node中通過模板引擎模擬Apache訪問目錄結構的功能
阿新 • • 發佈:2018-12-09
要點:
1.頁面的渲染方式分為客戶端渲染和伺服器渲染兩種方式,這個例項中實現的就是服務端的渲染。
2.在fs核心模組中,fs.readFile()方法使用相對路徑,是從啟動伺服器的目錄下出發使用"./"是為了區別核心模組。
3.通過node引入npm中新增的包,可以直接通過require('包名'),來引入這個例子中的包名
template.rander(資料,{鍵值對})來完成模板引擎中的 {{}} 中變數的替換,資料注意要通過.toString()方法,將二進位制的資料轉換為字串的型別
同時,需要遍歷替換的話通過{{ each 變數名 }} {{ $value }} {{/each}}遍歷替換,{{$value}}前後是不變的字串,{{$value}}是變化的值。
node執行的js檔案
var http = require('http'); var fs = require('fs'); var template = require('art-template'); // 引入art-template模板引擎,引入的名稱是npm安裝的包名 var server = http.createServer(); var wwwDir = 'F:/www'; // 設定預設的本機地址訪問的資料夾 server.on('request',function(req,res){ fs.readFile('./06.模板html.html',function(err,data){ // fs.readFile()方法,讀取相對路徑下的檔案 if(err){ return res.end('404'); } //找到上面設定的檔案下對應的檔案,如果找不到對應的檔案報錯 fs.readdir(wwwDir,function(err,files){ /*如果正確讀取到檔案之後,再讀取指定路徑下的資料夾目錄*/ if(err){ return res.end('cannot read dir'); } data = template.render(data.toString(),{ title:'陳小帥是真的帥', dir:files }) // 通過替換{{}}中的內容,完成替換對應的檔名,:前面是{{}}中的名字,後面是替換值 res.end(data); }) }) }) server.listen(3000,function(){ console.log('success') })
模板html檔案
<html dir="ltr" lang="zh" i18n-processed=""> <head> <meta charset="utf-8"> <meta name="google" value="notranslate"> <style> h1 { border-bottom: 1px solid #c0c0c0; margin-bottom: 10px; padding-bottom: 10px; white-space: nowrap; } table { border-collapse: collapse; } th { cursor: pointer; } td.detailsColumn { -webkit-padding-start: 2em; text-align: end; white-space: nowrap; } a.icon { -webkit-padding-start: 1.5em; text-decoration: none; } a.icon:hover { text-decoration: underline; } a.file { background: url("data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAAQCAIAAACQkWg2AAAABnRSTlMAAAAAAABupgeRAAABHUlEQVR42o2RMW7DIBiF3498iHRJD5JKHurL+CRVBp+i2T16tTynF2gO0KSb5ZrBBl4HHDBuK/WXACH4eO9/CAAAbdvijzLGNE1TVZXfZuHg6XCAQESAZXbOKaXO57eiKG6ft9PrKQIkCQqFoIiQFBGlFIB5nvM8t9aOX2Nd18oDzjnPgCDpn/BH4zh2XZdlWVmWiUK4IgCBoFMUz9eP6zRN75cLgEQhcmTQIbl72O0f9865qLAAsURAAgKBJKEtgLXWvyjLuFsThCSstb8rBCaAQhDYWgIZ7myM+TUBjDHrHlZcbMYYk34cN0YSLcgS+wL0fe9TXDMbY33fR2AYBvyQ8L0Gk8MwREBrTfKe4TpTzwhArXWi8HI84h/1DfwI5mhxJamFAAAAAElFTkSuQmCC ") left top no-repeat; } a.dir { background: url("data:image/png;base64,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 ") left top no-repeat; } a.up { background: url("data:image/png;base64,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 ") left top no-repeat; } </style> <title id="title">{{ title }}</title> <!-- 將網頁名用{{}}佔位 --> </head> <body> <h1 id="header">F:\www\ 的索引</h1> </div> <table> <thead> <tr class="header" id="theader"> <th onclick="javascript:sortTable(0);">名稱</th> <th class="detailsColumn" onclick="javascript:sortTable(1);"> 大小 </th> <th class="detailsColumn" onclick="javascript:sortTable(2);"> 修改日期 </th> </tr> </thead> <tbody id="tbody"> {{each dir}} <tr> <td><a class="icon dir" href="">{{$value}}/</a></td> <td class="detailsColumn"></td> <td class="detailsColumn">2018/12/1 13:53</td> <!-- class就是在這裡就是為了新增樣式,href=""是否新增會有顏色的改變 --> </tr> {{/each}} </tbody> </table> </body> </html>
結果: