node.js - 在 Express 中使用子路由器时获取完整的路由器模式？

Question

假设我在以下 Express 应用中请求 HTTP 端点 GET/foobar/baz，我如何通过 req 对象获取用于的原始模式匹配整个 URL(即 /foo(bar)?/:id):

var app = express()
var sub = express.Router()

sub.get('/:id', function (req, res, next) {
   // if `/foobar/baz` is requested:
   console.log(req.url)         // '/baz'
   console.log(req.baseUrl)     // '/foobar'
   console.log(req.originalUrl) // '/foobar/baz'
   console.log(req.route.path)  // '/:id'
})

app.use('/foo(bar)?', sub)

可以使用 req.route.path 访问子路由模式，它给我 /:id，但父路由模式 /foo( bar)? 似乎无法获得。

Answer 1

您可以使用mountpath属性(property)

The app.mountpath property is the path pattern(s) on which a sub app was mounted.

var app = express()
var sub = express.Router()

sub.get('/:id', function (req, res, next) {
   // if `/foobar/baz` is requested:

    console.log( sub.mountpath ); // '/foo(bar)?'

    console.log(req.route.path)         // '/:id'

})

app.use('/foo(bar)?', sub);