java实现自定义日期选择器的方法实例

package com.jianggujin;import java.awt.Color;import java.awt.GridLayout;import java.awt.event.ActionEvent;import java.awt.event.ActionListener;import java.awt.event.ItemEvent;import java.awt.event.ItemListener;import java.awt.event.MouseAdapter;import java.awt.event.MouseEvent;import java.text.SimpleDateFormat;import java.util.Calendar;import java.util.Date;import javax.swing.ImageIcon;import javax.swing.JButton;import javax.swing.JComboBox;import javax.swing.JDialog;import javax.swing.JLabel;import javax.swing.JPanel;import javax.swing.UIManager;/** * 日期选择器控件 *  * @author jianggujin *  */@SuppressWarnings("serial")public final class JDateChooser extends JDialog{ // 定义相关参数 /** * 年份 */ private int year = 0; /** * 月份 */ private int month = 0; /** * 天 */ private int date = 0; /** * 日期选择背景色 */ private Color selectColor = Color.green; /** * 日期背景色 */ private Color dateColor = Color.white; /** * 日期鼠标进入背景色 */ private Color dateHoverColor = Color.lightGray; /** * 日期标题背景色 */ private Color dateTitleColor = Color.gray; /** * 日期标题字体颜色 */ private Color dateTitleFontColor = Color.black; /** * 日期字体颜色 */ private Color dateFontColor = Color.black; /** * 日期是否有效标志 */ private boolean flag = false; /** * 最小年份 */ private int minYear = 1900; /** * 最大年份 */ private int maxYear = 2050; // 定义所需组件 /** * 上一年 */ private JButton jbYearPre; /** * 下一年 */ private JButton jbYearNext; /** * 上一月 */ private JButton jbMonthPre; /** * 下一月 */ private JButton jbMonthNext; /** * 年份下拉选择框 */ private JComboBox<String> jcbYear; /** * 月份下拉选择框 */ private JComboBox<String> jcbMonth; /** * 天标签 */ private JLabel[][] jlDays; /** * 选择 */ private JButton jbChoose; /** * 今日 */ private JButton jbToday; /** * 取消 */ private JButton jbCancel; /** * 程序主方法 *  * @param args *   命令参数 */ public static void main(String[] args) {  try  {   UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());  }  catch (Exception e)  {  }  JDateChooser gg = new JDateChooser();  gg.showDateChooser();  System.out.println(gg.getDateFormat("yyyy-MM-dd")); } /** * 显示对话框 */ public void showDateChooser() {  setVisible(true); } /** * 关闭对话框 */ public void closeDateChooser() {  this.dispose(); } /** * 设置时间 *  * @param year *   年份 1900-2050 * @param month *   月份 1-12 * @param date *   天 */ public void setDate(int year, int month, int date) {  if (year >= minYear && year <= maxYear)  {   this.year = year;  }  else  {   return;  }  if (month >= 1 && month <= 12)  {   this.month = month;  }  else  {   return;  }  if (date > 0 && date <= getDaysInMonth(year, month))  {   this.date = date;  }  else  {   return;  } } /** * 获得用户操作是否有效标志 *  * @return 事件是否有效 */ public boolean getFlag() {  return flag; } /** * 构造方法 */ public JDateChooser() {  initComponent();  initComponentData();  addComponent();  addListener();  setDialogAttribute(); } /** * 实例化组件 */ private void initComponent() {  jbYearPre = new JButton();  jbYearNext = new JButton();  jbMonthPre = new JButton();  jbMonthNext = new JButton();  jcbYear = new JComboBox<String>();  jcbMonth = new JComboBox<String>();  jlDays = new JLabel[7][7];  jbChoose = new JButton();  jbToday = new JButton();  jbCancel = new JButton(); } /** * 初始化组件数据 */ private void initComponentData() {  jbYearPre.setText("←");  jbYearNext.setText("→");  jbMonthPre.setText("↑");  jbMonthNext.setText("↓");  Calendar calendar = Calendar.getInstance();  if (year != 0 && month != 0 && date != 0)  {   calendar.set(year, month - 1, date);  }  else  {   year = calendar.get(Calendar.YEAR);   month = calendar.get(Calendar.MONTH) + 1;   date = calendar.get(Calendar.DAY_OF_MONTH);  }  initYear();  jcbYear.setSelectedItem(year + "年");  for (int i = 1; i <= 12; i++)  {   jcbMonth.addItem(i + "月");  }  jcbMonth.setSelectedItem(month + "月");  for (int i = 0; i < 7; i++)  {   JLabel temp = new JLabel();   temp.setHorizontalAlignment(JLabel.CENTER);   temp.setVerticalAlignment(JLabel.CENTER);   temp.setOpaque(true);   temp.setBackground(dateTitleColor);   temp.setForeground(dateTitleFontColor);   jlDays[0][i] = temp;  }  for (int i = 1; i < 7; i++)  {   for (int j = 0; j < 7; j++)   {   JLabel temp = new JLabel();   temp.setHorizontalAlignment(JLabel.CENTER);   temp.setVerticalAlignment(JLabel.CENTER);   temp.setOpaque(true);   temp.setForeground(dateFontColor);   jlDays[i][j] = temp;   }  }  String[] days = { "日", "一", "二", "三", "四", "五", "六" };  for (int i = 0; i < 7; i++)  {   jlDays[0][i].setText(days[i]);  }  jbChoose.setText("选择");  jbToday.setText("今日");  jbCancel.setText("取消");  changeDate(); } /** * 初始化显示年份范围 */ private void initYear() {  jcbYear.removeAllItems();  for (int i = minYear; i <= maxYear; i++)  {   jcbYear.addItem(i + "年");  } } /** * 添加组件 */ private void addComponent() {  // 添加背部组件  JPanel north = new JPanel();  north.add(jbYearPre);  north.add(jbMonthPre);  north.add(jcbYear);  north.add(jcbMonth);  north.add(jbMonthNext);  north.add(jbYearNext);  this.add(north, "North");  // 添加中间组件  JPanel center = new JPanel(new GridLayout(7, 7));  for (int i = 0; i < 7; i++)  {   for (int j = 0; j < 7; j++)   {   center.add(jlDays[i][j]);   }  }  this.add(center);  // 添加南部组件  JPanel jpSouth = new JPanel();  jpSouth.add(jbChoose);  jpSouth.add(jbToday);  jpSouth.add(jbCancel);  this.add(jpSouth, "South"); } /** * 获得指定年指定月份的天数 *  * @param year *   年份 * @param month *   月份 * @return 天数 */ private int getDaysInMonth(int year, int month) {  switch (month)  {  case 1:  case 3:  case 5:  case 7:  case 8:  case 10:  case 12:   return 31;  case 4:  case 6:  case 9:  case 11:   return 30;  case 2:   if (isLeapYear(year))   {   return 29;   }   return 28;  default:   return 0;  } } /** * 清空日期 */ private void clearDate() {  for (int i = 1; i < 7; i++)  {   for (int j = 0; j < 7; j++)   {   jlDays[i][j].setText("");   }  } } /** * 更改日期 *  */ private void changeDate() {  refreshLabelColor();  clearDate();  Calendar calendar = Calendar.getInstance();  calendar.set(year, month - 1, 1);  int day_in_week = calendar.get(Calendar.DAY_OF_WEEK);  int days = getDaysInMonth(year, month);  if (date > days)  {   date = 1;  }  int temp = 0;  for (int i = day_in_week - 1; i < 7; i++)  {   temp++;   jlDays[1][i].setText(temp + "");   if (temp == date)   {   jlDays[1][i].setBackground(selectColor);   }  }  for (int i = 2; i < 7; i++)  {   for (int j = 0; j < 7; j++)   {   temp++;   if (temp > days)   {    return;   }   jlDays[i][j].setText(temp + "");   if (temp == date)   {    jlDays[i][j].setBackground(selectColor);   }   }  } } /** * 添加监听 */ private void addListener() {  LabelMouseListener labelMouseListener = new LabelMouseListener();  for (int i = 1; i < 7; i++)  {   for (int j = 0; j < 7; j++)   {   jlDays[i][j].addMouseListener(labelMouseListener);   }  }  ButtonActionListener buttonActionListener = new ButtonActionListener();  jbYearPre.addActionListener(buttonActionListener);  jbYearNext.addActionListener(buttonActionListener);  