webdriver+python+selenium 登录163邮箱报错

lionhua0809

from selenium import webdriver

driver = webdriver.Firefox()
driver.get("http://mail.163.com/")
driver.find_element_by_id("lbNormal").click()
driver.find_element_by_xpath("//form/div/div/div[2]/input").send_keys("username")
driver.find_element_by_class_name("j-inputtext dlpwd").send_keys("password")
driver.find_element_by_id("dologin").click()

driver.close()

运行结果：
raceback (most recent call last):
  File "D:\Python27\Test\autotest\mail163.py", line 6, in <module>
    driver.find_element_by_xpath("//form/div/div/div[2]/input").send_keys("username")
  File "D:\Python27\lib\site-packages\selenium-2.53.1-py2.7.egg\selenium\webdriver\remote\webdriver.py", line 290, in find_element_by_xpath
    return self.find_element(by=By.XPATH, value=xpath)
  File "D:\Python27\lib\site-packages\selenium-2.53.1-py2.7.egg\selenium\webdriver\remote\webdriver.py", line 744, in find_element
    {'using': by, 'value': value})['value']
  File "D:\Python27\lib\site-packages\selenium-2.53.1-py2.7.egg\selenium\webdriver\remote\webdriver.py", line 233, in execute
    self.error_handler.check_response(response)
  File "D:\Python27\lib\site-packages\selenium-2.53.1-py2.7.egg\selenium\webdriver\remote\errorhandler.py", line 194, in check_response
    raise exception_class(message, screen, stacktrace)
NoSuchElementException: Message: Unable to locate element: {"method":"xpath","selector":"//form/div/div/div[2]/input"}
Stacktrace:
    at FirefoxDriver.prototype.findElementInternal_ (file:///c:/users/administrator/appdata/local/temp/tmphmt2c9/extensions/fxdriver@googlecode.com/components/driver-component.js:10770)
    at FirefoxDriver.prototype.findElement (file:///c:/users/administrator/appdata/local/temp/tmphmt2c9/extensions/fxdriver@googlecode.com/components/driver-component.js:10779)
    at DelayedCommand.prototype.executeInternal_/h (file:///c:/users/administrator/appdata/local/temp/tmphmt2c9/extensions/fxdriver@googlecode.com/components/command-processor.js:12661)
    at DelayedCommand.prototype.executeInternal_ (file:///c:/users/administrator/appdata/local/temp/tmphmt2c9/extensions/fxdriver@googlecode.com/components/command-processor.js:12666)
    at DelayedCommand.prototype.execute/< (file:///c:/users/administrator/appdata/local/temp/tmphmt2c9/extensions/fxdriver@googlecode.com/components/command-processor.js:12608)

我将代码中标红行改成通过id、name或class定位，都报找不到元素，请高手指点下，谢谢！

lionhua0809

若尘_51 发表于 2016-9-22 08:35
这个登录框有ifame，需要先切换ifame。

嗯，谢谢！

lionhua0809

掉渣饼 发表于 2016-9-22 09:31
因为在你定位的用户名输入框元素节点上面有个iframe,所以要先进入找个iframe中，还有因为你的用户名和密码 ...

非常感谢