nodejs静态资源服务器
1. touch 一般是在创建一个空的日志文件的时候才会使用
2. xshell 使用open命令来打开一个文件
3. http是nodejs的服务模块
4. url是url路由模块
5. fs是文件服务器模块
nodejs实例
打开xshell 打开ubuntu 用xshell链接ubuntu
1. nodejs服务器的创建：
const http=require('http');
const ip = '本机IP地址';
const port = 3000;
http.createServer((req,res)=>{
res.writeHead(200,{'Content-type':'text/html'});
res.write('hello');
res.end();
}).listen(port,ip,()=>{
console.log('server start');
});
//主机IP
const ip = '192.168.0.110';
//端口号
const port = 3000;
//引入的组建模块 http、url、fs
const http = require('http');
const url = require('url');
const fs = require('fs');
//创建一个服务
var server = http.createServer(function(req,res){
res.writeHead(200,{'Content-Type':'text/plain'});
res.write('my nodejs');
res.end();
});
//监听一个端口
server.listen(port,ip,function(){
console.log('server start');
});
//封装成函数调用实例
const http=require('http');
const ip = '本机IP地址';
const port = 3000;
var f = function(req,res){
res.writeHead(200,{'Content-type':'text/html'});
res.write('hello');
res.end();
}
http.createServer(f).listen(port,ip,()=>{
console.log('server start');
});
2. 抽象方法及获取URL部分块的内容 url
const ip = '192.168.0.110';//主机IP
const port = 3000;//端口号
//引入的组建模块 http、url、fs
const http = require('http');
const url = require('url');
const fs = require('fs');
//创建服务的回掉函数
var funSer = function(req,res){
//获取url地址块的内容 如：/path/show
var parth = url.parse(req.url).pathname;
res.write(parth);
res.end();
}
//监听端口的回掉
var fun = function(){
console.log('server start');
}
var server = http.createServer(funSer).listen(port,ip,fun);
const http=require('http');
const url = require('url');
const ip = '本机IP地址';
const port = 3000;
var f = function(req,res){
var pathname = url.parse(req.url).pathname;
res.write(pathname);
res.end();
}
var f2 = function(){
console.log('server start');
}
http.createServer(f).listen(port,ip,f2);
3. 读取文件的内容 File System
const http=require('http');
const fs = require('fs');
const url = require('url');
const ip = '本机IP地址';
const port = 3000;
var pathname = url.parse(req.url).pathname;
var userurl = url.parse(pathname);
switch(userurl){
case '' || '/':
fs.readFile('./index.html',func(err,content){
if(err){
console.log(err);
}
else{
res.writeHead(200,{'Content-type':'text/html'});
}
});
}
const ip = '192.168.0.110';//主机IP
const port = 3000;//端口号
//引入的组建模块 http、url、fs
const http = require('http');
const url = require('url');
const fs = require('fs');
//真正打印文件内容
fs.readFile('./index.html', (err, data) => {
if (err) throw err;
//打印字符串内容
console.log(data.toString());
});
//创建服务的回掉函数
var funSer = function(req,res){
//获取url地址块的内容 如：/path/show
var parth = url.parse(req.url).pathname;
res.write(parth);
res.end();
}
//监听端口的回掉
var fun = function(){
console.log('server start');
}
var server = http.createServer(funSer).listen(port,ip,fun);
4. 读取文件的内容并在浏览器中输出 File System
const ip = '192.168.0.110';//主机IP
const port = 3000;//端口号
//引入的组建模块 http、url、fs
const http = require('http');
const url = require('url');
const fs = require('fs');
//读取文件内容
var data = fs.readFileSync('./index.html');
//创建服务的回掉函数
var funSer = function(req , res){
//获取url地址块的内容 如：/path/show
var path = urls.parse( req.url ).pathname;
res.write( data.toString() );
res.write( path );
res.end();
}
//监听端口的回掉
var fun = function(){
console.log('server start');
}
var server = http.createServer(funSer).listen(port,ip,fun);
5. 完整实例（根据不同的url地址请求不同的文件【模板】）
const ip = '192.168.0.110';//主机IP
const port = 3000;//端口号
//引入的组建模块 http、url、fs
const http = require('http');
const url = require('url');
const fs = require('fs');
