nodejs实现简单的文件服务器

const http = require('http')
const fs = require('fs')
const mime = require('mime')
const url = require('url')
const path = require('path')
const [hostname, port] = ['127.0.0.1', 3000]
const server = http.createServer((req, res)=>{
    let pathname = decodeURIComponent(path.join(__dirname,url.parse(req.url).pathname))
    if(fs.statSync(pathname).isDirectory()){
        res.writeHead(200,{'Content-Type':'text/html;charset=utf-8'})
        fs.readdir(pathname,(err,files)=>{
            res.write('<ul>')
            files.forEach(element => {
                let link = path.join(url.parse(req.url).pathname,element)
                res.write(`<li><a href = "${link}">${element}</a></li>`)
            });
            res.end('<ul>')
        })
    }
    else{
        fs.readFile(pathname, 'binary', (err, data)=>{
            if(err){
                res.writeHead(500,{'Content-Type':'text/plain'})
                res.end(JSON.stringify(err))
                return false
            }
            res.writeHead(200,{'Content-Type':`${mime.lookup(pathname)};charset:utf-8`})
            res.write(data,'binary')
            res.end()
        })
    }
    res.statusCode = 200
})
server.listen(port, hostname,()=>{
    console.log(`服务器运行在 http://${hostname}:${port}`)
})

const http = require('http')

const fs = require('fs')

const mime = require('mime')

const url = require('url')

const path = require('path')

const [hostname, port] = ['127.0.0.1', 3000]

const server = http.createServer((req, res)=>{

let pathname = decodeURIComponent(path.join(__dirname,url.parse(req.url).pathname))

if(fs.statSync(pathname).isDirectory()){

res.writeHead(200,{'Content-Type':'text/html;charset=utf-8'})

fs.readdir(pathname,(err,files)=>{

res.write('<ul>')

files.forEach(element => {

let link = path.join(url.parse(req.url).pathname,element)

res.write(`<li><a href = "${link}">${element}</a></li>`)

});

res.end('<ul>')

})

}

else{

fs.readFile(pathname, 'binary', (err, data)=>{

if(err){

res.writeHead(500,{'Content-Type':'text/plain'})

res.end(JSON.stringify(err))

return false

}

res.writeHead(200,{'Content-Type':`${mime.lookup(pathname)};charset:utf-8`})

res.write(data,'binary')

res.end()

})

}

res.statusCode = 200

})

server.listen(port, hostname,()=>{

console.log(`服务器运行在 http://${hostname}:${port}`)

})