Golang如何实现简单的HTTP服务器 手把手教你使用net/http包

http.HandleFunc

http.ListenAndServe

package main

import (
    "fmt"
    "net/http"
)

func hello(w http.ResponseWriter, r *http.Request) {
    fmt.Fprintf(w, "Hello, World!")
}

func main() {
    http.HandleFunc("/", hello)
    http.ListenAndServe(":8080", nil)
}

http://localhost:8080

/

/about

/api/data

http.HandleFunc

http.HandleFunc("/about", func(w http.ResponseWriter, r *http.Request) {
    fmt.Fprintf(w, "About page")
})

http.HandleFunc("/api/data", func(w http.ResponseWriter, r *http.Request) {
    fmt.Fprintf(w, `{"message": "some data"}`)
})

http.FileServer

static

http.Handle("/static/", http.StripPrefix("/static/", http.FileServer(http.Dir("static"))))

/static/index.html

static/index.html

StripPrefix

http.HandleFunc

func loggingMiddleware(next http.HandlerFunc) http.HandlerFunc {
    return func(w http.ResponseWriter, r *http.Request) {
        fmt.Println("Received request:", r.URL.Path)
        next(w, r)
    }
}

http.HandleFunc("/", loggingMiddleware(hello))