//实例化一个服务容器
var server = new http.Server();
//监听一个端口
server.listen(port , ip);
//注册一个事件处理的on方法
server.on('request' , function(request , response){
//解析请求的url
var url = urlapi.parse(request.url);
//监听请求的网站，以当前脚本目录为根目录的url地址
console.log(url.pathname);
//特殊URL会让服务器在发送响应前先等待
//根据path路径来读取不同的模板文件
switch( url.pathname ){ //判断请求的路径信息
case '' || '/': //处理请求网站根目录，指定加载对应的文件夹，一般以根目录的index.html为默认，nodejs是高效流处理的方案，也可以通过配置文件来设置
//读取文件内容（打开请求的文件）
fs.readFile('./index.html',function( error, content){
if(error){//如果有错误时，显示错误信息
res.writeHead(400,{'Content-Type':'text/plain;charset="utf-8"'});
res.write(error.message);
res.end();
}else{
//正确时浏览器输出模板文件的内容
res.writeHead(200,{'Content-Type':'text/html;charset="utf-8"'});//告诉相应的请求头信息，返回数据
res.write(content);//模板文件内容
res.end();
}
});
break;
case '/list':
fs.readFile('./list.html',function( error, content){
if(error){
res.writeHead(400,{'Content-Type':'text/plain;charset="utf-8"'});
res.write(error.message);
res.end();
}else{
res.writeHead(200,{'Content-Type':'text/html;charset="utf-8"'});
res.write(content);
res.end();
}
});
break;
case '/show':
fs.readFile('./show.html',function( error, content){
if(error){
res.writeHead(400,{'Content-Type':'text/plain;charset="utf-8"'});
res.write(error.message);
res.end();
}else{
res.writeHead(200,{'Content-Type':'text/html;charset="utf-8"'});
res.write(content);
res.end();
}
});
break;
default:
fs.readFile('./default.html',function( error, content){
if(error){
res.writeHead(400,{'Content-Type':'text/plain;charset="utf-8"'});
res.write(error.message);
res.end();
}else{
res.writeHead(200,{'Content-Type':'text/html;charset="utf-8"'});
res.write(content);
res.end();
}
});
break;
}
});
练习：http 文件(每次都需要重启服务器)
const http=require('http');
const ip = '本机IP地址';
const port = 3000;
http.createServer((req,res)=>{
res.writeHead(200,{'Content-type':'text/html'});
res.write('hello');
res.end();
}).listen(port,ip,()=>{
console.log('server start');
});
const http=require('http');
const ip = '本机IP地址';
const port = 3000;
var f = function(req,res){
res.writeHead(200,{'Content-type':'text/html'});
res.write('hello');
res.end();
}
http.createServer(f).listen(port,ip,()=>{
console.log('server start');
});
const http=require('http');
const ip = '本机IP地址';
const port = 3000;
var f = function(req,res){
res.writeHead(200,{'Content-type':'text/html'});
res.write('hello');
res.end();
}
var f2 = function(){
console.log('server start');
}
http.createServer(f).listen(port,ip,f2);
const http=require('http');
const url = require('url');
const ip = '本机IP地址';
const port = 3000;
var f = function(req,res){
var pathname = url.parse(req.url).pathname;
res.write(pathname);
res.end();
}
var f2 = function(){
console.log('server start');
}
http.createServer(f).listen(port,ip,f2);
const http=require('http');
const fs = require('fs');
const url = require('url');
const ip = '本机IP地址';
const port = 3000;
var data = fs.readFileSync('xiaoniu.txt');
var f = function(req,res){
var pathname = url.parse(req.url).pathname;
res.write(pathname);
res.end();
}
var f2 = function(){
console.log('server start');
}
http.createServer(f).listen(port,ip,f2);
const http=require('http');
const fs = require('fs');
const url = require('url');
const ip = '本机IP地址';
const port = 3000;
var pathname = url.parse(req.url).pathname;
var userurl = url.parse(pathname);
switch(userurl){
case '' || '/':
fs.readFile('./index.html',func(err,content){
if(err){
console.log(err);
}
else{
res.writeHead(200,{'Content-type':'text/html'});
}
});
}