源码：
# coding=utf-8
# selenium二次封装
from selenium import webdriver
from selenium.webdriver.common.action_chains import ActionChains # 处理鼠标事件
from selenium.webdriver.support.select import Select # 用于处理下拉框
from selenium.common.exceptions import * # 用于处理异常
from selenium.webdriver.support import expected_conditions as EC
from selenium.webdriver.support.ui import WebDriverWait # 用于处理元素等待
from PIL import Image, ImageEnhance
import pytesseract, re
import time
import sys
# reload(sys)
# sys.setdefaultcoding('utf-8')
def browser(browser):
try:
if browser == "chrome":
driver = webdriver.Chrome()
return driver
elif browser == "firefox":
driver = webdriver.Firefox()
return driver
elif browser == "ie":
driver == webdriver.Ie()
return driver
elif browser == "phantomjs":
driver = webdriver.PhantomJS()
return driver
else:
print("Not found this browser, You can enter 'chrome','firefox','ie' or 'phantomjs'")
except Exception as msg:
print
"%s" % msg
class Action(object):
def __init__(self, driver):
self.driver = driver
def open(self, url, title='', timeout=10):
u"""打开浏览器，并最大化，判断title是否为预期"""
self.driver.get(url)
self.driver.maximize_window()
try:
WebDriverWait(self.driver, timeout, 1).until(EC.title_contains(title))
except TimeoutException:
print("open %s title error" % url)
except Exception as msg:
print("Error:%s" % msg)
def find_element(self, locator, timeout=10):
u"""定位元素，参数locator为原则"""
try:
element = WebDriverWait(self.driver, timeout, 1).until(EC.presence_of_element_located(locator))
return element
except:
print("%s 页面未找到元素 %s" % (self, locator))
def find_elements(self, locator, timeout=10):
u"""定位一组元素"""
elements = WebDriverWait(self.driver, timeout, 1).until(EC.presence_of_all_elements_located(locator))
return elements
def click(self, locator):
u"""封装点击操作"""
element = self.find_element(locator)
element.click()
def send_key(self, locator, text):
u"""发送文本后清除内容"""
element = self.find_element(locator)
element.clear()
element.send_keys(text)
def is_text_in_element(self, text, locator, timeout=10):
u"""判断是否定位到元素"""
try:
result = WebDriverWait(self.driver, timeout, 1).until(EC.text_to_be_present_in_element(locator, text))
except TimeoutException:
print
u"元素未定位到:" + str(locator)
return False
else:
return result
def is_title(self, title, timeout=10):
u"""判断title完全相等"""
result = WebDriverWait(self.driver, timeout, 1).until(EC.title_is(title))
return result
def is_title_contains(self, title, timeout=10):
u"""判断是否包含title"""
result = WebDriverWait(self.driver, timeout, 1).until(EC.title_contains(title))
return result
def is_select(self, locator, timeout=10):
u"""判断元素是否被选中"""
result = WebDriverWait(self.driver, timeout, 1).until(EC.element_located_to_be_selected(locator))
return result
def is_select_be(self, locator, timeout=10, selected=True):
u"""判断元素的状态"""
return WebDriverWait(self.driver, timeout, 1).until(EC.element_located_selection_state_to_be(locator, selected))
def is_alert_present(self, timeout=10):
u"""判断页面有无alert弹出框，有alert返回alert，无alert返回FALSE"""
try:
return WebDriverWait(self.driver, timeout, 1).until(EC.alert_is_present())
except:
print "No Alert Present"
def is_visibility(self, locator, timeout=10):
u"""判断元素是否可见，可见返回本身，不可见返回FALSE"""
return WebDriverWait(self.driver, timeout, 1).until(EC.visibility_of_element_located(locator))
def is_invisibility(self, locator, timeout=10):
u"""判断元素是否可见，不可见，未找到元素返回True"""
return WebDriverWait(self.driver, timeout, 1).until(EC.invisibility_of_element_located(locator))
