做外贸需要关注的网站有什么好处,怎样做网络推广wsyx挣钱,专业搜索引擎seo服务,如何利用fortran语言建设网站【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#xff1a;Win10 JDK#xff1a;1.8.0_351 IDEA#xff1a;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#xff0c;这还是第一次做这种编辑器#xf… 【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 JDK1.8.0_351 IDEA2022.3.3 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 DefaultListModelString provinceModel;public static JListString provinceList;//省份列表public static DefaultListModelString cityModel;public static JListString cityList;//城市列表public static DefaultListModelString districtModel;public static JListString 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() {Overridepublic 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 {ListString 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ListString 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ListString 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 ListString getProvinceData() {ListString 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 ListString getCityData(String province) {ListString 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 ListString getDistrictData(String province, String city) {ListString 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;}
}3.效果展示
我这里测试代码中的数据只模拟了一部分数据在生产中根据实际接口获取数据。这里推荐使用 2022年中华人民共和国县以上行政区划代码 国家区划数据
