java TableCellRenderer以及如何在不使用JTable的情况下刷新单元格背景。重新粉刷

1 周，2 日 Questions & Answers 24445

可以根据外部的值正确刷新背景，而无需强制重新绘制table.repaint();
Based, used and tested with great code made by kleopatra and Hovercraft Full Of Eels
对Java6/7有效，因为API没有任何变化

enter image description here

我的SSCCE工作正常，由^{重新绘制

import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Component;
import java.awt.GridLayout;
import javax.swing.DefaultComboBoxModel;
import javax.swing.JComboBox;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.SwingUtilities;
import javax.swing.border.EmptyBorder;
import javax.swing.table.DefaultTableCellRenderer;
import javax.swing.table.DefaultTableModel;

public class MyTableAndRenderer {

    private JFrame frame = new JFrame();
    private JPanel panel = new JPanel();
    private String[] items = {"Item 1", "Item 2", "Item 3", "Item 4"};
    private DefaultComboBoxModel comboBoxModel = new DefaultComboBoxModel(items);
    private JComboBox combo = new JComboBox(comboBoxModel);
    private JPanel panel1 = new JPanel();
    private String[] columnNames = {"First Name", "Last Name", "Sport",
        "# of Years", "Vegetarian"};
    private Object[][] data = {
        {"Kathy", "Smith", "Item 1", new Integer(5), (false)},
        {"John", "Doe", "Item 1", new Integer(3), (true)},
        {"Sue", "Black", "Item 3", new Integer(2), (false)},
        {"Jane", "White", "Item 3", new Integer(20), (true)},
        {"Joe", "Brown", "Item 3", new Integer(10), (false)}
    };
    private DefaultTableModel model = new DefaultTableModel(data, columnNames) {
        private static final long serialVersionUID = 1L;

        @Override
        public Class getColumnClass(int column) {
            return getValueAt(0, column).getClass();
        }
    };
    private JTable table = new JTable(model);

    public MyTableAndRenderer() {
        panel.setBorder(new EmptyBorder(10, 0, 2, 0));
        panel.add(combo);
        //@HFOE
        /*table.setDefaultRenderer(Object.class, new DefaultTableCellRenderer() {
            @Override
            public Component getTableCellRendererComponent(JTable table,
                    Object value, boolean isSelected, boolean hasFocus,
                    int row, int column) {
                    super.getTableCellRendererComponent(table, value, isSelected,
                        hasFocus, row, column);
                String str = combo.getSelectedItem().toString();
                if (value.toString().equalsIgnoreCase(str)) {
                    setBackground(Color.RED);
                } else {
                    setBackground(null);
                }
                return this;
            }
        });*/
        //@kleopatra
        /*table.setDefaultRenderer(Object.class, new DefaultTableCellRenderer() {
            @Override
            public Component getTableCellRendererComponent(JTable table,
                    Object value, boolean isSelected, boolean hasFocus,
                    int row, int column) {
                String str = combo.getSelectedItem().toString();
                if (value.toString().equalsIgnoreCase(str)) {
                    setBackground(Color.RED);
                } else {
                    setBackground(null);
                }
                super.getTableCellRendererComponent(table, value, isSelected,
                        hasFocus, row, column);
                return this;
            }
        });*/
        table.setDefaultRenderer(Object.class, new DefaultTableCellRenderer() {
            @Override
            public Component getTableCellRendererComponent(JTable table,
                    Object value, boolean isSelected, boolean hasFocus,
                    int row, int column) {
                super.getTableCellRendererComponent(table, value, isSelected,
                        hasFocus, row, column);
                String str = combo.getSelectedItem().toString();
                if (value.toString().equalsIgnoreCase(str)) {
                    setBackground(Color.RED);
                    table.repaint();
                } else {
                    setBackground(null);
                    table.repaint();
                }
                return this;
            }
        });
        table.getTableHeader().setReorderingAllowed(false);
        table.setAutoCreateRowSorter(true);
        table.setPreferredScrollableViewportSize(table.getPreferredSize());
        panel1.setLayout(new GridLayout(1, 1, 10, 10));
        panel1.add(new JScrollPane(table));
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.add(panel, BorderLayout.NORTH);
        frame.add(panel1);
        frame.pack();
        frame.setVisible(true);
    }

    public static void main(String[] args) {
        SwingUtilities.invokeLater(new Runnable() {
            @Override
            public void run() {
                MyTableAndRenderer fs = new MyTableAndRenderer();
            }
        });
    }
}

