在Go语言中如何解决并发网络请求的请求认证和授权处理问题？

package main

import (
    "fmt"
    "net/http"
)

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

func authMiddleware(next http.HandlerFunc) http.HandlerFunc {
    return func(w http.ResponseWriter, r *http.Request) {
        // 在认证中添加具体的认证逻辑
        valid := true // 暂时假设认证通过
        if !valid {
            w.WriteHeader(http.StatusUnauthorized)
            return
        }
        next.ServeHTTP(w, r)
    }
}

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

package main

import (
    "fmt"
    "net/http"
)

type role int

const (
    Admin  role = iota // 管理员角色
    Editor             // 编辑角色
)

func main() {
    http.HandleFunc("/edit", authorizeMiddleware([]role{Admin, Editor}, editHandler))
    http.ListenAndServe(":8080", nil)
}

func authorizeMiddleware(roles []role, next http.HandlerFunc) http.HandlerFunc {
    return func(w http.ResponseWriter, r *http.Request) {
        // 在授权中添加具体的授权逻辑
        userRole := role(0) // 假设当前用户为管理员
        authorized := false
        for _, r := range roles {
            if r == userRole {
                authorized = true
                break
            }
        }
        if !authorized {
            w.WriteHeader(http.StatusForbidden)
            return
        }
        next.ServeHTTP(w, r)
    }
}

func editHandler(w http.ResponseWriter, r *http.Request) {
    fmt.Fprintf(w, "Edit page")
}