Javascript 如何在Python中使用Selenium找到找到所需元素的正确方法？

目标：

<li><a href="javascript:void(0);" ng-click="vm.exportData('csv')"><i class="fa fa-file-text"></i> csv</a></li>

我写的代码是：

LINK = "http://e-licitatie.ro/pub/notices/contract-award-notices/list/3/1"
PATH = "/Users/ultiplex/Documents/WORKSPACE/insightout/chromedriver"
DRIVER = webdriver.Chrome(PATH)
DELAY = 30

def wait(delay: int, xpath: str) -> None: 
    try:
        WebDriverWait(DRIVER, delay).until(EC.invisibility_of_element_located((By.XPATH, "//div[@class='block-ui-overlay']")))
        print('Overlay bypassed')
        WebDriverWait(DRIVER, delay).until(EC.presence_of_element_located((By.XPATH, xpath)))
        print(f"Element {xpath} found")
    except: 
        print("Error")

def load_link(link: str) -> None: 
    DRIVER.get(LINK)
    print("Link loaded")    

def click(xpath: str, delay: int) -> None: 
    wait(delay, xpath)
    DRIVER.find_element_by_xpath(xpath).click()
    print("Clicked")

def filter(fr_date: str, to_date: str) -> None: 
    DRIVER.find_element_by_xpath("//input[@placeholder='De la data']").send_keys(fr_date)
    DRIVER.find_element_by_xpath("//input[@placeholder='Pana la data']").send_keys(to_date)
    print("Filter selected")

if __name__ == "__main__":
    load_link(LINK)
    click("//button[@class='pull-right btn btn-default']", DELAY)
    filter("31/03/2020", "01/04/2020")
    click("//button[@class='pull-right margin-left-5 btn btn-entity']", DELAY)

单击在上面提到的示例中起作用，但我找不到方法使其在最后一步导出中起作用

请支持

试试下面的xpath

(//ul[@class='dropdown-menu'][2]//a)[3]

或

尝试下面的xpath

(//ul[@class='dropdown-menu'][2]//a)[3]

或

---

您需要首先单击导出链接以查看列表元素，然后才能单击csv链接。单击搜索后添加两行

#Click on Export link
WebDriverWait(driver,10).until(EC.element_to_be_clickable((By.XPATH,"//a[@class='darkorange dropdown-toggle' and contains(.,'Export')]"))).click()
#Click on csv link
WebDriverWait(driver,10).until(EC.element_to_be_clickable((By.XPATH,"//ul[@class='dropdown-menu']//li//a[contains(.,'csv')]"))).click()

完整代码块

from selenium import webdriver
from selenium.webdriver.support.ui import WebDriverWait
from selenium.webdriver.common.by import By
from selenium.webdriver.support import expected_conditions as EC

driver=webdriver.Chrome()
driver.get("http://e-licitatie.ro/pub/notices/contract-award-notices/list/3/1")
WebDriverWait(driver,10).until(EC.element_to_be_clickable((By.XPATH,"//button[@class='pull-right btn btn-default']"))).click()
WebDriverWait(driver,10).until(EC.element_to_be_clickable((By.XPATH,"//input[@placeholder='De la data']"))).send_keys("31/03/2020")
WebDriverWait(driver,10).until(EC.element_to_be_clickable((By.XPATH,"//input[@placeholder='Pana la data']"))).send_keys("01/04/2020")
WebDriverWait(driver,10).until(EC.element_to_be_clickable((By.XPATH,"//button[@class='pull-right margin-left-5 btn btn-entity']"))).click()
WebDriverWait(driver,10).until(EC.element_to_be_clickable((By.XPATH,"//a[@class='darkorange dropdown-toggle' and contains(.,'Export')]"))).click()
WebDriverWait(driver,10).until(EC.element_to_be_clickable((By.XPATH,"//ul[@class='dropdown-menu']//li//a[contains(.,'csv')]"))).click()

