JTable设置多行表头 BasicTableHeaderUI 绘制

package com.yao.table;

import javax.swing.*;
import javax.swing.plaf.basic.BasicTableHeaderUI;
import javax.swing.table.JTableHeader;
import java.awt.*;/************************************************************
*
*  * @author 邓洪书
*  */
public class StoreTable extends JTable {
public StoreTable() {
super(0, 13);
this.setAutoResizeMode(JTable.AUTO_RESIZE_OFF);
this.getTableHeader().setUI(new UI());
}
// 表头绘制器*********************************************************************
private class UI extends BasicTableHeaderUI {
private JTableHeader header;
public void paint(Graphics g, JComponent c) {
header = (JTableHeader) c;
getTableHeader().setPreferredSize(new Dimension(StoreTable.this.getWidth(),85));// 设置表头大小。横坐标必须足够大，
//否则会出现绘制不完全以及闪烁现象
//分类
JLabel label=getLabel("分类");
rendererPane.paintComponent(g, label, header, 0, 0, getWidth(0), 45, true);
//到货日期
label=getLabel("到货日期");
rendererPane.paintComponent(g, label, header, getX(1), 0, getWidth(1), 45, true);
//送货日期   label=getLabel("送货日期");
rendererPane.paintComponent(g, label, header, getX(2), 0, getWidth(2), 45, true);
//收款代理   label=getLabel("收款代理");
rendererPane.paintComponent(g, label, header, getX(3), 0, getWidth(3), 45, true);
//客户**************************************************************************
label=getLabel("客户");
rendererPane.paintComponent(g, label, header, getX(4), 0, getWidth(4)+getWidth(5), 30, true);
label=getLabel("上游");
rendererPane.paintComponent(g, label, header, getX(4), 30, getWidth(4), 15, true);
label=getLabel("下游");
rendererPane.paintComponent(g, label, header, getX(5), 30, getWidth(5), 15, true);
//报关单号**********************************************************************
label=getLabel("报关单号");
rendererPane.paintComponent(g, label, header, getX(6), 0, getX(10)-getX(6), 15, true);
label=getLabel("上游");
rendererPane.paintComponent(g, label, header, getX(6), 15, getWidth(6)+getWidth(7), 15, true);
label=getLabel("下游");
rendererPane.paintComponent(g, label, header, getX(8), 15, getWidth(8)+getWidth(9), 15, true);
label=getLabel("进口");
rendererPane.paintComponent(g, label, header, getX(6), 30, getWidth(6), 15, true);
label=getLabel("出口");
rendererPane.paintComponent(g, label, header, getX(7), 30, getWidth(7), 15, true);
label=getLabel("进口");
rendererPane.paintComponent(g, label, header, getX(8), 30, getWidth(8), 15, true);
label=getLabel("出口");
rendererPane.paintComponent(g, label, header, getX(9), 30, getWidth(9), 15, true);
//业务员
label=getLabel("业务员");
rendererPane.paintComponent(g, label, header, getX(10), 0, getWidth(10), 45, true);
//操作员
label=getLabel("操作员");
rendererPane.paintComponent(g, label, header, getX(11), 0, getWidth(11), 45, true);
//审核人   label=getLabel("审核人");
rendererPane.paintComponent(g, label, header, getX(12), 0, getWidth(12), 45, true);
}
// 得到指定列的起始坐标
private int getX(int column)
{    int x=0;
for(int i=0;i<column;i++)
x+=header.getColumnModel().getColumn(i).getWidth();
return x;
}
//得到指定列的宽度
private int getWidth(int column)
{
return header.getColumnModel().getColumn(column).getWidth();
}
//得到具有指定文本的标签
private JLabel getLabel(String text)
{   JLabel label = new JLabel(text, JLabel.CENTER);
label.setFont(new Font("Dialog",   Font.PLAIN,   12));
label.setBorder(UIManager.getBorder("TableHeader.cellBorder"));
return label;
}
}
public static void main(String[] args)
{
JFrame frame=new JFrame();
frame.setSize(800,300);  frame.setDefaultCloseOperation(3);
frame.getContentPane().add(new JScrollPane(new StoreTable()));
frame.setVisible(true);
}
}