urllib模块通过post请求获取数据

功能： 输入你要查找的单词，会返回相对应的结果

import urllib.request
import urllib.parse
import json


class youdaoSpider:
    def __init__(self):
        # 注意，这里http://fanyi.youdao.com/translate_o?smartresult=dict&smartresult=rule
        # 要把连接中的_o去掉，要不然会报{"errorCode":50}错误
        self.url = "http://fanyi.youdao.com/translate?smartresult=dict&smartresult=rule"
        self.headers = {"User-Agent":"Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/70.0.3538.102 Safari/537.36"}
        
    def getData(self, data):
        # post请求就要传入data
        rep = urllib.request.Request(self.url, data=data, headers=self.headers)
        # 发送请求
        res = urllib.request.urlopen(rep)
        # 获取html文本
        html = res.read().decode("utf-8")
        # 将json字符串转换成字典
        dic = json.loads(html)
        # 提取数据
        result = dic["translateResult"][0][0]["tgt"]

        print(result)
    
    def workOn(self):
        work = input("请输入要翻译的单词:")
        
        # 上传的数据以字典的形式上传
        data = {
            "i":work ,
            "from": "AUTO",
            "to": "AUTO",
            "smartresult": "dict",
            "client": "fanyideskweb",
            "salt": "1542875948524",
            "sign": "3535bd742994f3b74924927dabf24541",
            "doctype": "json",
            "version": "2.1",
            "keyfrom": "fanyi.web",
            "action": "FY_BY_REALTIME",
            "typoResult": "false",
            }
        # urlencode("字典") - > 字符串
        data = urllib.parse.urlencode(data).encode("utf-8")
        self.getData(data)
        
if __name__ == "__main__":
    youdao = youdaoSpider()
    youdao.workOn()

运行结果：

请输入要翻译的单词:hello
你好