适用于JTextArea的查找替换对话框
package test.tool.gui.dbtool.dialog;import java.awt.event.KeyEvent;import javax.swing.JOptionPane;import javax.swing.JTextArea;import test.tool.gui.common.SysFontAndFace;import test.tool.gui.dbtool.mycomponent.MyJTextField;public class FindReplaceDialog extends javax.swing.JDialog {private static final long serialVersionUID = 1L;private javax.swing.JButton jButton_cancel; private javax.swing.JButton jButton_findNext; private javax.swing.JButton jButton_replace; private javax.swing.JButton jButton_replaceAll; private javax.swing.JCheckBox jCheckBox_case; private javax.swing.JLabel jLabel1; private javax.swing.JLabel jLabel2; private MyJTextField jTextField_find; private MyJTextField jTextField_replace; private JTextArea textArea = null; private int findIndex = 0 ; public FindReplaceDialog(java.awt.Frame parent, JTextArea textArea) { super(parent, false); initComponents(); this.textArea = textArea; this.findIndex = 0; this.setLocationRelativeTo(parent); this.setResizable(false); this.setDefaultCloseOperation(javax.swing.WindowConstants.DISPOSE_ON_CLOSE);//隐藏窗口并释放资源if(textArea.isEditable()){this.jButton_replace.setEnabled(true);this.jButton_replaceAll.setEnabled(true);}else{this.jButton_replace.setEnabled(false);this.jButton_replaceAll.setEnabled(false);} } private void initComponents() { jLabel1 = new javax.swing.JLabel(); jLabel2 = new javax.swing.JLabel(); jTextField_find = new MyJTextField(); jTextField_replace = new MyJTextField(); jCheckBox_case = new javax.swing.JCheckBox(); jButton_findNext = new javax.swing.JButton(); jButton_replace = new javax.swing.JButton(); jButton_replaceAll = new javax.swing.JButton(); jButton_cancel = new javax.swing.JButton(); setTitle("查找/替换"); jLabel1.setText("查找内容："); jLabel2.setText("替换为："); jCheckBox_case.setText("区分大小写"); jCheckBox_case.setSelected(true);//默认是大小写敏感的 jCheckBox_case.setFont(SysFontAndFace.font); jButton_findNext.setText("查找下一个"); jButton_replace.setText("替换"); jButton_replaceAll.setText("全部替换"); jButton_cancel.setText("取消"); jButton_findNext.addActionListener(new java.awt.event.ActionListener() { public void actionPerformed(java.awt.event.ActionEvent evt) { String str = textArea.getSelectedText(); if(str==null||"".equals(str)) { findIndex=0; } find(jTextField_find.getText(),findIndex); } }); jButton_replace.addActionListener(new java.awt.event.ActionListener() { public void actionPerformed(java.awt.event.ActionEvent evt) { String str = textArea.getSelectedText(); if(str!=null&&!"".equals(str)){ textArea.replaceSelection(jTextField_replace.getText()); } } }); jButton_replaceAll.addActionListener(new java.awt.event.ActionListener() { public void actionPerformed(java.awt.event.ActionEvent evt) { count = 0; replaceAll(jTextField_find.getText(),jTextField_replace.getText(), 0 ,textArea.getText().length()); } }); jButton_cancel.addActionListener(new java.awt.event.ActionListener() { public void actionPerformed(java.awt.event.ActionEvent evt) { close(); } }); //为 jTextField_find 设置键盘监听事件，回车执行 【查找下一个】 jTextField_find.addKeyListener(new java.awt.event.KeyAdapter() { public void keyPressed(java.awt.event.KeyEvent evt) { if (evt.getKeyCode() == KeyEvent.VK_ENTER) { String str = textArea.getSelectedText(); if(str==null||"".equals(str)) { findIndex=0; } find(jTextField_find.getText(),findIndex); } } }); //-------------------布局信息----------------- org.jdesktop.layout.GroupLayout layout = new org.jdesktop.layout.GroupLayout(getContentPane()); getContentPane().setLayout(layout); layout.setHorizontalGroup( layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING) .add(layout.createSequentialGroup() .add(21, 