我目前正在编写一个程序，该程序接受 a 中的样式文本，JTextPane并在不可编辑中显示相同的样式文本JTextPane.问题是我实际上想在输入和显示之间解析文档。基本上我希望能够DefaultStyledDocument在保持格式的同时将 a 拆分为两个文档。我怎样才能做到这一点？
SSCE 说明点：
import java.awt.Color;
import javax.swing.text.DefaultStyledDocument;
import javax.swing.text.SimpleAttributeSet;
import javax.swing.text.StyleConstants;
public class SSCCE extends javax.swing.JFrame {
public SSCCE() {
initComponents();
try {
DefaultStyledDocument doc = new DefaultStyledDocument();
SimpleAttributeSet attr = new SimpleAttributeSet();
StyleConstants.setBold(attr, true);
doc.insertString(0, "This is bold.\n\n", attr);
StyleConstants.setItalic(attr, true);
doc.insertString(doc.getLength() - 1, "This is bold and italicized.\n", attr);
doc.insertString(doc.getLength() - 1, "--\n", null); //This is a delimeter, for splitting the doucment
StyleConstants.setBold(attr, false);
StyleConstants.setForeground(attr, Color.red);
doc.insertString(doc.getLength() - 1, "This is italicized and red.\n", attr);
StyleConstants.setBold(attr, true);
StyleConstants.setItalic(attr, false);
doc.insertString(doc.getLength() -1 , "This is bold and red.\n", attr);
txpInput.setDocument(doc); //txpInput is a JTextPane
} catch (Exception e) {
e.printStackTrace();
}
}
@SuppressWarnings("unchecked")
private void initComponents() {
jScrollPane1 = new javax.swing.JScrollPane();
jPanel1 = new javax.swing.JPanel();
jScrollPane2 = new javax.swing.JScrollPane();
txpInput = new javax.swing.JTextPane();
jScrollPane3 = new javax.swing.JScrollPane();
txpOutput1 = new javax.swing.JTextPane();
jLabel1 = new javax.swing.JLabel();
btnOutput = new javax.swing.JButton();
jScrollPane4 = new javax.swing.JScrollPane();
txpOutput2 = new javax.swing.JTextPane();
setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
jScrollPane2.setViewportView(txpInput);
txpOutput1.setEditable(false);
jScrollPane3.setViewportView(txpOutput1);
jLabel1.setText("Output:");
btnOutput.setText("Output");
btnOutput.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
btnOutputActionPerformed(evt);
}
});
txpOutput2.setEditable(false);
jScrollPane4.setViewportView(txpOutput2);
javax.swing.GroupLayout jPanel1Layout = new javax.swing.GroupLayout(jPanel1);
jPanel1.setLayout(jPanel1Layout);
jPanel1Layout.setHorizontalGroup(
jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(jPanel1Layout.createSequentialGroup()
.addContainerGap()
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jScrollPane3, javax.swing.GroupLayout.Alignment.TRAILING)
.addComponent(jLabel1, javax.swing.GroupLayout.Alignment.TRAILING, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addComponent(jScrollPane2)
.addGroup(jPanel1Layout.createSequentialGroup()
.addComponent(btnOutput, javax.swing.GroupLayout.PREFERRED_SIZE, 174, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGap(0, 462, Short.MAX_VALUE))
.addComponent(jScrollPane4))
.addContainerGap())
);
jPanel1Layout.setVerticalGroup(
jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(jPanel1Layout.createSequentialGroup()
.addContainerGap()
.addComponent(jScrollPane2, javax.swing.GroupLayout.PREFERRED_SIZE, 105, javax.swing.GroupLayout.PREFERRED_SIZE)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(jLabel1)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(btnOutput)
.addGap(9, 9, 9)
.addComponent(jScrollPane3, javax.swing.GroupLayout.PREFERRED_SIZE, 135, javax.swing.GroupLayout.PREFERRED_SIZE)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(jScrollPane4, javax.swing.GroupLayout.PREFERRED_SIZE, 135, javax.swing.GroupLayout.PREFERRED_SIZE)
.addContainerGap(79, Short.MAX_VALUE))
);
jScrollPane1.setViewportView(jPanel1);
javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
getContentPane().setLayout(layout);
layout.setHorizontalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jScrollPane1)
);
layout.setVerticalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jScrollPane1)
);
pack();
}
private void btnOutputActionPerformed(java.awt.event.ActionEvent evt) {
//Comment out the body of this method to get code to run
//This needs to parse the text and output it to the two output JTextPanes
DefaultStyledDocument inputDoc = (DefaultStyledDocument) txpInput.getDocument();
DefaultStyledDocument[] output = inputDoc.split("--"); //Invalid, is there an equivalent
txpOutput1.setDocument(ouput[0]);
txpOutput2.setDocument(ouput[1]);
this.validate();
this.repaint();
}
public static void main(String args[]) {
/* Set the Nimbus look and feel */
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(SSCCE.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (InstantiationException ex) {
java.util.logging.Logger.getLogger(SSCCE.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (IllegalAccessException ex) {
java.util.logging.Logger.getLogger(SSCCE.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (javax.swing.UnsupportedLookAndFeelException ex) {
java.util.logging.Logger.getLogger(SSCCE.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
}
/* Create and display the form */
java.awt.EventQueue.invokeLater(new Runnable() {
public void run() {
new SSCCE().setVisible(true);
}
});
}
// Variables declaration - do not modify
private javax.swing.JButton btnOutput;
private javax.swing.JLabel jLabel1;
private javax.swing.JPanel jPanel1;
private javax.swing.JScrollPane jScrollPane1;
private javax.swing.JScrollPane jScrollPane2;
private javax.swing.JScrollPane jScrollPane3;
private javax.swing.JScrollPane jScrollPane4;
private javax.swing.JTextPane txpInput;
private javax.swing.JTextPane txpOutput1;
private javax.swing.JTextPane txpOutput2;
// End of variables declaration
}
注意：我使用 Netbeans GUI 构建器，因此生成的代码很长。
基本上，在示例中，我在 input 中输入了一些格式化文本JTextPane。然后我希望能够将该格式化文本拆分到两个输出窗格中，而不会丢失格式。在 SCCE 中，当用户按下“输出”按钮时，应复制数据，并按--行拆分。在示例中，我使用了一种不存在的split()方法，但我认为它明白了这一点。
这是预期的输入（对于这个特定的例子）：
这是预期的输出：
我原本以为这个问题有一个可能的答案。但我试过了，发现它不起作用。最后，如何在保持样式的同时拆分样式文档。