Java 使用kit.insertHTML（）更新时，jTextPane中的第一个单词消失

我做了一个拼写检查之类的东西。在此代码中，当用户单击链接时，将显示一个选项列表，当选择某个选项时，超链接中的文本将更新。 我的问题是，当我更新第一个单词时，它就消失了。我正在为它编写一个示例工作代码。“链接”一词是可点击的

import java.awt.ComponentOrientation;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.IOException;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.swing.JEditorPane;
import javax.swing.JMenuItem;
import javax.swing.JPopupMenu;
import javax.swing.event.HyperlinkEvent;
import javax.swing.text.BadLocationException;
import javax.swing.text.html.HTML;
import javax.swing.text.html.HTMLDocument;
import javax.swing.text.html.HTMLEditorKit;

public class TextPaneTesting1 extends javax.swing.JFrame {

    /**
     * Creates new form TextPaneTesting
     */
    static HTMLEditorKit kit = new HTMLEditorKit();
    static HTMLDocument doc = new HTMLDocument();
    static String mainText;

    public TextPaneTesting1() throws IOException {
        initComponents();
        jTextPane1.setEditorKit(kit);
        jTextPane1.setDocument(doc);
        mainText = "<a href = '#'>Link</a> NotLink <a href = '#'>Link</a> NotLink <a href = '#'>Link</a>.";
        jTextPane1.setEditable(false);
        jTextPane1.setText(mainText);
        jTextPane1.setCaretPosition(0);
    }

    /**
     * This method is called from within the constructor to initialize the form.
     * WARNING: Do NOT modify this code. The content of this method is always
     * regenerated by the Form Editor.
     */
    @SuppressWarnings("unchecked")
    // <editor-fold defaultstate="collapsed" desc="Generated Code">                          
    private void initComponents() {

        jScrollPane1 = new javax.swing.JScrollPane();
        jTextPane1 = new javax.swing.JTextPane();

        setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);

        jTextPane1.setContentType("text/UTF-8"); // NOI18N
        jTextPane1.setFont(new java.awt.Font("Tahoma", 0, 18)); // NOI18N
        jTextPane1.addHyperlinkListener(new javax.swing.event.HyperlinkListener() {
            public void hyperlinkUpdate(javax.swing.event.HyperlinkEvent evt) {
                jTextPane1HyperlinkUpdate(evt);
            }
        });
        jScrollPane1.setViewportView(jTextPane1);

        javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
        getContentPane().setLayout(layout);
        layout.setHorizontalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addComponent(jScrollPane1, javax.swing.GroupLayout.Alignment.TRAILING, javax.swing.GroupLayout.DEFAULT_SIZE, 613, Short.MAX_VALUE)
        );
        layout.setVerticalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addComponent(jScrollPane1, javax.swing.GroupLayout.DEFAULT_SIZE, 300, Short.MAX_VALUE)
        );

        pack();
    }// </editor-fold>                        

    private void jTextPane1HyperlinkUpdate(javax.swing.event.HyperlinkEvent evt) {                                           
        if(evt.getEventType() == HyperlinkEvent.EventType.ACTIVATED){
            int begin = evt.getSourceElement().getStartOffset();
            int end = evt.getSourceElement().getEndOffset();
            popup = new JPopupMenu();
            JMenuItem listOption = new JMenuItem("Click It");
            listOption.setFont(new java.awt.Font("Tahoma", java.awt.Font.PLAIN, 12));
            listOption.addActionListener(new ActionListener() { 
                public void actionPerformed(ActionEvent evt) {
                    try {
                        updateText(begin, end);
                    } catch (IOException ex) {
                        Logger.getLogger(TextPaneTesting1.class.getName()).log(Level.SEVERE, null, ex);
                    }
                }
            });
            popup.add(listOption);
            popup.show(jTextPane1, jTextPane1.getMousePosition().x, jTextPane1.getMousePosition().y);
        }
    }                                          

    static void updateText(int begin, int end) throws IOException{
        try {
            doc.remove(begin, end - begin);
            String replaced = "<a href = '#'>Replaced</a>";
            kit.insertHTML((HTMLDocument) doc, begin, replaced, 0, 0, HTML.Tag.A);
        } catch (BadLocationException ex) {
            Logger.getLogger(TextPaneTesting1.class.getName()).log(Level.SEVERE, null, ex);
        }
    }

