【user.py】添加登录接口

+from flask import Blueprint, redirect, render_template, request,Flask, session
+
+from utils.query import query
+from utils.errResp import errorResponse
+
+
+ub = Blueprint('user',__name__,url_prefix='/user',template_folder='templates')
+
+@ub.route('/login',methods=['GET','POST'])
+def login():
+    if request.method == 'GET':
+        return render_template('login.html')
+    else:
+        def filter_fn(user):
+            return request.form['username'] in user and request.form['password'] in user
+        users = query('select * from user', [], 'select')
+        login_success = list(filter(filter_fn,users))
+        if not len(login_success):return errorResponse('账号或密码错误')
+
+        session['username'] = request.form['username']
+        return redirect('/page/home')