织梦网站手机页怎么做百度知道网页入口

实现
多个同学的作业部署
访问 /A 返回A的网页
访问 /B 返回B的网页

思路 根据 发送请求的路径 判断应该读区哪个文件夹中的哪个文件

例如
hongbin.xyz:3002/abc
应当返回 /zbc/index.html文件

html文件引入的index.css
请求的路径是hongbin.xyz:3000/index.css没办法确定css文件所属目录
应当返回 /zbc/index.css
问题： req.url是index.css怎么确定是/abc目录下的index.css文件
解决： req.headers.referer 是发起请求的地址 为hongbin.xyz:3002/abc
通过referer判断是哪个文件目录下的文件

css中的 background:url(./images/1.png)
应当返回 /zbc/images/1.png
但是发起请求的是index.css文件 referer为hongbin.xyz:3002/index.css
解决部署前换成 绝对地址 background:url(abc/images/1.png)
直接返回 abc/images/1.png

代码：

const express = require("express");
const fs = require("fs");
const http = require("http");
const app = express();
const path = require('path');const port = process.env.PORT || 3000;app.all("*", function (req, res, next) {res.header("Access-Control-Allow-Origin", "*");res.header("Access-Control-Allow-Headers", "content-type,Authorization");res.header("Access-Control-Allow-Methods", "DELETE,PUT,POST,GET,OPTIONS");if (req.method.toLowerCase() == "options") res.status(200).send();else next();
});const httpServer = http.createServer(app);httpServer.listen(port, () => { console.log("> dev mode on http " + port) });/**
* 包含的文件夹
* 只有请求路径在文件夹内才会返回文件
*/
let fileNames = fs.readdirSync('../source');app.get('/updateFileDir', (req, res) => {fileNames = fs.readdirSync('../source');return res.json({ message: '更新成功', fileNames });
})app.get("/*", (req, res, next) => {let pathName = req.url;pathName = pathName.substring(0, pathName.indexOf('?') === -1 ? pathName.length : pathName.indexOf('?'));const dirName = pathName.substring(1);console.log(pathName);let referer = req.headers?.referer ?? "";referer = referer.substring(0, referer.indexOf('?') === -1 ? referer.length : referer.indexOf('?'));const reqSource = referer.replace('http://' + req.headers.host, '');if (fileNames.includes(dirName)) {req.fileName = dirName;pathName += "/index.html";} else if (fileNames.includes(reqSource?.substring(1))) {pathName = `${reqSource}${pathName}`;} else {//处理background：url(./asset/*/xxxx.png) => /assets/*/xxxx.png//提交代码时需要转化成绝对地址 /4-11/assets/*/xxxx.pngif (pathName.split('/')[1] && fileNames.includes(pathName.split('/')[1])) {console.log("绝对路径:", pathName);} else return res.status(404).json("未找到资源");}console.log(pathName);const extName = path.extname(pathName);fs.readFile(`../source${pathName}`, function (err, data) {if (err) {console.error(err);res.status(400).json(err);} else {const ext = getExt(extName);res.writeHead(200, { "Content-Type": ext + "; charset=utf-8" });res.write(data);}res.end();});
});const EXT = {".html": "text/html",".css": "text/css",".js": "text/js",".ico": "image/x-icon",".png": "image/png",".svg": "image/svg",
};
// 获取后缀名
getExt = extName => {return EXT[extName];
};