<p>最后一篇文章的结果如下所示。它不包含您期望的表,但它不是一个完整的HTML文档。我怀疑这通常是使用AJAX加载的,因此只更新DOM的一部分,然后在处理之后执行更多JavaScript来加载您所查找的表。我建议您使用<code>selenium</code>之类的工具来驱动浏览器。例如,使用Chrome:</p>
<pre><code>from selenium import webdriver
from selenium.webdriver.support.select import Select
from bs4 import BeautifulSoup
from selenium.common.exceptions import StaleElementReferenceException
import time
class WaitUntilElementIsStale:
def __init__(self, *, driver=None, element=None, timeout=10):
assert driver or element
self.element = driver.find_element_by_tag_name('html') if element is None else element
self.timeout = timeout
def __enter__(self):
return None
def __exit__(self, exc_type, exc_value, exc_traceback):
if exc_type is not None:
return
start_time = time.time()
while time.time() < start_time + self.timeout:
try:
# poll the link with an arbitrary call
self.element.find_elements_by_id("doesn't-matter")
except StaleElementReferenceException:
return
time.sleep(0.1)
options = webdriver.ChromeOptions()
options.add_argument("headless") # comment out to see the browser
options.add_experimental_option('excludeSwitches', ['enable-logging'])
driver = webdriver.Chrome(options=options)
try:
driver.implicitly_wait(10) # 10 seconds is a bit of "overkill" but it doesn't hurt
driver.get('https://www.lgindiasocial.com/microsites/brand-store-web-five/locate.aspx')
with WaitUntilElementIsStale(element=driver.find_element_by_name("ddlCity")):
Select(driver.find_element_by_name("ddlState")).select_by_value('Assam')
with WaitUntilElementIsStale(element=driver.find_element_by_name("ddllocation")):
Select(driver.find_element_by_name("ddlCity")).select_by_value('Golaghat')
Select(driver.find_element_by_name("ddllocation")).select_by_value('Golaghat')
driver.find_element_by_name('btnsubmit').click()
driver.find_element_by_tag_name('table') # implicitly wait for up to 10 seconds for this element to appear
soup = BeautifulSoup(driver.page_source, "lxml")
item = soup.select_one("table")
print(item)
finally:
driver.quit()
</code></pre>
<p>印刷品:</p>
<pre><code><table border="0" cellspacing="0" id="dladdress" rules="all" style="background-color:White;border-width:0px;width:500px;border-collapse:collapse;border:0px solid red;">
<tbody><tr>
<td style="border-width:0px;">
<div style="padding:5px;text-align: left;width: 85%;">
<div style="padding-top:10px; padding-bottom:5px; color:#d80546; ">LG BRAND STORE - BRAHMAPUTRA ELECTRONICS</div>
<span id="dladdress_ctl02_divaddress" style="font-weight:bold; padding-bottom:10px;">Complete Address : </span>
<span style="text-transform:capitalize">g.f. road, near das &amp; co., golaghat, assam</span><br/>
<span id="dladdress_ctl02_divcontact" style="font-weight:bold; padding-bottom:10px;">Contact Person :</span>
<span style="text-transform:capitalize;">pravin kankani<br/>
<span id="dladdress_ctl02_divphone" style="font-weight:bold; padding-bottom:10px;">Contact No. :</span> <span id="dladdress_ctl02_lblcontact">9954305770 , </span><br/>
<span id="dladdress_ctl02_divemail" style="font-weight:bold; padding-bottom:10px;"> Email ID:</span> brahmaputralgshoppe@yahoo.com<br/></span>
</div>
</td>
</tr>
</tbody></table>
</code></pre>
<p><strong>更新</strong>:</p>
<p>我看到你已经更新了你的问题。我假设您已经进行了网络跟踪,以查看后续的AJAX POST请求用于获得最终结果的内容。您非常依赖于网站应用程序的内部结构,不会发生变化,但我认为只要它们保持不变,您的代码就可以工作</p>
