不需要注册百度翻译平台，利用获取界面js，得知百度翻译中sign的加密规则
直接上源码
import execjs
import requests
import re
JS_CODE = """
function a(r, o) {
for (var t = 0; t < o.length - 2; t += 3) {
var a = o.charAt(t + 2);
a = a >= "a" ? a.charCodeAt(0) - 87 : Number(a),
a = "+" === o.charAt(t + 1) ? r >>> a: r << a,
r = "+" === o.charAt(t) ? r + a & 4294967295 : r ^ a
}
return r
}
var C = null;
var token = function(r, _gtk) {
var o = r.length;
o > 30 && (r = "" + r.substr(0, 10) + r.substr(Math.floor(o / 2) - 5, 10) + r.substring(r.length, r.length - 10));
var t = void 0,
t = null !== C ? C: (C = _gtk || "") || "";
for (var e = t.split("."), h = Number(e[0]) || 0, i = Number(e[1]) || 0, d = [], f = 0, g = 0; g < r.length; g++) {
var m = r.charCodeAt(g);
128 > m ? d[f++] = m: (2048 > m ? d[f++] = m >> 6 | 192 : (55296 === (64512 & m) && g + 1 < r.length && 56320 === (64512 & r.charCodeAt(g + 1)) ? (m = 65536 + ((1023 & m) << 10) + (1023 & r.charCodeAt(++g)), d[f++] = m >> 18 | 240, d[f++] = m >> 12 & 63 | 128) : d[f++] = m >> 12 | 224, d[f++] = m >> 6 & 63 | 128), d[f++] = 63 & m | 128)
}
for (var S = h,
u = "+-a^+6",
l = "+-3^+b+-f",
s = 0; s < d.length; s++) S += d[s],
S = a(S, u);
return S = a(S, l),
S ^= i,
0 > S && (S = (2147483647 & S) + 2147483648),
S %= 1e6,
S.toString() + "." + (S ^ h)
}
"""
class Dict:
def __init__(self):
self.sess = requests.Session()
self.headers = {
'User-Agent':
'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_2) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/71.0.3578.98 Safari/537.36'
}
self.token = None
self.gtk = None
# 获得token和gtk
# 必须要加载两次保证token是最新的，否则会出现998的错误
self.loadMainPage()
self.loadMainPage()
def loadMainPage(self):
"""
load main page : /
and get token, gtk
"""
url = ''
try:
r = self.sess.get(url, headers=self.headers)
self.token = re.findall(r"token: '(.*?)',", r.text)[0]
self.gtk = re.findall(r"window.gtk = '(.*?)';", r.text)[0]
except Exception as e:
raise e
# print(e)
def langdetect(self, query):
"""
post query to /langdetect
return json
{"error":0,"msg":"success","lan":"en"}
"""
url = '/langdetect'
data = {'query' : query}
try:
r = self.sess.post(url=url, data=data)
except Exception as e:
raise e
# print(e)
json = r.json()
if 'msg' in json and json['msg'] == 'success':
return json['lan']
return None
def dictionary(self, query):
"""
max query count = 2
get translate result from /v2transapi
"""
url = '/v2transapi'
sign = pile(JS_CODE).call('token', query, self.gtk)
lang = self.langdetect(query)
data = {
'from': 'en' if lang == 'en' else 'zh',
'to': 'zh' if lang == 'en' else 'en',
'query': query,
'simple_means_flag': 3,
'sign': sign,
'token': self.token,
}
try:
r = self.sess.post(url=url, data=data)
except Exception as e:
raise e
if r.status_code == 200:
json = r.json()
if 'error' in json:
raise Exception('baidu sdk error: {}'.format(json['error']))
# 998错误则意味需要重新加载主页获取新的token
return json
return None
def dictionary_by_lang(self, query,fromlang,tolang):
"""
max query count = 2
get translate result from /v2transapi
"""
url = '/v2transapi'
sign = pile(JS_CODE).call('token', query, self.gtk)
lang = self.langdetect(query)
data = {
'from': fromlang,
'to': tolang,
'query': query,
'simple_means_flag': 3,
'sign': sign,
'token': self.token,
}
try:
r = self.sess.post(url=url, data=data)
except Exception as e:
raise e
if r.status_code == 200:
json = r.json()
if 'error' in json:
raise Exception('baidu sdk error: {}'.format(json['error']))
# 998错误则意味需要重新加载主页获取新的token
print(json)
return json["trans_result"]["data"][0]['dst']
return None
def trans_baidu_en1(self,text):
the_ret = self.dictionary_by_lang(text,"zh","en")
ret1 = self.dictionary_by_lang(the_ret,"en","zh")
return ret1
