第一次搞swing，自定义JDialog的例子较少，写下来备忘 ，对JDialog中的文本框进行了验证 package com.chauvet; import java.awt.Component; import java.awt.Dimension; import java.awt.Toolkit; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.awt.event.KeyEvent; import java.awt.event.KeyListener; import java.util.HashMap; import java.util.Map; import javax.swing.JButton; import javax.swing.JDialog; import javax.swing.JFrame; import javax.swing.JLabel; import javax.swing.JTextField; import javax.swing.border.EmptyBorder; /*** * 定义的Dialog对话框 * @author WXW * */ public class MyDialog extends JDialog implements ActionListener { private static final long serialVersionUID = 1L; public static void main(String[] args) { Map<String,String> caipinMap = new HashMap<String,String>(); String yxrsKey = "diyidaocai"; String yxrsVal = "1"; String djjdKey = "dierdaocai"; String djjdVal = "65"; String fqjdKey = "disandaocai"; String fqjdVal = "123"; String abcdKey = "disidaocai"; String abcdVal = "7"; caipinMap.put(yxrsKey,yxrsVal); caipinMap.put(djjdKey,djjdVal); caipinMap.put(fqjdKey,fqjdVal); caipinMap.put(abcdKey,abcdVal); JFrame alertFrame = new JFrame(); MyDialog d =new MyDialog(alertFrame, true,caipinMap,360,320); d.setVisible(true); } JButton okBtn = new JButton("确定"); JButton cancelBtn = new JButton("关闭"); int x = 50; int y = 30; int width = 65; int height = 20; /*** * 自定义 Dialog * @param parent * 父Frame * @param modal * 是否模式窗体 * @param caipinMap * 数据Map * @param windowWidth * 宽度 需根据数据计算高度 * @param windowHeight * 高度 默认320即可 */ public MyDialog(JFrame parent, boolean modal,Map<String,String> caipinMap,int windowWidth,int windowHeight) { super(parent,modal); Dimension screenSize = Toolkit.getDefaultToolkit().getScreenSize(); //得到屏幕的尺寸 int screenWidth = screenSize.width; int screenHeight = screenSize.height; JButton []addBtns = new JButton[caipinMap.keySet().size()]; JButton []mutBtns = new JButton[caipinMap.keySet().size()]; int btnIndex = 0; setTitle("test"); setSize(windowWidth,windowHeight); setLayout(null); setResizable(false); // this.setUndecorated(true); // setDefaultCloseOperation(JDialog.DO_NOTHING_ON_CLOSE); setLocation((screenWidth - this.getWidth()) / 2, (screenHeight - this.getHeight())/2); for (String strKey : caipinMap.keySet()) { JLabel cpNameLBL = new JLabel(strKey+":"); add(cpNameLBL); cpNameLBL.setBounds(x,y,width,height); cpNameLBL.setName("lbl"+strKey); JLabel noticeLbl = new JLabel(); noticeLbl.setName("lbl"+strKey); noticeLbl.setBounds(x+120,y,width,height); JTextField cpCountJTF = new JTextField(caipinMap.get(strKey)); add(cpCountJTF); cpCountJTF.setName("jtf"+strKey); cpCountJTF.setBounds(x+160,y,width,height); cpCountJTF.requestFocus(); // cpCountJTF.setDocument(new NumberLenghtLimitedDmt(3)); cpCountJTF.addKeyListener(new KeyListener() { @Override public void keyTyped(KeyEvent e) { JTextField jtf = (JTextField) e.getSource(); String selectVal = jtf.getSelectedText(); int keyChar = e.getKeyChar(); String val = jtf.getText(); if(null == val || val.trim().length() <= 0 || val.replaceAll("0", "").length() <= 0){ //文本框中没有值时默认为1 jtf.setText("1"); e.consume(); return; } int valLength = val.length(); if((null != selectVal && selectVal.length() == valLength) && keyChar == KeyEvent.VK_0){ jtf.setText("1"); e.consume(); return; } if ((keyChar >= KeyEvent.VK_0 && keyChar <= KeyEvent.VK_9)) { // 输入的是数字 if(valLength > 2){ // 长度大于2 if(keyChar != KeyEvent.VK_BACK_SPACE && !(null != selectVal && selectVal.trim().length() > 0) ){ // 按下的不是backspace键 e.consume(); } } return; } e.consume(); // 不是数字键 // JOptionPane.showMessageDialog(null, "非数字"); } @Override public void keyReleased(KeyEvent e) {} @Override public void keyPressed(KeyEvent e) {} }); addBtns[btnIndex] = new JButton("+"); addBtns[btnIndex].setName("btn"+strKey); addBtns[btnIndex].setBounds(x+260,y,width-40,height); addBtns[btnIndex].setBorder(new EmptyBorder(5,5,5,5)); addBtns[btnIndex].addActionListener(this); mutBtns[btnIndex] = new JButton("-"); mutBtns[btnIndex].setName("btn"+strKey); mutBtns[btnIndex].setBounds(x+80,y,width-40,height); mutBtns[btnIndex].setBorder(new EmptyBorder(5,5,5,5)); mutBtns[btnIndex].addActionListener(this); add(addBtns[btnIndex]); add(mutBtns[btnIndex]); y = y + 30; btnIndex ++; } add(okBtn); add(cancelBtn); okBtn.setBounds(windowWidth - 190, windowHeight - 80, 60, 25); okBtn.setName("ok"); cancelBtn.setBounds(windowWidth - 120, windowHeight - 80, 60, 25); cancelBtn.setName("cancel"); okBtn.addActionListener(this); cancelBtn.addActionListener(this); } public void actionPerformed(ActionEvent e) { Component[] cmp = getContentPane().getComponents(); JButton btn = (JButton)e.getSource(); String jtfKey = ""+btn.getName().replaceAll("btn", ""); if(null != jtfKey && !jtfKey.equals("ok") && !jtfKey.equals("cancel") ){ String btnText = btn.getText(); for (Component c : cmp) { if(c instanceof JTextField){ JTextField tf = (JTextField) c; if(c.getName().equals("jtf"+jtfKey)){ int val = Integer.parseInt(tf.getText()); if(btnText.equals("+")){ if(val < 999){ val = val + 1; } }else{ val = val - 1; if(val <= 0){ val = 1; } } tf.setText(String.valueOf(val)); } } } return; } if(e.getSource()==okBtn){ System.out.println("OK"); for (Component c : cmp) { if(c instanceof JTextField){ JTextField js = (JTextField) c; System.out.println(js.getName().replaceAll("jtf", "")+":"+js.getText()); } } return; } if(e.getSource()==cancelBtn){ System.out.println("cancel"); dispose(); return; } } }