python - 从 html 文本中提取标签信息

Question

我正在尝试抓取网页。我得到了以下文字。如何从下面的字符串中提取 src 信息。谁能告诉我这个过程我们如何从文本中提取任何键值数据

<img id="imgsglx2" onerror="this.alt=not select the picture or pictures cannot be displayed" src="http://114.255.167.200:8092/cidasEN/extend/sglx_images/UTYP/221.jpg" style=" border: 0; padding: 0; margin: 0;height:110px;width:110px; "/>

和 textarea 标签内的文本。

  <textarea id="sgmsbck" name="sgms" style="width:98%;height:120px">On August. 19, 2014\uff0c08:30, Mr. Xiao who drove lu K9**** MPV from south to north along the TaiShang south Road, when Mr. Xiao drove lu K9**** MPV turn west at the crossing of Chengshan road and TaiShang south road, RongCheng City. Due to wrong behavior towards pedestrians at pedestrian crossings, the left part of the lu K9**** MPV impacted with Mr. Song(Pedestrian) from south to north across ChengShan Road of the pedestrian crossings. Causing the lu K9**** MPV damaged, Mr. Song injured.</textarea>

Answer 1

既然你提到了beautifulsoup在标签中，我假设您想用它来解析您的 html 内容。

import bs4

content = """<img id="imgsglx2" onerror="this.alt=not select the picture or pictures cannot be displayed" src="http://114.255.167.200:8092/cidasEN/extend/sglx_images/UTYP/221.jpg" style=" border: 0; padding: 0; margin: 0;height:110px;width:110px; "/>
<textarea id="sgmsbck" name="sgms" style="width:98%;height:120px">On August. 19, 2014\uff0c08:30, Mr. Xiao who drove lu K9**** MPV from south to north along the TaiShang south Road, when Mr. Xiao drove lu K9**** MPV turn west at the crossing of Chengshan road and TaiShang south road, RongCheng City. Due to wrong behavior towards pedestrians at pedestrian crossings, the left part of the lu K9**** MPV impacted with Mr. Song(Pedestrian) from south to north across ChengShan Road of the pedestrian crossings. Causing the lu K9**** MPV damaged, Mr. Song injured.</textarea>
"""

soup = bs4.BeautifulSoup(content, 'lxml')

img = soup.find('img') # locate img tag
text_area = soup.find('textarea') # locate textarea tag

print img['id'] # print value of 'id' attribute in img tag
print img['src'] # print value of 'src' attribute
print text_area.text # print content in this tag