express登录控制案例
express登录控制案例
主要利用mongoose、express-session、body-parser模块。
首先利用express-generator生成一个express项目。把默认生成的index.ejs页面作为访问控制页面，新增登录页面login.ejs、注册页面register.ejs，相应的路由控制文件和用户模型models/user.js。
所有的控制围绕req.session展开，访问index.ejs页面在req.session.user不存在时，重定向到登录页面；登录时，获取post请求的相关参数，在数据库查询相应的数据，并做出对应的响应；注册同理，查询数据库是否存在所注册的账号，并作出相应的响应；登出及清空所有session。
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