与浏览器交互
# -*-coding:utf-8 -*-
import random
import re
import time
# 图片转换
import base64
from bs4 import BeautifulSoup
import PIL.Image as image
from selenium import webdriver
from selenium.webdriver import ActionChains
from selenium.webdriver.common.by import By
from selenium.webdriver.support import expected_conditions as EC
from selenium.webdriver.support.ui import WebDriverWait
def save_base64img(data_str, save_name):
"""
将 base64 数据转化为图片保存到指定位置
:param data_str: base64 数据，不包含类型
:param save_name: 保存的全路径
"""
img_data = base64.b64decode(data_str)
file = open(save_name, 'wb')
file.write(img_data)
file.close()
def get_base64_by_canvas(driver, class_name, contain_type):
"""
将 canvas 标签内容转换为 base64 数据
:param driver: webdriver 对象
:param class_name: canvas 标签的类名
:param contain_type: 返回的数据是否包含类型
:return: base64 数据
"""
# 防止图片未加载完就下载一张空图
bg_img = ''
while len(bg_img) < 5000:
getImgJS = 'return document.getElementsByClassName("' + class_name + '")[0].toDataURL("image/png");'
bg_img = driver.execute_script(getImgJS)
time.sleep(0.5)
# print(bg_img)
if contain_type:
return bg_img
else:
return bg_img[bg_img.find(',') + 1:]
def save_bg(driver, bg_path="bg.png", bg_class="geetest_canvas_bg geetest_absolute"):
"""
保存包含缺口的背景图
:param driver: webdriver 对象
:param bg_path: 保存路径
:param bg_class: 背景图的 class 属性
:return: 保存路径
"""
bg_img_data = get_base64_by_canvas(driver, bg_class, False)
save_base64img(bg_img_data, bg_path)
return bg_path
def save_full_bg(driver, full_bg_path="fbg.png", full_bg_class="geetest_canvas_fullbg geetest_fade geetest_absolute"):
"""
保存完整的的背景图
:param driver: webdriver 对象
:param full_bg_path: 保存路径
:param full_bg_class: 完整背景图的 class 属性
:return: 保存路径
"""
bg_img_data = get_base64_by_canvas(driver, full_bg_class, False)
save_base64img(bg_img_data, full_bg_path)
return full_bg_path
class Crack():
def __init__(self,keyword):
self.url = 'http://bj.gsxt.gov.cn/sydq/loginSydqAction!sydq.dhtml'
self.browser = webdriver.Chrome('C:\\Program Files\\Google\\Chrome\\Application\\chrome.exe')
self.wait = WebDriverWait(self.browser, 100)
self.keyword = keyword
self.BORDER = 6
def open(self):
"""
打开浏览器,并输入查询内容
"""
self.browser.get(self.url)
keyword = self.wait.until(EC.presence_of_element_located((By.ID, 'keyword_qycx')))
bowton = self.wait.until(EC.presence_of_element_located((By.CLASS_NAME, 'btn')))
keyword.send_keys(self.keyword)
bowton.click()
def get_images(self, bg_filename = 'bg.jpg', fullbg_filename = 'fullbg.jpg'):
"""
获取验证码图片
:return: 图片的location信息
"""
bg = []
fullgb = []
while bg == [] and fullgb == []:
bf = BeautifulSoup(self.browser.page_source, 'lxml')
bg = bf.find_all('div', class_ = 'gt_cut_bg_slice')
fullgb = bf.find_all('div', class_ = 'gt_cut_fullbg_slice')
bg_url = re.findall('url\(\"(.*)\"\);', bg[0].get('style'))[0].replace('webp', 'jpg')
fullgb_url = re.findall('url\(\"(.*)\"\);', fullgb[0].get('style'))[0].replace('webp', 'jpg')
bg_location_list = []
fullbg_location_list = []
for each_bg in bg:
location = {}
location['x'] = int(re.findall('background-position: (.*)px (.*)px;',each_bg.get('style'))[0][0])
location['y'] = int(re.findall('background-position: (.*)px (.*)px;',each_bg.get('style'))[0][1])
bg_location_list.append(location)
for each_fullgb in fullgb:
location = {}
location['x'] = int(re.findall('background-position: (.*)px (.*)px;',each_fullgb.get('style'))[0][0])
location['y'] = int(re.findall('background-position: (.*)px (.*)px;',each_fullgb.get('style'))[0][1])
fullbg_location_list.append(location)
urlretrieve(url = bg_url, filename = bg_filename)
print('缺口图片下载完成')
urlretrieve(url = fullgb_url, filename = fullbg_filename)
print('背景图片下载完成')
return bg_location_list, fullbg_location_list
def get_merge_image(self, filename, location_list):
"""
根据位置对图片进行合并还原
:filename:图片