def is_clickable(self, locator, timeout=10):
u"""判断元素是否可以点击，可以点击返回本身，不可点击返回FALSE"""
return WebDriverWait(self.driver, timeout, 1).until(EC.element_to_be_clickable(locator))
def is_located(self, locator, timeout=10):
u"""判断元素是否定位到（元素不一定是可见），如果定位到返回Element，未定位到返回FALSE"""
return WebDriverWait(self.driver, timeout, 1).until(EC.presence_of_element_located(locator))
def move_is_element(self, locator):
u"""鼠标悬停操作"""
element = self.find_element(locator)
ActionChains(self.driver).move_to_element(element).perform()
def back(self):
u"""返回到旧的窗口"""
self.driver.back()
def forward(self):
u"""前进到新窗口"""
self.driver.forward()
def close(self):
u"""关闭窗口"""
self.driver.close()
def quit(self):
u"""关闭driver和所有窗口"""
self.driver.quit()
def get_title(self):
u"""获取当前窗口的title"""
return self.driver.title
def get_current_url(self):
u"""获取当前页面url"""
return self.driver.current_url
def get_text(self, locator):
u"""获取文本内容"""
return self.find_element(locator).text
def get_browser_log_level(self):
u"""获取浏览器错误日志级别"""
lists = self.driver.get_log('browser')
list_value = []
if lists.__len__() != 0:
for dicts in lists:
for key, value in dicts.items():
list_value.append(value)
if 'SEVERE' in list_value:
return "SEVERE"
elif 'WARNING' in list_value:
return "WARNING"
return "SUCCESS"
def get_attribute(self, locator, name):
u"""获取属性"""
return self.find_element(locator).get_attribute(name)
def js_execute(self, js):
u"""执行js"""
return self.driver.execute_script(js)
def js_fours_element(self, locator):
u"""聚焦元素"""
element = self.find_element(locator)
self.driver.execute_script("arguments[0].scrollIntoView();", element)
def js_scroll_top(self):
u"""滑动到页面顶部"""
js = "window.scrollTo(0,0)"
self.driver.execute_script(js)
def js_scroll_end(self):
u"""滑动到页面底部"""
js = "window.scrollTo(0, document.body.scrollHeight)"
self.driver.execute_script(js)
def select_by_index(self, locator, index):
u"""通过所有index，0开始,定位元素"""
element = self.find_element(locator)
Select(element).select_by_index(index)
def select_by_value(self, locator, value):
u"""通过value定位元素"""
element = self.find_element(locator)
Select(element).select_by_value(value)
def select_by_text(self, locator, text):
u"""通过text定位元素"""
element = self.find_element(locator)
Select(element).select_by_visible_text(text)
def get_verify_code(self, locator):
u"""获取图片验证码"""
# 验证码图片保存地址
screenImg = "D:/image/verifyCode.png"
# 浏览器页面截图
self.driver.get_screenshot_as_file(screenImg)
# 定位验证码大小
location = self.find_element(locator).location
size = self.find_element(locator).size
left = location['x']
top = location['y']
right = location['x'] + size['width']
bottom = location['y'] + size['height']
# 从文件读取截图，截取验证码位置再次保存
img = Image.open(screenImg).crop((left, top, right, bottom))
img.convert('L') # 转换模式：L|RGB
img = ImageEnhance.Contrast(img) # 增加对比度
img = img.enhance(2.0) # 增加饱和度
img.save(screenImg)
# 再次读取验证码
img = Image.open(screenImg)
time.sleep(1)
code = pytesseract.image_to_string(img)
return code
if __name__ == '__main__':
login_button = ("css selector", "input[id='proxy_login'][class='login_btn']")
driver = browser("chrome")
driver = Action(driver)
driver.open("http://portal.mindray.com")
driver.click(login_button)
time.sleep(3)
if driver.is_alert_present():
print driver.is_alert_present()
print driver.is_alert_present().text
print driver.is_alert_present().accept()
driver.quit()
本篇博客来源于百度阅读《selenium webdriver 基于python源码案例》未经允许禁止转载，仅供参考学习使用。如需购买完整版请链接:https://yuedu.baidu.com/search?word=selenium+webdriver&pbook=0