21, 21) .add(layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING) .add(layout.createSequentialGroup() .add(jCheckBox_case) .addPreferredGap(org.jdesktop.layout.LayoutStyle.RELATED, 215, Short.MAX_VALUE) .add(layout.createParallelGroup(org.jdesktop.layout.GroupLayout.TRAILING) .add(jButton_replaceAll) .add(jButton_cancel))) .add(layout.createSequentialGroup() .add(layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING, false) .add(layout.createSequentialGroup() .add(jLabel2, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, 68, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE) .addPreferredGap(org.jdesktop.layout.LayoutStyle.UNRELATED) .add(jTextField_replace)) .add(layout.createSequentialGroup() .add(jLabel1, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, 76, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE) .addPreferredGap(org.jdesktop.layout.LayoutStyle.RELATED) .add(jTextField_find, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, 178, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE))) .addPreferredGap(org.jdesktop.layout.LayoutStyle.RELATED, 30, Short.MAX_VALUE) .add(layout.createParallelGroup(org.jdesktop.layout.GroupLayout.TRAILING) .add(jButton_findNext) .add(jButton_replace)))) .addContainerGap()) ); layout.setVerticalGroup( layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING) .add(layout.createSequentialGroup() .add(18, 18, 18) .add(layout.createParallelGroup(org.jdesktop.layout.GroupLayout.BASELINE) .add(jLabel1) .add(jTextField_find, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE) .add(jButton_findNext)) .addPreferredGap(org.jdesktop.layout.LayoutStyle.RELATED) .add(layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING) .add(jLabel2) .add(jTextField_replace, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE) .add(jButton_replace)) .add(1, 1, 1) .add(layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING) .add(layout.createSequentialGroup() .add(28, 28, 28) .add(jCheckBox_case)) .add(layout.createSequentialGroup() .add(9, 9, 9) .add(jButton_replaceAll) .addPreferredGap(org.jdesktop.layout.LayoutStyle.RELATED) .add(jButton_cancel))) .addContainerGap(20, Short.MAX_VALUE)) ); pack(); }// </editor-fold>//GEN-END:initComponents /* * 查找 */ public void find(String str, int cur) { int i = -1; String textAreaText = textArea.getText(); if(!jCheckBox_case.isSelected()){//如果大小写不敏感 i = textAreaText.toUpperCase().indexOf(str.toUpperCase(),cur); }else{//如果大小写敏感 i = textAreaText.indexOf(str,cur); }if (i >= 0) {textArea.setSelectionStart(i); // 使找到的字符串选中textArea.setSelectionEnd(i + str.length());findIndex = ++i; // 用于查找下一个} else {if(findIndex == 0){return;}else{//查询完毕，重新重头开始查找findIndex = 0;find(str, findIndex);}}} /* * 替换全部 */ int count = 0; public void replaceAll(String fromStr, String toStr, int cur, int end) { if (cur > end) {return;} else {int i = -1;String textAreaText = textArea.getText();if (!jCheckBox_case.isSelected()) {// 如果大小写不敏感i = textAreaText.toUpperCase().indexOf(fromStr.toUpperCase(),cur);} else {i = textAreaText.indexOf(fromStr, cur);}if (i >= 0) {textArea.setSelectionStart(i); // 使找到的字符串反白选中textArea.setSelectionEnd(i + fromStr.length());textArea.replaceSelection(toStr); // 替换cur = ++i;count++;} else {JOptionPane.showMessageDialog(this, " 替换完毕，共替换 " + count + " 处！");return;}replaceAll(fromStr, toStr, cur, end); // 递归查找与替换}} private void close(){ this.dispose(); }}?
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