    /**
     * @param args the command line arguments
     */
    public static void main(String args[]) {
        /* Set the Nimbus look and feel */
        //<editor-fold defaultstate="collapsed" desc=" Look and feel setting code (optional) ">
        /* If Nimbus (introduced in Java SE 6) is not available, stay with the default look and feel.
         * For details see http://download.oracle.com/javase/tutorial/uiswing/lookandfeel/plaf.html 
         */
        try {
            for (javax.swing.UIManager.LookAndFeelInfo info : javax.swing.UIManager.getInstalledLookAndFeels()) {
                if ("Nimbus".equals(info.getName())) {
                    javax.swing.UIManager.setLookAndFeel(info.getClassName());
                    break;
                }
            }
        } catch (ClassNotFoundException ex) {
            java.util.logging.Logger.getLogger(TextPaneTesting1.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        } catch (InstantiationException ex) {
            java.util.logging.Logger.getLogger(TextPaneTesting1.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        } catch (IllegalAccessException ex) {
            java.util.logging.Logger.getLogger(TextPaneTesting1.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        } catch (javax.swing.UnsupportedLookAndFeelException ex) {
            java.util.logging.Logger.getLogger(TextPaneTesting1.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        }
        //</editor-fold>

        /* Create and display the form */
        java.awt.EventQueue.invokeLater(new Runnable() {
            public void run() {
                try {
                    new TextPaneTesting1().setVisible(true);
                } catch (IOException ex) {
                    Logger.getLogger(TextPaneTesting1.class.getName()).log(Level.SEVERE, null, ex);
                }
            }
        });
    }

    // Variables declaration - do not modify                     
    private javax.swing.JScrollPane jScrollPane1;
    private static javax.swing.JTextPane jTextPane1;
    // End of variables declaration                   
    private javax.swing.JPopupMenu popup;
}

