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python之按 ID 查找的 Selenium Web 驱动程序问题

2025年05月04日39飞鱼

这是我第一次使用 Selenium Web 驱动程序(与 Python)，我尝试转到搜索框，输入内容并点击提交。

相关的 HTML 看起来像:

<iframe id="mainFrame" class="" width="100%" height="" frameborder="0" title="Main content frame" onload="initFrame();" scrolling 
 
.... 
 
<tr> 
 
    <td style="vertical-align:middle;"> 
         <input id="terms" type="text" onblur="RevertText(this,'Enter Search Terms');" onfocus="AllowType(this,'Enter Search Terms')" value="Enter Search Terms" style="color: rgb(164, 164, 164);"></input> 
    </td> 
    <td style="vertical-align:middle;"> 
         <input id="srchButt" class="buttAcdmicOne" type="submit" value="Search"></input> 
    </td> 
</tr>

我的代码是这样的:

driver.switch_to.frame("mainFrame") 
elem = driver.find_element_by_id("terms") 
elem.send_keys("Test")

但这是行不通的，我也不知道为什么不行……(可能有多个带有术语 ID 的东西？)

编辑:

我收到的错误是:

selenium.common.exceptions.NoSuchElementException: Message: Unable to locate element: {"method":"id","selector":"terms"}

我收到的新错误是:

selenium.common.exceptions.NoSuchFrameException: Message: no such frame: element is not a frame 


<!DOCTYPE html> 
 
<html xmlns="_http://www.w3.org/1999/xhtml" webdriver="true"> 
 
<head></head> 
 
<body onload="init();" style="overflow:auto;"> 
  <div id="overlay" class="" style="height: 0px;"></div> 
  <!-- 
 
         For Modal Popup  
 
        --> 
  <div style="width:938px;margin-left:30px;"></div> 
  <input id="toolBarStatus" type="hidden" value="expanded" name="toolBarStatus"></input> 
  <input id="hotTopictarget" type="hidden" value="" name="hotTopictarget"></input> 
  <input id="idxTms" type="hidden" name="idxTms" value=""></input> 
  <input id="srchWidgFrm" type="hidden" name="srchWidgFrm"></input> 
  <input id="isUseRelChkd" type="hidden" name="isUseRelChkd"></input> 
  <input id="actionTkn" type="hidden" name="actionTkn"></input> 
  <input id="advSrcs" type="hidden" value="" name="advSrcs"></input> 
  <input id="advSrcNms" type="hidden" value="" name="advSrcNms"></input> 
  <input id="prevSearchTerms" type="hidden" name="prevSearchTerms"></input> 
  <input id="segListAll" type="hidden" value="" name="segListAll"></input> 
  <input id="isLoaded" type="hidden" name="isLoaded"></input> 
  <input id="defaultSrcs" type="hidden" value="270077,11059,8411,270944" name="defaultSrcs"></input> 
  <input id="prevSrcsChkd" type="hidden" name="prevSrcsChkd"></input> 
  <input id="srcsChkd" type="hidden" value="270077,11059,8411,270944" name="srcsChkd"></input> 
  <input id="noSrcs" type="hidden" value="" name="noSrcs"></input> 
  <input id="prevDates" type="hidden" value="" name="prevDates"></input> 
  <input id="prevSegs" type="hidden" value="" name="prevSegs"></input> 
  <div align="left" style="width:98%;height:25px;"></div> 
  <iframe id="mainFrame" class="" width="100%" height="" frameborder="0" title="Main content frame" onload="initFrame();" scrolling="no" src="form_main_search.asp" style="height: 721px;" name="mainFrame"> 
 
    #document 
    <!DOCTYPE html> 
    <html xmlns="http://www.w3.org/1999/xhtml" webdriver="true"> 
 
    <head></head> 
 
    <body onunload="cleanUp();" onload="init();initAdvance();parent.resizeIframe();" style="height:98%;"> 
      <table style="width:100%;height:auto;"> 
        <tbody> 
          <tr> 
            <td style="width: 170px;height:100%;"></td> 
            <td> 
              <!-- 
 
                         Main Search Starts  
 
                        --> 
              <div align="left" style="width:668px;height:100%;"> 
                <!-- 
 
                             General Search Starts  
 
                            --> 
                <div id="generalSearch" align="left" style="width:662px;"> 
                  <form id="searchForm" autocomplete="off" onsubmit="validateSearch(this);return false;" action="" method="get" name="searchForm"> 
 
