init：代码初始化

src/controllers/priceController.js

@@ -0,0 +1,65 @@
+const PriceService = require('../services/priceService');
+const { asyncHandler } = require('../middlewares/errorHandler');
+
+/**
+ * 价格控制器
+ * 处理 HTTP 请求和响应
+ */
+class PriceController {
+  /**
+   * 按地区查询价格
+   * GET /api/prices/region?region=昆明&date=2026-01-05&page=1&pageSize=20
+   */
+  static getByRegion = asyncHandler(async (req, res) => {
+    const { region, date, page = 1, pageSize = 20 } = req.query;
+
+    const result = await PriceService.getByRegion(region, date, page, pageSize);
+    res.json(result);
+  });
+
+  /**
+   * 搜索价格数据
+   * GET /api/prices/search?material=螺纹钢&startDate=2026-01-01&endDate=2026-01-05
+   */
+  static search = asyncHandler(async (req, res) => {
+    const filters = req.query;
+
+    const result = await PriceService.search(filters);
+    res.json(result);
+  });
+
+  /**
+   * 获取价格统计
+   * GET /api/prices/stats?region=昆明&material=螺纹钢&days=30
+   */
+  static getStats = asyncHandler(async (req, res) => {
+    const filters = req.query;
+
+    const result = await PriceService.getStats(filters);
+    res.json(result);
+  });
+
+  /**
+   * 获取价格趋势
+   * GET /api/prices/trend?region=昆明&material=螺纹钢&days=30
+   */
+  static getTrend = asyncHandler(async (req, res) => {
+    const filters = req.query;
+
+    const result = await PriceService.getTrend(filters);
+    res.json(result);
+  });
+
+  /**
+   * 导入数据
+   * POST /api/prices/import
+   */
+  static importData = asyncHandler(async (req, res) => {
+    const { prices } = req.body;
+
+    const result = await PriceService.importData(prices);
+    res.json(result);
+  });
+}
+
+module.exports = PriceController;