Python实现获取网页内容及自动填表单与登录功能-Toy模板网

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这篇文章主要为大家详细介绍了如何利用Python实现模拟浏览器启动，获取网页内容、自动填表单、自动登录、自动过验证码等功能，需要的可以参考一下

库
源码
知识点补充

食用前准备

python 3.10.10 #二维码的库ddddocr 需要

库

import time
import ddddocr

源码

# import threading  # 导入threading模块
# from Feishu_SendMsg import *

# Identification verification code
import time
import ddddocr


interval = 100 * 60

# def delayCall():  # 定义方法
#     SendMsg("选题 快快快!!!")

#     timer=threading.Timer(interval,delayCall)  # 每秒运行
#     timer.start()  # 执行方法
    
# if __name__ == '__main__':  #
#     t1=threading.Timer(interval,function=delayCall)  # 创建定时器
#     t1.start()  # 开始执行线程


from selenium import webdriver
from selenium.webdriver.common.by import By
from selenium.webdriver.support.ui import WebDriverWait
from selenium.webdriver.support import expected_conditions as EC
from selenium.webdriver.common.keys import Keys


# SendMsg("自动填表单")
options = webdriver.ChromeOptions()
options.add_argument('--enable-automation')
options.add_argument('--no-sandbox')
options.add_argument('--disable-extensions')
options.add_argument('--start-maximized')
options.add_argument('--disable-infobars')

prefs = {"profile.default_content_setting_values.autocomplete_enabled": 2}
options.add_experimental_option("prefs", prefs)

# SendMsg("创建 Chrome 浏览器实例")
# 创建 Chrome 浏览器实例
browser = webdriver.Chrome(options=options)

# SendMsg("打开网页")
browser.get('www.tttttttt.com')

# SendMsg("找到账号和密码框元素并输入指定字符串")
username = browser.find_element("name","username")
password = browser.find_element("name","userpass")
usercode = browser.find_element("name","usercode")
img_verifycode = browser.find_element("id","img_verifycode")

# SendMsg("自动填充账号密码")
username.send_keys("11111")
password.send_keys("11111")

verifycodeBase64 = img_verifycode.screenshot_as_base64
ocr = ddddocr.DdddOcr()
res = ocr.classification(verifycodeBase64)
usercode.send_keys(res)
# SendMsg(f"识别并填写验证码: {res}")

# SendMsg("提交表单")
password.send_keys(Keys.RETURN)
# SendMsg("登陆: 提交表单")

知识点补充

下面为大家介绍一下文中用到的ddddocr库的相关使用吧

识别验证码的python 库有很多，用起来也并不简单，ddddocr (带带弟弟ocr)库是一个简单实用的识别验证码的库，推荐给大家

ddddocr具体使用方法

import os
import ddddocr
from time import sleep
from PIL import Image
from selenium import webdriver
from selenium.webdriver.common.by import By

class GetVerificationCode:
  def __init__(self):
        self.res = None
        url = '要登录的地址'
        self.driver = webdriver.Chrome()
        self.driver.maximize_window()  # 将浏览器最大化
        self.driver.get(url)

  # 获取验证码信息
    def getVerification(self):
        # 获取当前文件的位置、并获取保存截屏的位置
        current_location = os.path.dirname(__file__)
        screenshot_path = os.path.join(current_location, "..", "VerificationCode")
        # 截取当前网页并放到自定义目录下，并命名为printscreen，该截图中有我们需要的验证码
        sleep(1)
        self.driver.save_screenshot(screenshot_path + '//' + 'printscreen.png')
        sleep(1)
        # 定位验证码
        imgelement = self.driver.find_element(By.XPATH, '验证码图片的Xpath定位')
        # 获取验证码x,y轴坐标
        location = imgelement.location
        # 获取验证码的长宽
        size = imgelement.size
        # 写成我们需要截取的位置坐标
        rangle = (int(location['x'] + 430),
                  int(location['y'] + 200),
                  int(location['x'] + size['width'] + 530),
                  int(location['y'] + size['height'] + 250))
        # 打开截图
        i = Image.open(screenshot_path + '//' + 'printscreen.png')
        # 使用Image的crop函数，从截图中再次截取我们需要的区域
        fimg = i.crop(rangle)
        fimg = fimg.convert('RGB')
        # 保存我们截下来的验证码图片，并读取验证码内容
        fimg.save(screenshot_path + '//' + 'code.png')
        ocr = ddddocr.DdddOcr()
        with open(screenshot_path + '//' + 'code.png', 'rb') as f:
            img_bytes = f.read()
        self.res = ocr.classification(img_bytes)
        print('识别出的验证码为：' + self.res)

    # 判断验证码错误时的提示信息是否存在
    def isElementPresent(self, by, value):
        try:
            element = self.driver.find_element(by=by, value=value)
        except NoSuchElementException:
            pass
            # 发生了NoSuchElementException异常，说明页面中未找到该元素，返回False
            return False
        else:
            # 没有发生异常，表示在页面中找到了该元素，返回True
            return True

  # 登录
    def login(self):
        self.getVerification()
        self.driver.find_element(By.XPATH, '用户名输入框Xpath定位').send_keys('用户名')
        self.driver.find_element(By.XPATH, '密码输入框Xpath定位').send_keys('密码')
        self.driver.find_element(By.XPATH, '验证码输入框Xpath定位').send_keys(self.res)
        sleep(1)
        self.driver.find_element(By.XPATH, '登录按钮Xpath定位').click()
        sleep(2)
    isFlag = True
        while isFlag:
            try:
                isPresent = self.isElementPresent(By.XPATH, '验证码错误时的提示信息Xpath定位')
                if isPresent is True:
                    codeText = self.driver.find_element(By.XPATH, '验证码错误时的提示信息Xpath定位').text
                    if codeText == "验证码不正确":
                        self.getVerification()
                        sleep(2)
                        self.driver.find_element(By.XPATH, '验证码输入框Xpath定位').clear()
                        sleep(1)
                        self.driver.find_element(By.XPATH, '验证码输入框Xpath定位').send_keys(self.res)
                        sleep(1)
                        self.driver.find_element(By.XPATH, '登录按钮Xpath定位').click()
                        sleep(2)
                    tips = self.driver.find_element(By.XPATH,
                                                    '未输入验证码时的提示信息Xpath定位').text
                    if tips == "请输入验证码":
                        self.getVerification()
                        sleep(2)
                        self.driver.find_element(By.XPATH, '验证码输入框Xpath定位').click()
                        sleep(1)
                        self.driver.find_element(By.XPATH, '验证码输入框Xpath定位').send_keys(self.res)
                        sleep(1)
                        self.driver.find_element(By.XPATH, '登录按钮Xpath定位').click()
                        sleep(2)
                    continue
                else:
                    print("验证码正确，登录成功！")
            except NoSuchElementException:
                pass
            else:
                isFlag = False
                
        sleep(5)
        self.driver.quit()


if __name__ == '__main__':
    GetVerificationCode().login()

识别结果

Python实现获取网页内容及自动填表单与登录功能