在HTML样式的JtextPane的文本中将所选单词设为粗体? | 在HTML样式的JtextPane的文本中将所选单词设为粗体

本文介绍了在HTML样式的JtextPane的文本中将所选单词设为粗体?的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！

问题描述

如何从JTextPane获取文本中的所选单词，然后使用Ctrl+B快捷键将Bold属性应用于所选文本.

How can I get the selected word in the text from a JTextPane and then apply the Bold property for the selected-text by using the Ctrl+B Short Cut.

字符串从xml文件提供给JTextpane.字符串是从标记元素获取的，并设置为JTextpane:

String are given to the JTextpane from the xml files. String are get from the tag elements and set to the JTextpane:

String selectedText = ta_textpane.getSelectedText();
int getselectedtextstart = ta_textpane.getSelectionStart();
int getselectedtextend = ta_textpane.getSelectionEnd();

String textbef = text.substring(0, getselectedtextstart);
String textaft = text.substring(getselectedtextend, text.length());
String textinbet = "<b>" + text.substring(getselectedtextstart,getselectedtextend) + "</b>";

String settoxmlfiletag = textbef + textinbet + textaft

在连接bold(<b>)之后，将加粗的字符串写入xml标记.我在获取最后一个索引位置和第一个索引位置时遇到问题，因为我在JTextPane

After concat the bold(<b>), write the bolded string to the xml tag. i have a Problem in getting the last index position and first index position because i use the tamil language in the JTextPane

已应用粗体，但无法将其应用在正确的位置.

Bold is applied but cannot be applied in the correct position.

推荐答案

一个好的解决方案是使用HTMLEditorKit中的insertHTML()方法:

A good solution is to use the insertHTML() method from HTMLEditorKit:

public class Bold extends JTextPane {

    public Bold(){
        super();

        setEditorKit(new HTMLEditorKit());
        setText("<html><h1>Example</h1><p>Just a test</p></html>");
        getInputMap().put(KeyStroke.getKeyStroke(KeyEvent.VK_B, KeyEvent.CTRL_MASK), "bold");
        getActionMap().put("bold", new AbstractAction(){

            @Override
            public void actionPerformed(ActionEvent e) {
                JTextPane bold = (JTextPane) e.getSource();
                int start = bold.getSelectionStart();
                int end = bold.getSelectionEnd();
                String txt = bold.getSelectedText();
                if(end != start)
                    try {
                        bold.getDocument().remove(start, end-start);
                        HTMLEditorKit htmlkit = (HTMLEditorKit) bold.getEditorKit();
                        htmlkit.insertHTML((HTMLDocument) bold.getDocument(), start, "<b>"+txt+"</b>", 0, 0, HTML.Tag.B);
                    } catch (Exception e1) {
                        e1.printStackTrace();
                    }
            }

        });
    }

    public static void main(String[] args){
        SwingUtilities.invokeLater(()->{
            JFrame f = new JFrame();
            f.setContentPane(new Bold());
            f.setPreferredSize(new Dimension(640,480));
            f.pack();
            f.setVisible(true);
        });
    }
}

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