77 lines
2.3 KiB
JavaScript
77 lines
2.3 KiB
JavaScript
const express = require('express')
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const router = express.Router()
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const {getDB} = require('../database')
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/**
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* @swagger
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* /api/common/provinces:
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* get:
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* summary: 获取省份列表
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* description: 获取省份列表
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* responses:
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* '200':
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* description: 成功获取分类列表
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*/
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router.get('/provinces', async (req, res) => {
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try {
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// 按level分组数据
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const regionsByLevel = {
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1: [], // 省份
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2: [], // 城市
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3: [] // 区县
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};
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if (!global.provinces) {
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// 一次性获取所有区域数据（省、市、区县）
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const [allRegions] = await getDB().execute(
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`SELECT code, name as label, level, parent_code
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FROM china_regions
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WHERE level <= 3
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ORDER BY level, code`
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);
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// 创建code到region的映射，便于快速查找
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const regionMap = {};
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// 分组并建立映射
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allRegions.forEach(region => {
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region.children = []; // 初始化children数组
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regionsByLevel[region.level].push(region);
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regionMap[region.code] = region;
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});
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// 构建层级关系：先处理区县到城市的关系
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regionsByLevel[3].forEach(district => {
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const parentCity = regionMap[district.parent_code];
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if (parentCity) {
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parentCity.children.push(district);
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}
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});
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// 再处理城市到省份的关系
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regionsByLevel[2].forEach(city => {
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const parentProvince = regionMap[city.parent_code];
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if (parentProvince) {
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parentProvince.children.push(city);
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}
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});
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global.provinces = regionsByLevel[1];
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} else {
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console.log('1111')
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regionsByLevel[1] = global.provinces;
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}
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// 返回省份数据（已包含完整的层级结构）
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res.json({
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success: true,
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data: regionsByLevel[1]
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});
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} catch (error) {
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console.error('获取省份列表错误:', error);
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res.status(500).json({message: '获取省份列表失败'});
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}
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});
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module.exports = router |