本文主要介紹了Flask登錄注冊項目的簡單實現，分享給大家，具體如下：
目錄結構
配置文件設計
/templates/config.py
#數據庫連接配置
import pymysql
conn = pymysql.connect(
host='192.XXX.XXX.XX',
port=320xx,
user='root',
password='123456',
database='test_XX'
)
首頁/templates/index.html
!DOCTYPE html>
html lang="en">
head>
meta charset="UTF-8">
{# link rel=stylesheet type=text/css href="{{ url_for('static', filename='style.css') }}" rel="external nofollow" rel="external nofollow" >#}
meta name="viewport" content="width=device-width, initial-scale=1.0">
link rel="stylesheet" type="text/css" href="/static/style.css" rel="external nofollow" rel="external nofollow" rel="external nofollow" >
title>林家小豬測試小站/title>
/head>
body>
div>
h1>您好，{{ username }}，歡迎來到我的小站/h1>
a href="{{ url_for('user_login') }}" rel="external nofollow" rel="external nofollow" >退出/a>
br/>
/div>
/body>
/html>
登錄頁面/templates/login.html
!DOCTYPE html>
html lang="en">
head>
meta charset="UTF-8">
meta name="viewport" content="width=device-width, initial-scale=1.0">
link rel="stylesheet" type="text/css" href="/static/style.css" rel="external nofollow" rel="external nofollow" rel="external nofollow" >
{# link rel="stylesheet" href="{{ url_for('static', filename='style.css') }}" rel="external nofollow" rel="external nofollow" type="text/css">#}
title>登錄/title>
/head>
body>
div>
h1>用戶登錄/h1>
!--將登陸信息放到一個form中-->
form method="POST">
input type="text" name="username" placeholder="請輸入用戶名" />
br/>
input type="password" name="password" placeholder="請輸入密碼（小于12位）" />
br/>
!--jinja2的函數-->
{% if message %} {{message}} {% endif %}
br/>
input type="submit" value="登錄" />
input type="reset" value="重置" />
!--跳轉到register的頁面-->
a href="{{ url_for('register') }}" rel="external nofollow" >注冊/a>
/form>
/div>
/body>
/html>
注冊頁面/templates/register.html
!DOCTYPE html>
html lang="en">
head>
meta charset="UTF-8">
meta name="viewport" content="width=device-width, initial-scale=1.0">
link rel="stylesheet" type="text/css" href="/static/style.css" rel="external nofollow" rel="external nofollow" rel="external nofollow" >
title>注冊/title>
/head>
body>
div>
h1>用戶注冊/h1>
form method="POST">
input type="text" name="username" placeholder="請輸入用戶名" />
br/>
input type="password" name="password" placeholder="請輸入密碼（小于12位）" />
br/>
!--jinja2的函數-->
{% if message %} {{message}} {% endif %}
br/>
input type="submit" value="注冊" />
input type="reset" value="重置" />
a href="{{ url_for('user_login') }}" rel="external nofollow" rel="external nofollow" >登錄/a>
/form>
/div>
/body>
/html>
登錄校驗 /model/check_login.py
from templates.config import conn
cur = conn.cursor()
def is_null(username,password):
if(username==''or password==''):
return True
else:
return False
def is_existed(username,password):
sql="SELECT * FROM user WHERE username ='%s' and password ='%s'" %(username,password)
cur.execute(sql)
result = cur.fetchall()
if (len(result) == 0):
return False
else:
return True
def exist_user(username):
sql = "SELECT * FROM user WHERE username ='%s'" % (username)
cur.execute(sql)
result = cur.fetchall()
if (len(result) == 0):
return False
else:
return True
注冊校驗 /model/regist_login.py
from templates.config import conn
cur = conn.cursor()
def add_user(username, password):
# sql commands
sql = "INSERT INTO user(username, password) VALUES ('%s','%s')" %(username, password)
# execute(sql)
cur.execute(sql)
# commit
conn.commit() # 對數據庫內容有改變，需要commit()
conn.close()
最后編輯運行文件
app.py
from flask import Flask,render_template
from flask import redirect
from flask import url_for
from flask import request
from model.check_login import is_existed,exist_user,is_null
from model.check_regist import add_user
app = Flask(__name__)
@app.route('/')
def index():
return redirect( url_for('user_login') )
@app.route('/user_login',methods=['GET','POST'])
def user_login():
if request.method=='POST': # 注冊發送的請求為POST請求
username = request.form['username']
password = request.form['password']
if is_null(username,password):
login_massage = "溫馨提示：賬號和密碼是必填"
return render_template('login.html', message=login_massage)
elif is_existed(username, password):
return render_template('index.html', username=username)
elif exist_user(username):
login_massage = "提示：密碼錯誤，請輸入正確密碼"
return render_template('login.html', message=login_massage)
else:
login_massage = "不存在該用戶"
return render_template('login.html', message=login_massage)
return render_template('login.html')
@app.route("/regiser",methods=["GET", 'POST'])
def register():
if request.method == 'POST':
username = request.form['username']
password = request.form['password']
if is_null(username,password):
login_massage = "溫馨提示：賬號和密碼是必填"
return render_template('register.html', message=login_massage)
elif exist_user(username):
return redirect(url_for('user_login'))
else:
add_user(request.form['username'], request.form['password'] )
return render_template('index.html', username=username)
return render_template('register.html')
if __name__=="__main__":
app.run()
到此這篇關于Flask登錄注冊項目的簡單實現的文章就介紹到這了,更多相關Flask登錄注冊內容請搜索腳本之家以前的文章或繼續瀏覽下面的相關文章希望大家以后多多支持腳本之家！
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