python实现注册登陆功能
login.html页面css
<!DOCTYPE html>
<html lang="en">
<head>
<title></title>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<link href="css/style.css" rel="stylesheet">
</head>
<body>
<form method="get" action='/login'>
<label>用户名：<input type="text" name="user" value=""></label><br>
<label>密码：<input type="password" name="password" value=""></label><br>
<input type="submit" value="登陆">
</form>
</body>
</html>
regist.html页面html
<!DOCTYPE html>
<html lang="en">
<head>
<title></title>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<link href="css/style.css" rel="stylesheet">
</head>
<body>
<form method="get" action='/registuser'>
<label>用户名：<input type="text" name="user" value=""></label>
<label>密码：<input type="password" name="password" value=""></label>
<label>昵称：<input type="text" name="nickname" value=""></label>
<input type="submit" value="注册">
</form>
</body>
</html>
pyhton后端python
main.pymysql
#!/usr/bin/python3.5
# -*- coding: UTF-8 -*-
# 导入数据库模块
import pymysql
# 导入Flask框架，这个框架能够快捷地实现了一个WSGI应用
from flask import Flask
# 默认状况下，flask在程序文件夹中的templates子文件夹中寻找模块
from flask import render_template
# 导入前台请求的request模块
from flask import request
import traceback
import datetime
#!/usr/bin/python
import json
# 传递根目录
app = Flask(__name__)
# 默认路径访问登陆页面
@app.route('/')
def login():
return render_template('login.html')
# 默认路径访问注册页面
@app.route('/regist')
def regist():
return render_template('regist.html')
# 设置响应头
def Response_headers(content):
resp = Response(content)
resp.headers['Access-Control-Allow-Origin'] = '*'
return resp
# 获取注册请求及处理
@app.route('/registuser')
def getRigistRequest():
# 把用户名和密码注册到数据库中
user_id = request.args.get('user')
user_pwd = request.args.get('password')
user_nick = request.args.get('nickname')
dt = datetime.datetime.now().strftime("%Y-%m-%d %H:%M:%S")
# 链接数据库,此前在数据库中建立数据库TESTDB
db = pymysql.connect("localhost", "user", "password", "DBNAME")
# 使用cursor()方法获取操做游标
cursor = db.cursor()
# SQL 插入语句
# sql = "INSERT INTO user(user, pwd, nick_name) VALUES (" + request.args.get('user') + ", " + request.args.get('password') + ")"
sql = "INSERT INTO user(user, pwd, nick_name, creattime) VALUES ('%s', '%s', '%s', '%s')" % (
user_id, user_pwd, user_nick, dt)
try:
# 执行sql语句
cursor.execute(sql)
# 提交到数据库执行
db.commit()
# 注册成功以后跳转到登陆页面
return render_template('login.html')
except:
# 抛出错误信息
traceback.print_exc()
# 若是发生错误则回滚
db.rollback()
return '注册失败'
# 关闭数据库链接
db.close()
# 获取登陆参数及处理
@app.route('/login')
def getLoginRequest():
# 查询用户名及密码是否匹配及存在
# 链接数据库,此前在数据库中建立数据库TESTDB
db = pymysql.connect("localhost", "user", "password", "DBNAME")
# 使用cursor()方法获取操做游标
cursor = db.cursor()
# SQL 查询语句
user_id = request.args.get('user')
user_pwd = request.args.get('password')
sql = "select * from user where user=%s and pwd=%s" %(user_id, user_pwd)
try:
# 执行sql语句
cursor.execute(sql)
results = cursor.fetchall()
print(len(results))
if len(results) == 1:
data = {}
data["code"] = '登陆成功'
for row in results:
data["id"] = row[0]
data["pwd"] = row[1]
data["name"] = row[2]
data["time"] = row[3]
return json.dumps(data)
else:
return '用户名或密码不正确'
# 提交到数据库执行
db.commit()
except:
# 若是发生错误则回滚
traceback.print_exc()
db.rollback()
# 关闭数据库链接
db.close()
# 使用__name__ == '__main__'是 Python 的惯用法，确保直接执行此脚本时才
# 启动服务器，若其余程序调用该脚本可能父级程序会启动不一样的服务器
if __name__ == '__main__':
app.run(port=3000)
数据库格式sql