使用XPath获取HTML元素的文本内容?
看到这个html了吗使用XPath获取HTML元素的文本内容?,html,xml,xpath,html-parsing,Html,Xml,Xpath,Html Parsing,看到这个html了吗 <div> <p> <span class="abc">Monitor</span> <b>$300</b> </p> <a href="/add">Add to cart</a> </div> <div> <p> <span class="abc">Keyboard<
<div>
<p>
<span class="abc">Monitor</span> <b>$300</b>
</p>
<a href="/add">Add to cart</a>
</div>
<div>
<p>
<span class="abc">Keyboard</span> $20
</p>
<a href="/add">Add to cart</a>
</div>
但它选择了Monitor$300
。我不要标签。如何仅获取文本?要选择所有子代文本,而不仅仅是子文本:
//div[a[contains(., "Add to cart")]]/p//text()
注意p
和text()
之间的双斜杠
这可能还包括许多标记间的空白,不过,您需要清理这些空白。使用lxml
的示例:
>>> import lxml.etree as ET
>>> tree = ET.fromstring('''<div>
... <div>
... <p>
... <span class="abc">Monitor</span> <b>$300</b>
... </p>
... <a href="/add">Add to cart</a>
... </div>
... <div>
... <p>
... <span class="abc">Keyboard</span> $20
... </p>
... <a href="/add">Add to cart</a>
... </div>
... </div>''')
>>> tree.xpath('//div[a[contains(., "Add to cart")]]/p//text()')
['\n ', 'Monitor', ' ', '$300', '\n ', '\n ', 'Keyboard', ' $20 \n ']
>>> res = _
>>> [txt for txt in (txt.strip() for txt in res) if txt]
['Monitor', '$300', 'Keyboard', '$20']
>>将lxml.etree作为ET导入
>>>tree=ET.fromstring(“”)
...
…
…监视器300美元
...
...
...
…
…键盘20美元
...
...
... ''')
>>>xpath('//div[a[包含(,“添加到购物车”)]]/p//text()
['\n'、''Monitor'、''$300'、'\n'、'\n'、'键盘'、'$20\n']
>>>res=_
>>>[txt代表txt(txt.strip()代表res中的txt)如果是txt]
[‘显示器’、‘300美元’、‘键盘’、‘20美元’]
text()
不应选择元素。您使用的是什么XML解析器?@chorobascrapy.selector.lxmlsel.HtmlXPathSelector
如何访问该值?在DOM Level 3 word中,您可以选择p
元素,例如//div[a[contains(,“Add to cart”)]/p
,然后访问textContent
属性以获取纯文本内容。@MartinHonnen我正在使用XPathSelector
Wow!那双/
节省了我的时间很高兴为你工作。:-)我只是想让你明白空白是从哪里来的,以及如何清理它。
>>> import lxml.etree as ET
>>> tree = ET.fromstring('''<div>
... <div>
... <p>
... <span class="abc">Monitor</span> <b>$300</b>
... </p>
... <a href="/add">Add to cart</a>
... </div>
... <div>
... <p>
... <span class="abc">Keyboard</span> $20
... </p>
... <a href="/add">Add to cart</a>
... </div>
... </div>''')
>>> tree.xpath('//div[a[contains(., "Add to cart")]]/p//text()')
['\n ', 'Monitor', ' ', '$300', '\n ', '\n ', 'Keyboard', ' $20 \n ']
>>> res = _
>>> [txt for txt in (txt.strip() for txt in res) if txt]
['Monitor', '$300', 'Keyboard', '$20']