跳至內容

路由

Hono 的路由機制靈活且直觀。讓我們來看一下。

基本

ts
// HTTP Methods
app
.
get
('/', (
c
) =>
c
.
text
('GET /'))
app
.
post
('/', (
c
) =>
c
.
text
('POST /'))
app
.
put
('/', (
c
) =>
c
.
text
('PUT /'))
app
.
delete
('/', (
c
) =>
c
.
text
('DELETE /'))
// Wildcard
app
.
get
('/wild/*/card', (
c
) => {
return
c
.
text
('GET /wild/*/card')
}) // Any HTTP methods
app
.
all
('/hello', (
c
) =>
c
.
text
('Any Method /hello'))
// Custom HTTP method
app
.
on
('PURGE', '/cache', (
c
) =>
c
.
text
('PURGE Method /cache'))
// Multiple Method
app
.
on
(['PUT', 'DELETE'], '/post', (
c
) =>
c
.
text
('PUT or DELETE /post')
) // Multiple Paths
app
.
on
('GET', ['/hello', '/ja/hello', '/en/hello'], (
c
) =>
c
.
text
('Hello')
)

路徑參數

ts
app
.
get
('/user/:name', async (
c
) => {
const
name
=
c
.
req
.
param
('name')
// ... })

或一次取得所有參數

ts
app
.
get
('/posts/:id/comment/:comment_id', async (
c
) => {
const {
id
,
comment_id
} =
c
.
req
.
param
()
// ... })

可選參數

ts
// Will match `/api/animal` and `/api/animal/:type`
app
.
get
('/api/animal/:type?', (
c
) =>
c
.
text
('Animal!'))

正規表達式

ts
app
.
get
('/post/:date{[0-9]+}/:title{[a-z]+}', async (
c
) => {
const {
date
,
title
} =
c
.
req
.
param
()
// ... })

包含斜線

ts
app
.
get
('/posts/:filename{.+\\.png$}', async (
c
) => {
//... })

鏈式路由

ts
app
.
get
('/endpoint', (
c
) => {
return
c
.
text
('GET /endpoint')
}) .
post
((
c
) => {
return
c
.
text
('POST /endpoint')
}) .
delete
((
c
) => {
return
c
.
text
('DELETE /endpoint')
})

分組

您可以使用 Hono 實例對路由進行分組,並使用 route 方法將它們添加到主應用程式。

ts
const 
book
= new
Hono
()
book
.
get
('/', (
c
) =>
c
.
text
('List Books')) // GET /book
book
.
get
('/:id', (
c
) => {
// GET /book/:id const
id
=
c
.
req
.
param
('id')
return
c
.
text
('Get Book: ' +
id
)
})
book
.
post
('/', (
c
) =>
c
.
text
('Create Book')) // POST /book
const
app
= new
Hono
()
app
.
route
('/book',
book
)

不更改基礎路徑的分組

您也可以在保持基礎路徑的情況下對多個實例進行分組。

ts
const 
book
= new
Hono
()
book
.
get
('/book', (
c
) =>
c
.
text
('List Books')) // GET /book
book
.
post
('/book', (
c
) =>
c
.
text
('Create Book')) // POST /book
const
user
= new
Hono
().
basePath
('/user')
user
.
get
('/', (
c
) =>
c
.
text
('List Users')) // GET /user
user
.
post
('/', (
c
) =>
c
.
text
('Create User')) // POST /user
const
app
= new
Hono
()
app
.
route
('/',
book
) // Handle /book
app
.
route
('/',
user
) // Handle /user

基礎路徑

您可以指定基礎路徑。

ts
const 
api
= new
Hono
().
basePath
('/api')
api
.
get
('/book', (
c
) =>
c
.
text
('List Books')) // GET /api/book

使用主機名稱進行路由

如果包含主機名稱,則運作正常。

ts
const 
app
= new
Hono
({
getPath
: (
req
) =>
req
.
url
.
replace
(/^https?:\/([^?]+).*$/, '$1'),
})
app
.
get
('/www1.example.com/hello', (
c
) =>
c
.
text
('hello www1'))
app
.
get
('/www2.example.com/hello', (
c
) =>
c
.
text
('hello www2'))

使用 host 標頭值進行路由

如果您在 Hono 建構函式中設定 getPath() 函式,Hono 可以處理 host 標頭值。

ts
const 
app
= new
Hono
({
getPath
: (
req
) =>
'/' +
req
.
headers
.
get
('host') +
req
.
url
.
replace
(/^https?:\/\/[^/]+(\/[^?]*)/, '$1'),
})
app
.
get
('/www1.example.com/hello', (
c
) =>
c
.
text
('hello www1'))
// A following request will match the route: // new Request('http://www1.example.com/hello', { // headers: { host: 'www1.example.com' }, // })

透過應用此方法,例如,您可以根據 User-Agent 標頭變更路由。

路由優先級

處理程序或中介軟體將按照註冊順序執行。

ts
app
.
get
('/book/a', (
c
) =>
c
.
text
('a')) // a
app
.
get
('/book/:slug', (
c
) =>
c
.
text
('common')) // common
GET /book/a ---> `a`
GET /book/b ---> `common`

當執行處理程序時,該進程將停止。

ts
app
.
get
('*', (
c
) =>
c
.
text
('common')) // common
app
.
get
('/foo', (
c
) =>
c
.
text
('foo')) // foo
GET /foo ---> `common` // foo will not be dispatched

如果您有想要執行的中介軟體,請在處理程式上方編寫程式碼。

ts
app
.
use
(
logger
())
app
.
get
('/foo', (
c
) =>
c
.
text
('foo'))

如果您想要有「後備」處理程式,請在其他處理程式下方編寫程式碼。

ts
app
.
get
('/bar', (
c
) =>
c
.
text
('bar')) // bar
app
.
get
('*', (
c
) =>
c
.
text
('fallback')) // fallback
GET /bar ---> `bar`
GET /foo ---> `fallback`

分組順序

請注意,路由分組的錯誤很難察覺。route() 函數會從第二個參數 (例如 threetwo) 中取得儲存的路由,並將其新增到它自己的 (twoapp) 路由中。

ts
three.get('/hi', (c) => c.text('hi'))
two.route('/three', three)
app.route('/two', two)

export default app

它將返回 200 回應。

GET /two/three/hi ---> `hi`

但是,如果它們的順序錯誤,則會返回 404。

ts
three
.
get
('/hi', (
c
) =>
c
.
text
('hi'))
app
.
route
('/two',
two
) // `two` does not have routes
two
.
route
('/three',
three
)
export default
app
GET /two/three/hi ---> 404 Not Found

以 MIT 許可證發佈。