笔记

难点：签名获取

细节：编码问题 utf-8

 

fanyi.py

 

# coding=utf-8
import requests
import json
import execjs  # 需要pip install PyExecJS
import sys

class Baidufanyi:
    def __init__(self, trans_str):
        self.trans_str = trans_str
        self.lang_detect_url = "https://fanyi.baidu.com/langdetect"
        self.trans_url = "https://fanyi.baidu.com/basetrans"
        self.headers = {"user-agent": "Mozilla/5.0 (iPhone; CPU iPhone OS 11_0 like Mac OS X) AppleWebKit/604.1.38 (KHTML, like Gecko) Version/11.0 Mobile/15A372 Safari/604.1"}
        self.sign = self.get_baidu_sign()

    def parse_url(self, url, data):  # 发送post 请求，获取响应
        response = requests.post(url, data=data, headers=self.headers)
        # print(response.content.decode())
        return json.loads(response.content.decode())

    def get_baidu_sign(self):  # 获取js生成的签名参数
        with open("BaidSign.js", encoding='utf-8') as f:
            sign = execjs.compile(f.read()).call("a", self.trans_str)
            return sign

    def get_ret(self, dict_response):
        ret = dict_response["trans"][0]['dst']
        print("结果：%s" % ret)

    def run(self):  # 实现主要逻辑
        # 1.获取语言类型
            # 1.1 准备post的url地址，post_data
        lang_detect_data = {"query": self.trans_str}
            # 1.2 发送post请求，获取相应
        lang = self.parse_url(self.lang_detect_url, lang_detect_data)["lan"]
            # 1.3 提取语言类型
        # 2.准备post的数据
        trans_data = {"query": self.trans_str, "from": "zh", "to": "en", "token": "1e6a95674719860752458b73e733e438", "sign": self.sign} if lang == "zh" else \
            {"query": self.trans_str, "from": "en", "to": "zh", "token": "1e6a95674719860752458b73e733e438", "sign": self.sign}
        # 3.发送请求，获取响应
        dict_response = self.parse_url(self.trans_url, trans_data)
        # 4.提取翻译的结果
        self.get_ret(dict_response)

if __name__ == '__main__':
    trans_str = sys.argv[1]  # "你好"
    baidu_fanyi = Baidufanyi(trans_str)
    baidu_fanyi.run()

 

 

BaiduSign.js文件

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