const express = require('express'); const fs = require('fs'); const path = require('path'); const app = express(); const PORT = process.env.PORT || 3000; const JSON_FOLDER_PATH = path.join(__dirname, 'json'); const LOCALES_JSON_FOLDER_PATH = path.join(__dirname, 'json/locales'); function transformKeysToLowerCase(obj) { if (typeof obj !== 'object' || obj === null) { return obj; } if (Array.isArray(obj)) { return obj.map(value => transformKeysToLowerCase(value)); } let newObj = {}; for (let key in obj) { newObj[key.toLowerCase()] = transformKeysToLowerCase(obj[key]); } return newObj; } // 获取文件夹内的所有 JSON 文件 app.get('/json-files', (req, res) => { fs.readdir(JSON_FOLDER_PATH, (err, files) => { if (err) { return res.status(500).send('Server error.'); } const jsonFiles = files.filter(file => file.endsWith('.json')); res.json(jsonFiles); }); }); // 获取特定的 JSON 文件 app.get('/json-files/:filename', (req, res) => { const filePath = path.join(JSON_FOLDER_PATH, req.params.filename); fs.readFile(filePath, 'utf8', (err, data) => { if (err) { if (err.code === 'ENOENT') { return res.status(404).send('File not found.'); } return res.status(500).send('Server error.'); } try { const jsonData = JSON.parse(data); res.json(transformKeysToLowerCase(jsonData)); } catch (parseErr) { res.status(500).send('Error parsing JSON.'); } }); }); // 获取locales目录下的特定的 JSON 文件 app.get('/json-files/locales/:filename', (req, res) => { const filePath = path.join(LOCALES_JSON_FOLDER_PATH, req.params.filename); fs.readFile(filePath, 'utf8', (err, data) => { if (err) { if (err.code === 'ENOENT') { return res.status(404).send('File not found.'); } return res.status(500).send('Server error.'); } try { const jsonData = JSON.parse(data); res.json(transformKeysToLowerCase(jsonData)); } catch (parseErr) { res.status(500).send('Error parsing JSON.'); } }); }); app.listen(PORT, () => { console.log(`Server is running on port ${PORT}`); });