这篇教程Flask登录注册项目的简单实现写得很实用，希望能帮到您。
本文主要介绍了Flask登录注册项目的简单实现，分享给大家，具体如下： 目录结构
配置文件设计
/templates/config.py #数据库连接配置import pymysqlconn = pymysql.connect( host='192.XXX.XXX.XX', port=320xx, user='root', password='123456', database='test_XX' ) 首页/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>林家小猪测试小站</title></head><body> <div> <h1>您好，{{ username }}，欢迎来到我的小站</h1> <a href="{{ url_for('user_login') }}" rel="external nofollow" rel="external nofollow" >退出</a> <br/> </div></body></html>登录页面/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>登录</title></head><body> <div> <h1>用户登录</h1> <!--将登陆信息放到一个form中--> <form method="POST"> <input type="text" name="username" placeholder="请输入用户名" /> <br/> <input type="password" name="password" placeholder="请输入密码（小于12位）" /> <br/> <!--jinja2的函数--> {% if message %} {{message}} {% endif %} <br/> <input type="submit" value="登录" /> <input type="reset" value="重置" /> <!--跳转到register的页面--> <a href="{{ url_for('register') }}" rel="external nofollow" >注册</a> </form> </div></body></html>注册页面/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>注册</title></head><body> <div> <h1>用户注册</h1> <form method="POST"> <input type="text" name="username" placeholder="请输入用户名" /> <br/> <input type="password" name="password" placeholder="请输入密码（小于12位）" /> <br/> <!--jinja2的函数--> {% if message %} {{message}} {% endif %} <br/> <input type="submit" value="注册" /> <input type="reset" value="重置" /> <a href="{{ url_for('user_login') }}" rel="external nofollow" rel="external nofollow" >登录</a> </form> </div></body></html>登录校验 /model/check_login.py from templates.config import conncur = conn.cursor()def is_null(username,password): if(username==''or password==''): return True else: return Falsedef 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 Truedef 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 注册校验 /model/regist_login.py from templates.config import conncur = 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() # 对数据库内容有改变，需要commit() conn.close()最后编辑运行文件
app.py from flask import Flask,render_templatefrom flask import redirectfrom flask import url_forfrom flask import requestfrom model.check_login import is_existed,exist_user,is_nullfrom model.check_regist import add_userapp = 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': # 注册发送的请求为POST请求 username = request.form['username'] password = request.form['password'] if is_null(username,password): login_massage = "温馨提示：账号和密码是必填" 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：密码错误，请输入正确密码" return render_template('login.html', message=login_massage) else: login_massage = "不存在该用户" 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 = "温馨提示：账号和密码是必填" 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()到此这篇关于Flask登录注册项目的简单实现的文章就介绍到这了,更多相关Flask登录注册内容请搜索51zixue.net以前的文章或继续浏览下面的相关文章希望大家以后多多支持51zixue.net！
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