多语言实现方案
1、一个完整多个路径来实现多语言
2、前端来实现多语言（先配置好两种语言，动态切换内容），比如 i18n，vue-i18n
3、服务端的 header 来实现切换多语言 accept-language: zh-CN,zh;q=0.9
const fs = require("fs"); const path = require("path"); const url = require("url"); const http = require("http"); const querystring = require("querystring"); const messages = { en: { message: { hello: "hello world" } }, "zh-CN": { message: { hello: "你好世界" } } }; http.createServer((req, res) => { const { pathname } = url.parse(req.url, true); const absPath = path.join(__dirname, pathname); fs.stat(absPath, (err, statObj) => { if (err) return res.end("Not Found"); console.log("absPath----->", absPath); let lans = req.headers["accept-language"]; console.log("lans----->", lans); // zh-CN,zh;q=0.9 if (lans) { let r = querystring.parse(lans, ",", ";"); // 根据权重进行排序 console.log("r----->", r); // { 'zh-CN': '', zh: 'q=0.9' } let arr = []; Object.keys(r).forEach((key) => { if (r[key] == "") { arr.push({ name: key, q: 1 }); } else { arr.push({ name: key, q: r[key].split("=")[1] }); } }); arr.sort((a, b) => b.q - a.q); console.log("arr----->", arr); // [ { name: 'zh-CN', q: 1 }, { name: 'zh', q: '0.9' } ] let msgObj = Object.create(null); for (let i = 0; i < arr.length; i++) { msgObj = messages[arr[i].name]; if (msgObj) { res.end(msgObj.message.hello); break; } } if (!msgObj) { res.end(messages.en.message.hello); } } else { res.end(messages.en.message.hello); } }); }).listen(3000);
启动服务
nodemon language.js
curl -v --header "Accept-Language: zh-CN;q=0.9,en;q=0.8" http://localhost:3000/
curl -v --header "Accept-Language: zh-CN;q=0.9,en" http://localhost:3000/
