阿里云语音识别demo

package com.alibaba.idst.nls.utils; /** * Created by songsong.sss on 16/5/23. */ import java.io.*; import java.net.HttpURLConnection; import java.net.URL; import java.security.MessageDigest; import java.text.SimpleDateFormat; import java.util.Date; import java.util.Locale; import javax.crypto.spec.SecretKeySpec; import com.alibaba.idst.nls.response.HttpResponse; import sun.misc.BASE64Encoder; import javax.crypto.Mac; import org.slf4j.Logger; import org.slf4j.LoggerFactory; @SuppressWarnings("restriction") public class HttpUtil { static Logger logger = LoggerFactory.getLogger(HttpUtil.class); /* * 计算MD5+BASE64 */ public static String MD5Base64(String s) throws UnsupportedEncodingException { if (s == null) return null; String encodeStr = ""; //string 编码必须为utf-8 byte[] utfBytes = s.getBytes("UTF-8"); MessageDigest mdTemp; try { mdTemp = MessageDigest.getInstance("MD5"); mdTemp.update(utfBytes); byte[] md5Bytes = mdTemp.digest(); BASE64Encoder b64Encoder = new BASE64Encoder(); encodeStr = b64Encoder.encode(md5Bytes); } catch (Exception e) { throw new Error("Failed to generate MD5 : " + e.getMessage()); } return encodeStr; } /* * 计算 HMAC-SHA1 */ public static String HMACSha1(String data, String key) { String result; try { SecretKeySpec signingKey = new SecretKeySpec(key.getBytes(), "HmacSHA1"); Mac mac = Mac.getInstance("HmacSHA1"); mac.init(signingKey); byte[] rawHmac = mac.doFinal(data.getBytes()); result = (new BASE64Encoder()).encode(rawHmac); } catch (Exception e) { throw new Error("Failed to generate HMAC : " + e.getMessage()); } return result; } /* * 等同于javaScript中的 new Date().toUTCString(); */ public static String toGMTString(Date date) { SimpleDateFormat df = new SimpleDateFormat("E, dd MMM yyyy HH:mm:ss z", Locale.UK); df.setTimeZone(new java.util.SimpleTimeZone(0, "GMT")); return df.format(date); } /* * 发送POST请求 */ public static HttpResponse sendPost(String url, String body, String ak_id, String ak_secret) { PrintWriter out = null; BufferedReader in = null; String result = ""; HttpResponse response = new HttpResponse(); try { URL realUrl = new URL(url); /* * http header 参数 */ String method = "POST"; String accept = "application/json"; String content_type = "application/json"; String date = toGMTString(new Date()); // 1.对body做MD5+BASE64加密 String bodyMd5 = MD5Base64(body); String stringToSign = method + "\n" + accept + "\n" + bodyMd5 + "\n" + content_type + "\n" + date ; // 2.计算 HMAC-SHA1 String signature = HMACSha1(stringToSign, ak_secret); // 3.得到 authorization header String authHeader = "Dataplus " + ak_id + ":" + signature; // 打开和URL之间的连接 HttpURLConnection conn = (HttpURLConnection) realUrl.openConnection(); // 设置通用的请求属性 conn.setRequestProperty("accept", accept); conn.setRequestProperty("content-type", content_type); conn.setRequestProperty("date", date); conn.setRequestProperty("Authorization", authHeader); // 发送POST请求必须设置如下两行 conn.setDoOutput(true); conn.setDoInput(true); // 获取URLConnection对象对应的输出流 out = new PrintWriter(conn.getOutputStream()); // 发送请求参数 out.print(body); // flush输出流的缓冲 out.flush(); response.setStatus(conn.getResponseCode()); // 定义BufferedReader输入流来读取URL的响应 if (response.getStatus() ==200){ in = new BufferedReader(new InputStreamReader(conn.getInputStream())); }else { in = new BufferedReader(new InputStreamReader(conn.getErrorStream())); } String line; while ((line = in.readLine()) != null) { result += line; } if (response.getStatus() == 200){ response.setResult(result); response.setMessage("OK"); }else { response.setMessage(result); } System.out.println("post response status code: ["+response.getStatus()+"], response message : ["+response.getMessage()+"] ,result :["+response.getResult()+"]"); } 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(); } } return response; } /* * GET请求 */ public static HttpResponse sendGet(String url, String task_id,String ak_id, String ak_secret) { String result = ""; BufferedReader in = null; HttpResponse response = new HttpResponse(); try { URL realUrl = new URL(url+"/"+task_id); /* * http header 参数 */ String method = "GET"; String accept = "application/json"; String content_type = "application/json"; String path = realUrl.getFile(); String date = toGMTString(new Date()); // 1.对body做MD5+BASE64加密 //String bodyMd5 = MD5Base64(""); String stringToSign = method + "\n" + accept + "\n" + "" + "\n" + content_type + "\n" + date; // 2.计算 HMAC-SHA1 String signature = HMACSha1(stringToSign, ak_secret); // 3.得到 authorization header String authHeader = "Dataplus " + ak_id + ":" + signature; // 打开和URL之间的连接 HttpURLConnection connection = (HttpURLConnection) realUrl.openConnection(); // 设置通用的请求属性 connection.setRequestProperty("accept", accept); connection.setRequestProperty("content-type", content_type); connection.setRequestProperty("date", date); connection.setRequestProperty("Authorization", authHeader); // 建立实际的连接 connection.connect(); // 定义 BufferedReader输入流来读取URL的响应 in = new BufferedReader(new InputStreamReader(connection.getInputStream())); response.setStatus(connection.getResponseCode()); // 定义BufferedReader输入流来读取URL的响应 if (response.getStatus() ==200){ in = new BufferedReader(new InputStreamReader(connection.getInputStream())); }else { in = new BufferedReader(new InputStreamReader(connection.getErrorStream())); } String line; while ((line = in.readLine()) != null) { result += line; } if (response.getStatus() == 200){ response.setResult(result); response.setMessage("OK"); }else { response.setMessage(result); } System.out.println("get response status code: ["+response.getStatus()+"], response message : ["+response.