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如何利用Python脚本生成sitemap.xml

来源:本站整理 作者:佚名 时间:2017-04-16 TAG: 我要投稿

安装lxml
首先需要pip install lxml安装lxml库。
如果你在ubuntu上遇到了以下错误:
#include "libxml/xmlversion.h"
compilation terminated.
error: command 'x86_64-linux-gnu-gcc' failed with exit status 1
----------------------------------------
Cleaning up...
 Removing temporary dir /tmp/pip_build_root...
Command /usr/bin/python -c "import setuptools, tokenize;__file__='/tmp/pip_build_root/lxml/setup.py';exec(compile(getattr(tokenize, 'open', open)(__file__).read().replace('\r\n', '\n'), __file__, 'exec'))" install --record /tmp/pip-O4cIn6-record/install-record.txt --single-version-externally-managed --compile failed with error code 1 in /tmp/pip_build_root/lxml
Exception information:
Traceback (most recent call last):
 File "/usr/lib/python2.7/dist-packages/pip/basecommand.py", line 122, in main
 status = self.run(options, args)
 File "/usr/lib/python2.7/dist-packages/pip/commands/install.py", line 283, in run
 requirement_set.install(install_options, global_options, root=options.root_path)
 File "/usr/lib/python2.7/dist-packages/pip/req.py", line 1435, in install
 requirement.install(install_options, global_options, *args, **kwargs)
 File "/usr/lib/python2.7/dist-packages/pip/req.py", line 706, in install
 cwd=self.source_dir, filter_stdout=self._filter_install, show_stdout=False)
 File "/usr/lib/python2.7/dist-packages/pip/util.py", line 697, in call_subprocess
 % (command_desc, proc.returncode, cwd))
InstallationError: Command /usr/bin/python -c "import setuptools, tokenize;__file__='/tmp/pip_build_root/lxml/setup.py';exec(compile(getattr(tokenize, 'open', open)(__file__).read().replace('\r\n', '\n'), __file__, 'exec'))" install --record /tmp/pip-O4cIn6-record/install-record.txt --single-version-externally-managed --compile failed with error code 1 in /tmp/pip_build_root/lxml
请安装以下依赖:
sudo apt-get install libxml2-dev libxslt1-dev
Python代码
下面是生成sitemap和sitemapindex索引的代码,可以按照需求传入需要的参数,或者增加字段:
#!/usr/bin/env python
# -*- coding:utf-8 -*-
import io
import re
from lxml import etree
def generate_xml(filename, url_list):
 """Generate a new xml file use url_list"""
 root = etree.Element('urlset',
       xmlns="http://www.sitemaps.org/schemas/sitemap/0.9")
 for each in url_list:
  url = etree.Element('url')
  loc = etree.Element('loc')
  loc.text = each
  url.append(loc)
  root.append(url)
 header = u'\n'
 s = etree.tostring(root, encoding='utf-8', pretty_print=True)
 with io.open(filename, 'w', encoding='utf-8') as f:
  f.write(unicode(header+s))
def update_xml(filename, url_list):
 """Add new url_list to origin xml file."""
 f = open(filename, 'r')
 lines = [i.strip() for i in f.readlines()]
 f.close()
 old_url_list = []
 for each_line in lines:
  d = re.findall('(http:\/\/.+)', each_line)
  old_url_list += d
 url_list += old_url_list
 generate_xml(filename, url_list)
def generatr_xml_index(filename, sitemap_list, lastmod_list):
 """Generate sitemap index xml file."""
 root = etree.Element('sitemapindex',
       xmlns="http://www.sitemaps.org/schemas/sitemap/0.9")
 for each_sitemap, each_lastmod in zip(sitemap_list, lastmod_list):
  sitemap = etree.Element('sitemap')
  loc = etree.Element('loc')
  loc.text = each_sitemap
  lastmod = etree.Element('lastmod')
  lastmod.text = each_lastmod
  sitemap.append(loc)
  sitemap.append(lastmod)
  root.append(sitemap)
 header = u'\n'
 s = etree.tostring(root, encoding='utf-8', pretty_print=True)
 with io.open(filename, 'w', encoding='utf-8') as f:
  f.write(unicode(header+s))
if __name__ == '__main__':
 urls = ['http://www.baidu.com'] * 10
 mods = ['2004-10-01T18:23:17+00:00'] * 10
 generatr_xml_index('index.xml', urls, mods)
效果
生成的效果应该是这种格式:
sitemap格式:
xml version="1.0" encoding="UTF-8"?>
 xmlns="http://www.sitemaps.org/schemas/sitemap/0.9">
 
 http://www.example.com/foo.html
 
sitemapindex格式:
xml version="1.0" encoding="UTF-8"?>
  xmlns="http://www.sitemaps.org/schemas/sitemap/0.9">
 
  http://www.example.com/sitemap1.xml.gz
  2004-10-01T18:23:17+00:00

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