<p>我已经更新了我的解决方案,在尝试在下一个下拉列表中进行选择之前,不必每次在下拉列表中进行选择时任意等待1秒。例如,在“状态”下拉列表中进行选择后,将重新创建当前“城市”下拉列表(并且原始下拉列表将变为“过时”)。新代码只是重复地等待当前城市下拉列表变得过时,然后再寻找新的。因此,应该少浪费时间</p>
<p>第二个变化是简单地将完整的HTML加载到BeautifulSoup中</p>
<p>当然,这段代码取决于用户界面是否不变。但是,当用户界面确实发生变化时,这一点非常明显,并且该代码很容易适应这种变化</p>
<p><strong>原始发帖请求的结果:</strong></p>
<pre><code>3256|updatePanel|UpdatePanel1|
<div class="container-fluid">
<div class="row">
<div class="col-md-12 text-center">Locate nearest LG Brand Store</div>
<div class="col-md-12 text-center">
<div class="row">
<div class="col-md-3"><select name="ddlState" onchange="javascript:setTimeout('__doPostBack(\'ddlState\',\'\')', 0)" id="ddlState" class="select">
<option selected="selected" value="Select State">Select State</option>
<option value="Andhra Pradesh">Andhra Pradesh</option>
<option value="Arunachal Pradesh">Arunachal Pradesh</option>
<option value="Assam">Assam</option>
<option value="Bangalore">Bangalore</option>
<option value="Bihar">Bihar</option>
<option value="Chandigarh">Chandigarh</option>
<option value="Chhattisgarh">Chhattisgarh</option>
<option value="Delhi">Delhi</option>
<option value="Goa">Goa</option>
<option value="Gujarat">Gujarat</option>
<option value="Haryana">Haryana</option>
<option value="Himachal Pradesh">Himachal Pradesh</option>
<option value="Jammu and Kashmir">Jammu and Kashmir</option>
<option value="Jharkhand">Jharkhand</option>
<option value="Karnataka">Karnataka</option>
<option value="Kerala">Kerala</option>
<option value="Madhya Pradesh">Madhya Pradesh</option>
<option value="Maharashtra">Maharashtra</option>
<option value="Manipur">Manipur</option>
<option value="Mizoram">Mizoram</option>
<option value="Nagaland">Nagaland</option>
<option value="Orissa">Orissa</option>
<option value="Punjab">Punjab</option>
<option value="Rajasthan">Rajasthan</option>
<option value="Tamilnadu">Tamilnadu</option>
<option value="Telangana">Telangana</option>
<option value="Tripura">Tripura</option>
<option value="Uttar Pradesh">Uttar Pradesh</option>
<option value="Uttarakhand">Uttarakhand</option>
<option value="West Bengal">West Bengal</option>
</select></div>
<div class="col-md-3"><select name="ddlCity" onchange="javascript:setTimeout('__doPostBack(\'ddlCity\',\'\')', 0)" id="ddlCity" class="select">
<option selected="selected" value="Select City">Select City</option>
</select></div>
<div class="col-md-3"><select name="ddllocation" id="ddllocation" class="select">
<option selected="selected" value="Select Location">Select Location</option>
</select></div>
<div class="col-md-3"><input type="submit" name="btnsubmit" value="Submit" onclick="return validate();_gaq.push(['_trackEvent', 'LOCATE US', 'Click', 'SUBMIT']);" id="btnsubmit" class="submit" /></div>
</div>
</div>
<div class="col-md-12 text-center mt-5">
<div class="col-md-12 text-center">
<div class="row">
<div class="col-md-6">
<div id="map" style="display:none;height: 360px; width:100%;margin-left:10px;border:1px solid #cccccc;"></div>
</div>
<div class="col-md-6"><! MAP START >
<div id="divgrid" style="display:block;background-color:White;width:100%;height:360px;border:1px solid #cccccc;overflow-x:hidden;overflow-y:auto;">
<div>
</div>
</div>
</div>
</div>
<! MAP END >
</div>
</div>
</div>
</div>
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</code></pre>