jbMonthPre.addActionListener(buttonActionListener);  jbMonthNext.addActionListener(buttonActionListener);  jbChoose.addActionListener(buttonActionListener);  jbToday.addActionListener(buttonActionListener);  jbCancel.addActionListener(buttonActionListener);  ComboBoxItemListener comboBoxItemListener = new ComboBoxItemListener();  jcbYear.addItemListener(comboBoxItemListener);  jcbMonth.addItemListener(comboBoxItemListener); } /** * 解析年份或月份 *  * @param yearOrMonth *   年份或月份字符串 * @return 年份或月份 */ private int parseYearOrMonth(String yearOrMonth) {  return Integer.parseInt(yearOrMonth.substring(0, yearOrMonth.length() - 1)); } /** * 判断是否为闰年 *  * @param year *   年份 * @return true 闰年<br/> *   false 平年 */ private boolean isLeapYear(int year) {  return (year % 4 == 0 && year % 100 != 0) || (year % 400 == 0); } /** * 设置对话框属性 */ private void setDialogAttribute() {  this.setDefaultCloseOperation(DISPOSE_ON_CLOSE);  this.setSize(400, 300);  this.setLocationRelativeTo(null);  // 显示为模态对话框  this.setModal(true);  this.setTitle("日期选择器");  this.setIconImage((new ImageIcon(this.getClass().getResource("/calendar.png"))).getImage()); } /** * 刷新日期标签背景颜色 */ private void refreshLabelColor() {  for (int i = 1; i < 7; i++)  {   for (int j = 0; j < 7; j++)   {   jlDays[i][j].setBackground(dateColor);   }  } } /** * 获得显示最小年份 *  * @return 显示最小年份 */ public int getMinYear() {  return minYear; } /** * 获得显示最大年份 *  * @return 显示最大年份 */ public int getMaxYear() {  return maxYear; } /** * 设置显示最小年份和最大年份(1900-9999) *  * @param minYear *   最小年份 * @param maxYear *   最大年份 */ public void setMinAndMaxYear(int minYear, int maxYear) {  if (minYear > maxYear || minYear < 1900 || maxYear > 9999)  {   return;  }  this.minYear = minYear;  this.maxYear = maxYear;  initYear(); } /** * 获得选中背景颜色 *  * @return 选中背景颜色 */ public Color getSelectColor() {  return selectColor; } /** * 设置选中背景颜色 *  * @param selectColor *   选中背景颜色 */ public void setSelectColor(Color selectColor) {  this.selectColor = selectColor; } /** * 获得日期背景颜色 *  * @return 日期背景颜色 */ public Color getDateColor() {  return dateColor; } /** * 设置日期背景颜色 *  * @param dateColor *   日期背景颜色 */ public void setDateColor(Color dateColor) {  this.dateColor = dateColor; } /** * 获得日期鼠标进入背景颜色 *  * @return 日期鼠标进入背景颜色 */ public Color getDetaHoverColor() {  return dateHoverColor; } /** * 设置日期鼠标进入背景颜色 *  * @param dateHoverColor *   日期鼠标进入背景颜色 */ public void setDateHoverColor(Color dateHoverColor) {  this.dateHoverColor = dateHoverColor; } /** * 获得日期标题背景颜色 *  * @return 日期标题背景颜色 */ public Color getDateTitleColor() {  return dateTitleColor; } /** * 设置日期标题背景颜色 *  * @param dateTitleColor *   日期标题背景颜色 */ public void setDateTitleColor(Color dateTitleColor) {  this.dateTitleColor = dateTitleColor; } /** * 获得日期标题字体颜色 *  * @return 日期标题字体颜色 */ public Color getDateTitleFontColor() {  return dateTitleFontColor; } /** * 设置日期标题字体颜色 *  * @param dateTitleFontColor *   日期标题字体颜色 */ public void setDateTitleFontColor(Color dateTitleFontColor) {  this.dateTitleFontColor = dateTitleFontColor; } /** * 获得日期字体颜色 *  * @return 日期字体颜色 */ public Color getDateFontColor() {  return dateFontColor; } /** * 设置日期字体颜色 *  * @param dateFontColor *   日期字体颜色 */ public void setDateFontColor(Color dateFontColor) {  this.dateFontColor = dateFontColor; } /** * 获得选择年份 *  * @return 选择年份 */ public int getYear() {  return year; } /** * 获得选中月份 *  * @return 选中月份 */ public int getMonth() {  return month; } /** * 获得选中天为当月第几天 *  * @return 选中天为当月第几天 */ public int getDate() {  return