const?http?=?require('http')

const?url?=?require('url')

const?queryString?=?require('querystring')

//模擬數(shù)據(jù)庫(kù)

let?user?=?{

????admin:123456?//用戶和密碼

}

//搭建服務(wù)器

http.createServer((req,?res)=>{

????//獲取IP，get數(shù)據(jù)和post數(shù)據(jù)

????let?path,get,post

????//判斷前端發(fā)起的是哪一種請(qǐng)求方式。

????if(req.method?==?'GET'){

????????//拿到瀏覽器的完整請(qǐng)求路徑和攜帶的參數(shù)，然后結(jié)構(gòu)賦值

????????let?{pathName,?query}?=?url.parse(req.url,true)

????????//將值返回出去

????????path?=?pathName

????????get?=?query

????????

????????complete()

????}else?if(req.method?==?'POST'){

????????let?arr?=?[]

????????//分段監(jiān)聽(tīng)buffer流

????????req.on('data',?buffer?=>?{

????????????arr.push(buffer)

????????})

????????//監(jiān)聽(tīng)最后一段buffer流

????????req.on('data',?()?=>{

????????????//將二進(jìn)制的Buffer流數(shù)據(jù)轉(zhuǎn)換成json對(duì)象,然后返回出去

????????????post?=?queryString.parse(Buffer.concat(arr).toString())

????????})

????????complete()

????}

????????//定義調(diào)用接口的函數(shù)

????function?complete(){

????????//定義/login接口

????????if(path?==?'/login'){

????????????let?{username,?password}?=?get

????????????if(!user[username]){//如果數(shù)據(jù)庫(kù)中沒(méi)有該用戶

????????????????res.end(JSON.stringify({

????????????????????err:1,

????????????????????msg:'用戶名不存在'

????????????????})

????????????????)

????????????}else?if(user[username]?!=?password){//用戶名不匹配密碼

????????????????res.end(JSON.stringify({

????????????????????err:1,

????????????????????msg:'密碼錯(cuò)誤'

????????????????}))

????????????}else?{

????????????????res.end(JSON.stringify({

????????????????????err:0,

????????????????????msg:'登錄成功'

????????????????}))

????????????}

????????}else?if(path?==?'reg'){?//定義/reg接口

????????}else?{

????????}

????}

}).listen(8080)//監(jiān)聽(tīng)端口號(hào)