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python解决滑动验证码方案

news 2026/3/28 19:06:30

1.获取需要滑动的图片

import base64


if safe_query(page, '//*[contains(text(),"向右滑动完成验证")]'):target_img = safe_query(page, '//*[@class="verify-sub-block"]/img')if not target_img:continuetarget_b64 = target_img.get_attribute("src").split(";base64,", 1)[-1]target_bytes = base64.b64decode(target_b64.encode())

2.获取滑动背景图片

background_img = safe_query(page, '//*[@class="verify-img-panel"]/img')if not background_img:continuebackground_b64 = background_img.get_attribute("src").split(";base64,", 1)[-1]background_bytes = base64.b64decode(background_b64.encode())

3.计算滑块与目标位置距离

import cv2
import numpy
import numpy as np
from io import BytesIOdef match_slider_from_bytes(bg_bytes: bytes, slider_bytes: bytes, debug=False) -> int:bg_array = np.frombuffer(bg_bytes, np.uint8)slider_array = np.frombuffer(slider_bytes, np.uint8)bg = cv2.imdecode(bg_array, cv2.IMREAD_GRAYSCALE)slider = cv2.imdecode(slider_array, cv2.IMREAD_GRAYSCALE)# 边缘检测bg_edge = cv2.Canny(bg, 100, 200)slider_edge = cv2.Canny(slider, 100, 200)# 模板匹配result = cv2.matchTemplate(bg_edge, slider_edge, cv2.TM_CCOEFF_NORMED)_, max_val, _, max_loc = cv2.minMaxLoc(result)return max_loc[0]  # 返回x坐标

distance = match_slider_from_bytes(background_bytes, target_bytes, False)
ii = "距离:{}".format(distance)
print(ii)

核心流程：字节数据→NumPy 数组→灰度图→边缘检测→模板匹配→提取 X 坐标，全程围绕 “精准找到滑块位置” 展开。
关键优化：转灰度图 + 边缘检测，剔除了颜色、亮度等干扰因素，让模板匹配只关注滑块的轮廓特征，准确率更高。
适用场景：主要用于自动化操作中破解滑块验证码，返回的 X 坐标可直接用于控制滑块拖动的距离。

4.模拟人为滑动

def human_like_drag(page, slider, distance: int):box = slider.bounding_box()if box is None:raise Exception("未能获取滑块坐标")start_x = box["x"] + box["width"] / 2start_y = box["y"] + box["height"] / 2page.mouse.move(start_x, start_y)page.mouse.down()current_x = start_xtotal_steps = 3for i in range(total_steps):step = (distance / total_steps) * random.uniform(0.9, 1.1)current_x += stepjitter_y = start_y + random.uniform(-0.5, 0.5)page.mouse.move(current_x, jitter_y)time.sleep(random.uniform(0.01, 0.03))page.mouse.up()slider_block = safe_query(page, '//*[@class="verify-move-block"]')if not slider_block:continue
human_like_drag(page, slider_block, distance)