流程

1. 点击登录按钮，前端把当前的url，传给后台
2. 后台把url传给，登录页面
3. 登录页面，点击登录，跳转到登录前的页面

效果

第一步

第二步

第三步

router

    router.get('/login', initMiddleware, controller.default.pass.login);

点击登录按钮

view

appviewdefaultpublicheader.html

<li><a href="javascript:void(0)" id="loginButton" target="_blank">登录</a></li>

apppublicdefaultjsbase.js

        initLogin: function() {$("#loginButton").click(function() {// alert(location.href);location.href = '/login?returnUrl=' + encodeURIComponent(location.href);})}

controller

appcontrollerdefaultpass.js

    async login() {//获取returnUrlvar returnUrl = this.ctx.request.query.returnUrl;returnUrl = returnUrl ? decodeURIComponent(returnUrl) : '/';await this.ctx.render('default/pass/login.html', {returnUrl: returnUrl});}

登录页面

appviewdefaultpasslogin.html

<input type="hidden" name="returnUrl" id="returnUrl" value="<%=returnUrl%>" />

            $("#doLogin").click(function(e) {var returnUrl = $('#returnUrl').val();var username = $('#username').val();var password = $('#password').val();var identify_code = $('#identify_code').val();var reg = /^[\d]{11}$/;if (!reg.test(username)) {alert('手机号输入错误');return false;}if (identify_code.length < 4) {alert('验证码长度不合法');return false;}//ajax请求$.post('/pass/doLogin', {username: username,identify_code: identify_code,password: password}, function(response) {console.log(response);if (response.success == true) {// location.href = "/";location.href = returnUrl;} else {$("#identify_code_img").attr('src', '/verify?mt=' + Math.random());alert(response.msg);}})})

去结算的登录跳转

中间件

appmiddlewareuserauth.js

module.exports = (options, app) => {return async function init(ctx, next) {//判断前台用户是否登录   如果登录可以进入 （ 去结算  用户中心）    如果没有登录直接跳转到登录var userinfo = ctx.service.cookies.get('userinfo');var prevPage = ctx.request.headers.referer; //上一个页面的地址if (userinfo && userinfo._id && userinfo.phone) {//判断数据库里面有没有当前用户                var userResutl = await ctx.model.User.find({ "_id": userinfo._id, "phone": userinfo.phone });if (userResutl && userResutl.length > 0) {//注意await next();} else {// ctx.redirect('/login');ctx.redirect('/login?returnUrl=' + encodeURIComponent(prevPage));}} else {// ctx.redirect('/login');ctx.redirect('/login?returnUrl=' + encodeURIComponent(prevPage));}};
};

效果