swing表格分页,并且可以显示页数和跳转到知道页

以下是一个实现JTable分页，并且可以显示页数和跳转到指定页的示例代码：

import javax.swing.*;
import javax.swing.table.DefaultTableModel;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

public class TablePaginationExample extends JFrame {
    private JTable table;
    private JLabel lblPage;
    private JTextField txtPage;
    private JButton btnPrev;
    private JButton btnNext;
    private JButton btnGo;
    private int currentPage = 1;
    private int totalPage = 1;

    public TablePaginationExample() {
        // 初始化表格
        DefaultTableModel model = new DefaultTableModel(getData(currentPage), getColumnNames());
        table = new JTable(model);
        JScrollPane scrollPane = new JScrollPane(table);

        // 初始化分页按钮
        btnPrev = new JButton("上一页");
        btnNext = new JButton("下一页");
        btnPrev.addActionListener(new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent e) {
                if (currentPage > 1) {
                    currentPage--;
                    refreshTable();
                }
            }
        });
        btnNext.addActionListener(new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent e) {
                if (currentPage < totalPage) {
                    currentPage++;
                    refreshTable();
                }
            }
        });

        // 初始化页数和跳转控件
        lblPage = new JLabel("第1页，共1页");
        txtPage = new JTextField(5);
        txtPage.addActionListener(new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent e) {
                try {
                    int page = Integer.parseInt(txtPage.getText());
                    if (page >= 1 && page <= totalPage) {
                        currentPage = page;
                        refreshTable();
                    }
                } catch (NumberFormatException ex) {
                    // 忽略非数字输入
                }
            }
        });
        btnGo = new JButton("跳转");
        btnGo.addActionListener(new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent e) {
                try {
                    int page = Integer.parseInt(txtPage.getText());
                    if (page >= 1 && page <= totalPage) {
                        currentPage = page;
                        refreshTable();
                    }
                } catch (NumberFormatException ex) {
                    // 忽略非数字输入
                }
            }
        });

        // 添加组件到窗口
        JPanel panel = new JPanel(new BorderLayout());
        panel.add(scrollPane, BorderLayout.CENTER);
        JPanel paginationPanel = new JPanel(new FlowLayout(FlowLayout.RIGHT));
        paginationPanel.add(btnPrev);
        paginationPanel.add(btnNext);
        paginationPanel.add(lblPage);
        paginationPanel.add(txtPage);
        paginationPanel.add(btnGo);
        panel.add(paginationPanel, BorderLayout.SOUTH);
        add(panel);

        // 设置窗口属性
        setTitle("JTable分页示例");
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        setSize(400, 300);
        setLocationRelativeTo(null);
        setVisible(true);
    }

    // 刷新表格数据
    private void refreshTable() {
        DefaultTableModel model = (DefaultTableModel)table.getModel();
        model.setDataVector(getData(currentPage), getColumnNames());
        lblPage.setText(String.format("第%d页，共%d页", currentPage, totalPage));
        txtPage.setText(String.valueOf(currentPage));
    }

    // 获取表格数据
    private Object[][] getData(int page) {
        int pageSize = 10; // 每页显示10行数据
        int start = (page - 1) * pageSize + 1;
        int end = start + pageSize - 1;
        totalPage = 20; // 假设总共有20页数据
        if (end > totalPage * pageSize) {
            end = totalPage * pageSize;
        }
        Object[][] data = new Object[pageSize][3];
        for (int i = start; i <= end; i++) {
            data[i - start][0] = "数据" + i;
            data[i - start][1] = "数据" + i;
            data[i - start][2] = "数据" + i;
        }
        return data;
    }

    // 获取表格列名
    private String[] getColumnNames() {
        String[] columnNames = {"列1", "列2", "列3"};
        return columnNames;
    }

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

在这个示例中，我们添加了一个JLabel来显示当前页码和总页数，以及一个JTextField和一个JButton来实现跳转到指定页码。当用户点击跳转按钮或在JTextField中按下Enter键时，我们尝试将输入的页码转换为数字并进行跳转。注意，为了避免用户输入非数字字符，我们使用了try-catch结构来捕获NumberFormatException异常。