java+city-picker自定义省市区选择

来源：互联网发布：伯乐在线人工智能编辑：程序博客网时间：2024/05/20 01:45

运用city-picker创建省市区选择。

这里直接附上city-picker的地址http://tshi0912.github.io/city-picker/

方法

导入js文件

<script src="/jquery.js"></script><!-- jQuery is required --><script src="/city-picker.data.js"></script><script src="/city-picker.js"></script>

加上标签 data-toggle="city-picker"

<div data-toggle="city-picker">   <input readonly type="text" data-toggle="city-picker" ></div>

这样一个全国省份的省市区选择demo就做好了

原理是通过js调取city-picker.data.js里面的json数据。然后展示输入，json格式如图

<span style="white-space:pre"></span>86: {                'A-G': [                    {code: '340000', address: '安徽省'},                    {code: '110000', address: '北京市'},                    {code: '500000', address: '重庆市'},                    {code: '350000', address: '福建省'},                    {code: '620000', address: '甘肃省'},                    {code: '440000', address: '广东省'},                    {code: '450000', address: '广西壮族自治区'},                    {code: '520000', address: '贵州省'}],                'H-K': [                    {code: '460000', address: '海南省'},                    {code: '130000', address: '河北省'},                    {code: '230000', address: '黑龙江省'},                    {code: '410000', address: '河南省'},                    {code: '420000', address: '湖北省'},                    {code: '430000', address: '湖南省'},                    {code: '320000', address: '江苏省'},                    {code: '360000', address: '江西省'},                    {code: '220000', address: '吉林省'}],                'L-S': [                    {code: '210000', address: '辽宁省'},                    {code: '150000', address: '内蒙古自治区'},                    {code: '640000', address: '宁夏回族自治区'},                    {code: '630000', address: '青海省'},                    {code: '370000', address: '山东省'},                    {code: '310000', address: '上海市'},                    {code: '140000', address: '山西省'},                    {code: '610000', address: '陕西省'},                    {code: '510000', address: '四川省'}],                'T-Z': [                    {code: '120000', address: '天津市'},                    {code: '650000', address: '新疆维吾尔自治区'},                    {code: '540000', address: '西藏自治区'},                    {code: '530000', address: '云南省'},                    {code: '330000', address: '浙江省'}]            },            110000: {                110100: '北京市',            },            110100: {                110101: '东城区',                110102: '西城区',                110105: '朝阳区',                110106: '丰台区',                110107: '石景山区',                110108: '海淀区',                110109: '门头沟区',                110111: '房山区',                110112: '通州区',                110113: '顺义区',                110114: '昌平区',                110115: '大兴区',                110116: '怀柔区',                110117: '平谷区',                110228: '密云县',                110229: '延庆县'            },            120000: {                120100: '天津市'            },            120100: {                120101: '和平区',                120102: '河东区',                120103: '河西区',                120104: '南开区',                120105: '河北区',                120106: '红桥区',                120110: '东丽区',                120111: '西青区',                120112: '津南区',                120113: '北辰区',                120114: '武清区',                120115: '宝坻区',                120116: '滨海新区',                120221: '宁河县',                120223: '静海县',                120225: '蓟县'            },            130000: {                130100: '石家庄市',                130200: '唐山市',                130300: '秦皇岛市',                130400: '邯郸市',                130500: '邢台市',                130600: '保定市',                130700: '张家口市',                130800: '承德市',                130900: '沧州市',                131000: '廊坊市',                131100: '衡水市'            },

还有很多很多。这是全国的，但是如何从自己数据库自定义数据给前端呢。
观察js结构可以得到这里面都是一些树形结构

86:{}里面第一层是选择第二层是省份代码

跟86同层的都是省市的树形结构和市区的树形结构。

这样我们可以从数据库中找出我们需要显示的省市区数据给city-picker

先附上代码：

<span style="white-space:pre"></span>// 增加省份PageData tempPd = new PageData();List<PageData> provinces = ordersService.listAllProvince(pd);//获取所有的省份tempPd.put("中国", provinces);data.put("86", tempPd);// 增加城市List<PageData> citys = ordersService.listAllCity(pd);//获取所有的城市和省份Map<String, Object> provinceMap = new HashMap<>();for (PageData index : citys) {if (provinceMap.get(index.getString("province_Code")) == null) {Map<String, Object> cityMap = new HashMap<>();cityMap.put(index.getString("city_Code"), index.getString("city_Name"));provinceMap.put(index.getString("province_Code"), cityMap);} else {((HashMap<String, Object>) provinceMap.get(index.getString("province_Code"))).put(index.getString("city_Code"), index.getString("city_Name"));}}data.putAll(provinceMap);// 增加中心List<PageData> centers = centerService.listAll(pd);//获取所有中心Map<String, Object> centerMap = new HashMap<>();for (PageData index : centers) {if (index.get("center_City") == null) {continue;}if (centerMap.get(index.getString("center_City")) == null) {Map<String, Object> center = new HashMap<>();center.put(String.valueOf(index.get("CENTER_ID")), index.getString("CENTER_MC"));centerMap.put(index.getString("center_City"), center);} else {((HashMap<String, Object>) centerMap.get(index.get("center_City"))).put(String.valueOf(index.get("CENTER_ID")), index.getString("CENTER_MC"));}}data.putAll(centerMap);

这里面的PageData是继承的hashMap。获取所有城市的时候连表查询，查处城市所在省，字段分别是province_Code,province_Name,city_Code,city_Name;

查找中心（也就是区）的时候查找中心所在城市，字段分别是city_Code,city_Name,center_Name,center_Code.

把查出来的数据封装成city-picker.data.js一样格式数据后，转成json输出到前端，然后前端用给出的json数据显示city-pick就能自定义省市区三级联动了

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