我用下面的代码在pubchem网站上进行搜索。我需要得到";化合物CID:";从屏幕上的搜索结果中找到号码,但我找不到。我需要帮助。
driver = webdriver.Chrome()
url = "https://pubchem.ncbi.nlm.nih.gov/"
driver.get(url)
driver.maximize_window()
searchInput = driver.find_element_by_xpath("/html/body/div[1]/div/div/main/div[1]/div/div[2]/div/div[2]/form/div/div[1]/input")
searchInput.click()
searchInput.send_keys("75-05-8")
searchInput.send_keys(Keys.ENTER)
time.sleep(2)
driver.close()
要打印文本6342,您可以使用以下定位器策略之一:
-
使用css_selector和
get_attribute("innerHTML")
:print(driver.find_element(By.CSS_SELECTOR, "a[data-label^='Featured Compound Result Secondary Link; Position:1; Page:1'] > span.breakword > span").get_attribute("innerHTML"))
-
使用xpath和text属性:
print(driver.find_element(By.XPATH, "//a[starts-with(@data-label, 'Featured Compound Result Secondary Link; Position:1; Page:1')]/span[@class='breakword']/span").text)
理想情况下,您需要诱导WebDriverWait等待可见性_of_element_located((,您可以使用以下定位器策略之一:
-
使用CSS_SELECTOR和文本属性:
driver.get("https://pubchem.ncbi.nlm.nih.gov/") WebDriverWait(driver, 20).until(EC.element_to_be_clickable((By.CSS_SELECTOR, "input[type='text'][id^='search']"))).send_keys("75-05-8" + Keys.RETURN) print(WebDriverWait(driver, 20).until(EC.visibility_of_element_located((By.CSS_SELECTOR, "a[data-label^='Featured Compound Result Secondary Link; Position:1; Page:1'] > span.breakword > span"))).text)
-
使用XPATH和
get_attribute("innerHTML")
:driver.get("https://pubchem.ncbi.nlm.nih.gov/") WebDriverWait(driver, 20).until(EC.element_to_be_clickable((By.XPATH, "//input[@type='text'][starts-with(@id, 'search')]"))).send_keys("75-05-8" + Keys.RETURN) print(WebDriverWait(driver, 20).until(EC.visibility_of_element_located((By.XPATH, "//a[starts-with(@data-label, 'Featured Compound Result Secondary Link; Position:1; Page:1')]/span[@class='breakword']/span"))).text)
-
注意:您必须添加以下导入:
from selenium.webdriver.support.ui import WebDriverWait from selenium.webdriver.common.by import By from selenium.webdriver.support import expected_conditions as EC
-
控制台输出:
6342
您可以在"如何使用Selenium-Python 检索WebElement的文本"中找到相关讨论
引用
有用文档链接:
get_attribute()
方法Gets the given attribute or property of the element.
text
属性返回The text of the element.
- 使用Selenium的文本和innerHTML之间的差异