正如每个人都已经提到的那样（当我在假期放松时：-）-TablePrintable紧密结合以确保机密性，无法继承任何类，也无法配置页眉/页脚打印。挂钩的唯一选择是包装表的默认可打印内容，让它在没有页眉/页脚的情况下进行工作，并自行打印页眉/页脚。
到目前为止显示的代码片段的问题在于，它们不能很好地与多页一起使用-当然，这是所有作者都知道和提到的-
因为默认可打印内容认为没有页眉/页脚，并且可以自由使用它们所需的空间。不出所料 ：-）
所以问题是：有没有办法使默认值不打印到页眉/页脚区域？是的，它是：double-wopper（ehh .. wrapper）是答案-
通过将给定的pageFormat封装为一个返回调整后的getImageableHeight /
Y的值，使默认printable相信其可打印空间更少。就像是：
public class CustomPageFormat extends PageFormat { private PageFormat delegate; private double headerHeight; private double footerHeight; public CustomPageFormat(PageFormat format, double headerHeight, double footerHeight) { this.delegate = format; this.headerHeight = headerHeight; this.footerHeight = footerHeight; } @Override public double getImageableY() { return delegate.getImageableY() + headerHeight; } @Override public double getImageableHeight() { return delegate.getImageableHeight() - headerHeight - footerHeight; } // all other methods simply delegate然后在可打印包装纸中使用（必须同样完成页脚）：
public class CustomTablePrintable implements Printable { Printable tablePrintable; JTable table; MessageFormat header; MessageFormat footer; public CustomTablePrintable(MessageFormat header, MessageFormat footer) { this.header = header; this.footer = footer; } public void setTablePrintable(JTable table, Printable printable) { tablePrintable = printable; this.table = table; } @Override public int print(Graphics graphics, PageFormat pageFormat, int pageIndex) throws PrinterException { // grab an untainted graphics Graphics2D g2d = (Graphics2D)graphics.create(); // calculate the offsets and wrap the pageFormat double headerOffset = calculateHeaderHeight(g2d, pageIndex); CustomPageFormat wrappingPageFormat = new CustomPageFormat(pageFormat, headerOffset, 0); // feed the wrapped pageFormat into the default printable int exists = tablePrintable.print(graphics, wrappingPageFormat, pageIndex); if (exists != PAGE_EXISTS) { g2d.dispose(); return exists; } // translate the graphics to the start of the original pageFormat and draw header g2d.translate(pageFormat.getImageableX(), pageFormat.getImageableY()); printHeader(g2d, pageIndex, (int) pageFormat.getImageableWidth()); g2d.dispose(); return PAGE_EXISTS; } protected double calculateHeaderHeight(Graphics2D g, int pageIndex) { if (header == null) return 0; Object[] pageNumber = new Object[]{new Integer(pageIndex + 1)}; String text = header.format(pageNumber); Font headerFont = table.getFont().deriveFont(Font.BOLD, 18f); g.setFont(headerFont); Rectangle2D rect = g.getFontMetrics().getStringBounds(text, g); return rect.getHeight(); } protected void printHeader(Graphics2D g, int pageIndex, int imgWidth) { Object[] pageNumber = new Object[]{new Integer(pageIndex + 1)}; String text = header.format(pageNumber); Font headerFont = table.getFont().deriveFont(Font.BOLD, 18f); g.setFont(headerFont); Rectangle2D rect = g.getFontMetrics().getStringBounds(text, g); // following is c&p from TablePrintable printText int tx; // if the text is small enough to fit, center it if (rect.getWidth() < imgWidth) { tx = (int) ((imgWidth - rect.getWidth()) / 2); // otherwise, if the table is LTR, ensure the left side of // the text shows; the right can be clipped } else if (table.getComponentOrientation().isLeftToRight()) { tx = 0; // otherwise, ensure the right side of the text shows } else { tx = -(int) (Math.ceil(rect.getWidth()) - imgWidth); } int ty = (int) Math.ceil(Math.abs(rect.getY())); g.setColor(Color.BLACK); g.drawString(text, tx, ty); }}最后从表的getPrintable返回，如：
final JTable table = new JTable(myModel){ @Override public Printable getPrintable(PrintMode printMode, MessageFormat headerFormat, MessageFormat footerFormat) { Printable printable = super.getPrintable(printMode, null, null); CustomTablePrintable custom = new CustomTablePrintable(headerFormat, footerFormat); custom.setTablePrintable(this, printable); return custom; } };可以实现printHeader / Footer来执行所需的任何操作。
归根结底：“我是否需要调用g.drawString（…）”这个问题的答案仍然是“是”。但是至少它安全地位于表本身之外：-)
