Node.js通过URL读取本地文件实现

let fs = require("fs");
let path = require("path");
let http = require("http");

let server = http.createServer();
 
server.on("request",function (req,res) {
 
});
server.listen(3000);

function readFile(req, res ,address) {
 let str = path.join(__dirname,"www", address);
 fs.readFile(str, "utf-8" , function (err,data) {
 if (err){
  throw new Error("读取失败");
 }
 res.end(data);
 })
}

if (req.url ==="/"){
 readFile(req,res,"node.html");
 }
 else if (req.url ==="/banner") {
 readFile(req,res,"banner.json");
 }
 else {
 res.end("no anything");
 }

/*01.js*/
let fs = require("fs");
let path = require("path");
let http = require("http");
 
let server = http.createServer();
 
//开启http服务
server.on("request",function (req,res) {
 // 路径判断
 if (req.url ==="/"){
 readFile(req,res,"node.html");
 }
 else if (req.url ==="/banner") {
 readFile(req,res,"banner.json");
 }
 else if(req.url ==="/node"){
 readFile(req,res,"node.html");
 }
 else {
 res.end("no anything");
 }
});
//监听3000端口
server.listen(3000,);
 
//封装文件
function readFile(req, res ,address) {
 let str = path.join(__dirname,"www", address);
 fs.readFile(str, "utf-8" , function (err,data) {
 if (err){
  throw new Error("读取失败");
 }
 res.end(data);
 })
}