不會深度學習的你如何實現驗證碼的高質量識別

前言：
在很多爬蟲的自動化項目中，我們難免會遇到一些需要處理驗證碼的問題，其中一種解決方案就是通過手動輸入，但這樣效率卻很慢，有沒有什麼方法能幫助我們自動識別呢？當然又，那就是打碼平臺，這裏我推薦打碼狗平臺，識別率很高，並且便宜，但是還是希望大家也包括我後來能通過深度學習的方式，建立起自己的一套識別體系，廢話不多說，那麼就開始吧！！！

不想看分部分介紹直接拉到最下面修改配置即可食用

簡單介紹打碼狗平臺(沒有廣告錢)

可以看一下下面這個介紹，然後大家註冊一下，充值積分，特別便宜我記得我那個1元錢都用了好幾個月都還沒用完

Python代碼實現

這裏我創建了一個captchaRecognize類，我將分別對類中每個部分進行講解，

初始化

因爲，打碼平臺沒有反爬機制，所以簡單下了一個User-Agent上去，加了一個判斷條件，判斷是否有有效的session傳入

    def __init__(self, s):
        if s is None:
            self.s = requests.session()
        else:
            self.s = s
        self.headers = {
            'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/70.0.3538.25 Safari/537.36 Core/1.70.3754.400 QQBrowser/10.5.4034.400',
        }

獲取打碼平臺UserKey

這個UserKey唯一標誌了你的身份

# 用於獲取打碼平臺UserKey
    def get_userKey(self, ):

        get_url = f"http://www.damagou.top/apiv1/login.html?username={username}&password={password}"
        try:
            r = requests.get(get_url, headers=self.headers)
            r.raise_for_status()
            r.encoding = r.apparent_encoding
            print("Dmagou Being Processing")
            return r.text
        except:
            print("Can't Get Userkey ", r.status_code)

獲取驗證碼

    def get_captcha_pic(self):

        get_url = url_captcha
        headers_for_captcha = headers
        try:
            r = self.s.get(get_url, headers=headers_for_captcha)
            return r.content
        except:
            pass

識別驗證碼

下面的type參數對應於打碼狗可以自己選擇不同驗證碼類型

    def get_english_captcha(self, captcha, userkey):
        base64_data = base64.b64encode(captcha)

        postUrl = 'http://www.damagou.top/apiv1/recognize.html'
        postData = {
            "image": base64_data,
            "userkey": userkey,
            "type": "1001",
        }
        try:
            r = requests.post(postUrl, data=postData, headers=self.headers)
            r.raise_for_status()
            r.encoding = r.apparent_encoding
            # print("破解驗證碼成功")
            return r.text
        except:
            pass
            # print("破解驗證碼失敗")

全部代碼

給出全部的代碼

import random
import base64
import requests

url_captcha = "這裏是獲取驗證碼的地址"
username = '打碼平臺賬戶'
password = '打碼平臺密碼'
# 下面這個是獲取驗證碼的地址的headers大家都懂爬蟲應該都知道
headers = {
    'Host': 'xxxx自己填寫',
    'Connection': 'keep-alive',
    'Cache-Control': 'max-age=0',
    'Upgrade-Insecure-Requests': '1',
    'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/70.0.3538.25 Safari/537.36 Core/1.70.3754.400 QQBrowser/10.5.4034.400'

}


class captchaRecognize:
    def __init__(self, s):
        if s is None:
            self.s = requests.session()
        else:
            self.s = s
        self.headers = {
            'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/70.0.3538.25 Safari/537.36 Core/1.70.3754.400 QQBrowser/10.5.4034.400',
        }

    def get_captcha_pic(self):

        get_url = url_captcha
        headers_for_captcha = headers
        try:
            r = self.s.get(get_url, headers=headers_for_captcha)
            return r.content
        except:
            pass

    # 用於獲取打碼平臺UserKey
    def get_userKey(self, ):

        get_url = f"http://www.damagou.top/apiv1/login.html?username={username}&password={password}"
        try:
            r = requests.get(get_url, headers=self.headers)
            r.raise_for_status()
            r.encoding = r.apparent_encoding
            print("Dmagou Being Processing")
            return r.text
        except:
            print("Can't Get Userkey ", r.status_code)

    def get_english_captcha(self, captcha, userkey):
        base64_data = base64.b64encode(captcha)

        postUrl = 'http://www.damagou.top/apiv1/recognize.html'
        postData = {
            "image": base64_data,
            "userkey": userkey,
            "type": "1001",
        }
        try:
            r = requests.post(postUrl, data=postData, headers=self.headers)
            r.raise_for_status()
            r.encoding = r.apparent_encoding
            print("破解驗證碼成功")
            return r.text
        except:
            print("破解驗證碼失敗")

    def __call__(self):
        captcha = self.get_captcha_pic()
        userKey = self.get_userKey()
        return self.get_english_captcha(captcha, userKey)


if __name__ == '__main__':
    session = requests.session()
    captchaRecognize = captchaRecognize(session)
    print(captchaRecognize())