如何打印選定的行JTable

Question

我嘗試使用主JTable的選定行和相同的頭和單元格渲染執行臨時JTable，但是當我嘗試打印它時，我只是得到一個帶有行邊框的空矩形，I在How to print out specific rows/columns of a JTable?看到使用矩形和小區邊界的另一種方式，但我不明白，我需要一些幫助，以使其更清晰

Answer 1

似乎工作沒關係，我...

import java.awt.BorderLayout; 
import java.awt.EventQueue; 
import java.awt.event.ActionEvent; 
import java.awt.event.ActionListener; 
import java.awt.print.PrinterException; 
import java.util.Vector; 
import java.util.logging.Level; 
import java.util.logging.Logger; 
import javax.swing.JButton; 
import javax.swing.JFrame; 
import javax.swing.JScrollPane; 
import javax.swing.JTable; 
import javax.swing.UIManager; 
import javax.swing.UnsupportedLookAndFeelException; 
import javax.swing.table.DefaultTableModel; 
import javax.swing.table.JTableHeader; 

public class TestPrint { 

    public static void main(String[] args) { 
     new TestPrint(); 
    } 

    public TestPrint() { 
     EventQueue.invokeLater(new Runnable() { 
      @Override 
      public void run() { 
       try { 
        UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName()); 
       } catch (ClassNotFoundException | InstantiationException | IllegalAccessException | UnsupportedLookAndFeelException ex) { 
        ex.printStackTrace(); 
       } 

       DefaultTableModel model = new DefaultTableModel(0, 26); 
       for (int row = 0; row < 26; row++) { 
        Vector data = new Vector(26); 
        for (int col = 0; col < 26; col++) { 

         String value = row + "x" + ((char) (col + 'A')); 
         data.add(value); 

        } 
        model.addRow(data); 
       } 

       JTable table = new JTable(model); 

       JButton print = new JButton("Print"); 
       print.addActionListener(new ActionListener() { 
        @Override 
        public void actionPerformed(ActionEvent e) { 
         try { 
          DefaultTableModel viewModel = (DefaultTableModel) table.getModel(); 
          DefaultTableModel printModel = new DefaultTableModel(0, viewModel.getColumnCount()); 
          for (int row : table.getSelectedRows()) { 
           printModel.addRow((Vector) viewModel.getDataVector().get(row)); 
          } 
          JTable toPrint = new JTable(printModel); 
          toPrint.setSize(toPrint.getPreferredSize()); 
          JTableHeader tableHeader = toPrint.getTableHeader(); 
          tableHeader.setSize(tableHeader.getPreferredSize()); 
          toPrint.print(JTable.PrintMode.FIT_WIDTH); 
         } catch (PrinterException ex) { 
          ex.printStackTrace(); 
         } 
        } 
       }); 

       JFrame frame = new JFrame("Testing"); 
       frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); 
       frame.add(new JScrollPane(table)); 
       frame.add(print, BorderLayout.SOUTH); 
       frame.pack(); 
       frame.setLocationRelativeTo(null); 
       frame.setVisible(true); 
      } 
     }); 
    } 

}