---

您需要首先单击导出链接以查看列表元素，然后才能单击csv链接。单击搜索后添加两行

#Click on Export link
WebDriverWait(driver,10).until(EC.element_to_be_clickable((By.XPATH,"//a[@class='darkorange dropdown-toggle' and contains(.,'Export')]"))).click()
#Click on csv link
WebDriverWait(driver,10).until(EC.element_to_be_clickable((By.XPATH,"//ul[@class='dropdown-menu']//li//a[contains(.,'csv')]"))).click()

完整代码块

from selenium import webdriver
from selenium.webdriver.support.ui import WebDriverWait
from selenium.webdriver.common.by import By
from selenium.webdriver.support import expected_conditions as EC

driver=webdriver.Chrome()
driver.get("http://e-licitatie.ro/pub/notices/contract-award-notices/list/3/1")
WebDriverWait(driver,10).until(EC.element_to_be_clickable((By.XPATH,"//button[@class='pull-right btn btn-default']"))).click()
WebDriverWait(driver,10).until(EC.element_to_be_clickable((By.XPATH,"//input[@placeholder='De la data']"))).send_keys("31/03/2020")
WebDriverWait(driver,10).until(EC.element_to_be_clickable((By.XPATH,"//input[@placeholder='Pana la data']"))).send_keys("01/04/2020")
WebDriverWait(driver,10).until(EC.element_to_be_clickable((By.XPATH,"//button[@class='pull-right margin-left-5 btn btn-entity']"))).click()
WebDriverWait(driver,10).until(EC.element_to_be_clickable((By.XPATH,"//a[@class='darkorange dropdown-toggle' and contains(.,'Export')]"))).click()
WebDriverWait(driver,10).until(EC.element_to_be_clickable((By.XPATH,"//ul[@class='dropdown-menu']//li//a[contains(.,'csv')]"))).click()

---

第一个：引发异常（message，screen，stacktrace）selenium.common.exceptions.NoSuchElementException:message:没有这样的元素：找不到元素：{“方法”：“xpath”，“选择器”：“（//ul ul[@class='dropdown-menu'][2]//a）[3]}第二个：引发异常（message screen，stacktrace）selenium.common.exceptions.NoSuchElementException:Message:没有这样的元素：找不到元素：{“方法”：“xpath”，“选择器”：”//ul[@class='dropdown-menu'][2]//a[normalize space（.）='csv']}我知道页面上有3个“dropdown menu”。这对你的建议有影响吗？你必须针对第二个下拉菜单。（用于PDF导出）：

（//ul[@class=“dropdown menu”]）[2]/li[2]/a

最短形式：

（//a[contains（@ng click，'PDF'）]）[1]

在第一个XPath中将'li[2]'替换为'li[3]'，如果您希望使用csv而不是PDF导出，则将'PDF'替换为'csv'。第一：引发异常类（消息、屏幕、堆栈跟踪）selenium.common.exceptions.NoSuchElementException:Message:没有这样的元素：无法定位元素：{“方法”：“xpath”，“选择器”：“（//ul[@class='dropdown-menu'][2]//a][3]”}秒：引发异常类（Message，screen，stacktrace）selenium.common.exceptions.NoSuchElementException:Message:没有这样的元素：无法定位元素：{“方法”：“xpath”、“选择器”：”//ul[@class='dropdown-menu'][2]//a[normalize space（..='csv']）我知道页面上有3个“dropdown menu”。这对您的建议有影响吗？您必须针对第二个下拉菜单。这应该可以（用于PDF导出）：

（//ul ul class='dropdown-menu']）[2]/li[2]/a

最短形式：

（//a[contains>）（@ng click，'pdf'）][1]

如果你想要csv而不是pdf导出，那么在第一个XPath中将'li[2]'替换为'li[3]'，将'pdf'替换为'csv'.没有什么比一个明显的事实更具欺骗性了。谢谢你，善良的先生！