selenium 抓取京东商品

案例

from selenium import webdriver
from selenium.webdriver.common.keys import Keys  # 键盘按键操作
import time


def get_goods(driver):
    try:
        goods = driver.find_elements_by_class_name('gl-item')
        for good in goods:
            detail_url = good.find_element_by_tag_name('a').get_attribute('href')
            p_name = good.find_element_by_css_selector('.p-name em').text.replace('\n', '')
            price = good.find_element_by_css_selector('.p-price i').text
            p_commit = good.find_element_by_css_selector('.p-commit a').text
            msg = '''
            商品 : %s
            链接 : %s
            价钱 ：%s
            评论 ：%s
            ''' % (p_name, detail_url, price, p_commit)
            print(msg, end='\n\n')

        button = driver.find_element_by_partial_link_text('下一页')
        button.click()
        time.sleep(1)
        get_goods(driver)
    except Exception:
        pass


def spider(url, keyword):
    chrome_options = webdriver.ChromeOptions()
    # 使用headless无界面浏览器模式
    # 启动浏览器，获取网页源代码
    chrome_options.add_argument('--headless')
    chrome_options.add_argument('--disable-gpu')
    driver = webdriver.Chrome(chrome_options=chrome_options)
    driver.get(url)
    driver.implicitly_wait(3)  # 使用隐式等待
    try:
        input_tag = driver.find_element_by_id('key')
        input_tag.send_keys(keyword)
        input_tag.send_keys(Keys.ENTER)
        get_goods(driver)
    finally:
        driver.close()


if __name__ == '__main__':
    spider('https://www.jd.com/', keyword='java')

# 导入库
from selenium import webdriver
import time


def jd_crawler():
    # executable_path 用于指定driver存放路径
    browser = webdriver.Chrome(executable_path=r"E:\chromedriver.exe")
    # 打开京东官网
    browser.get('https://www.jd.com/')
    # browser.find_element_by_id("kw").send_keys("python selenium")
    # 获取输入框对象
    search = browser.find_element_by_xpath('//*[@id="key"]')
    # 输入想要搜索的关键词,如"ps5国行"
    search.send_keys('ps5国行')
    # 获取搜索按钮对象并单击
    browser.find_element_by_xpath('//*[@id="search"]/div/div[2]/button').click()
    # 将滚动条移动到页面底部，用于加载所有信息
    javascript = "var q=document.documentElement.scrollTop=50000"
    # 执行 javascript 移动滚动条
    browser.execute_script(javascript)
    # 等待3秒，有些异步加载的数据加载慢
    time.sleep(3)
    # 通过查看页面源码得到金额的 xpath 路径，并获取金额
    prices = browser.find_elements_by_xpath('//*[@id="J_goodsList"]/ul/li/div/div[2]/strong/i')
    # 通过查看页面源码得到商品标题的 xpath 路径，并获取商品标题
    names = browser.find_elements_by_xpath('//*[@id="J_goodsList"]/ul/li/div/div[3]/a/em')
    # 遍历打印出当前页所有标题和金额
    for name, price in zip(names, prices):
        print(name.text.replace('\n', ''), price.text)
    # 退出浏览器
    browser.quit()

if __name__ == '__main__':
    jd_crawler()

https://python-selenium-zh.readthedocs.io/zh_CN/latest/

https://www.cnblogs.com/0bug/p/12165370.html

https://www.cnblogs.com/TankXiao/p/5222238.html#step