python 自制有道翻译工具

一、登陆有道翻译页面，分析请求

url地址：http://fanyi.youdao.com/

综合上述分析，当改变里面内容时，Form Data(向后台发送的数据)中salt、sign、ts的值在变化，其他几个没有变化

二、找到请求的JS

链接地址为：http://shared.ydstatic.com/fanyi/newweb/v1.0.14/scripts/newweb/fanyi.min.js

三、从JS中分析相关内容

四、构造Form Data 信息

#!/usr/bin/env python
#-*- coding:utf-8 -*-

import requests,time,hashlib,random

def translate(text):
    '''
    加密：sign: n.md5("fanyideskweb" + e + i + "p09@Bn{h02_BIEe]$P^nG")
    e：文本内容
    i：时间戳
    '''
    e = text
    i = int(time.time() * 1000) + random.randint(1, 10)  #构建salt
    r,y = divmod(i,10)    #根据salt构建ts,也就是r

    #构建签名
    sign = "fanyideskweb" + e + str(i) + "p09@Bn{h02_BIEe]$P^nG"
    md5 = hashlib.md5()
    md5.update(sign.encode('utf-8'))

    data = {
        "i": text,
        "from": "AUTO",
        "to": "AUTO",
        "smartresult": "dict",
        "client": "fanyideskweb",
        "salt": str(i),
        "sign": md5.hexdigest(),
        "ts":str(r),
        "doctype": "json",
        "version": "2.1",
        "keyfrom": "fanyi.web",
        "action": "FY_BY_CLICKBUTTION",
        "typoResult": "false"
        }

    url = "http://fanyi.youdao.com/translate_o?smartresult=dict&smartresult=rule"
    headers = {
        "User-Agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/66.0.3359.181 Safari/537.36",
        "Referer": "http://fanyi.youdao.com/",
        "Cookie": "[email protected]; OUTFOX_SEARCH_USER_ID_NCOO=878094596.2005905; _ntes_nnid=6783bf0af2ef0809cfacae85efdafde4,1533193798143; JSESSIONID=aaaxTWFTX_yxR8SbjAwEw; ___rl__test__cookies=1544417009120",
    }

    response = requests.post(url=url, headers=headers, data=data).json()
    result = response['translateResult'][0][0]['tgt']
    print(result)

translate('故乡')

五、利用tkinter组件构建可视化窗口

#!/usr/bin/env python
#-*- coding:utf-8 -*-
from tkinter import *
import requests,time,hashlib,random

def translate():
    '''
    加密：sign: n.md5("fanyideskweb" + e + i + "p09@Bn{h02_BIEe]$P^nG")
    e：文本内容
    i：时间戳
    '''
    entry1.delete(0, END)
    text = entry.get()


    e = text
    i = int(time.time() * 1000) + random.randint(1, 10)  #构建salt
    r,y = divmod(i,10)    #根据salt构建ts,也就是r

    #构建签名
    sign = "fanyideskweb" + e + str(i) + "p09@Bn{h02_BIEe]$P^nG"
    md5 = hashlib.md5()
    md5.update(sign.encode('utf-8'))

    data = {
        "i": text,
        "from": "AUTO",
        "to": "AUTO",
        "smartresult": "dict",
        "client": "fanyideskweb",
        "salt": str(i),
        "sign": md5.hexdigest(),
        "ts":str(r),
        "doctype": "json",
        "version": "2.1",
        "keyfrom": "fanyi.web",
        "action": "FY_BY_CLICKBUTTION",
        "typoResult": "false"
        }

    url = "http://fanyi.youdao.com/translate_o?smartresult=dict&smartresult=rule"
    headers = {
        "User-Agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/66.0.3359.181 Safari/537.36",
        "Referer": "http://fanyi.youdao.com/",
        "Cookie": "[email protected]; OUTFOX_SEARCH_USER_ID_NCOO=878094596.2005905; _ntes_nnid=6783bf0af2ef0809cfacae85efdafde4,1533193798143; JSESSIONID=aaaxTWFTX_yxR8SbjAwEw; ___rl__test__cookies=1544417009120",
    }

    response = requests.post(url=url, headers=headers, data=data).json()
    result = response['translateResult'][0][0]['tgt']
    rest.set(result)

def youdao_translate():
    # 创建窗口
    root = Tk()

    # 窗口标题
    root.title("中英互译")

    # 窗口大小、小写x
    root.geometry('390x100+500+300')

    # 标签控件
    lable = Label(root, text="请输入要翻译的内容：", font=("微软雅黑"), fg="red")
    lable.grid()
    lablel1 = Label(root, text="翻译后的内容为：", font=("微软雅黑"), fg="green")
    lablel1.grid()

    global rest
    rest = StringVar()

    # 输入控件
    global entry
    entry = Entry(root, font=("微软雅黑", 14))
    entry.grid(row=0, column=1)
    # 翻译之后的结果
    global entry1
    entry1 = Entry(root, font=("微软雅黑", 14), textvariable=rest)
    entry1.grid(row=1, column=1)

    # 按钮控件   sticky对齐方式  N S E W - 上下左右
    button = Button(root, text="翻译", font=("微软雅黑", 13), command=translate)
    button.grid(row=2, column=0, sticky=W,padx=10)
    button1 = Button(root, text="退出", font=("微软雅黑", 13), command=root.quit)
    button1.grid(row=2, column=1, sticky=E,padx=10)

    # 消息循环、显示窗口
    root.mainloop()

if __name__ == '__main__':
    youdao_translate()