将选定的JFrame组件打印到打印机

我有这个用Java开发的应用程序。

我想只打印一些组件，例如“客户名称”，“表格”和“日期”。

我已经完成了这个例子，但我无法正确打印。

Answer 1

花了几分钟阅读如何使用表格/打印 ，可以让你产生类似于这个例子的东西……

印刷输出……

屏幕输出……

 import java.awt.EventQueue; import java.awt.GridBagConstraints; import java.awt.GridBagLayout; import java.awt.HeadlessException; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.awt.print.PrinterException; import java.text.MessageFormat; import java.text.SimpleDateFormat; import java.util.Calendar; import java.util.Date; 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.JLabel; import javax.swing.JPanel; import javax.swing.JScrollPane; import javax.swing.JSpinner; import javax.swing.JTable; import javax.swing.JTextField; import javax.swing.SpinnerDateModel; import javax.swing.SpinnerModel; import javax.swing.UIManager; import javax.swing.UnsupportedLookAndFeelException; import javax.swing.table.DefaultTableModel; public class CopyTable { public static void main(String[] args) { new CopyTable(); } public CopyTable() { EventQueue.invokeLater(new Runnable() { @Override public void run() { try { UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName()); } catch (ClassNotFoundException | InstantiationException | IllegalAccessException | UnsupportedLookAndFeelException ex) { ex.printStackTrace(); } JFrame frame = new JFrame("Testing"); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); frame.add(new TestPane()); frame.pack(); frame.setLocationRelativeTo(null); frame.setVisible(true); } }); } public class TestPane extends JPanel { private JTable table; private JTextField customer; private JSpinner date; public TestPane() { DefaultTableModel model = new DefaultTableModel(); for (int index = 0; index < 26; index++) { model.addColumn((char) (index + 65)); } for (int row = 0; row < 26; row++) { Vector rowData = new Vector(); for (int col = 0; col < 26; col++) { rowData.add(row + "x" + col); } model.addRow(rowData); } table = new JTable(model); Calendar calendar = Calendar.getInstance(); Date initDate = calendar.getTime(); Date earliestDate = calendar.getTime(); calendar.add(Calendar.YEAR, 200); Date latestDate = calendar.getTime(); SpinnerModel spinnerModel = new SpinnerDateModel( initDate, earliestDate, latestDate, Calendar.YEAR); date = new JSpinner(); date.setModel(spinnerModel); date.setEditor(new JSpinner.DateEditor(date, "dd/MM/yyyy")); customer = new JTextField(10); setLayout(new GridBagLayout()); GridBagConstraints gbc = new GridBagConstraints(); gbc.gridx = 0; gbc.gridy = 0; add(new JLabel("Customer:"), gbc); gbc.gridy++; add(new JLabel("Date:"), gbc); gbc.gridy = 0; gbc.gridx++; gbc.weightx = 1; gbc.anchor = GridBagConstraints.WEST; add(customer, gbc); gbc.gridy++; add(date, gbc); gbc.gridx = 0; gbc.gridy++; gbc.gridwidth = GridBagConstraints.REMAINDER; gbc.fill = GridBagConstraints.BOTH; add(new JScrollPane(table), gbc); gbc.gridx = 0; gbc.fill = GridBagConstraints.NONE; gbc.gridy++; gbc.gridwidth = GridBagConstraints.REMAINDER; gbc.anchor = GridBagConstraints.CENTER; JButton print = new JButton("Print"); add(print, gbc); print.addActionListener(new ActionListener() { @Override public void actionPerformed(ActionEvent e) { MessageFormat header = new MessageFormat("Customer: " + customer.getText() + " | Date: " + new SimpleDateFormat("dd/MM/yyyy").format(date.getValue())); try { table.print(JTable.PrintMode.FIT_WIDTH, header, null, true, null, true); } catch (PrinterException ex) { ex.printStackTrace(); } } }); } } }