web.py+sqlite写的简单留言本

    技术2022-05-13  36

    #!/usr/bin/env python #coding=utf-8 import os,web,time import sqlite3 as db urls = (         '/', 'hello',         '/add','add'         ) class hello:     def GET(self):         #实例化sqldb,然后获取内容         s = ""         sdb = sqldb()         rec = sdb.cu.execute("""select * from msgs""")         dbre = sdb.cu.fetchall()               for i in dbre:             s =  "<p>"+i[2]+"  <span style=/"color: blue/">"+i[1]+' sad: '+r"</span>"+"  <span style=/"color: gray/">"+i[3]+r"</span></p>" + s                sh = """         <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"><HTML>         <HEAD><meta http-equiv="X-UA-Compatible" content="IE=8" />         <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />         <TITLE> OK!</TITLE> </HEAD> <BODY><h1>Hello World!</h1>         """         sb = """         <h2>add a note</h2>         <form method="post" action="/add">         UserName:<INPUT TYPE="text" NAME="uname"><br />         <textarea name="content" ROWS="20" COLS="60"></textarea><br />         <button type="submit">save</button></form></BODY></HTML>         """         s = sh + s + sb         return s class add:     def POST(self):         i = web.input('content')         n = web.input('uname')         date = time.strftime("%Y-%m-%d %H:%M:%S",time.localtime())         sdb = sqldb()         rec = sdb.cu.execute("""select * from msgs""")         dbre = sdb.cu.fetchall()         for k in dbre:             j = k[0]+1         t = (j,n.uname,date,i.content)         sdb.cu.execute('insert into msgs values(?,?,?,?)',t)         sdb.conn.commit()         return web.seeother('/')     def GET(self):         return web.seeother('/') class sqldb:     #先验证数据库是否存在     def __init__(self):         if os.path.exists("msg.db"):             #如果数据库存在,就直接连接             self.conn = db.connect("msg.db")             self.cu = self.conn.cursor()         else:             #如果数据库不存在,连接,并生成表             self.conn = db.connect("msg.db")             self.cu = self.conn.cursor()             self.cu.execute("""create table msgs(                      id integer primary key,                      name text,                      date text,                      content text) """)             self.cu.execute("""insert into msgs values(1,'Ahai','2010-05-19 15:11:20','Ahi alaws be ok!')""")             self.conn.commit() if __name__=="__main__":     app = web.application(urls,globals())     app.run()

     

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