web服务器4

//http：

// 1，导入http模块

const http = require('http')

// 2，创建web实例

const server = http.createServer()

// 3，为服务器绑定require事件

server.on('request',function(req,res){

    console.log('Someone visit our web server.')

})

//4， 启动服务器

server.listen(8080,function(){

    console.log('server running at http://127.0.0.1:8080' )

})

//req

const http = require('http')

const server = http.createServer()

// req是请求对象，包含了与客户端相关的数据和属性

server.on('request',(req)=>{

    // req.url 是客户端请求的url地址

    const url = req.url

    // req.method是客户端请求的method类型

    const method = req.method

    const str = `you request url is ${url},and request method is${method}`

    console.log(str)

})

server.listen(8080,()=>{

    console.log('server running at http://127.0.0.1' )

})

//完整版创建
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')
})