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短视频系统源码，启动一个node后台服务 - 云豹科技

news 2026/5/11 23:19:05

短视频系统源码，启动一个node后台服务

使用koa创建的方式

入口index.html

<!DOCTYPE html>
<html lang="en">
<head><meta charset="UTF-8"><meta name="viewport" content="width=device-width, initial-scale=1.0"><title>Document</title>
</head>
<body><!-- form的请求 --><form action="/add" method="POST"><input type="text" name="key1"><input type="submit" value="Add"></form><script src="https://cdn.bootcdn.net/ajax/libs/axios/0.21.0/axios.js"></script><script>// axios的请求(async () => {const res2 = await axios.post('/api/users', {key: 'value',});document.writeln(`RES : ${JSON.stringify(res2.data)}`)})()</script>
</body>
</html>

index.js

const Koa = require('koa');
const app = new Koa();
const router = require('koa-router')();const bodyParser = require('koa-bodyparser');     // 用于处理form表达提交的数据格式
app.use(require('koa-static')(__dirname + '/'));  // 引入index.html文件
app.use(bodyParser());router.post('/add', async (ctx, next) => {console.log('body', ctx.request.body)ctx.body='这是post请求';
})
router.get('/add', async (ctx, next) => {console.log('body', ctx.request.body)
})
router.post('/api/users', async (ctx, next) => {console.log('body', ctx.request.body)
})app.use(router.routes())
app.listen(3000)

使用http的方式，创建包含跨域的请求（正向代理、反向代理）

index.html

<!DOCTYPE html>
<html lang="en">
<head><meta charset="UTF-8"><meta name="viewport" content="width=device-width, initial-scale=1.0"><title>Document</title>
</head>
<body><script src="https://cdn.bootcdn.net/ajax/libs/axios/0.21.0/axios.js"></script><script>(async () => {// 跨域请求，客户端正向代理方式（反向代理则不需要这些配置）axios.defaults.baseURL = 'http://localhost:4000';axios.defaults.withCredentials = trueconst res2 = await axios.post('/api/users', {key: 'value',});document.writeln(`RES : ${JSON.stringify(res2.data)}`)})()</script>
</body>
</html>

index.js

const api = require('./api');
const proxy = require('./proxy');
api.listen(4000);
proxy.listen(3000);

proxy.js

const express = require('express');
const app = express();
app.use(express.static(__dirname + '/'));// 跨域请求，服务端反向代理方式（正向代理则不需要这些配置）
const {createProxyMiddleware} = require('http-proxy-middleware');  // 代理插件
app.use('/api', createProxyMiddleware({target: 'http://localhost:4000',changeOrigin: false,
}))module.exports = app;

api.js

const http = require('http');
const fs = require('fs');
const app = http.createServer((req, res) => {const {url, method, headers} = req;// 返回index.htmlif (url === '/' && method === 'GET') {fs.readFile('index.html', (err, data) => {if (err) {res.writeHead(500, {'Content-Type': 'text/plain'});res.end('服务器错误')}res.writeHead(200, {'Content-Type': 'text/html'})res.end(data)})// 处理/api/users} else if ((method === 'GET' || method === 'POST') && url === '/api/users') {// 正向代理需要的配置（反向代理则不需要这些配置）res.setHeader('Access-Control-Allow-Origin', 'http://localhost:3000')res.setHeader('Access-Control-Allow-Credentials', 'true')res.setHeader('Content-Type', 'application/json');res.setHeader('Set-Cookie', 'cookie=val12123')res.end(JSON.stringify([{name: 'tom'}]))} else if (method === 'OPTIONS' && url === '/api/users') {// 正向代理需要的配置（反向代理则不需要这些配置）res.setHeader('Access-Control-Allow-Credentials', 'true')res.writeHead(200, {'Access-Control-Allow-Origin' : 'http://localhost:3000','Access-Control-Allow-Headers' : 'X-Token,Content-Type','Access-Control-Allow-Methods' : 'PUT',})res.end()}
})
module.exports = app;