Home Backend Development Python Tutorial Python实现将绝对URL替换成相对URL的方法

Python实现将绝对URL替换成相对URL的方法

Jun 06, 2016 am 11:19 AM
python replace relative url

本文实例讲述了Python实现将绝对URL替换成相对URL的方法。分享给大家供大家参考。具体分析如下:

一、问题:

公司一个项目需要上传图片,一开始同事将图片上传后结合当前主机拼成了一个绝对的URL(http://192.168.1.1:888/m/getimg?filename=xxx.jpg)由于同时给手机终端提供接口,在手机终端会引起一些bug,改完代码后要求将以前的uri替换成相对的URL(/m/getimg?filename=xxx.jpg),由于图片是用img标签嵌入到内容同时用a标签括起显示大图的,所以需要读取数据库并对内容进行替换

二、解决方法:

#!/usr/bin/env python
#-*- coding:utf-8 -*-
#
#
# author : cold night
# email  : wh_linux@126.com
#
import pymongo
import re
from StringIO import StringIO
conn = pymongo.Connection()
db = conn.test
def replace_url():
  regex = re.compile(r'([href¦src])=["¦\']http://.*?(/m/getimg\?.*?)["¦\']')
  results = db['test'].find()
  db_coll = db['test']
  def replace(r):
    content = r.get('content')
    if not content: return
    content = StringIO(content)
    content.seek(0)
    result = StringIO()
    for line in content.readlines():
      t = regex.sub(r'\1="\2"', line)
      result.write(t)
    result.seek(0)
    content = result.read()
    if content:
      r['content'] = content
    _id = r.get('_id')
    db_coll.update({'_id':_id}, r)
  results = [replace(i) for i in results]
if __name__=="__main__":replace_url()

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希望本文所述对大家的Python程序设计有所帮助。

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