在Express.js中处理对路由的多个回调

我阅读了Express.js文档，其中谈到了如何使用以下语法处理对路由的回调：

app.get(path, callback [, callback ...])

然而，我似乎找不到一个很好的语法示例来处理catch-all *路由的多个回调。具体来说，路由处理程序需要：

1.）使用index.html服务所有视图请求，但随后
2.）通过返回适当的文件来为index.html中指定的资产提供回调请求。

需要什么特定的语法来完成管理所有回调，以便Express.js服务器返回每个请求的资源文件，包括JavaScript、css等

当我使用以下内容时：

app.get('*', function(req, res) {
    console.log('inside * route!');           
    if(req.accepts('html')){
        console.log('req.accepts html');
        console.log('req.url is: '+ req.url);
    }
    if(req.accepts('text/html')){
        console.log('req.accepts text/html');
        console.log('req.url is: ' + req.url);
    }
    if(req.accepts('application/json')){
        console.log('req.accepts application/json');
        console.log('req.url is: ' + req.url);
    }
    if(req.accepts('json', 'text')){
        console.log('req.accepts json, text');
        console.log('req.url is: ' + req.url);
    }
    if(req.accepts('text/javascript')){
        console.log('req.accepts html');
        console.log('req.url is: ' + req.url);
    }
    if(req.accepts('text/css')){
        console.log('req.accepts text/css');
        console.log('req.url is: ' + req.url);
    }
    res.sendFile(path.resolve('dist/client/index.html')); // load the single view file (angular will handle the front-end)
});

结果是：

1.）index.html用于响应每种文件类型的每一个请求，包括JavaScript、css等。
2.）条件语句不区分所请求文件的内容类型。

控制台打印出来的文件是：

App listening on port 8080
inside * route!
req.accepts html
req.url is: /
req.accepts text/html
req.url is: /
req.accepts application/json
req.url is: /
req.accepts json, text
req.url is: /
req.accepts html
req.url is: /
req.accepts text/css
req.url is: /
GET / 304 30.181 ms - -
inside * route!
req.accepts html
req.url is: /boot.css
req.accepts text/html
req.url is: /boot.css
req.accepts application/json
req.url is: /boot.css
req.accepts json, text
req.url is: /boot.css
req.accepts html
req.url is: /boot.css
req.accepts text/css
req.url is: /boot.css
inside * route!
req.accepts html
req.url is: /vendor.js
req.accepts text/html
req.url is: /vendor.js
req.accepts application/json
req.url is: /vendor.js
req.accepts json, text
req.url is: /vendor.js
req.accepts html
req.url is: /vendor.js
req.accepts text/css
req.url is: /vendor.js
inside * route!
req.accepts html
req.url is: /boot.js
req.accepts text/html
req.url is: /boot.js
req.accepts application/json
req.url is: /boot.js
req.accepts json, text
req.url is: /boot.js
req.accepts html
req.url is: /boot.js
req.accepts text/css
req.url is: /boot.js
GET /boot.css 304 2.213 ms - -
GET /vendor.js 304 2.886 ms - -
GET /boot.js 304 2.638 ms - -

作为参考，Express.js应用程序的根index.html是：

// set up ======================================================================
var express  = require('express');
var app      = express();                               // create our app w/ express
var port     = process.env.PORT || 8080;                // set the port
var morgan = require('morgan');             // log requests to the console (express4)
var bodyParser = require('body-parser');    // pull information from HTML POST (express4)
var methodOverride = require('method-override'); // simulate DELETE and PUT (express4)
app.use(express.static(__dirname + '/dist/client'));                 // set the static files location /public/img will be /img for users
app.use(morgan('dev'));                                         // log every request to the console
app.use(bodyParser.urlencoded({'extended':'true'}));            // parse application/x-www-form-urlencoded
app.use(bodyParser.json());                                     // parse application/json
app.use(bodyParser.json({ type: 'application/vnd.api+json' })); // parse application/vnd.api+json as json
app.use(methodOverride());
app.use('/scripts', express.static(__dirname + '/node_modules/'));
// load the routes
require('./router')(app);
// listen (start app with node server.js) ======================================
app.listen(port);
console.log("App listening on port " + port);