Question

我有一个脚本循环遍历标题的一系列元素，然后点击“下一步”加载下一系列要删除的元素。问题是“下一步”按钮的xpath在第2页上发生变化，很可能在第3页上发生。我不能使用按类查找或按ID查找，因为这些类/ ID名称不止一次出现。一旦找不到第二页上的“下一步”按钮，脚本就会出错。

while True: 
    deal_title = browser.find_elements_by_xpath("//a[@id='dealTitle']/span")
    titles = []
    for title in deal_title:
        titles.append(title.text)

    deal_link = browser.find_elements_by_xpath("//div[@class='a-row dealDetailContainer']/div/a[@id='dealTitle']")
    links = []
    for link in deal_link:
        links.append(link.get_attribute('href'))

    deal_image = browser.find_elements_by_xpath("//a[@id='dealImage']/div/div/div/img")
    images = []
    for image in deal_image:
        images.append(image.get_attribute('src'))

    deal_price = browser.find_elements_by_xpath("//div[@class='a-row priceBlock unitLineHeight']/span")
    prices = []
    for price in deal_price:
        prices.append(price.text)

    try:
        #clicks next button - this is the xpath for the page 1 button
        browser.find_element_by_xpath("//span[@class='a-declarative']/div[2]/ul/li[@class='a-last']/a").click()
    except NoSuchElementException:
    break

下面是第2页上下一个按钮的xpath：

browser.find_element_by_xpath("//span[@class='a-declarative']/div[1]/ul/li[@class='a-last']/a").click()

Answer 1

尝试替换

browser.find_element_by_xpath("//span[@class='a-declarative']/div[2]/ul/li[@class='a-last']/a").click()

与

browser.find_element_by_link_text("Next→").click()

Answer 2

你可以把它们连在一起 browser.find_element_by_xpath（＆＃34; //跨度[@class =＆＃39;一个声明性＆＃39;] / DIV [2] / UL /锂[@class =＆＃39; A-最后＆＃39;] / A | //跨度[@class =＆＃39;一个声明性＆＃39;] / DIV [1] / UL /锂[@class =＆＃39; A-最后＆＃39;] /一＆＃34）点击（）。或者你可以写一个更通用的xpath //的Li [@class =＆＃39; A-最后＆＃39;] / A

页面＃2上的下一个按钮XPath更改，不会循环

2 个答案: