师生网上办事大厅中的需求分析与实现技术

# 登录功能示例（Python Flask）

from flask import Flask, request, redirect, url_for

app = Flask(__name__)

# 模拟数据库

users = {

"student123": "password123",

"teacher456": "password456"

}

@app.route('/login', methods=['GET', 'POST'])

def login():

if request.method == 'POST':

username = request.form['username']

password = request.form['password']

if username in users and users[username] == password:

return f"欢迎 {username}！"

else:

return "用户名或密码错误，请重试。"

return '''

'''

if __name__ == '__main__':

app.run(debug=True)

class ApprovalProcess:

def __init__(self):

self.state = "pending"

def submit(self):

if self.state == "pending":

self.state = "submitted"

print("申请已提交")

else:

print("当前状态不允许提交")

def review(self):

if self.state == "submitted":

self.state = "reviewing"

print("申请正在审核中")

else:

print("当前状态不允许审核")

def approve(self):

if self.state == "reviewing":

self.state = "approved"

print("申请已通过")

else:

print("当前状态不允许通过")

def reject(self):

if self.state == "reviewing":

self.state = "rejected"

print("申请被拒绝")

else:

print("当前状态不允许拒绝")

# 示例使用

process = ApprovalProcess()

process.submit()

process.review()

process.approve()

from flask import Flask, request, jsonify

from flask_sqlalchemy import SQLAlchemy

app = Flask(__name__)

app.config['SQLALCHEMY_DATABASE_URI'] = 'sqlite:///applications.db'

db = SQLAlchemy(app)

class Application(db.Model):

id = db.Column(db.Integer, primary_key=True)

student_id = db.Column(db.String(80), nullable=False)

course_name = db.Column(db.String(120), nullable=False)

status = db.Column(db.String(50), default='pending')

@app.route('/api/applications', methods=['POST'])

def create_application():

data = request.get_json()

new_app = Application(

student_id=data['student_id'],

course_name=data['course_name']

)

db.session.add(new_app)

db.session.commit()

return jsonify({"message": "申请成功", "id": new_app.id}), 201

if __name__ == '__main__':

with app.app_context():

db.create_all()

app.run(debug=True)