public class Sample extends Encoder {
private static final String serverURL = "http://vop.baidu.com/server_api";
private static String token = "";
//put your own params here
private static final String apiKey = "请前往百度语音获取";
private static final String secretKey = "请前往百度语音获取";
private static final String cuid = "请填写你的cuid";
private static final Pattern FORMAT_PATTERN = Pattern.compile("^\\s*([D ])([E ])\\s+([\\w,]+)\\s+.+$");
private static final Pattern ENCODER_DECODER_PATTERN = Pattern.compile("^\\s*([D ])([E ])([AVS]).{3}\\s+(.+)$", 2);
private static final Pattern PROGRESS_INFO_PATTERN = Pattern.compile("\\s*(\\w+)\\s*=\\s*(\\S+)\\s*", 2);
private static final Pattern SIZE_PATTERN = Pattern.compile("(\\d+)x(\\d+)", 2);
private static final Pattern FRAME_RATE_PATTERN = Pattern.compile("([\\d.]+)\\s+(?:fps|tb\\(r\\))", 2);
private static final Pattern BIT_RATE_PATTERN = Pattern.compile("(\\d+)\\s+kb/s", 2);
private static final Pattern SAMPLING_RATE_PATTERN = Pattern.compile("(\\d+)\\s+Hz", 2);
private static final Pattern CHANNELS_PATTERN = Pattern.compile("(mono|stereo)", 2);
private static final Pattern SUCCESS_PATTERN = Pattern.compile("^\\s*video\\:\\S+\\s+audio\\:\\S+\\s+global headers\\:\\S+.*$", 2);
private FFMPEGLocator locator;
public static void main(String[] args) throws Exception {
getToken();
method();
}
private static void getToken() throws Exception {
String getTokenURL = "https://openapi.baidu.com/oauth/2.0/token?grant_type=client_credentials" +
"&client_id=" + apiKey + "&client_secret=" + secretKey;
HttpURLConnection conn = (HttpURLConnection) new URL(getTokenURL).openConnection();
token = new JSONObject(printResponse(conn)).getString("access_token");
}
private static void method() throws Exception {
File pcmFile = new File("D://result.wav");//需要识别的音频文件
HttpURLConnection conn = (HttpURLConnection) new URL(serverURL).openConnection();
// 识别的参数
JSONObject params = new JSONObject();
params.put("format", "wav");
params.put("rate", 16000);
params.put("channel", "1");
params.put("token", token);
params.put("cuid", cuid);
params.put("len", pcmFile.length());
params.put("speech", DatatypeConverter.printBase64Binary(loadFile(pcmFile)));
// add request header
conn.setRequestMethod("POST");
conn.setRequestProperty("Content-Type", "application/json; charset=utf-8");
conn.setDoInput(true);
conn.setDoOutput(true);
// send request
DataOutputStream wr = new DataOutputStream(conn.getOutputStream());
wr.writeBytes(params.toString());
wr.flush();
wr.close();
printResponse(conn);
}
private static String printResponse(HttpURLConnection conn) throws Exception {
if (conn.getResponseCode() != 200) {
// request error
return "";
}
InputStream is = conn.getInputStream();
BufferedReader rd = new BufferedReader(new InputStreamReader(is));
String line;
StringBuffer response = new StringBuffer();
while ((line = rd.readLine()) != null) {
response.append(line);
response.append('\r');
}
rd.close();
System.out.println(new JSONObject(response.toString()).toString(4));
return response.toString();
}
private static byte[] loadFile(File file) throws IOException {
InputStream is = new FileInputStream(file);
long length = file.length();
byte[] bytes = new byte[(int) length];
int offset = 0;
int numRead = 0;
while (offset < bytes.length
&& (numRead = is.read(bytes, offset, bytes.length - offset)) >= 0) {
offset += numRead;
}
if (offset < bytes.length) {
is.close();
throw new IOException("Could not completely read file " + file.getName());
}
is.close();
return bytes;
}
}
