java 地级市获取省 java地区选择

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mob64ca1411e411 2024-08-15 16:57:42

文章标签 java 地级市获取省 Java Swing ci List 文章分类 Java 后端开发

【Swing】Java Swing实现省市区选择编辑器

1.需求描述
2.需求实现
3.效果展示

系统：Win10
JDK：1.8.0_351
IDEA：2022.3.3

1.需求描述

在公司的一个 Swing 的项目上需要实现一个选择省市区的编辑器，这还是第一次做这种编辑器，在前端实现各种地区选择编辑器都比较常见，反而是 Swing 实现还是第一次，故将结果记录下来。

2.需求实现

地区选择从原理上来看很简单，通过级联的方式，将某个对象的所属对象数据展示出来，比如先选择省，就将省下的市等数据展示出来再选。

在 Swing 里我选择使用JPopupMenu 的方式来展示省市区的选择，相对于JDialog 来说，JPopupMenu 的级联操作更加简单一点。

实现代码如下：

import com.lijinjiang.beautyeye.BeautyEyeLNFHelper;

import javax.swing.*;
import java.awt.*;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.util.ArrayList;
import java.util.List;

/**
 * @Description 地址选择器demo
 * @Author 03010430
 * @ModifyDate 2024/3/13 13:20
 */
public class CityPickerDemo {
    public static JTextField textField;
    public static JPopupMenu popupMenu;
    public static DefaultListModel<String> provinceModel;
    public static JList<String> provinceList;//省份列表
    public static DefaultListModel<String> cityModel;
    public static JList<String> cityList;//城市列表
    public static DefaultListModel<String> districtModel;
    public static JList<String> districtList;//区县列表
    public static boolean haveInit;//初始化完毕

    public static void main(String[] args) {
        try {
            BeautyEyeLNFHelper.frameBorderStyle = BeautyEyeLNFHelper.FrameBorderStyle.generalNoTranslucencyShadow;
            BeautyEyeLNFHelper.launchBeautyEyeLNF();
        } catch (Exception e) {
            e.printStackTrace();
        }
        JFrame frame = new JFrame();
        JPanel panel = new JPanel(null);
        JLabel label = new JLabel("选择地址");
        label.setBounds(10, 30, 80, 36);
        panel.add(label);
        textField = new JTextField();
        textField.setEditable(false);
        textField.setBounds(100, 30, 270, 36);
        textField.addMouseListener(new MouseAdapter() {
            @Override
            public void mouseClicked(MouseEvent e) {
                clickFieldAction();
            }
        });
        panel.add(textField);
        frame.add(panel);
        frame.setSize(400, 150);
        frame.setLocationRelativeTo(null);
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);//设置默认关闭操作
        frame.setVisible(true);
    }

    public static void clickFieldAction() {
        popupMenu = new JPopupMenu();//初始化菜单面板
        provinceModel = new DefaultListModel<>();
        provinceList = new JList<>(provinceModel);//省份列表
        cityModel = new DefaultListModel<>();
        cityList = new JList<>(cityModel);//城市列表
        districtModel = new DefaultListModel<>();
        districtList = new JList<>(districtModel);//区县列表
        haveInit = false;//初始化赋值

        popupMenu.setLayout(new GridLayout(1, 3));
        //添加省份模块
        JScrollPane scrollPane1 = new JScrollPane(provinceList);
        scrollPane1.setBorder(BorderFactory.createTitledBorder("省级"));
        popupMenu.add(scrollPane1);
        //添加城市模块
        JScrollPane scrollPane2 = new JScrollPane(cityList);
        scrollPane2.setBorder(BorderFactory.createTitledBorder("地级/县级"));
        popupMenu.add(scrollPane2);
        //添加区县模块
        JScrollPane scrollPane3 = new JScrollPane(districtList);
        scrollPane3.setBorder(BorderFactory.createTitledBorder("县级"));
        popupMenu.add(scrollPane3);

        String text = textField.getText();
        if (text != null && !text.isEmpty()) {
            initProvinceData();
            String[] arr = text.trim().split("/");
            if (arr.length > 0) {
                String oldProvince = arr[0];
                if (provinceModel.contains(oldProvince)) {
                    provinceList.setSelectedValue(oldProvince, true);
                }
                if (arr.length > 1) {
                    String oldCity = arr[1];
                    if (cityModel.contains(oldCity)) {
                        cityList.setSelectedValue(oldCity, true);
                    }
                    if (arr.length > 2) {
                        String oldDistrict = arr[2];
                        if (districtModel.contains(oldDistrict)) {
                            districtList.setSelectedValue(oldDistrict, true);
                        }
                    }
                }
            }
        } else {
            initProvinceData();//初始化省份列表
        }
        haveInit = true;//标识初始化结束
        showPopupMenu(textField, popupMenu);
    }

    //第一级：省级
    public static void initProvinceData() {
        try {
            List<String> list = getProvinceData();//模拟省份数据
            for (String str : list) {
                provinceModel.addElement(str);
            }
            //添加事件监听
            provinceList.addListSelectionListener(e -> {
                String province = provinceList.getSelectedValue();
                if (province != null && !province.isEmpty()) {
                    initCityData(province);
                }
            });
        } catch (Exception e) {
            throw new RuntimeException(e);
        }
    }


