在升级到Express 4并删除app之后.路由，我正在努力让中间件在路由执行之后执行.
e、 g.以下代码正确响应"hello"，但从不调用已配置的中间件
var express = require( "express" )();
express.get( "/", function( req, res ) {
res.send( "hello" );
} );
express.use( function( req, res, next ) {
console.log( "world" );
next();
} );
express.listen( 8888 );
澄清:
以下代码在控制台上显示"before"，但不显示"after":
var express = require( "express" )();
express.use( function( req, res, next ) {
console.log( "before" );
next();
} );
express.get( "/", function( req, res ) {
res.send( "hello" );
} );
express.use( function( req, res, next ) {
console.log( "after" );
next();
} );
express.listen( 8888 );