编辑

@Devolus写道：你测试过我发布的内容吗？我从自己的工作代码中提取了这个片段，我只是删除了其中的内容，因为它与答案无关。我在这里使用的是Java6，这对我来说很有用

public Component getTableCellRendererComponent(JTable table,
        Object value,
        boolean isSelected,
        boolean hasFocus, 
        int row, int column) 
{

    Component cell = super.getTableCellRendererComponent(table, value, isSelected, hasFocus, row, column);

    ... determine the color value ...

    cell.setBackground(back);
    cell.setForeground(fore);
}

引起

enter image description here

Java6/7并不重要

源代码（发布SSCCE的原因）

import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Component;
import java.awt.GridLayout;
import javax.swing.DefaultComboBoxModel;
import javax.swing.JComboBox;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.SwingUtilities;
import javax.swing.border.EmptyBorder;
import javax.swing.table.DefaultTableCellRenderer;
import javax.swing.table.DefaultTableModel;

public class MyTableAndRenderer {

    private JFrame frame = new JFrame();
    private JPanel panel = new JPanel();
    private String[] items = {"Item 1", "Item 2", "Item 3", "Item 4"};
    private DefaultComboBoxModel comboBoxModel = new DefaultComboBoxModel(items);
    private JComboBox combo = new JComboBox(comboBoxModel);
    private JPanel panel1 = new JPanel();
    private String[] columnNames = {"First Name", "Last Name", "Sport",
        "# of Years", "Vegetarian"};
    private Object[][] data = {
        {"Kathy", "Smith", "Item 1", new Integer(5), (false)},
        {"John", "Doe", "Item 1", new Integer(3), (true)},
        {"Sue", "Black", "Item 3", new Integer(2), (false)},
        {"Jane", "White", "Item 3", new Integer(20), (true)},
        {"Joe", "Brown", "Item 3", new Integer(10), (false)}
    };
    private DefaultTableModel model = new DefaultTableModel(data, columnNames) {
        private static final long serialVersionUID = 1L;

        @Override
        public Class getColumnClass(int column) {
            return getValueAt(0, column).getClass();
        }
    };
    private JTable table = new JTable(model);

    public MyTableAndRenderer() {
        panel.setBorder(new EmptyBorder(10, 0, 2, 0));
        panel.add(combo);
        table.setDefaultRenderer(Object.class, new DefaultTableCellRenderer() {
            @Override
            public Component getTableCellRendererComponent(JTable table,
                    Object value, boolean isSelected, boolean hasFocus,
                    int row, int column) {
                Component c = super.getTableCellRendererComponent(table, value, isSelected,
                        hasFocus, row, column);
                String str = combo.getSelectedItem().toString();
                if (value.toString().equalsIgnoreCase(str)) {
                    c.setBackground(Color.RED);
                } else {
                    c.setBackground(null);
                }
                return this;
            }
        });
        table.getTableHeader().setReorderingAllowed(false);
        table.setAutoCreateRowSorter(true);
        table.setPreferredScrollableViewportSize(table.getPreferredSize());
        panel1.setLayout(new GridLayout(1, 1, 10, 10));
        panel1.add(new JScrollPane(table));
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.add(panel, BorderLayout.NORTH);
        frame.add(panel1);
        frame.pack();
        frame.setVisible(true);
    }

    public static void main(String[] args) {
        SwingUtilities.invokeLater(new Runnable() {
            @Override
            public void run() {
                MyTableAndRenderer fs = new MyTableAndRenderer();
            }
        });
    }
}

编辑2

来自WinXp（对于所有Win操作系统，不要使用Nimbus，渲染器非常有趣，从未见过，太棒了！！！这怎么可能）

enter image description here

编辑3：

注意，我尽可能简化了代码，在这里提问之前进行了测试，然后将呈现组件强制转换为JComponent/JLabel也不起作用（使用JLabel.repaint（）/setOpaque（））

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java TableCellRenderer以及如何在不使用JTable的情况下刷新单元格背景。重新粉刷

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