Golang入门：手把手搭建Web服务器

package main

import (
    "fmt"
    "net/http"
)

func helloHandler(w http.ResponseWriter, r *http.Request) {
    fmt.Fprintf(w, "Hello from Go Web Server!")
}

func main() {
    http.HandleFunc("/", helloHandler)
    fmt.Println("Server is running on http://localhost:8080")
    http.ListenAndServe(":8080", nil)
}

func aboutHandler(w http.ResponseWriter, r *http.Request) {
    fmt.Fprintf(w, "This is the about page.")
}

func main() {
    http.HandleFunc("/", helloHandler)
    http.HandleFunc("/about", aboutHandler)
    http.HandleFunc("/user", userHandler)
    fmt.Println("Server is running on http://localhost:8080")
    http.ListenAndServe(":8080", nil)
}

func userHandler(w http.ResponseWriter, r *http.Request) {
    if r.Method == "GET" {
        fmt.Fprintf(w, `
            <form method="POST">
                &lt;input type=&quot;text&quot; name=&quot;name&quot; placeholder=&quot;Enter your name&quot;&gt;
                <button type="submit">Submit</button>
            </form>
        `)
    } else if r.Method == "POST" {
        r.ParseForm()
        name := r.Form.Get("name")
        fmt.Fprintf(w, "Hello, %s!", name)
    }
}

func main() {
    http.HandleFunc("/", helloHandler)
    http.HandleFunc("/about", aboutHandler)
    
    // 提供static目录下的静态文件
    fs := http.FileServer(http.Dir("./static/"))
    http.Handle("/static/", http.StripPrefix("/static/", fs))

    fmt.Println("Server is running on http://localhost:8080")
    http.ListenAndServe(":8080", nil)
}