:location_list:图片位置
"""
im = image.open(filename)
new_im = image.new('RGB', (260,116))
im_list_upper=[]
im_list_down=[]
for location in location_list:
if location['y'] == -58:
im_list_upper.append(im.crop((abs(location['x']),58,abs(location['x']) + 10, 166)))
if location['y'] == 0:
im_list_down.append(im.crop((abs(location['x']),0,abs(location['x']) + 10, 58)))
new_im = image.new('RGB', (260,116))
x_offset = 0
for im in im_list_upper:
new_im.paste(im, (x_offset,0))
x_offset += im.size[0]
x_offset = 0
for im in im_list_down:
new_im.paste(im, (x_offset,58))
x_offset += im.size[0]
new_im.save(filename)
return new_im
def get_merge_image(self, filename, location_list):
"""
根据位置对图片进行合并还原
:filename:图片
:location_list:图片位置
"""
im = image.open(filename)
new_im = image.new('RGB', (260,116))
im_list_upper=[]
im_list_down=[]
for location in location_list:
if location['y']==-58:
im_list_upper.append(im.crop((abs(location['x']),58,abs(location['x'])+10,166)))
if location['y']==0:
im_list_down.append(im.crop((abs(location['x']),0,abs(location['x'])+10,58)))
new_im = image.new('RGB', (260,116))
x_offset = 0
for im in im_list_upper:
new_im.paste(im, (x_offset,0))
x_offset += im.size[0]
x_offset = 0
for im in im_list_down:
new_im.paste(im, (x_offset,58))
x_offset += im.size[0]
new_im.save(filename)
return new_im
def is_pixel_equal(self, img1, img2, x, y):
"""
判断两个像素是否相同
:param image1: 图片1
:param image2: 图片2
:param x: 位置x
:param y: 位置y
:return: 像素是否相同
"""
# 取两个图片的像素点
pix1 = img1.load()[x, y]
pix2 = img2.load()[x, y]
threshold = 60
if (abs(pix1[0] - pix2[0] < threshold) and abs(pix1[1] - pix2[1] < threshold) and abs(pix1[2] - pix2[2] < threshold)):
return True
else:
return False
def get_gap(self, img1, img2):
"""
获取缺口偏移量
:param img1: 不带缺口图片
:param img2: 带缺口图片
:return:
"""
left = 43
for i in range(left, img1.size[0]):
for j in range(img1.size[1]):
if not self.is_pixel_equal(img1, img2, i, j):
left = i
return left
return left
def get_track(self, distance):
"""
根据偏移量获取移动轨迹
:param distance: 偏移量
:return: 移动轨迹
"""
# 移动轨迹
track = []
# 当前位移
current = 0
# 减速阈值
mid = distance * 4 / 5
# 计算间隔
t = 0.2
# 初速度
v = 0
while current < distance:
if current < mid:
# 加速度为正2
a = 2
else:
# 加速度为负3
a = -3
# 初速度v0
v0 = v
# 当前速度v = v0 + at
v = v0 + a * t
# 移动距离x = v0t + 1/2 * a * t^2
move = v0 * t + 1 / 2 * a * t * t
# 当前位移
current += move
# 加入轨迹
track.append(round(move))
return track
def get_slider(self):
"""
获取滑块
:return: 滑块对象
"""
while True:
try:
slider = self.browser.find_element_by_xpath("//div[@class='gt_slider_knob gt_show']")
break
except:
time.sleep(0.5)
return slider
def move_to_gap(self, slider, track):
"""
拖动滑块到缺口处
:param slider: 滑块
:param track: 轨迹
:return:
"""
ActionChains(self.browser).click_and_hold(slider).perform()
while track:
x = random.choice(track)
ActionChains(self.browser).move_by_offset(xoffset=x, yoffset=0).perform()
track.remove(x)
time.sleep(0.5)
ActionChains(self.browser).release().perform()
def crack(self):
# 打开浏览器
self.open()
# 保存的图片名字
bg_filename = 'bg.jpg'
fullbg_filename = 'fullbg.jpg'
# 获取图片
bg_location_list, fullbg_location_list = self.get_images(bg_filename, fullbg_filename)
# 根据位置对图片进行合并还原
# 方法1
# bg_img = self.get_merge_image(bg_filename, bg_location_list)
# fullbg_img = self.get_merge_image(fullbg_filename, fullbg_location_list)
# 方法2
bg_img = save_bg(self.browser)
full_bg_img = save_full_bg(self.browser)
# 获取缺口位置
# 方法1
# gap = self.get_gap(fullbg_img, bg_img)
# 方法2
gap = self.get_gap(image.open(full_bg_img), image.open(bg_img))
print('缺口位置', gap)
track = self.get_track(gap-self.BORDER)
print('滑动滑块')
print(track)
# # 点按呼出缺口
# slider = self.get_slider()
# # 拖动滑块到缺口处
# self.move_to_gap(slider, track)
if __name__ == '__main__':
print('开始验证')
crack = Crack(u'中国移动')
crack.crack()
print('验证成功')
