Golang Web 简单 Web 服务器项目实战教程

myweb/
├── main.go
├── handlers/
│   └── handlers.go
├── static/
│   ├── style.css
│   └── logo.png
└── templates/
    └── index.html

package handlers

import (
    "encoding/json"
    "net/http"
    "html/template"
)

// 首页处理器
func HomeHandler(w http.ResponseWriter, r *http.Request) {
    if r.URL.Path != "/" {
        http.NotFound(w, r)
        return
    }
    tmpl, err := template.ParseFiles("../templates/index.html")
    if err != nil {
        http.Error(w, err.Error(), http.StatusInternalServerError)
        return
    }
    tmpl.Execute(w, nil)
}

// API 接口：返回 JSON
func ApiHandler(w http.ResponseWriter, r *http.Request) {
    data := map[string]string{
        "message": "Hello from Go!",
        "status":  "success",
    }
    w.Header().Set("Content-Type", "application/json")
    json.NewEncoder(w).Encode(data)
}

package main

import (
    "log"
    "net/http"
    "myweb/handlers"
)

func main() {
    // 设置静态文件路由
    fs := http.FileServer(http.Dir("./static/"))
    http.Handle("/static/", http.StripPrefix("/static/", fs))

    // 设置页面和 API 路由
    http.HandleFunc("/", handlers.HomeHandler)
    http.HandleFunc("/api", handlers.ApiHandler)

       log.Println("服务器运行在 http://localhost:8080")
    log.Fatal(http.ListenAndServe(":8080", nil))
}
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