Python3 有道云翻译反爬虫

反爬虫原理取自下面这篇文章

/nunchakushuang/article/details/75294947

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大佬图挂了，我自己补充下

右键查看源码 搜索.js文件 各个js文件中有salt 的是我们需要 最终排查到fanyi.min.js文件

美化后找到关键代码

这样就顺利知道了 salt sign的值

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实验之后发现有道云做了部分更改，现将变更的内容及代码贴出如下：

1.chrome F12 追踪post请求

发现除了上述链接文章中提出的 salt sign 之外，还有ts 字段是变化的

ts的值是salt的值减去最后一位

2.headers 如果只保留User-Agent字段 会报 {‘errorCode’: 50}

3.查询语句 和 查询单词 返回结果结构不同

import requestsimport jsonimport timeimport randomimport hashlibdef main():while True:url = '/translate_o?smartresult=dict&smartresult=rule'form = {'i': 'hello','from': 'AUTO','to': 'AUTO','smartresult': 'dict','client': 'fanyideskweb','salt': '15546457655690','sign': 'ebfa6cf4a5e08a0e60068545270d662a','ts': '1554642745594','bv': 'd6c3cd962e29b66abe48fcb8f4dd7f7d','doctype': 'json','version': '2.1','keyfrom': 'fanyi.web','action': 'FY_BY_REALTlME','typoResult': 'false'}headers = {'Accept': 'application/json, text/javascript, */*; q=0.01','Accept-Encoding': 'gzip, deflate','Accept-Language': 'zh-CN,zh;q=0.9','Connection': 'keep-alive','Content-Length': '255','Content-Type': 'application/x-www-form-urlencoded; charset=UTF-8','Cookie': 'OUTFOX_SEARCH_USER_ID=1658584979@10.169.0.84; OUTFOX_SEARCH_USER_ID_NCOO=1097007475.90215; JSESSIONID=aaa-boq2ULGWp89ZhV6Nw; ___rl__test__cookies=1554690491011','Host': '','Origin': '','Referer': '/','User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/73.0.3683.86 Safari/537.36','X-Requested-With': 'XMLHttpRequest'}content = input('请输入需要翻译的句子：')#content = 'i need help now'#content = 'hello'if content == '':print("拜拜~\n")breaku = 'fanyideskweb'd = contentf = str(int(time.time()*1000) + random.randint(1,10))c = '1L5ja}w$puC.v_Kz3@yYn' #从fanyi.js中查到sign = hashlib.md5((u + d + f + c).encode('ascii')).hexdigest()form['salt'] = fform['sign'] = signform['i'] = contentform['ts'] = f[0:(len(f)-1)]response = requests.post(url , data = form , headers = headers)response.encoding = response.apparent_encodingresult = response.json()#print( result)if result.get('smartResult') is None :print(result['translateResult'][0][0]['tgt'])else:print( result['smartResult']['entries'][1])if __name__ == '__main__':main()

最后，欢迎各位大佬交流改进?