date; } /** * 获得选中天为一周中第几天 *  * @return 选中天为一周中第几天 */ public int getDayOfWeek() {  return getCalendar().get(Calendar.DAY_OF_WEEK); } /** * 获得选中天为一年中第几天 *  * @return 选中天为一年中第几天 */ public int getDayOfYear() {  return getCalendar().get(Calendar.DAY_OF_YEAR); } /** * 获得日期对象 *  * @return 日期对象 */ public Date getDateObject() {  return getCalendar().getTime(); } /** * 获得以指定规则格式化的日期字符串 *  * @param format *   格式化规则 * @return 日期字符串 */ public String getDateFormat(String format) {  return new SimpleDateFormat(format).format(getDateObject()); } /** * 获得Calendar对象 *  * @return Calendar对象 */ private Calendar getCalendar() {  Calendar calendar = Calendar.getInstance();  calendar.set(year, month - 1, date);  return calendar; } /** * 标签鼠标监听 *  * @author jianggujin *  */ final class LabelMouseListener extends MouseAdapter {  @Override  public void mouseClicked(MouseEvent e)  {   JLabel temp = (JLabel) e.getSource();   if (!temp.getText().equals(""))   {   int date = Integer.parseInt(temp.getText());   {    if (date != JDateChooser.this.date)    {     JDateChooser.this.date = date;     refreshLabelColor();     temp.setBackground(selectColor);    }   }   }  }  @Override  public void mouseEntered(MouseEvent e)  {   JLabel temp = (JLabel) e.getSource();   if (!temp.getText().equals(""))   {   temp.setBackground(dateHoverColor);   }  }  @Override  public void mouseExited(MouseEvent e)  {   JLabel temp = (JLabel) e.getSource();   if (!temp.getText().equals(""))   {   if (Integer.parseInt(temp.getText()) != date)   {    temp.setBackground(dateColor);   }   else   {    temp.setBackground(selectColor);   }   }  } } /** * 按钮动作监听 *  * @author jianggujin *  */ final class ButtonActionListener implements ActionListener {  public void actionPerformed(ActionEvent e)  {   if (e.getSource() == jbYearPre)   {   int select = jcbYear.getSelectedIndex();   if (select > 0)   {    jcbYear.setSelectedIndex(select - 1);   }   }   else if (e.getSource() == jbYearNext)   {   int select = jcbYear.getSelectedIndex();   if (select < jcbYear.getItemCount() - 1)   {    jcbYear.setSelectedIndex(select + 1);   }   }   else if (e.getSource() == jbMonthPre)   {   int select = jcbMonth.getSelectedIndex();   if (select > 0)   {    jcbMonth.setSelectedIndex(select - 1);   }   }   else if (e.getSource() == jbMonthNext)   {   int select = jcbMonth.getSelectedIndex();   if (select < jcbMonth.getItemCount() - 1)   {    jcbMonth.setSelectedIndex(select + 1);   }   }   else if (e.getSource() == jbChoose)   {   flag = true;   closeDateChooser();   }   else if (e.getSource() == jbToday)   {   flag = true;   Calendar calendar = Calendar.getInstance();   year = calendar.get(Calendar.YEAR);   month = calendar.get(Calendar.MONTH) + 1;   date = calendar.get(Calendar.DATE);   closeDateChooser();   }   else if (e.getSource() == jbCancel)   {   flag = false;   closeDateChooser();   }  } } /** * 下拉选择框项改变监听 *  * @author jianggujin *  */ final class ComboBoxItemListener implements ItemListener {  public void itemStateChanged(ItemEvent e)  {   if (e.getSource() == jcbYear)   {   int year = parseYearOrMonth(jcbYear.getSelectedItem().toString());   if (year != JDateChooser.this.year)   {    JDateChooser.this.year = year;    changeDate();   }   }   else if (e.getSource() == jcbMonth)   {   int month = parseYearOrMonth(jcbMonth.getSelectedItem().toString());   if (month != JDateChooser.this.month)   {    JDateChooser.this.month = month;    changeDate();   }   }  } }}