导入java.awt.ComponentOrientation；
导入java.awt.event.ActionEvent；
导入java.awt.event.ActionListener；
导入java.io.IOException；
导入java.util.logging.Level；
导入java.util.logging.Logger；
导入javax.swing.JEditorPane；
导入javax.swing.JMenuItem；
导入javax.swing.jpopmenu；
导入javax.swing.event.HyperlinkEvent；
导入javax.swing.text.BadLocationException；
导入javax.swing.text.html.html；
导入javax.swing.text.html.HTMLDocument；
导入javax.swing.text.html.HTMLEditorKit；
公共类TextPaneTesting1扩展了javax.swing.JFrame{
/**
*创建新表单TextPaneTesting
*/
静态HTMLEditorKit=新的HTMLEditorKit（）；
静态HTMLDocument doc=新的HTMLDocument（）；
静态字符串主文本；
public TextPaneTesting1（）引发IOException{
初始化组件（）；
jTextPane1.setEditorKit（工具包）；
jTextPane1.setDocument（doc）；
mainText=“NotLink NotLink。”；
jTextPane1.setEditable（false）；
jTextPane1.setText（主文本）；
jTextPane1.setCaretPosition（0）；
}
/**
*从构造函数中调用此方法来初始化表单。
*警告：不要修改此代码。此方法的内容始终为
*由表单编辑器重新生成。
*/
@抑制警告（“未选中”）
//                           
私有组件（）{
jScrollPane1=newjavax.swing.JScrollPane（）；
jTextPane1=newjavax.swing.JTextPane（）；
setDefaultCloseOperation（javax.swing.WindowConstants.EXIT_ON_CLOSE）；
jTextPane1.setContentType（“text/UTF-8”）；//NOI18N
jTextPane1.setFont（新的java.awt.Font（“Tahoma”，0，18））；//NOI18N
jTextPane1.addHyperlinkListener（新的javax.swing.event.HyperlinkListener（）{
public void hyperlinkUpdate（javax.swing.event.HyperlinkEvent evt）{
jTextPane1HyperlinkUpdate（evt）；
}
});
jScrollPane1.setViewportView（jTextPane1）；
javax.swing.GroupLayout=newjavax.swing.GroupLayout（getContentPane（））；
getContentPane（）.setLayout（布局）；
layout.setHorizontalGroup(
createParallelGroup（javax.swing.GroupLayout.Alignment.LEADING）
.addComponent（jScrollPane1，javax.swing.GroupLayout.Alignment.TRAILING，javax.swing.GroupLayout.DEFAULT_SIZE，613，Short.MAX_值）
);
layout.setVerticalGroup(
createParallelGroup（javax.swing.GroupLayout.Alignment.LEADING）
.addComponent（jScrollPane1，javax.swing.GroupLayout.DEFAULT\u SIZE，300，Short.MAX\u值）
);
包装（）；
}//                         
私有void jTextPane1HyperlinkUpdate（javax.swing.event.HyperlinkEvent evt）{
if（evt.getEventType（）==HyperlinkEvent.EventType.ACTIVATED）{
int begin=evt.getSourceElement（）.getStartOffset（）；
int end=evt.getSourceElement（）.getEndOffset（）；
popup=new JPopupMenu（）；
JMenuItem listOption=新建JMenuItem（“单击它”）；
setFont（新的java.awt.Font（“Tahoma”，java.awt.Font.PLAIN，12））；
listOption.addActionListener（新ActionListener（）{
已执行的公共无效操作（操作事件evt）{
试一试{
updateText（开始、结束）；
}捕获（IOEX异常）{
Logger.getLogger（TextPaneTesting1.class.getName（））.log（Level.SEVERE，null，ex）；
}
}
});
添加（列表选项）；
show（jTextPane1，jTextPane1.getMousePosition（）.x，jTextPane1.getMousePosition（）.y）；
}
}                                          
静态void updateText（int begin，int end）引发IOException{
试一试{
单据删除（开始，结束-开始）；
字符串“”替换；
insertHTML（（HTMLDocument）文档，开始，替换，0，0，HTML.Tag.A）；
}捕获（BadLocationException ex）{
Logger.getLogger（TextPaneTesting1.class.getName（））.log（Level.SEVERE，null，ex）；
}
}
/**
*@param指定命令行参数
*/
公共静态void main（字符串参数[]）{
/*设置Nimbus的外观和感觉*/
//
/*如果Nimbus（在JavaSE6中引入）不可用，请使用默认的外观。
*详情请参阅http://download.oracle.com/javase/tutorial/uiswing/lookandfeel/plaf.html 
*/
试一试{
for（javax.swing.UIManager.LookAndFeelInfo:javax.swing.UIManager.getInstalledLookAndFeels（））{
if（“Nimbus”.equals（info.getName（）））{
setLookAndFeel（info.getClassName（））；
打破
}
}
}捕获（ClassNotFoundException ex）{
java.util.logging.Logger.getLogger（TextPaneTesting1.class.getName（））.log（java.util.logging.Level.SEVERE，null，ex）；
}catch（实例化异常）{
java.util.logging.Logger.getLogger（TextPaneTesting1.class.getName（））.log（java.util.logging.Level.SEVERE，null，ex）；
}捕获（非法访问例外）{
java.util.logging.Logger.getLogger（TextPaneTesting1.class.getName（））.log（java.util.logging.Level.SEVERE，null，ex）；
}catch（javax.swing.UnsupportedLookAndFeelException ex）{
java.util.logging.Logger.getLogger（TextPaneTesting1.class.getName（））.log（java.util.logging.Level.SEVERE，null，ex）；
}
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.IOException;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.swing.JMenuItem;
import javax.swing.JPopupMenu;
import javax.swing.event.HyperlinkEvent;
import javax.swing.text.BadLocationException;
import javax.swing.text.Element;
import javax.swing.text.html.HTMLDocument;
import javax.swing.text.html.HTMLEditorKit;

public class TextPaneTesting1 extends javax.swing.JFrame {

    /**
     * Creates new form TextPaneTesting
     */
    static HTMLEditorKit kit = new HTMLEditorKit();
    static HTMLDocument doc = new HTMLDocument();
    static String mainText;

    public TextPaneTesting1() throws IOException {
        initComponents();
        jTextPane1.setEditorKit(kit);
        doc=(HTMLDocument)jTextPane1.getDocument();
        mainText = "<a href = '#'>Link</a> NotLink <a href = '#'>Link</a> NotLink <a href = '#'>Link</a>.";
        jTextPane1.setEditable(false);
        jTextPane1.setText(mainText);
        jTextPane1.setCaretPosition(0);
    }

