模板
修改index.py
#!/usr/bin/env Python
# coding=utf-8
import tornado.web
import methods.readdb as mrd
class IndexHandler(tornado.web.RequestHandler):
def get(self):
usernames = mrd.select_columns(table="users",column="username")
one_user = usernames[0][0]
self.render("index.html", user=one_user)
def post(self):
username = self.get_argument("username")
password = self.get_argument("password")
user_infos = mrd.select_table(table="users",column="*",condition="username",value=username)
if user_infos:
db_pwd = user_infos[0][2]
if db_pwd == password:
self.write("welcome you: " + username)
else:
self.write("your password was not right.")
else:
self.write("There is no thi user.")
readdb.py 添加select_columns 方法
def select_columns(table, column ):
sql = "select " + column + " from " + table
cur.execute(sql)
lines = cur.fetchall()
return lines
修改index.html文件
<!DOCTYPE html>
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1" />
<title>Learning Python</title>
</head>
<body>
<h2> 登录页面</h2>
<p>用用户名为：{{user}}登录</p>
<form method="POST">
<p><span>UserName:</span><input type="text" id="username"/></p>
<p><span>Password:</span><input type="password" id="password" /></p>
<p><input type="BUTTON" value="登录" id="login" /></p>
</form>
<script src="{{static_url(‘js/jquery-3.2.1.min.js‘)}}"></script>
<script src="{{static_url(‘js/script.js‘)}}"></script>
</body>
要求用户正确登录之后，跳转到另外一个页面，并且在那个页面中显示出用户的完整信息。
先修改 url.py 文件，在其中增加一些内容
#!/usr/bin/env Python
# coding=utf-8
"""
the url structure of website
"""
#!/usr/bin/env Python
# coding=utf-8
"""
the url structure of website
"""
from handlers.index import IndexHandler
from handlers.user import UserHandler
url = [
(r‘/‘, IndexHandler),
(r‘/user‘, UserHandler),
]
然后就建立 handlers/user.py 文件
#!/usr/bin/env Python
# coding=utf-8
import tornado.web
import methods.readdb as mrd
class UserHandler(tornado.web.RequestHandler):
def get(self):
username = self.get_argument("user")
user_infos = mrd.select_table(table="users",column="*",condition="username",value=username)
self.render("user.html", users = user_infos)
时间： 2024-11-05 09:23:26