Python实现自动识别并填加验证码的示例代码

1import requests
2
3def download_captcha(url):
4    response = requests.get(url)
5    with open('captcha.png', 'wb') as f:
6        f.write(response.content)

pip install pytesseract opencv-python

import cv2
import pytesseract
 
def recognize_captcha(image_path):
    # 加载图像
    image = cv2.imread(image_path)
 
    # 转换为灰度图像
    gray_image = cv2.cvtColor(image, cv2.COLOR_BGR2GRAY)
 
    # 使用高斯模糊减少噪声
    blurred_gray_image = cv2.GaussianBlur(gray_image, (5, 5), 0)
 
    # 使用二值化提高对比度
    _, binary_image = cv2.threshold(blurred_gray_image, 0, 255, cv2.THRESH_BINARY_INV | cv2.THRESH_OTSU)
 
    # 使用 PyTesseract 进行 OCR
    recognized_text = pytesseract.image_to_string(binary_image, lang='eng')
 
    return recognized_text
 
# 测试函数
if __name__ == "__main__":
    captcha_image_path = "path/to/your/captcha/image.jpg"  # 替换为您自己的验证码图像路径
    recognized_captcha = recognize_captcha(captcha_image_path)
    print("Recognized captcha:", recognized_captcha)

pip install selenium

from selenium import webdriver
from selenium.webdriver.common.keys import Keys
 
def fill_captcha_and_submit(captcha_value, form_url):
    driver = webdriver.Chrome()  # 确保ChromeDriver路径已加入环境变量或指定完整路径
    driver.get(form_url)
    
    # 假设input标签的id为'captcha_input'，submit按钮的id为'submit_button'
    captcha_input = driver.find_element_by_id('captcha_input')
    submit_button = driver.find_element_by_id('submit_button')
    
    captcha_input.send_keys(captcha_value)
    submit_button.click()
 
    # 记得关闭浏览器窗口
    driver.quit()

def main():
    captcha_url = "网页中验证码图片的URL"
    form_url = "提交表单的URL"
    
    download_captcha(captcha_url)
    captcha_text = recognize_captcha('captcha.png')
    fill_captcha_and_submit(captcha_text, form_url)
 
if __name__ == "__main__":
    main()