# 用于实现智能等待页面元素的出现 # encoding = utf-8 """ __title__ = '' __author__ = 'davieyang' __mtime__ = '2018/4/21' """ from selenium.webdriver.common.by import By from selenium.webdriver.support.ui import WebDriverWait from selenium.webdriver.support import expected_conditions as EC class WaitUtil(object): def __init__(self, driver): self.locationTypeDict = { "xpath": By.XPATH, "id": By.ID, "name": By.NAME, "css_selector": By.CSS_SELECTOR, "class_name": By.CLASS_NAME, "tag_name": By.TAG_NAME, "link_text": By.LINK_TEXT, "partial_link_text": By.PARTIAL_LINK_TEXT } self.driver = driver self.wait = WebDriverWait(self.driver, 30) def presence_of_element_located(self, locationType, locatorExpression, *args): """ 显示等待页面元素出现在DOM中,但并不一定可见,存在则返回该页面元素对象 :param locatorMethod: :param locatorExpression: :param arg: :return: """ try: if locationType.lower() in self.locationTypeDict: # if self.locationTypeDict.has_key(locatorMethod.lower()): self.wait.until( EC.presence_of_element_located(( self.locationTypeDict[locationType.lower()], locatorExpression))) else: raise TypeError(u"未找到定位方式,请确认定位方法是否正确") except Exception as e: raise e def frame_to_be_available_and_switch_to_it(self, locationType, locatorExpression, *args): """ 检查frame是否存在,存在则切换进去 :param locationType: :param locatorExpression: :param arg: :return: """ try: self.wait.until( EC.frame_to_be_available_and_switch_to_it(( self.locationTypeDict[locationType.lower()], locatorExpression))) except Exception as e: # 抛出异常信息给上层调用者 raise e def visibility_element_located(self, locationType, locatorExpression, *args): """ 显示等待页面元素的出现 :param locationType: :param locatorExpression: :param arg: :return: """ try: element = self.wait.until( EC.visibility_of_element_located((self.locationTypeDict[locationType.lower()], locatorExpression))) return element except Exception as e: raise e if __name__ == "__main__": from selenium import webdriver driver = webdriver.Chrome(executable_path=r"F:\automation\webdriver\chromedriver.exe") driver.get("http://mail.126.com") # 实例化WaitUtil类 waitUtil = WaitUtil(driver) # 判断如果id = x-URS-iframe的iframe存在则切换进去 wf = waitUtil.frame_to_be_available_and_switch_to_it("id", "x-URS-iframe") # 等待页面元素xpath = //input[@name='email']的出现 wv = waitUtil.visibility_element_located("xpath", "//input[@name='email']") # 显示等待页面元素出现在DOM中,但并不一定可见,存在则返回该页面元素对象 wp = waitUtil.presence_of_element_located("xpath", "//input[@name='email']") driver.quit() """ WebDriverWait(driver,10).until(EC.title_is(u"百度一下,你就知道")) '''判断title,返回布尔值''' WebDriverWait(driver,10).until(EC.title_contains(u"百度一下")) '''判断title,返回布尔值''' WebDriverWait(driver,10).until(EC.presence_of_element_located((By.ID,'kw'))) '''判断某个元素是否被加到了dom树里,并不代表该元素一定可见,如果定位到就返回WebElement''' WebDriverWait(driver,10).until(EC.visibility_of_element_located((By.ID,'su'))) '''判断某个元素是否被添加到了dom里并且可见,可见代表元素可显示且宽和高都大于0''' WebDriverWait(driver,10).until(EC.visibility_of(driver.find_element(by=By.ID,value='kw'))) '''判断元素是否可见,如果可见就返回这个元素''' WebDriverWait(driver,10).until(EC.presence_of_all_elements_located((By.CSS_SELECTOR,'.mnav'))) '''判断是否至少有1个元素存在于dom树中,如果定位到就返回列表''' WebDriverWait(driver,10).until(EC.visibility_of_any_elements_located((By.CSS_SELECTOR,'.mnav'))) '''判断是否至少有一个元素在页面中可见,如果定位到就返回列表''' WebDriverWait(driver,10).until(EC.text_to_be_present_in_element((By.XPATH,"//*[@id='u1']/a[8]"),u'设置')) '''判断指定的元素中是否包含了预期的字符串,返回布尔值''' WebDriverWait(driver,10).until(EC.text_to_be_present_in_element_value((By.CSS_SELECTOR,'#su'),u'百度一下')) '''判断指定元素的属性值中是否包含了预期的字符串,返回布尔值''' #WebDriverWait(driver,10).until(EC.frame_to_be_available_and_switch_to_it(locator)) '''判断该frame是否可以switch进去,如果可以的话,返回True并且switch进去,否则返回False''' #注意这里并没有一个frame可以切换进去 WebDriverWait(driver,10).until(EC.invisibility_of_element_located((By.CSS_SELECTOR,'#swfEveryCookieWrap'))) '''判断某个元素在是否存在于dom或不可见,如果可见返回False,不可见返回这个元素''' #注意#swfEveryCookieWrap在此页面中是一个隐藏的元素 WebDriverWait(driver,10).until(EC.element_to_be_clickable((By.XPATH,"//*[@id='u1']/a[8]"))).click() '''判断某个元素中是否可见并且是enable的,代表可点击''' driver.find_element_by_xpath("//*[@id='wrapper']/div[6]/a[1]").click() #WebDriverWait(driver,10).until(EC.element_to_be_clickable((By.XPATH,"//*[@id='wrapper']/div[6]/a[1]"))).click() #WebDriverWait(driver,10).until(EC.staleness_of(driver.find_element(By.ID,'su'))) '''等待某个元素从dom树中移除''' #这里没有找到合适的例子 WebDriverWait(driver,10).until(EC.element_to_be_selected(driver.find_element(By.XPATH,"//*[@id='nr']/option[1]"))) '''判断某个元素是否被选中了,一般用在下拉列表''' WebDriverWait(driver,10).until(EC.element_selection_state_to_be(driver.find_element(By.XPATH,"//*[@id='nr']/option[1]"),True)) '''判断某个元素的选中状态是否符合预期''' WebDriverWait(driver,10).until(EC.element_located_selection_state_to_be((By.XPATH,"//*[@id='nr']/option[1]"),True)) '''判断某个元素的选中状态是否符合预期''' driver.find_element_by_xpath(".//*[@id='gxszButton']/a[1]").click() instance = WebDriverWait(driver,10).until(EC.alert_is_present()) '''判断页面上是否存在alert,如果有就切换到alert并返回alert的内容''' print instance.text instance.accept() """
Python&Selenium智能等待方法封装
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转载自www.cnblogs.com/davieyang/p/10071260.html
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