通过flask实现web页面简单的增删改查bootstrap美化版
项目目录结构
[root@node1 python]# tree -L 2
.
├── animate.css
├── fileutils.py
├── fileutils.pyc
├── flask_web01.py
├── static
│ ├── bootstrap-3.3.5
│ ├── bootstrap.min.css
│ ├── jquery-3.3.1.min.js
│ └── signin.css
├── templates
│ ├── add.html
│ ├── jquery.html
│ ├── list.html
│ ├── login.html
│ └── update.html
└── user.txt
3 directories, 13 files
[root@node1 python]# ls
animate.css fileutils.py fileutils.pyc flask_web01.py static templates user.txt
# 1.后台程序falsk_web01.py
启动web程序
#coding:utf-8
from flask import Flask,render_template,request,redirect
import fileutils
# 引入file_dict用户列表
fileutils.file_read()
app = Flask(__name__)
@app.route(‘/‘)
def index():
return render_template(‘login.html‘)
@app.route(‘/loginaction/‘, methods = ["POST","GET"])
def login():
error_msg = ‘‘
if request.method == ‘GET‘:
username = request.args.get(‘username‘)
password = request.args.get(‘password‘)
else:
username = request.form.get(‘username‘)
password = request.form.get(‘password‘)
print(‘username:%s,password:%s‘ % (username,password))
if username and password:
if username == "admin" and password == "admin":
return redirect(‘/list‘)
else:
error_msg = "username or password is wrong"
else:
error_msg = ‘need username and password‘
return render_template(‘login.html‘, error_msg = error_msg)
@app.route(‘/list/‘)
def userlist():
userlist = fileutils.file_read().items()
print(‘userlist:%s‘ % userlist)
return render_template(‘list.html‘, userlist = userlist)
@app.route(‘/update/‘)
def update():
username = request.args.get(‘username‘)
password = fileutils.file_read().get(username)
user = [username, password]
print(‘update:%s‘ % user)
return render_template(‘update.html‘, user = user)
@app.route(‘/updateaction/‘, methods = [‘POST‘])
def updateaction():
params = request.args if request.method == ‘GET‘ else request.form
username = params.get(‘username‘)
password = params.get(‘password‘)
fileutils.file_dict[username] = password
fileutils.file_write()
return redirect(‘/list/‘)
@app.route(‘/add/‘)
def add():
return render_template(‘add.html‘)
@app.route(‘/addaction/‘, methods = [‘POST‘])
def addaction():
params = request.args if request.method == ‘GET‘ else request.form
username = params.get(‘username‘)
password = params.get(‘password‘)
if username in fileutils.file_dict:
return redirect(‘/list/‘)
else:
fileutils.file_dict[username] = password
fileutils.file_write()
return redirect(‘/list/‘)
@app.route(‘/delete/‘)
def delete():
username = request.args.get(‘username‘)
fileutils.file_dict.pop(username)
fileutils.file_write()
return redirect(‘/list/‘)
if __name__ == "__main__":
app.run(host = ‘0.0.0.0‘, debug = True)
# 2.工具类fileutils.py
# coding:utf-8
file_dict = {}
# file => dict
def file_read():
with open(‘user.txt‘) as f:
for line in f.read().split(‘\n‘):
if line:
tmp = line.split(‘:‘)
file_dict[tmp[0]] = tmp[1]
return file_dict
# ditc => file
def file_write():
file_arr = []
for user,pwd in file_dict.items():
file_arr.append(‘%s:%s‘ % (user, pwd))
print(file_arr)
with open(‘user.txt‘, ‘w‘) as f:
f.write(‘\n‘.join(file_arr))
if __name__ == "__main__":
print(file_read())
file_write()
# 3.模板文件templates中的登陆、列表、增删改查页面
①用户登录页面login.html
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>login</title>
<link href="https://cdn.bootcss.com/bootstrap/3.3.7/css/bootstrap.min.css" rel="stylesheet">
<link rel="stylesheet" type="text/css" href="/static/signin.css">
</head>
<body>
<p style="color:red">
{{error_msg}}
</p>
<div class="container">
<form class="form-signin" action="/loginaction/" method="post">
<h2 class="form-signin-heading">Please sign in</h2>
<label for="inputEmail" class="sr-only">admin_username</label>
<input type="text" id="username" name="username" class="form-control" placeholder="admin_username" required autofocus>
<label for="inputPassword" class="sr-only">Password</label>
<input type="password" name="password" id="inputPassword" class="form-control" placeholder="Password" required>
<div class="checkbox">
</div>
<button class="btn btn-lg btn-primary btn-block" type="submit">登陆</button>
</form>
</div>
</body>
</html>
②更新用户页面update.html
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>login</title>
<link rel="stylesheet" type="text/css" href="https://cdn.bootcss.com/bootstrap/3.3.7/css/bootstrap.min.css">
</head>
<body>
<div class="container">
<div class="row">
<form class="form-inline" action=‘/updateaction/‘ method="post">
<div class="form-group">
<label class="sr-only">username:</label>
<p class="form-control-static">{{user[0]}}</p>
<input type="hidden" name="username" value="{{user[0]}}" />
</div>
<div class="form-group">
<label for="inputPassword2" class="sr-only">Password: </label>
<input type="text" name="password" value="{{user[1]}}" class="form-control" id="inputPassword2" placeholder="Password">
</div>
<button type="submit" class="btn btn-success">update</button>
</form>
</div>
</div>
</body>
</html>
③添加用户页面add.html
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>login</title>
<link rel="stylesheet" type="text/css" href="https://cdn.bootcss.com/bootstrap/3.3.7/css/bootstrap.min.css">
</head>
<body>
<div class="container">
<div class="row">
<div class="col-md-12">
<form class="form-inline" action="/addaction/" method="post">
<div class="form-group">
<label for="exampleInputName2">username: </label>
<input type="text" name="username" class="form-control" id="exampleInputName2" placeholder="username">
</div>
<div class="form-group">
<label for="exampleInputEmail2">password: </label>
<input type="password" name="password" class="form-control" id="exampleInputEmail2" placeholder="password">
</div>
<button type="submit" class="btn btn-default">添加用户</button>
</form>
</div>
</div>
</div>
</body>
</html>
④列表页面list.html
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>login</title>
<link rel="stylesheet" type="text/css" href="https://cdn.bootcss.com/bootstrap/3.3.7/css/bootstrap.min.css">
</head>
<body>
<!-- 引入流式布局 -->
<div class="container-fluid">
<div class="row">
<!-- 引入栅格系统占用10列(默认共12等分) -->
<div class="col-md-10">
<table class="table table-bordered">
<tr class=‘success‘>
<td>user</td>
<td>pwd</td>
<td>action</td>
</tr>
{% for user in userlist %}
<tr class=‘info‘>
<td>{{user[0]}}</td>
<td>{{user[1]}}</td>
<td>
<a class="btn btn-danger btn-xs" href="/delete/?username={{user[0]}}">delete</a>
<a class="btn btn-info btn-xs" href="/update/?username={{user[0]}}">update</a>
<a href="/add/">add</a>
</td>
</tr>
{% endfor %}
</table>
</div>
</div>
</div>
</body>
</html>
4.用户信息文件
user.txt
tom:123
jack:123
user2:000
user1:pwd1
