本文实例为大家分享了node.js通过url读取文件的具体代码，供大家参考，具体内容如下在浏览器地址栏中输入127.0.0.1:3000和127.0.0.1:3000/node时，读取node.html文件，输入127.0.0.1:3000/banner时读取banner.json文件准备工作准备工作首先我们在www的文件目录下新建两个文件，一个是node.htnl，一个是banner.json，并在文件中添加一点内容1、新建01.js文件并导入模块
let fs = require("fs");
let path = require("path");
let http = require("http");
let fs = require("fs");
let path = require("path");
let http = require("http");2、开启http服务
let server = http.createServer();

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

});
server.listen(3000);
let server = http.createServer();

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

});
server.listen(3000);3、读取文件路径
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);
})
}
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);
})
}4、url地址拼接和判断
if (req.url ==="/"){
readFile(req,res,"node.html");
}
else if (req.url ==="/banner") {
readFile(req,res,"banner.json");
}
else {
res.end("no anything");
}
if (req.url ==="/"){
readFile(req,res,"node.html");
}
else if (req.url ==="/banner") {
readFile(req,res,"banner.json");
}
else {
res.end("no anything");
}5、完整代码一下代码全部在01.js文件里面(js文件不一定要在根目录)
/*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);
})
}
/*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);
})
}6、输入地址读取文件127.0.0.1:3000127.0.0.1:3000/node127.0.0.1:3000/banner以上就是本文的全部内容，希望对大家的学习有所帮助。