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()
希望本文所述对大家的Python程序设计有所帮助。

Python is suitable for data science, web development and automation tasks, while C is suitable for system programming, game development and embedded systems. Python is known for its simplicity and powerful ecosystem, while C is known for its high performance and underlying control capabilities.

You can learn basic programming concepts and skills of Python within 2 hours. 1. Learn variables and data types, 2. Master control flow (conditional statements and loops), 3. Understand the definition and use of functions, 4. Quickly get started with Python programming through simple examples and code snippets.

Python is widely used in the fields of web development, data science, machine learning, automation and scripting. 1) In web development, Django and Flask frameworks simplify the development process. 2) In the fields of data science and machine learning, NumPy, Pandas, Scikit-learn and TensorFlow libraries provide strong support. 3) In terms of automation and scripting, Python is suitable for tasks such as automated testing and system management.

You can learn the basics of Python within two hours. 1. Learn variables and data types, 2. Master control structures such as if statements and loops, 3. Understand the definition and use of functions. These will help you start writing simple Python programs.

How to teach computer novice programming basics within 10 hours? If you only have 10 hours to teach computer novice some programming knowledge, what would you choose to teach...

How to avoid being detected when using FiddlerEverywhere for man-in-the-middle readings When you use FiddlerEverywhere...

Error loading Pickle file in Python 3.6 environment: ModuleNotFoundError:Nomodulenamed...

How to solve the problem of Jieba word segmentation in scenic spot comment analysis? When we are conducting scenic spot comments and analysis, we often use the jieba word segmentation tool to process the text...


Hot AI Tools

Undresser.AI Undress
AI-powered app for creating realistic nude photos

AI Clothes Remover
Online AI tool for removing clothes from photos.

Undress AI Tool
Undress images for free

Clothoff.io
AI clothes remover

AI Hentai Generator
Generate AI Hentai for free.

Hot Article

Hot Tools

SublimeText3 Mac version
God-level code editing software (SublimeText3)

DVWA
Damn Vulnerable Web App (DVWA) is a PHP/MySQL web application that is very vulnerable. Its main goals are to be an aid for security professionals to test their skills and tools in a legal environment, to help web developers better understand the process of securing web applications, and to help teachers/students teach/learn in a classroom environment Web application security. The goal of DVWA is to practice some of the most common web vulnerabilities through a simple and straightforward interface, with varying degrees of difficulty. Please note that this software

SublimeText3 Chinese version
Chinese version, very easy to use

mPDF
mPDF is a PHP library that can generate PDF files from UTF-8 encoded HTML. The original author, Ian Back, wrote mPDF to output PDF files "on the fly" from his website and handle different languages. It is slower than original scripts like HTML2FPDF and produces larger files when using Unicode fonts, but supports CSS styles etc. and has a lot of enhancements. Supports almost all languages, including RTL (Arabic and Hebrew) and CJK (Chinese, Japanese and Korean). Supports nested block-level elements (such as P, DIV),

EditPlus Chinese cracked version
Small size, syntax highlighting, does not support code prompt function