在nodejs+express中,采用nodejs后端路由控制用户登录后,为了加强前端的安全性控制,阻止用户通过在浏览器地址栏中输入地址访问后台接口,在app.js中需要加入拦截器进行拦截:
/*************************导入需要的包************************************************/
var express = require('express'); var path = require('path'); var favicon = require('serve-favicon'); var logger = require('morgan'); var cookieParser = require('cookie-parser');//1、引入cookie模块,拦截器中req.cookies.userCookies是依赖于该模块的; var bodyParser = require('body-parser'); var ejs=require("ejs");
/**************************设置nodejs路由对应的文件***************************/
var index = require('./routes/index'); var ccap=require('./routes/ccap'); var jiami=require("./routes/jiami"); var changePwd=require('./routes/changePwd'); var login=require("./routes/login"); var business=require("./routes/pay/business"); var logs=require("./routes/pay/logs"); var channel=require("./routes/pay/channel"); var config=require("./routes/pay/config");
/******************express配置模板视图**********************************/
var app = express();
// view engine setup app.set('views', path.join(__dirname, 'views')); //app.set('view engine', 'ejs');//设置视图为ejs引擎 app.engine('html',ejs.__express); //设置视图为html引擎,ejs在页面仍然可用 app.set('view engine', 'html');//设置视图为html引擎,ejs在页面仍然可用
/******************引入要使用的模块**********************************************/
// uncomment after placing your favicon in /public
//app.use(favicon(path.join(__dirname, 'public', 'favicon.ico')));
app.use(logger('dev'));
app.use(bodyParser.json());
app.use(bodyParser.urlencoded({ extended: false }));
app.use(cookieParser());//2、引入cookie,h后可开始使用cookie模块获取客户端的cookies;
app.use(express.static(path.join(__dirname, 'public')));
/*************************登录拦截器**************************************/
app.use(function (req, res, next) { var url = req.originalUrl;//获取浏览器中当前访问的nodejs路由地址; var userCookies=req.cookies.userCookies; //获取客户端存取的cookie,userCookies为cookie的名称;
//有时拿不到cookie值,可能是因为拦截器位置放错,获取该cookie的方式是依赖于nodejs自带的cookie模块,
//因此,获取cookie必须在1,2步之后才能使用,否则拿到的cookie就是undefined. console.log("123"+url); console.log("app获得cookie"+req.cookies.userCookies+"真假11111:"+(req.cookies.userCookies==undefined)); if(url=='/login'&&!(userCookies==undefined)){ //通过判断控制用户登录后不能访问登录页面; return res.redirect('/');//页面重定向; } next(); });
/*********************************node路由配置**********************************/
app.use('/', index); app.use('/ccap',ccap); app.use("/app/jiami",jiami); app.use("/login",login); app.use("/changePwd",changePwd); app.use("/business",business); app.use("/logs",logs); app.use("/channel",channel); app.use("/config",config);
/*******************************捕获异常***********************************/
// catch 404 and forward to error handler app.use(function(req, res, next) { var err = new Error('Not Found'); err.status = 404; next(err); }); // error handlers // development error handler // will print stacktrace if (app.get('env') === 'development') { app.use(function(err, req, res, next) { res.status(err.status || 500); res.render('error', { message: err.message, error: err }); }); } // production error handler // no stacktraces leaked to user app.use(function(err, req, res, next) { res.status(err.status || 500); res.render('error', { message: err.message, error: {} }); }); module.exports = app;