                    <table style="width:100%;height:100%;"> 
                      <tbody> 
                        <tr></tr> 
                        <tr> 
                          <td style="width:662px;height:51px;" colspan="3"> 
                            <div id="searchDiv_2"> 
                              <table align="center" style="width:646px;height:100%;"> 
                                <tbody> 
                                  <tr> 
                                    <td style="vertical-align:middle;"> 
                                      <input id="terms" type="text" onblur="RevertText(this,'Enter Search Terms');" onfocus="AllowType(this,'Enter Search Terms')" value="Enter Search Terms" style="color: rgb(164, 164, 164);"></input> 
 
                                    </td> 
                                    <td style="vertical-align:middle;"> 
                                      <input id="srchButt" class="buttAcdmicOne" type="submit" value="Search"></input> 
                                    </td> 
                                  </tr> 
                                </tbody> 
                              </table> 
                            </div> 
                          </td> 
                        </tr> 
                        <tr></tr> 
                      </tbody> 
                    </table> 
                  </form> 
                </div> 
                <!-- 
 
                     General Search Ends  
 
                    --> 
                <!-- 
 
                     Message Box Starts  
 
                    --> 
                <div id="bannerMessageSpace" style="height: 10px;"></div> 
                <div id="bannerMessageCont" style="padding-left: 2px;"></div> 
                <!-- 
 
                     Message Box Ends  
 
                    --> 
                <!-- 
 
                     Hottopics links Starts  
 
                    --> 
                <div id="hotTopics" class="" style="display:block;padding-top:14px;width:662px;height:150px;padding-left:2px;"></div> 
                <!-- 
 
                     Hottopics links Ends  
 
                    --> 
                <!-- 
 
                     SearchWidgets Starts  
 
                    --> 
                <div id="SearchWidgets" style="display:block;padding-top:16px;width:100%;height:325px"></div> 
                <!-- 
 
                     SearchWidgets Ends  
 
                    --> 
              </div> 
              <!-- 
 
                 Main Search Ends  
 
                --> 
            </td> 
          </tr> 
        </tbody> 
 
      </table> 
      <!-- 
 
Footer Starts 
 
--> 
 
      <div style="margin-bottom: 35px; padding-top: 20px; padding-left: 30px; width: 98%;"></div> 
 
      <!-- 
 
Footer Ends 
 
--> 
 
      <!-- 
 
 Advance Search Option Starts  
 
--> 
 
      <div id="advanceDiv" style="display:none;background-color: White;border:1px solid #99999…;top:97px;left:184px;width:646px;height:auto;border-top:0px;"></div> 
 
      <!-- 
 
 Advance Search Option Ends  
 
--> 
 
      <!-- 
 
 For Modal Popup Starts  
 
--> 
 
      <div id="divBackground" class="ModalBackground"></div> 
 
      <!-- 
 
 For Modal Popup Ends  
 
--> 
 
      <!-- 
 
 Search By Content Type Starts  
 
--> 
 
      <div id="addnlSrchForm" style="display:none;overflow: hidden;position:absolute;top:34px;lef…width:570px;background-color:white;border:solid 1px #999999;"></div> 
 
      <!-- 
 
 Search By Content Type Ends  
 
--> 
 
      <div id="loading1" class="loading2"></div> 
 
      <div style="position: absolute; width: 210px; z-index: 10; display: none; background-color: White;"></div> 
 
      <script src="js/commonForm.js" type="text/javascript"></script> 
 
      <script src="js/AS.js" type="text/javascript"></script> 
 
      <script src="js/ASadv.js" type="text/javascript"></script> 
 
      <script src="js/suggestSource.js" type="text/javascript"></script> 
 
      <script type="text/javascript"></script> 
 
      <div id="ui-datepicker-div" class="ui-datepicker ui-widget ui-widget-content ui-helper-clearfix ui-corner-all"></div> 
 
    </body> 
 
    </html> 
 
</html> 
 
</iframe> 
<div id="one" class="connectors" style="display:none;"></div> 
 
<script src="js/GAnalytics.js" type="text/javascript"></script> 
 
<script type="text/javascript" src="http://app.ubertags.com/javascripts/ubertags.js"></script> 
 
<div id="ui-datepicker-div" class="ui-datepicker ui-widget ui-widget-content ui-helper-clearfix ui-corner-all ui-helper-hidden-accessible"></div> 
 
