This commit is contained in:
张成
2026-03-13 15:32:28 +08:00
parent 8a953eb769
commit 2c021c24ef
3 changed files with 122 additions and 1 deletions

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const fs = require('fs');
const path = require('path');
const axios = require('axios');
/**
* 静态 JS 代理/缓存
*
* 规则:
* - 前端请求GET /static/bossheader 里带 path例如
* path: https://static.zhipin.com/fe-zhipin-geek/web/chat-new/v5410/static/js/app.4e199352.js
* - 从 URL 中取 pathname/fe-zhipin-geek/web/chat-new/v5410/static/js/app.4e199352.js
* - 去掉开头的 /,中间的 / 全部替换为 _得到本地文件名
* fe-zhipin-geek_web-chat-new_v5410_static_js_app.4e199352.js
* - 在项目根目录下的 js 目录保存/读取该文件:./js/<文件名>
* - 如果已存在:直接返回本地文件
* - 如果不存在:从远程 URL 下载,保存后返回
*/
module.exports = {
'GET /static/boss': async (ctx) => {
// 1. 获取原始 URL优先从 header兼容 query/body
const urlStr =
ctx.get('path') ||
ctx.query.path ||
(ctx.request.body && ctx.request.body.path);
if (!urlStr) {
ctx.status = 400;
ctx.body = { code: 400, message: '缺少 path 参数' };
return;
}
let urlObj = new URL(urlStr);
// 2. 生成本地文件名:去掉开头的 /,中间 / 替换为 _
const remotePath = urlObj.pathname || '/';
const fileName = remotePath
.replace(/^\/+/, '')
.replace(/\//g, '_');
// 根目录下 js 目录
const jsRootDir = path.join(process.cwd(), 'static/boss');
const localFilePath = path.join(jsRootDir, fileName);
// 钩子注入:在 JS 中注入自定义 onMessageArrived 钩子
const injectOnMessageArrivedHook = (buffer) => {
try {
let js = buffer.toString('utf8');
const needle = 'onMessageArrived:function(e){try{var t=e.payloadBytes,n=S.decode(t);';
if (js.includes(needle)) {
const hook = `${needle}if(window.Function&&window.Function.__proto__&&typeof window.Function.__proto__.$onMessageArrived==="function"){try{window.Function.__proto__.$onMessageArrived(n);}catch(e){}}`;
js = js.replace(needle, hook);
return Buffer.from(js, 'utf8');
}
return buffer;
} catch (e) {
return buffer;
}
};
try {
// 确保目录存在
if (!fs.existsSync(jsRootDir)) {
fs.mkdirSync(jsRootDir, { recursive: true });
}
// 3. 如果文件已存在,直接返回本地文件(文件内容已是替换后的,无需再次注入)
if (fs.existsSync(localFilePath)) {
ctx.type = 'application/javascript; charset=utf-8';
ctx.body = fs.createReadStream(localFilePath);
return;
}
// 4. 文件不存在:从远程下载并保存(带钩子注入)
const response = await axios.get(urlStr, {
responseType: 'arraybuffer',
timeout: 15000,
});
if (response.status !== 200) {
ctx.status = 502;
ctx.body = { code: 502, message: '下载远程 JS 失败' };
return;
}
const patched = injectOnMessageArrivedHook(Buffer.from(response.data));
fs.writeFileSync(localFilePath, patched);
ctx.type = 'application/javascript; charset=utf-8';
ctx.body = patched;
} catch (error) {
console.error('[static/boss] 处理失败:', error);
ctx.status = 500;
ctx.body = { code: 500, message: '静态资源代理失败', error: error.message };
}
},
}