使用 uri 將 URI 編碼為字串

任務

網頁程式設計 / URL 和 URI 處理 / 將 URI 編碼為字串

使用的 Opam 套件

uri 使用版本測試：4.2.0 — 使用的函式庫：uri

程式碼
(* In order to encode a URI, we use the `Uri.make` function whose parameters are all optional (except the `()` at the end). ) let uri = Uri.make ~scheme:"https" ~userinfo:"login:password" ~host:"ocaml.org" ~port:8080 ~path:"/search" ~query:["param1",["a";"b"];"param2",["déjà "]] ~fragment:"anchor" () let () = assert (Uri.to_string uri = "https://login:password@ocaml.org:8080/search?param1=a,b&param2=d%C3%A9j%C3%A0%20#anchor") ( A different approach is to start with a known URI and change some of its components. The following functions are available: `with_scheme`, `with_userinfo`, `with_password`, `with_port`, `with_path`, `with_query`, and `with_fragment`. Except for `with_path` and `with_query`, all of them take an `option` type parameter in order to allow removing that specific component from the URI. Note: these functions have a first parameter, which is the URI to modify, and a second that contains the corresponding field's new value. ) let uri = Uri.of_string "https://ocaml.dev.org.tw/" let uri' = uri |> Fun.flip Uri.with_path "/search" |> Fun.flip Uri.with_port (Some 8080) |> Fun.flip Uri.with_userinfo (Some "user:password") |> Fun.flip Uri.with_query ["param1", ["42"]] ( We can also add parameters, one by one or from a list *) let uri'' = Uri.add_query_param uri' ("param2",["**"]) let uri''' = Uri.add_query_params uri'' ["param3",["?"];"param4",["&"]]

為了編碼 URI，我們使用 Uri.make 函式，其參數皆為可選（除了最後的 ()）。

let uri =
  Uri.make
    ~scheme:"https"
    ~userinfo:"login:password"
    ~host:"ocaml.org"
    ~port:8080
    ~path:"/search"
    ~query:["param1",["a";"b"];"param2",["déjà "]]
    ~fragment:"anchor"
    ()
let () =
  assert (Uri.to_string uri
           = "https://login:password@ocaml.org:8080/search?param1=a,b&param2=d%C3%A9j%C3%A0%20#anchor")

另一種方法是從已知的 URI 開始，並更改其某些元件。

以下函式可用：with_scheme、with_userinfo、with_password、with_port、with_path、with_query 和 with_fragment。

除了 with_path 和 with_query 之外，所有函式都接受一個 option 類型的參數，以便從 URI 中移除該特定元件。

注意：這些函式的第一個參數是要修改的 URI，第二個參數包含相應欄位的新值。

let uri = Uri.of_string "https://ocaml.dev.org.tw/"

let uri' = uri
  |> Fun.flip Uri.with_path "/search"
  |> Fun.flip Uri.with_port (Some 8080)
  |> Fun.flip Uri.with_userinfo (Some "user:password")
  |> Fun.flip Uri.with_query ["param1", ["42"]]

我們也可以逐個或從列表新增參數

let uri'' = Uri.add_query_param uri' ("param2",["**"])
let uri''' = Uri.add_query_params uri'' ["param3",["?"];"param4",["&"]]

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