    /**
     * This method is called from within the constructor to initialize the form.
     * WARNING: Do NOT modify this code. The content of this method is always
     * regenerated by the Form Editor.
     */
    @SuppressWarnings("unchecked")
    // <editor-fold defaultstate="collapsed" desc="Generated Code">                          
    private void initComponents() {

        jScrollPane1 = new javax.swing.JScrollPane();
        jTextPane1 = new javax.swing.JTextPane();

        setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);

        jTextPane1.setContentType("text/UTF-8"); // NOI18N
        jTextPane1.setFont(new java.awt.Font("Tahoma", 0, 18)); // NOI18N
        jTextPane1.addHyperlinkListener(new javax.swing.event.HyperlinkListener() {
            public void hyperlinkUpdate(javax.swing.event.HyperlinkEvent evt) {
                jTextPane1HyperlinkUpdate(evt);
            }
        });
        jScrollPane1.setViewportView(jTextPane1);

        javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
        getContentPane().setLayout(layout);
        layout.setHorizontalGroup(
                layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                        .addComponent(jScrollPane1, javax.swing.GroupLayout.Alignment.TRAILING, javax.swing.GroupLayout.DEFAULT_SIZE, 613, Short.MAX_VALUE)
        );
        layout.setVerticalGroup(
                layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                        .addComponent(jScrollPane1, javax.swing.GroupLayout.DEFAULT_SIZE, 300, Short.MAX_VALUE)
        );

        pack();
    }// </editor-fold>                        

    private void jTextPane1HyperlinkUpdate(final javax.swing.event.HyperlinkEvent event) {
        if(event.getEventType() == HyperlinkEvent.EventType.ACTIVATED){
            popup = new JPopupMenu();
            JMenuItem listOption = new JMenuItem("Click It");
            listOption.setFont(new java.awt.Font("Tahoma", java.awt.Font.PLAIN, 12));
            listOption.addActionListener(new ActionListener() {
                public void actionPerformed(ActionEvent evt) {
                    try {
                        updateText(event.getSourceElement());
                    } catch (IOException ex) {
                        Logger.getLogger(TextPaneTesting1.class.getName()).log(Level.SEVERE, null, ex);
                    }
                }
            });
            popup.add(listOption);
            popup.show(jTextPane1, jTextPane1.getMousePosition().x, jTextPane1.getMousePosition().y);
        }
    }

    static void updateText(Element elem) throws IOException{
        try {
            final int begin = elem.getStartOffset();
            final int end = elem.getEndOffset();

            String replaced = "<a href = '#'>Replaced</a>";

            doc.insertBeforeStart(elem, replaced);
            doc.remove(begin+"Replaced".length(), end - begin);
        } catch (BadLocationException ex) {
            Logger.getLogger(TextPaneTesting1.class.getName()).log(Level.SEVERE, null, ex);
        }
    }

    /**
     * @param args the command line arguments
     */
    public static void main(String args[]) {
        /* Set the Nimbus look and feel */
        //<editor-fold defaultstate="collapsed" desc=" Look and feel setting code (optional) ">
        /* If Nimbus (introduced in Java SE 6) is not available, stay with the default look and feel.
         * For details see http://download.oracle.com/javase/tutorial/uiswing/lookandfeel/plaf.html 
         */
        try {
            for (javax.swing.UIManager.LookAndFeelInfo info : javax.swing.UIManager.getInstalledLookAndFeels()) {
                if ("Nimbus".equals(info.getName())) {
                    javax.swing.UIManager.setLookAndFeel(info.getClassName());
                    break;
                }
            }
        } catch (ClassNotFoundException ex) {
            java.util.logging.Logger.getLogger(TextPaneTesting1.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        } catch (InstantiationException ex) {
            java.util.logging.Logger.getLogger(TextPaneTesting1.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        } catch (IllegalAccessException ex) {
            java.util.logging.Logger.getLogger(TextPaneTesting1.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        } catch (javax.swing.UnsupportedLookAndFeelException ex) {
            java.util.logging.Logger.getLogger(TextPaneTesting1.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        }
        //</editor-fold>

        /* Create and display the form */
        java.awt.EventQueue.invokeLater(new Runnable() {
            public void run() {
                try {
                    new TextPaneTesting1().setVisible(true);
                } catch (IOException ex) {
                    Logger.getLogger(TextPaneTesting1.class.getName()).log(Level.SEVERE, null, ex);
                }
            }
        });
    }

    // Variables declaration - do not modify                     
    private javax.swing.JScrollPane jScrollPane1;
    private static javax.swing.JTextPane jTextPane1;
    // End of variables declaration                   
    private javax.swing.JPopupMenu popup;
}