查找/替换突出显示替换的单词Netbeans/Java
如何在JTextpane中突出显示替换的单词。我尝试了许多选项,但最接近的是,只有单词的第一个出现被突出显示,其他突出显示被移动。我使用了下面的方法。我已经用它来查找和突出单词了。所以我想,如果我能对它稍加修改,我也可以将它用于查找和替换方法。谢谢查找/替换突出显示替换的单词Netbeans/Java,java,swing,netbeans,Java,Swing,Netbeans,如何在JTextpane中突出显示替换的单词。我尝试了许多选项,但最接近的是,只有单词的第一个出现被突出显示,其他突出显示被移动。我使用了下面的方法。我已经用它来查找和突出单词了。所以我想,如果我能对它稍加修改,我也可以将它用于查找和替换方法。谢谢 Highlighter.HighlightPainter PaintChange = new PaintFind(Color.yellow); try { Highlighter color = textpane.g
Highlighter.HighlightPainter PaintChange = new PaintFind(Color.yellow);
try {
Highlighter color = textpane.getHighlighter();
String find = FieldFind.getText();
String replace = FieldReplace.getText();
Document doc = textpane.getDocument();
String text = doc.getText(0, doc.getLength());
int pos = 0;
int counter = 0;
while((pos=text.toUpperCase().indexOf(find.toUpperCase(), pos))>=0) {
int i = textpane.getText().indexOf(find, 0);
textpane.select(i, i+find.length());
text.replaceSelection(FieldReplace.getText());
color.addHighlight(pos, pos+replace.length(), PaintFind);
pos += find.length();
counter++;
}
status.setText("Nuber of changed words: " + " " + Integer.toString(counter));
} catch(Exception e){
}
我得到的最接近的结果是,只有单词的第一次出现被突出显示,其他突出显示被移动
不要使用textPane()getText()
。这将在文本中包含“\r\n”。但是,文档只有“\n”,因此用于突出显示的索引将每增加一行关闭一个
您已经使用以下命令从数据文档中获取了文本:
String text = doc.getText(0, doc.getLength());
所以只需搜索“text”变量
查看更多详细信息
编辑:
请注意,这不是一个非常有效的解决方案,因为每次进行更改时都需要从文档中获取文本,以确保搜索文本字符串时的偏移量与文档中的文本同步
编辑2:
使用文档中的初始文本字符串的更高效的查找/替换算法:
findReplace.addActionListener( new ActionListener()
{
@Override
public void actionPerformed(ActionEvent e)
{
try
{
textPane.getHighlighter().removeAllHighlights();
String findText = find.getText();
int findLength = findText.length();
String replaceText = replace.getText();
int replaceLength = replaceText.length();
Document doc = textPane.getDocument();
String text = doc.getText(0, doc.getLength());
int count = 0;
int offset = 0;
while ((offset = text.indexOf(findText, offset)) != -1)
{
int replaceOffset = offset + ((replaceLength - findLength) * count);
textPane.select(replaceOffset, replaceOffset + findLength);
textPane.replaceSelection( replaceText );
textPane.getHighlighter().addHighlight(replaceOffset, replaceOffset + replaceLength, painter);
offset += replaceLength;
//text = doc.getText(0, doc.getLength());
count++;
}
}
catch(BadLocationException ble) {}
}
});
如果我放置“text”变量而不是textpane.getText(),则只替换并突出显示第一个单词。我认为最主要的是pos变量,它在while循环中增加。我尝试了许多选择,但没有成功。并且不太理解“搜索文本变量”。你能解释一下吗?谢谢,我的意思是你不能使用textPane.getText()进行indexOf(…)搜索,因为你的偏移量会错误,原因我在
文本和新行链接中解释过。因此,您需要搜索文本变量,该变量需要在每次执行替换时在循环中刷新。请参见编辑。。
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.text.*;
public class FindSSCCE extends JPanel
{
JTextField find = new JTextField(10);
JTextField replace = new JTextField(10);
JTextPane textPane = new JTextPane();
Highlighter.HighlightPainter painter = new DefaultHighlighter.DefaultHighlightPainter( Color.cyan );
public FindSSCCE()
{
setLayout( new BorderLayout() );
JPanel north = new JPanel( new GridLayout(0, 2) );
north.add( new JLabel("Find") );
north.add( find );
north.add( new JLabel("Replace") );
north.add( replace );
add(north, BorderLayout.NORTH);
add(new JScrollPane(textPane));
JButton findReplace = new JButton("Find and Replace");
add(findReplace, BorderLayout.SOUTH);
findReplace.addActionListener( new ActionListener()
{
@Override
public void actionPerformed(ActionEvent e)
{
try
{
String findText = find.getText();
int findLength = findText.length();
String replaceText = replace.getText();
int replaceLength = replaceText.length();
Document doc = textPane.getDocument();
String text = doc.getText(0, doc.getLength());
int offset = 0;
while ((offset = text.indexOf(findText, offset)) != -1)
{
textPane.select(offset, offset + findLength);
textPane.replaceSelection( replaceText );
textPane.getHighlighter().addHighlight(offset, offset + replaceLength, painter);
offset += replaceLength;
text = doc.getText(0, doc.getLength());
}
}
catch(BadLocationException ble) {}
}
});
}
private static void createAndShowGUI()
{
JFrame frame = new JFrame("FindSSCCE");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.add( new FindSSCCE() );
frame.setLocationByPlatform( true );
frame.setSize(400, 300);
frame.setVisible( true );
}
public static void main(String[] args)
{
EventQueue.invokeLater(new Runnable()
{
public void run()
{
createAndShowGUI();
}
});
}
}
findReplace.addActionListener( new ActionListener()
{
@Override
public void actionPerformed(ActionEvent e)
{
try
{
textPane.getHighlighter().removeAllHighlights();
String findText = find.getText();
int findLength = findText.length();
String replaceText = replace.getText();
int replaceLength = replaceText.length();
Document doc = textPane.getDocument();
String text = doc.getText(0, doc.getLength());
int count = 0;
int offset = 0;
while ((offset = text.indexOf(findText, offset)) != -1)
{
int replaceOffset = offset + ((replaceLength - findLength) * count);
textPane.select(replaceOffset, replaceOffset + findLength);
textPane.replaceSelection( replaceText );
textPane.getHighlighter().addHighlight(replaceOffset, replaceOffset + replaceLength, painter);
offset += replaceLength;
//text = doc.getText(0, doc.getLength());
count++;
}
}
catch(BadLocationException ble) {}
}
});