Golang技术在移动开发中的优势与局限

package main

import (
    "context"
    "encoding/json"
    "fmt"
    "log"
    "net/http"
    "os"

    "github.com/gorilla/mux"
)

func main() {
    r := mux.NewRouter()
    r.HandleFunc("/", handleHome)
    r.HandleFunc("/items", handleItems)
    r.HandleFunc("/items/{id}", handleItem)

    port := os.Getenv("PORT")
    if port == "" {
        port = "8080"
    }

    log.Fatal(http.ListenAndServe(fmt.Sprintf(":%s", port), r))
}

func handleHome(w http.ResponseWriter, r *http.Request) {
    fmt.Fprintf(w, "Hello from Golang!")
}

func handleItems(w http.ResponseWriter, r *http.Request) {
    switch r.Method {
    case http.MethodGet:
        handleGetItems(w, r)
    case http.MethodPost:
        handleCreateItem(w, r)
    default:
        http.Error(w, "Method not allowed", http.StatusMethodNotAllowed)
    }
}

func handleItem(w http.ResponseWriter, r *http.Request) {
    switch r.Method {
    case http.MethodGet:
        handleGetItem(w, r)
    case http.MethodPut:
        handleUpdateItem(w, r)
    case http.MethodDelete:
        handleDeleteItem(w, r)
    default:
        http.Error(w, "Method not allowed", http.StatusMethodNotAllowed)
    }
}