硒在iFrame标签后找不到元素element

Question

I'm trying to find a search box in some HTML and selenium won't find it.

I've tried the following.

driver.find_element_by_id
driver.find_element_by_class_name
driver.find_element_by_xpath
driver.find_element_by_css_selector

nothing has worked so far.

I've also gone line by line through the HTML and found the point where it stops picking up the elements, and in between the last one it can find and the first one it can't find is a text string as follows. (<> removed because otherwise I can't post it)

iframe id="iframeCenter" src="url initialise=true" width="100%" 
onload="resizePortlet()" frameborder="0" height="894"
/iframe

#document

!-- tabbedFindMaintenanceLayout.jsp --
html class="dj_quirks ... "/html etc

The part that says src="URL has been shortened for security reasons, but it was just the url of the web page I have active

The search button is located further down inside this HTML tag but my driver can't get there.

Here is the html of the search box

tr

td class="form_inputBoxTitle"><input type="text" name="search" size="20" 
value="" id="form_search"/td

input type="text" name="search" size="20" value="" id="form_search"

/tr

Now for my code :/

finding search box

search_box = driver.find_element_by_class_name('form_inputBoxTitle')
search_box.send_keys(phc)

finding iframe

iFrame = driver.find_element_by_id('iframeCenter')

finding html class

dj = driver.find_element_by_id('dj_quirks ')

iFrame finds the correct html tag as I would expect it to. search_box and dj both return the following error message.

search_box = driver.find_element_by_class_name('form_inputBoxTitle')
  File "C:\Users\webdriver.py", line 564, in find_element_by_class_name
    return self.find_element(by=By.CLASS_NAME, value=name)
  File "C:\Users\webdriver.py", line 978, in find_element
    'value': value})['value']
  File "C:\Users\webdriver.py", line 321, in execute
    self.error_handler.check_response(response)
  File "C:\Users\errorhandler.py", line 242, in check_response
    raise exception_class(message, screen, stacktrace)
selenium.common.exceptions.NoSuchElementException: Message: no such 
element: Unable to locate element: {"method":"css 
selector","selector":".form_inputBoxTitle"}
  (Session info: chrome=76.0.3809.132)

What is the issue here?

Answer 1

Try this:

search_box = driver.find_element_by_id("form_search")
search_box.send_keys("foo")