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我正在从中提取数据库记录MySql，我可以使用以下方法执行此操作

private void txt_clientNameKeyReleased(java.awt.event.KeyEvent evt) {                                           

    String sql = "Select client_id as 'Client ID', name_lastName as 'Full Name', case_number as 'Case #', hearing_date as 'Hearing Date', rtc_mtc as 'RTC/MTC', place as 'Place', status as 'Status', note as 'Notes', billing as 'Billed' from hearing_history where name_lastName like '%"+ txt_clientName.getText() +"%' ";

    try{
        if(conn==null){

            conn = ConnectDB.ConDB();
        }else{
            conn = ConnectDB.ConDB();
        }

        pst = conn.prepareStatement(sql);
        rs = pst.executeQuery();

        jTable1.setModel(DbUtils.resultSetToTableModel(rs));            

    }catch(Exception e){
        JOptionPane.showMessageDialog(null, e);
    }finally {
        close();

    }
}

它工作正常，但我有一列应该有多行或包装单词以增加单元格的高度。

我现在使用 java swing 4 个月了，我还没有看到/遇到过高级技巧来操作jtable我希望它执行的操作。

我搜索了这个网站，并从这个链接找到了最短的方法

自动调整 JTable 中的行高

来自 camickr

private void updateRowHeights()
{
try 
{
    for (int row = 0; row < table.getRowCount(); row++)
    {
        int rowHeight = table.getRowHeight();

        for (int column = 0; column < table.getColumnCount(); column++)
        {
            Component comp = table.prepareRenderer(table.getCellRenderer(row, column), row, column);
            rowHeight = Math.max(rowHeight, comp.getPreferredSize().height);
        }

        table.setRowHeight(row, rowHeight);
    }
}
catch(ClassCastException e) {}

}

我认为这确实是一个很好的代码，但我尝试了它，我注意到高度从16（默认行高）增加到20，所以我仍然在单元格中有一行。

我在行后调用了这个方法

        jTable1.setModel(DbUtils.resultSetToTableModel(rs));            
        updateRowHeights();

我将非常感谢任何能让我走上正确轨道以使这项工作为我工作的帮助。

提前致谢..

4

1 回答 1

2

默认渲染器/编辑器不支持多行。您可以尝试使用自定义TableCellEditor/ TableCellRenderer。JTextArea在表格单元格中检查下一个示例：

import java.awt.Component;

import javax.swing.AbstractCellEditor;
import javax.swing.JFrame;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.JTextArea;
import javax.swing.table.TableCellEditor;
import javax.swing.table.TableCellRenderer;

public class TestFrame extends JFrame {

    public TestFrame() {
        init();
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        pack();
        setLocationRelativeTo(null);
        setVisible(true);
    }

    private void init() {
        JTable t = new JTable(new Object[][]{{"a\n\rb","1"},{"a\n\rb","2"}},new Object[]{1,2});

        add(new JScrollPane(t));
        t.getColumnModel().getColumn(0).setCellRenderer(new JTextAreaColumn());
        t.getColumnModel().getColumn(0).setCellEditor(new JTextAreaColumn());
        t.setRowHeight(50);
    }


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


    private class JTextAreaColumn extends AbstractCellEditor implements TableCellRenderer,TableCellEditor {

        private JTextArea area = new JTextArea();
        private JScrollPane pane = new JScrollPane(area);

        @Override
        public Object getCellEditorValue() {
            return area.getText();
        }

        @Override
        public Component getTableCellEditorComponent(JTable table,
                Object value, boolean isSelected, int row, int column) {
            area.setText(value == null ? "" : value.toString());        
            return pane;
        }

        private void setColor(boolean isSelected, JTable table) {
            area.setBackground(isSelected ? table.getSelectionBackground() : table.getBackground());
            area.setForeground(isSelected ? table.getSelectionForeground() : table.getForeground());
        }

        @Override
        public Component getTableCellRendererComponent(JTable table,
                Object value, boolean isSelected, boolean hasFocus, int row,
                int column) {
            area.setText(value == null ? "" : value.toString());
            setColor(isSelected,table);
            return pane;
        }

    }

}

在此处输入图像描述

阅读更多教程

编辑：

接下来试试，看来是你想要的了；

import java.awt.Component;

import javax.swing.AbstractCellEditor;
import javax.swing.JFrame;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.JTextArea;
import javax.swing.event.CellEditorListener;
import javax.swing.event.ChangeEvent;
import javax.swing.table.TableCellEditor;
import javax.swing.table.TableCellRenderer;

public class TestFrame extends JFrame {

    private JTable t;


    public TestFrame() {
        init();
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        pack();
        setLocationRelativeTo(null);
        setVisible(true);
    }

    private void init() {
        t = new JTable(new Object[][]{{"a\n\rb","1"},{"a\n\rb\n\rb\n\rb\n\rb","2"}},new Object[]{1,2});

        add(new JScrollPane(t));
        t.getColumnModel().getColumn(0).setCellRenderer(new JTextAreaColumn());
        JTextAreaColumn editor = new JTextAreaColumn();
        editor.addCellEditorListener(getEditorListener());
        t.getColumnModel().getColumn(0).setCellEditor(editor);
        updateRowHeights(t);
    }

    private CellEditorListener getEditorListener() {
        return new CellEditorListener() {

            @Override
            public void editingStopped(ChangeEvent e) {
                updateRowHeights(t);
            }

            @Override
            public void editingCanceled(ChangeEvent e) {
                updateRowHeights(t);
            }
        };
    }

    private void updateRowHeights(JTable table) {
        try {
            for (int row = 0; row < table.getRowCount(); row++) {
                int rowHeight = table.getRowHeight();

                for (int column = 0; column < table.getColumnCount(); column++) {
                    Component comp = table.prepareRenderer(
                            table.getCellRenderer(row, column), row, column);
                    rowHeight = Math.max(rowHeight,
                            comp.getPreferredSize().height);
                }

                table.setRowHeight(row, rowHeight);
            }
        } catch (ClassCastException e) {
        }
    }

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


    private class JTextAreaColumn extends AbstractCellEditor implements TableCellRenderer,TableCellEditor {

        private JTextArea area = new JTextArea();
        private JScrollPane pane = new JScrollPane(area);

        @Override
        public Object getCellEditorValue() {
            return area.getText();
        }

        @Override
        public Component getTableCellEditorComponent(JTable table,
                Object value, boolean isSelected, int row, int column) {
            area.setText(value == null ? "" : value.toString());        
            return pane;
        }

        private void setColor(boolean isSelected, JTable table) {
            area.setBackground(isSelected ? table.getSelectionBackground() : table.getBackground());
            area.setForeground(isSelected ? table.getSelectionForeground() : table.getForeground());
        }

        @Override
        public Component getTableCellRendererComponent(JTable table,
                Object value, boolean isSelected, boolean hasFocus, int row,
                int column) {
            area.setText(value == null ? "" : value.toString());
            setColor(isSelected,table);
            return area;
        }

    }

}
于 2014-10-20T08:10:15.400 回答