text: var http = require('http')
  var fs = require('fs')
  var url = require('url')
  var port = process.argv[2]
  
  if (!port) {
    console.log('请指定端口号好不啦？\nnode server.js 8888 这样不会吗？')
    process.exit(1)
  }
  
  var server = http.createServer(function (request, response) {
    var parsedUrl = url.parse(request.url, true)
    var pathWithQuery = request.url
    var queryString = ''
    if (pathWithQuery.indexOf('?') >= 0) {
      queryString = pathWithQuery.substring(pathWithQuery.indexOf('?'))
    }
    var path = parsedUrl.pathname
    var query = parsedUrl.query
    var method = request.method
  
    /******** 从这里开始看，上面不要看 ************/
  
    console.log('有个傻子发请求过来啦！路径（带查询参数）为：' + pathWithQuery)
  
    if (path === '/index.html') {
      response.statusCode = 200
      response.setHeader('Content-Type', 'text/html;charset=utf-8')
      let string = fs.readFileSync('public/index.html').toString()
      const page1 = fs.readFileSync('db/page1.json').toString()
      const array = JSON.parse(page1)
      const result = array.map(item => `<li>${item.id}</li>`).join('')
      string = string.replace('{{page1}}', `<ul id="xxx">${result}</ul>`)
      response.write(string)
      response.end()
    } else if (path === '/main.js') {
      response.statusCode = 200
      response.setHeader('Content-Type', 'text/javascript;charset=utf-8')
      response.write(fs.readFileSync('public/main.js'))
      response.end()
    } else if (path === '/style.css' || path === '/2.css') {
      response.statusCode = 200
      response.setHeader('Content-Type', 'text/css;charset=utf-8')
      response.write(fs.readFileSync('public/style.css'))
      response.end()
    } else if (path === '/2.js') {
      response.statusCode = 200
      response.setHeader('Content-Type', 'text/javascript;charset=utf-8')
      response.write(fs.readFileSync('public/2.js'))
      response.end()
    } else if (path === '/3.html') {
      response.statusCode = 200
      response.setHeader('Content-Type', 'text/html;charset=utf-8')
      response.write(fs.readFileSync('public/3.html'))
      response.end()
    } else if (path === '/4.xml') {
      response.statusCode = 200
      response.setHeader('Content-Type', 'text/xml;charset=utf-8')
      response.write(fs.readFileSync('public/4.xml'))
      response.end()
    } else if (path === '/5.json') {
      response.statusCode = 200
      response.setHeader('Content-Type', 'text/json;charset=utf-8')
      response.write(fs.readFileSync('public/5.json'))
      response.end()
    } else if (path === '/page2') {
      response.statusCode = 200
      response.setHeader('Content-Type', 'text/json;charset=utf-8')
      response.write(fs.readFileSync('db/page2.json'))
      response.end()
    } else if (path === '/page3') {
      response.statusCode = 200
      response.setHeader('Content-Type', 'text/json;charset=utf-8')
      response.write(fs.readFileSync('db/page3.json'))
      response.end()
    } else {
      response.statusCode = 404
      response.setHeader('Content-Type', 'text/html;charset=utf-8')
      response.write(`你输入的路径不存在对应的内容`)
      response.end()
    }
  
    /******** 代码结束，下面不要看 ************/
  })
  
  server.listen(port)
  console.log(
    '监听 ' +
      port +
      ' 成功\n请用在空中转体720度然后用电饭煲打开 http://localhost:' +
      port
  )
  