用Python将绝对URL替换成相对URL

Sat 29 September 2012

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,

脚本内容如下:

#!/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()

Category: Python Tagged: 绝对 相对 替换 url python

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