web.py

1.web.py简介

一个非常轻量级的web开发框架，简单而功能强大

使用Python语言开发web程序

 

2.web.py的安装

 

web.py的官网 www.webpy.org,上面有相应的文档和安装的相关步骤

首先得安装python，目前web.py只支持pythonw2.7x版本，不支持python3.x版本

可以使用python的包管理工具pip来安装web.py，进行命令行，键入命令pip install web.py即可成功安装web.py

 

3. web.py的测试

进行官网 www.webpy.org,将其给出的测试代码保存到本地，假设命令为hello.py

1. import web
   urls =(
       '/(.*)','hello'
       )
   app = web.application(urls, globals())
   class hello:
       def GET(self, name):
       if not name:
           name ='World'
       return'Hello, '+ name +'!'
   if __name__ =="__main__":
       app.run()

运行这段代码

python hello.py

 

4. web的开发基础

WEB开发需要掌握 HTML  CSS JS的基础知识 

下面开始写第一个demo程序

import web
urls =(
    '/(.*)','hello'
)
app = web.application(urls, globals())
class hello:
    def GET(self, name):
    file = open('Welcome to web.py! (web.py).html','r')
    return file.read()
if __name__ =="__main__":
    app.run()

 效果如下图

 

5. URL映射

url完全匹配 /index

url模糊匹配 /post/\d+

url带组匹配 /post/(\d+)

import web
urls =(
    '/index','index',
    '/blog/\d+','blog',
    '/(.*)','hello'
    )
app = web.application(urls, globals())
class index:
    def GET(self):
        return"index"
class blog:
    def GET(self):
        return'blog'
class hello:
    def GET(self, name ):
        if name =="":
            name ='world'
        return'hello,'+name
if __name__ =="__main__":
    app.run()                        

效果

6.请求的处理

请求参数的获取 web.input()

请求头获取 web.ctx.env

import web
urls =(
    '/index','index',
    '/blog/\d+','blog',
    '/(.*)','hello'
    )
app = web.application(urls, globals())
class index:
    def GET(self):
        query = web.input()
            return query
class blog:
    def POST(self):
       return web.input()
    def GET(self):
        return web.ctx.env
class hello:
    def GET(self, name ):
        return open('1.html','r').read()
if __name__ =="__main__":
    app.run()            

效果

7.响应处理

 

import web
import MySQLdb
import MySQLdb.cursors

render = web.template.render("templates")

        
urls = (
    '/article','article',
    '/index','index',
    '/blog/\d+','blog',
    '/(.*)','hello'
)
app = web.application(urls, globals())

class index:
    def GET(self):
        return web.seeother("http://www.baidu.com")
class blog:
    def POST(self):
        return web.input()
    def GET(self):
        return web.ctx.env
class hello:        
    def GET(self, name ):
        return render.hello2(name)
class article: 
    def GET(self):
        conn = MySQLdb.Connect(host="localhost",port=3306,user='root',passwd='123456',db='test')
        cur=conn.cursor()
        cur.execute('select * from articles')
        r = cur.fetchall()
        print cur.rowcount

        cur.close()
        conn.close()
        return render.article(r)

if __name__ == "__main__":
    app.run()

 

更多资料可参考http://webpy.org/

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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