02_Go-1_02简单实现用户登录API

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main.go

package main

import (
    "net/http"

    "github.com/julienschmidt/httprouter"
)

func RegisterHandlers() *httprouter.Router {
    // *Router路由指针
    router := httprouter.New()

    // 使用POST方法注册一个适配/user路径的CreateUser函数
    router.POST("/user", CreateUser)

    // 用户登录
    router.POST("/user/:user_name", Login)

    // *Router作为参数传给ListenAndServe函数启动HTTP服务
    return router
}

func main() {
    r := RegisterHandlers()
    http.ListenAndServe(":8000", r)
}

handlers.go

package main

import (
    "io"
    "net/http"

    "github.com/julienschmidt/httprouter"
)

// 创建用户
func CreateUser(w http.ResponseWriter, r *http.Request, p httprouter.Params) {
    io.WriteString(w, "Create User Handler")
}

// 用户登录
func Login(w http.ResponseWriter, r *http.Request, p httprouter.Params) {
    // 通过这种方式获取参数
    uname := p.ByName("user_name")
    io.WriteString(w, uname)
}