<script type="text/javascript"></script> 
 
<!-- 
 
 Google Code for Remarketing Tag - ECOMMERCE Accou… 
 
--> 
 
<!-- 
 
------------------------------------------------ 
R… 
 
--> 
 
<script type="text/javascript"></script> 
 
<script src="//www.googleadservices.com/pagead/conversion.js" type="text/javascript"></script> 
 
<iframe width="300" height="13" frameborder="0" scrolling="no" allowtransparency="true" hspace="0" vspace="0" marginheight="0" marginwidth="0" src="http://googleads.g.doubleclick.net/pagead/viewthroughconvers…&frm=0&url=http%3A//www.lexisnexis.com/hottopics/lnacademic/" 
title="Google conversion frame" name="google_conversion_frame"></iframe> 
 
<noscript></noscript> 
 
<script type="text/javascript"></script> 
 
<!-- 
 
 Google Code for Remarketing Tag - LEAD GEN Accoun… 
 
--> 
 
<!-- 
 
------------------------------------------------ 
R… 
 
--> 
 
<script type="text/javascript"></script> 
 
<script src="//www.googleadservices.com/pagead/conversion.js" type="text/javascript"></script> 
 
<img width="1" border="0" height="1" src="http://googleads.g.doubleclick.net/pagead/viewthroughconvers…&frm=0&url=http%3A//www.lexisnexis.com/hottopics/lnacademic/" alt=""></img> 
 
<noscript></noscript> 
 
<script type="text/javascript"></script> 
 
<!-- 
 
 Google Code for Remarketing Tag  
 
--> 
 
<!-- 
 
------------------------------------------------ 
R… 
 
--> 
 
<script type="text/javascript"></script> 
 
<script src="//www.googleadservices.com/pagead/conversion.js" type="text/javascript"></script> 
 
<script type="text/javascript"></script> 
 
<!-- 
 
 Google Code for Remarketing Tag  
 
--> 
 
<!-- 
 
------------------------------------------------ 
R… 
 
--> 
 
<script type="text/javascript"></script> 
 
<script src="//www.googleadservices.com/pagead/conversion.js" type="text/javascript"></script> 
 
<script type="text/javascript"></script> 
 
<script type="text/javascript" src="//platform.twitter.com/oct.js"></script> 
 
<img width="1" border="0" height="1" src="http://googleads.g.doubleclick.net/pagead/viewthroughconvers…&frm=0&url=http%3A//www.lexisnexis.com/hottopics/lnacademic/" alt=""></img> 
 
<noscript></noscript> 
 
<noscript></noscript> 
 
<script type="text/javascript"></script> 
 
<script type="text/javascript"></script> 
 
<script type="text/javascript"></script> 
 
<noscript></noscript> 
 
<script type="text/javascript"></script> 
 
<noscript></noscript> 
 
<script type="text/javascript"></script> 
 
<script src="http://7205084.collect.igodigital.com/collect.js" type="text/javascript"></script> 
 
<script src="http://www.bizographics.com/collect/?time=1438024251782&pid=…2Fwww.lexisnexis.com%2Fhottopics%2Flnacademic%2F&ref=&fmt=js" type="text/javascript"></script> 
 
<script type="text/javascript"></script> 
 
<div style="display: none;"></div> 
 
<img width="1" border="0" height="1" src="https://imp2.bizographics.com/l" alt="" style="display: none;"></img> 
 
</body> 
 
</html>

请您参考如下方法:

以下是导致 NoSuchElementException 的两个常见原因(以及解决方案):

  • 该元素位于 iframe 中，您需要在搜索之前切换到它:

    driver.switch_to.frame("my_frame_id_or_name") 
elem = driver.find_element_by_id("terms") 
elem.send_keys("Test")

  • 执行搜索时该元素还不存在。 Wait for it :

    from selenium.webdriver.common.by import By 
from selenium.webdriver.support.wait import WebDriverWait 
from selenium.webdriver.support import expected_conditions as EC 
 
wait = WebDriverWait(driver, 10) 
terms = wait.until(EC.presence_of_element_located((By.ID, "terms"))) 
terms.send_keys("test")

或者，甚至应该将两种解决方案结合起来:

wait = WebDriverWait(driver, 10) 
iframe = wait.until(EC.presence_of_element_located((By.ID, "mainFrame"))) 
driver.switch_to.frame(iframe) 
 
terms = wait.until(EC.visibility_of_element_located((By.ID, "terms"))) 
terms.send_keys("test")


  文章来源：
  https://blog.windname.com/post/adiiag2b1.html
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