    //第二级：地级/县级
    public static void initCityData(String province) {
        try {
            cityModel.removeAllElements();//清空城市数据
            districtModel.removeAllElements();//清空区县数据
            List<String> list = getCityData(province);//模拟城市数据
            if (haveInit && list.size() == 0) {
                //第二级没有数据时，直接第一级的数据填写上
                textField.setText(province);//取值
                popupMenu.setVisible(false); //隐藏菜单
                popupMenu.removeAll(); //移除所有菜单项
            } else {
                for (String str : list) {
                    cityModel.addElement(str);
                }
                //添加事件监听
                cityList.addListSelectionListener(e -> {
                    String selectedProvince = provinceList.getSelectedValue();
                    String selectedCity = cityList.getSelectedValue();
                    if (selectedCity != null && !selectedCity.isEmpty()) {
                        initDistrictData(selectedProvince, selectedCity);
                    }
                });
            }
        } catch (Exception e) {
            throw new RuntimeException(e);
        }
    }



    public static void initDistrictData(String province, String city) {
        try {
            districtModel.removeAllElements();//先清空区县数据
            List<String> list = getDistrictData(province,city);//模拟区县数据
            if (haveInit && list.size() == 0) {
                //区县没有数据时，直接将市的数据填写上
                String value = province + "/" + city;
                textField.setText(value);//取值
                popupMenu.setVisible(false); //隐藏菜单
                popupMenu.removeAll(); //移除所有菜单项
            } else {
                for (String str : list) {
                    districtModel.addElement(str);
                }
                //添加事件监听
                districtList.addListSelectionListener(e -> {
                    if (haveInit) {
                        String selectedDistrict = districtList.getSelectedValue();
                        if (selectedDistrict != null && !selectedDistrict.isEmpty()) {
                            String selectedProvince = provinceList.getSelectedValue();
                            String selectedCity = cityList.getSelectedValue();
                            String value = selectedProvince + "/" + selectedCity + "/" + selectedDistrict;
                            textField.setText(value);//取值
                            popupMenu.setVisible(false); //隐藏菜单
                            popupMenu.removeAll(); //移除所有菜单项
                        }
                    }
                });
            }
        } catch (Exception e) {
            throw new RuntimeException(e);
        }
    }


    //点击按钮事件，继承该类的编辑器都要复写改代码
    public static void showPopupMenu(JComponent parent, JPopupMenu popupMenu) {
        GraphicsEnvironment graphicsEnvironment = GraphicsEnvironment.getLocalGraphicsEnvironment();
        Rectangle maximumWindowBounds = graphicsEnvironment.getMaximumWindowBounds();
        double deskHeight = maximumWindowBounds.getHeight();//桌面高度（不包括任务栏）

        int width = parent.getWidth();
        if (width < 400) {
            width = 400;
        }
        popupMenu.setPreferredSize(new Dimension(width, 200));
        int popupMenuBottom = parent.getLocationOnScreen().y + parent.getHeight() + 200;

        if (deskHeight < popupMenuBottom) {//超出桌面高度显示在输入框上面
            popupMenu.show(parent, parent.getWidth() - width, -200);
        } else {
            popupMenu.show(parent, 0, parent.getHeight());
        }
    }

    //模拟省份数据
    private static List<String> getProvinceData() {
        List<String> list = new ArrayList<>();
        list.add("北京市");
        list.add("上海市");
        list.add("江西省");
        list.add("福建省");
        list.add("浙江省");
        list.add("江苏省");
        list.add("河北省");
        list.add("安徽省");
        list.add("台湾省");
        return list;
    }

    //模拟城市数据
    private static List<String> getCityData(String province) {
        List<String> list = new ArrayList<>();
        switch (province) {
            case "北京市": {
                list.add("东城区");
                list.add("西城区");
                list.add("朝阳区");
                break;
            }
            case "上海市": {
                list.add("黄浦区");
                list.add("徐汇区");
                list.add("长宁区");
                list.add("静安区");
                break;
            }
            case "江西省": {
                list.add("南昌市");
                list.add("景德镇市");
                list.add("萍乡市");
                list.add("九江市");
                list.add("新余市");
                list.add("鹰潭市");
                list.add("赣州市");
                list.add("吉安市");
                list.add("宜春市");
                list.add("抚州市");
                list.add("上饶市");
                break;
            }
            case "福建省": {
                list.add("福州市");
                list.add("厦门市");
                list.add("莆田市");
                break;
            }
            default:
                break;
        }
        return list;
    }

    private static List<String> getDistrictData(String province, String city) {
        List<String> list = new ArrayList<>();
        if ("江西省".equals(province)){
            if ("南昌市".equals(city)){
                list.add("东湖区");
                list.add("西湖区");
                list.add("青云谱区");
                list.add("青山湖区");
                list.add("新建区");
                list.add("红谷滩区");
                list.add("南昌县");
                list.add("安义县");
                list.add("进贤县");
            } else if ("上饶市".equals(city)){
                list.add("信州区");
                list.add("广丰区");
                list.add("广信区");
                list.add("玉山县");
                list.add("铅山县");
                list.add("横峰县");
                list.add("弋阳县");
                list.add("余干县");
                list.add("鄱阳县");
                list.add("万年县");
                list.add("婺源县");
                list.add("德兴市");
            }
        }
        return list;
    }
}