries!");
}
});
// 注册保存事件
saveBtn.addSelectionListener(new SelectionListener() {
public void widgetSelected(SelectionEvent event) {
// 保存录音
save();
}
public void widgetDefaultSelected(SelectionEvent event) {
// text.setText("No worries!");
}
});
}
public void start() {
shell.open();
while (!shell.isDisposed()) {
if (!display.readAndDispatch()) {
display.sleep();
}
}
}
public static void main(String[] args) {
RecordPlay label = new RecordPlay();
label.start();
}
// （1）录音事件，保存到ByteArrayOutputStream中
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();
// 创建线程进行录音
Thread captureThread = new Thread(new CaptureThread());
captureThread.start();
} catch (Exception e) {
e.printStackTrace();
System.exit(0);
}
}
// （2）播放ByteArrayOutputStream中的数据
private void play() {
try {
// 取得录音数据
byte audioData[] = byteArrayOutputStream.toByteArray();
// 转换成输入流
InputStream byteArrayInputStream = new ByteArrayInputStream(
audioData);
AudioFormat audioFormat = getAudioFormat();
audioInputStream = new AudioInputStream(byteArrayInputStream,
audioFormat, audioData.length / audioFormat.getFrameSize());
DataLine.Info dataLineInfo = new DataLine.Info(
SourceDataLine.class, audioFormat);
sourceDataLine = (SourceDataLine) AudioSystem.getLine(dataLineInfo);
sourceDataLine.open(audioFormat);
sourceDataLine.start();
// 创建线程进行播放
Thread playThread = new Thread(new PlayThread());
playThread.start();
} catch (Exception e) {
e.printStackTrace();
System.exit(0);
}
}
// （3）停止录音
public void stop() {
stopCapture = true;
}
// （4）保存文件
public void save() {
// 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:/myjava/test.wav");
AudioSystem
.write(audioInputStream, AudioFileFormat.Type.WAVE, file);
} catch (Exception e) {
e.printStackTrace();
}
}
// 取得AudioFormat
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 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);
}
}
}
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);
}
}
}
}追问貌似有好怕多错误啊
