1,http创建基本的web服务器

const http = require('http')

// 创建web服务器实例
const server = http.createServer()

// 为服务器实例绑定request事件，监听客户端的请求
server.on('request',function(req,res){
  const url = req.url
  const method = req.method
  const str = `You request url is ${url},and request method is ${method}`
  console.log(str);

  // 设置Content-Type响应头，解决中文乱码的问题
  res.setHeader('Content-Type','text/html;charset=utf-8')
  // 向客户端响应内容
  res.end(str)
})

server.listen(8080,function(){
  console.log('server running at http://127.0.0.1:8080');
})

const http = require('http')

const server = http.createServer()

server.on('request',(req,res)=>{
  // req.url是客户端请求的url地址
  const url = req.url
 
  let content = '404 not fonnd!'
  if(url === '/' || url === '/index.html'){
    content = '<h2>首页</h2>'
  }else if(url === '/about.html'){
    content = '<h2>关于我们</h2>'
  }
  // 防止中文乱码
  res.setHeader('Content-Type','text/html; charset=utf-8')
  // 调用res.end()方法，向客户端响应一些内容
  res.end(content)
})

server.listen(8080,()=>{
  console.log('http server running at http://127.0.0.1:8080');
})