web服务器4

const http = require('http')
const server = http.createServer()
server.on('request',(req,res)=>{
    let content = '<h1>404 Not found!</h1>'
    const url = req.url
    const method = req.method
    if(url === '/' || url ==='/index.html'){
        content = '<h1>首页</h1>'
    }else if(url === '/about.html'){
        content = '<h1>关于页面</h1>'
    }
    // res.setHeader()设置响应头，解决中文乱码问题
    res.setHeader('Content-Type','text/html;charset=utf-8')
    // 调用res.end方法,向客户端响应内容   向客户端发生指定内容，并结束这次请求
    res.end(content)
})
server.listen(80,()=>{
    console.log('server running at http://127.0.0.1')
})