实现连接配置的导入/导出功能

packages/backend/src/connections/connections.routes.ts

@@ -1,19 +1,68 @@
-import { Router } from 'express';
+import { Router, Request, Response, NextFunction } from 'express'; // 引入 Request, Response, NextFunction
 import { isAuthenticated } from '../auth/auth.middleware'; // 引入认证中间件
+import multer from 'multer'; // 引入 multer 用于文件上传
 import {
     createConnection,
     getConnections,
     getConnectionById, // 引入获取单个连接的控制器
     updateConnection, // 引入更新连接的控制器
     deleteConnection, // 引入删除连接的控制器
-    testConnection // 引入测试连接的控制器
+    testConnection, // 引入测试连接的控制器
+    exportConnections, // 引入导出连接的控制器
+    importConnections // 引入导入连接的控制器
 } from './connections.controller';
 
 const router = Router();
 
+// 配置 multer 用于处理 JSON 文件上传 (存储在内存中)
+const storage = multer.memoryStorage(); // 将文件存储在内存中作为 Buffer
+const upload = multer({
+    storage: storage,
+    limits: { fileSize: 5 * 1024 * 1024 }, // 限制文件大小为 5MB
+    fileFilter: (req: Request, file, cb) => { // Add type for req
+        if (file.mimetype === 'application/json') {
+            cb(null, true);
+        } else {
+            // Attach error to request instead of calling cb with error directly
+            // This makes it easier to handle consistently and return JSON
+            (req as any).fileValidationError = '只允许上传 JSON 文件！';
+            cb(null, false); // Reject the file
+        }
+    }
+});
+
 // 应用认证中间件到所有 /connections 路由
 router.use(isAuthenticated); // 恢复认证检查
 
+// --- Specific routes before parameterized routes ---
+
+// GET /api/v1/connections/export - 导出连接配置
+router.get('/export', exportConnections);
+
+// POST /api/v1/connections/import - 导入连接配置
+router.post('/import', (req: Request, res: Response, next: NextFunction) => {
+    // Use multer middleware, but handle errors specifically
+    upload.single('connectionsFile')(req, res, (err: any) => {
+        // Check for file filter validation error first
+        if ((req as any).fileValidationError) {
+            return res.status(400).json({ message: (req as any).fileValidationError });
+        }
+        // Check for other multer errors (e.g., file size limit)
+        if (err instanceof multer.MulterError) {
+            return res.status(400).json({ message: `文件上传错误: ${err.message}` });
+        } else if (err) {
+            // Other unexpected errors during upload
+            console.error("Unexpected error during file upload:", err);
+            return res.status(500).json({ message: '文件上传处理失败' });
+        }
+        // If no errors, proceed to the controller
+        next();
+    });
+}, importConnections);
+
+
+// --- General CRUD and other routes ---
+
 // GET /api/v1/connections - 获取连接列表
 router.get('/', getConnections);