维普 _自动导出xml

#!/usr/bin/python#encoding=utf-8__author__ = 'Administrator'from  bs4 import  BeautifulSoupimport seleniumimport sysimport urllibimport requestsimport timeimport reif __name__ == "__main__":    import os    from selenium import webdriver    from selenium.webdriver.support.ui import WebDriverWait    headers = {'User-Agent': 'Mozilla/5.0 (Windows NT 6.1; WOW64; rv:23.0) Gecko/20100101 Firefox/23.0'}    chromedriver = "/home/henson/Documents/pycharm/webdriver/chromedriver"    chromeOptions = webdriver.ChromeOptions()    prefs = {"download.default_directory": "/home/henson/Downloads/vp/recover"}   #下载路径    chromeOptions.add_experimental_option("prefs", prefs)    os.environ["webdriver.chrome.driver"] = chromedriver    driver = webdriver.Chrome(chromedriver,chrome_options=chromeOptions)    driver.execute_script("window.scrollTo(0, document.body.scrollHeight);")  #下载链接可改page+size    driver.get('http://qikan.cqvip.com/zk/search.aspx?from=zk_search&key=U%3D%E7%94%9F%E6%80%81%E6%B2%BB%E7%90%86%E4%B8%8E%E6%81%A2%E5%A4%8D&size=50&page=1#search-result-list')    currentURL=driver.current_url    time.sleep(2)    k=1    for j in range(3, 300):                                                         #下载选页        driver.find_element_by_xpath('//*[@id="searchop"]/div[1]/a[1]').click()  #全选        driver.find_element_by_xpath('//*[@id="searchop"]/div[1]/a[3]').click()  #导出        now_handle = driver.current_window_handle  # 获取当前窗口句柄        all_handles = driver.window_handles  # 获取所有窗口句柄        time.sleep(2)        for handle in all_handles:            if (handle != now_handle):                driver.switch_to_window(handle)        #print("new web" + driver.current_url)        driver.find_element_by_xpath('//*[@id="showinfobtn3"]').click()           #XML        driver.find_element_by_xpath('//*[@id="exportbtn"]').click()              #开始导出        driver.close()        print(now_handle)  # 输出主窗口句柄        driver.switch_to_window(now_handle)  # 返回主窗口        driver.find_element_by_xpath('//*[@id="searchop"]/div[1]/a[2]').click()         #清除        driver.find_element_by_xpath(            '//*[@id="body"]/div/div[3]/div[6]/div[2]/span[2]/a[2]').click()     #下一页        time.sleep(2)        currentURL = driver.current_url

用来获取跳转的当前窗口
now_handle = driver.current_window_handle # 获取当前窗口句柄
all_handles = driver.window_handles # 获取所有窗口句柄
设置timeout配合until来确定是否加载完成