python中django框架通过正则搜索页面上email地址的方法

本文实例讲述了python中django框架通过正则搜索页面上email地址的方法。分享给大家供大家参考。具体实现方法如下：

    import re
    from django.shortcuts import render
    from pattern.web import URL, DOM, abs, find_urls
    def index(request):
     """
     find email addresses in requested url or contact page
     """
     error = ''
     emails = set()
     url_string = request.GET.get('url', '')
     EMAIL_REGEX = re.compile(r'[A-Z0-9._%+-]+@[A-Z0-9.-]+\.[A-Z]{2,6}', re.IGNORECASE)
     # use absolute url or domain name
     url = URL(url_string) if url_string.startswith('http') else URL(domain=url_string,protocol='http')
     if url_string:
     try:
      dom = DOM(url.download(cached=True))
     except Exception, e:
      error = e
     else:
      contact_urls = { url.string }
      # search links of contact page
      for link in dom('a'):
      if re.search(r'contact|about', link.source, re.IGNORECASE):
       contact_urls.add(
       abs(link.attributes.get('href',''), base=url.redirect or url.string))
      for contact_url in contact_urls:
      # download contact page
      dom = DOM(URL(contact_url).download(cached=True))
      # search emails in the body of the page
      for line in dom('body')[0].content.split('\n'):
       found = EMAIL_REGEX.search(line)
       if found:
       emails.add(found.group())
     data = {
     'url': url_string,
     'emails': emails,
     'error': error,
     }
     return render(request, 'index.html', data)

PS：这里再为大家提供2款非常方便的正则表达式工具供大家参考使用：

JavaScript正则表达式在线测试工具：
http://tools.jb51.net/regex/javascript

正则表达式在线生成工具：
http://tools.jb51.net/regex/create_reg

希望本文所述对大家的Python程序设计有所帮助。