百度语音合成REST API POST JAVA 保存MP3 格式文件

import java.io.BufferedInputStream; import java.io.BufferedOutputStream; import java.io.BufferedReader; import java.io.File; import java.io.FileOutputStream; import java.io.IOException; import java.io.InputStream; import java.io.InputStreamReader; import java.io.OutputStream; import java.io.PrintWriter; import java.net.HttpURLConnection; import java.net.URL; import java.net.URLEncoder; import org.json.JSONObject; public class VoiceSynthesis { private static final String serverURL = "http://tsn.baidu.com/text2audio"; private static final String testFileName = "这里改成你的文件路径，可用这种形式e:\\1.mp3"; private static String token = ""; private static final String apiKey = "这里改成你的apiKey"; private static final String secretKey = "这里改成你的secretKey "; private static final String cuid = "这里是你的唯一标识或IP地址，可用这种形式192.168.1.120"; private static final String lan = "zh"; private static final String tex = "欢迎光临，目前感觉多音字有问题，生当做人杰，当了手机买西瓜，两个当字发音都不对！";// public static void main(String[] args) throws Exception { getToken();//获取密钥，可改成对比过期后再获取 method1();//访问百度语音，获取返回的mp3二进制流 } //获取密钥过程，全局变量存储 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"); } //返回的数据默认是16K采样率，2字节精度，单声道的PCM数据。可以自己保存到文件进行播放。 private static void method1() throws Exception { PrintWriter out = null; BufferedReader in = null; File pcmFile = new File(testFileName); try { HttpURLConnection conn = (HttpURLConnection) new URL(serverURL + "?cuid=" + cuid + "&ctp=1&lan="+lan+"&per=0&pit=5&spd=5" +"&tex="+URLEncoder.encode(tex,"UTF-8")+"&tok=" + token).openConnection(); conn.setRequestMethod("POST"); conn.setRequestProperty("Content-Type", "audio/mp3;charset=UTF-8"); conn.setDoInput(true); conn.setDoOutput(true); // 获取URLConnection对象对应的输出流 out = new PrintWriter(conn.getOutputStream()); // flush输出流的缓冲 out.flush(); InputStream is=conn.getInputStream(); OutputStream output =new FileOutputStream(pcmFile); //缓冲文件输入流 BufferedInputStream bufferedInputStream = new BufferedInputStream(is); //缓冲文件输出流 BufferedOutputStream bufferedOutputStream = new BufferedOutputStream(output); //解释这个fis.read(bytes)的意思:从读取流"读取数组长度"的数据(打印len可知),并放入数组 int i = 0; //缓冲区的大小 byte[] buffer = new byte[512]; while(true) { if(bufferedInputStream.available() < 512) { while(i != -1) { i = bufferedInputStream.read(); bufferedOutputStream.write(i); } break; } else { //当文件的大小还大于512字节时 bufferedInputStream.read(buffer); bufferedOutputStream.write(buffer); } } //强制清空缓冲区的内容 bufferedOutputStream.flush(); //流的关闭 bufferedInputStream.close(); bufferedOutputStream.close(); } catch (Exception e) { System.out.println("发送 POST 请求出现异常！"+e); e.printStackTrace(); } //使用finally块来关闭输出流、输入流 finally{ try{ if(out!=null){ out.close(); } if(in!=null){ in.close(); } } catch(IOException ex){ ex.printStackTrace(); } } } 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(); } }