#!/usr/bin/env python
# coding: utf-8
import urllib2
import json
import base64
import os

#設(shè)置應(yīng)用信息
baidu_server = "https://openapi.baidu.com/oauth/2.0/token?"
grant_type = "client_credentials"
client_id = "" #填寫API Key
client_secret = "" #填寫Secret Key

#合成請(qǐng)求token的URL
url = baidu_server+"grant_type="+grant_type+"&client_id="+client_id+"&client_secret="+client_secret

#獲取token
res = urllib2.urlopen(url).read()
data = json.loads(res)
token = data["access_token"]
print token

#設(shè)置音頻屬性，根據(jù)百度的要求，采樣率必須為8000，壓縮格式支持pcm（不壓縮）、wav、opus、speex、amr
VOICE_RATE = 8000
WAVE_FILE = "test.wav" #音頻文件的路徑
USER_ID = "hail_hydra" #用于標(biāo)識(shí)的ID，可以隨意設(shè)置
WAVE_TYPE = "wav"

#打開音頻文件，并進(jìn)行編碼
f = open(WAVE_FILE, "r")
speech = base64.b64encode(f.read())
size = os.path.getsize(WAVE_FILE)
update = json.dumps({"format":WAVE_TYPE, "rate":VOICE_RATE, 'channel':1,'cuid':USER_ID,'token':token,'speech':speech,'len':size})
headers = { 'Content-Type' : 'application/json' } 
url = "http://vop.baidu.com/server_api"
req = urllib2.Request(url, update, headers)

r = urllib2.urlopen(req)


t = r.read()
result = json.loads(t)
print result
if result['err_msg']=='success.':
  word = result['result'][0].encode('utf-8')
  if word!='':
    if word[len(word)-3:len(word)]=='，':
      print word[0:len(word)-3]
    else:
      print word
  else:
    print "音頻文件不存在或格式錯(cuò)誤"
else:
  print "錯(cuò)誤"