Golang : HttpRouter multiplexer routing example



Tags : golang http httprouter multiplexer

HttpRouter attempts to transcend other Golang multiplexers by claiming to have better variables and routing supports. It also claimed to scale better.

HttpRouter handles parameters differently from other routers/multiplexers. For example, it requires 3rd parameters in a function to get the URL parameters.

 params httprouter.Params 

instead of inside the function block

 params := r.URL.Query()
 name := params.Get(":name")

This is a code example on how to use HttpRouter.

 package main

 import (
 "fmt"
 "github.com/julienschmidt/httprouter"
 "net/http"
 )

 func SayHelloWorld(w http.ResponseWriter, r *http.Request, _ httprouter.Params) {
 w.Write([]byte("Hello, World!"))
 }

 func ReplyName(w http.ResponseWriter, r *http.Request, params httprouter.Params) {

 //parameters := r.URL.Query()

 name := params.ByName("name")
 w.Write([]byte(fmt.Sprintf("Hello %s !", name)))
 }

 func main() {
 mx := httprouter.New()
 mx.GET("/", SayHelloWorld)
 mx.GET("/:name", ReplyName)

 http.Handle("/", mx)
 http.ListenAndServe(":8080", mx)
 }

Sample output :

http://localhost:8080/Adam

Hello Adam !

http://localhost:8080/

Hello World !

For a full list of HttpRouter's features, please see https://github.com/julienschmidt/httprouter#features

Reference :

https://github.com/julienschmidt/httprouter

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  See also : Golang : Pat multiplexer routing example



Tags : golang http httprouter multiplexer

By Adam Ng

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