配置一个app的步骤

//引入模块var exp = require(‘express‘),      http = require(‘http‘);//模块初始化
var app = exp();//设置端口号app.set(‘port‘,8088);//寻找静态资源路径app.use(exp.static(__dirname+‘/frontEnd‘));//设置网站图标app.use(exp.favicon());//输出日志app.use(exp.logger(‘dev‘));//允许方法的重置app.use(exp.bodyParser());app.use(exp.methodOverride());//输出开发错误if(‘development‘ == ‘env‘){    app.use(exp.errorHandler());}//创建服务http.createServer(app).listen(app.get(‘port‘),function(){    console.log(‘Express port‘+app.get(‘port‘));})