如何打印自定义纸张尺寸(检查8"x 4")？
Lia*_*iam 4 html java printing swing
我试图从Java小程序打印自定义纸张大小.我已经设置了纸张尺寸,但它被忽略了.
我也试过使用书籍方法,因为我已经看到了一些有关这方面的帮助,但是当我使用它时,它只是打印一个空白页面,似乎仍然是A4(我打算打印检查显然很多较小(8"x 4")).
我试图从JEditorPane打印HTML,如果这有任何区别.
如果你有任何想法,我会非常感激,我正用这一个撕裂我的头发.
我还应该补充一点,就Java而言,我是一个初学者.
这是我到目前为止:
更新: 我现在已经有了正确的页面大小,但似乎无法获取我正在加载的HTML页面以适应或与页面大小对齐.
更新: 现在我无法让applet在浏览器中运行.它的工作原理是eclipse而不是浏览器.我还需要从参数传递URL.
这是我正在使用的HTML applet标签和更新的Java代码:
<!DOCTYPE html>
<html>
<head><title>Printing Cheque</title></head>
<body>
<applet width=100 height=100 code="HTMLPrinter"
archive="cheque_print.jar">
</applet>
</body>
</html>
package com.yunatech.pns.chequeprint;
import java.applet.Applet;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.print.Book;
import java.awt.print.PageFormat;
import java.awt.print.Paper;
import java.awt.print.Printable;
import java.awt.print.PrinterException;
import java.awt.print.PrinterJob;
import javax.swing.JEditorPane;
public class HTMLPrinter extends Applet {
/**
*
*/
private static final long serialVersionUID = 8065834484717197790L;
private static JEditorPane editor;
public HTMLPrinter() {
try {
editor = new JEditorPane();
editor.setPage("http://localhost/print_test/test.html");
PrinterJob pj = PrinterJob.getPrinterJob();
if (pj.printDialog()) {
PageFormat pf = pj.defaultPage();
Paper paper = pf.getPaper();
double width = 8d * 72d;
double height = 4d * 72d;
double margin = 1d * 72d;
paper.setSize(width, height);
paper.setImageableArea(
margin,
0,
width - (margin * 2),
height);
System.out.println("Before- " + dump(paper));
pf.setOrientation(PageFormat.PORTRAIT);
pf.setPaper(paper);
System.out.println("After- " + dump(paper));
System.out.println("After- " + dump(pf));
dump(pf);
PageFormat validatePage = pj.validatePage(pf);
System.out.println("Valid- " + dump(validatePage));
Book pBook = new Book();
pBook.append(new Page(), pf);
pj.setPageable(pBook);
try {
pj.print();
} catch (PrinterException ex) {
ex.printStackTrace();
}
}
} catch (Exception exp) {
exp.printStackTrace();
}
}
protected static String dump(Paper paper) {
StringBuilder sb = new StringBuilder(64);
sb.append(paper.getWidth()).append("x").append(paper.getHeight())
.append("/").append(paper.getImageableX()).append("x").
append(paper.getImageableY()).append(" - ").append(paper
.getImageableWidth()).append("x").append(paper.getImageableHeight());
return sb.toString();
}
protected static String dump(PageFormat pf) {
Paper paper = pf.getPaper();
return dump(paper);
}
public static class Page implements Printable {
public int print(Graphics graphics, PageFormat pageFormat, int pageIndex) {
if (pageIndex >= 1) return Printable.NO_SUCH_PAGE;
Graphics2D g2d = (Graphics2D)graphics;
g2d.translate((int)pageFormat.getImageableX(), (int)pageFormat.getImageableY());
editor.setSize((int)pageFormat.getImageableWidth(), (int)pageFormat.getImageableHeight());
editor.print(g2d);
return Printable.PAGE_EXISTS;
}
}
}
提前感谢您提供的任何帮助.
打印设计为每英寸像素.基本打印API使用DPI为72.
您需要相应地转换测量值...
double paperWidth = 8 * 72d;
double paperHeight = 4 * 72d;
double margin = 1 * 72d;
用例子更新
g2d.setClip(0, 0, (int)pageFormat.getImageableWidth(), (int)pageFormat.getImageableHeight());是不明智的,危险的,通常,不是必需的,除此之外,你使用了错误的宽度和高度值.可成像参数考虑了边距,但是您没有翻译图形,这将更有可能切割您必须打印到的区域的底部左侧部分...
我只是避免使用剪辑
public class TestPrinting01 {
public static void main(String[] args) {
PrinterJob pj = PrinterJob.getPrinterJob();
if (pj.printDialog()) {
PageFormat pf = pj.defaultPage();
Paper paper = pf.getPaper();
double width = 8d * 72d;
double height = 4d * 72d;
double margin = 1d * 72d;
paper.setSize(width, height);
paper.setImageableArea(
margin,
margin,
width - (margin * 2),
height - (margin * 2));
System.out.println("Before- " + dump(paper));
pf.setOrientation(PageFormat.LANDSCAPE);
pf.setPaper(paper);
System.out.println("After- " + dump(paper));
System.out.println("After- " + dump(pf));
dump(pf);
PageFormat validatePage = pj.validatePage(pf);
System.out.println("Valid- " + dump(validatePage));
Book pBook = new Book();
pBook.append(new Page(), pf);
pj.setPageable(pBook);
try {
pj.print();
} catch (PrinterException ex) {
ex.printStackTrace();
}
}
}
protected static String dump(Paper paper) {
StringBuilder sb = new StringBuilder(64);
sb.append(paper.getWidth()).append("x").append(paper.getHeight())
.append("/").append(paper.getImageableX()).append("x").
append(paper.getImageableY()).append(" - ").append(paper
.getImageableWidth()).append("x").append(paper.getImageableHeight());
return sb.toString();
}
protected static String dump(PageFormat pf) {
Paper paper = pf.getPaper();
return dump(paper);
}
public static class Page implements Printable {
public int print(Graphics graphics, PageFormat pageFormat, int pageIndex) {
if (pageIndex >= 1) {
return Printable.NO_SUCH_PAGE;
}
Graphics2D g2d = (Graphics2D) graphics;
// Be careful of clips...
g2d.translate((int) pageFormat.getImageableX(), (int) pageFormat.getImageableY());
double width = pageFormat.getImageableWidth();
double height = pageFormat.getImageableHeight();
g2d.drawRect(0, 0, (int)pageFormat.getImageableWidth() - 1, (int)pageFormat.getImageableHeight() - 1);
FontMetrics fm = g2d.getFontMetrics();
String text = "top";
g2d.drawString(text, 0, fm.getAscent());
text = "bottom";
double x = width - fm.stringWidth(text);
double y = (height - fm.getHeight()) + fm.getAscent();
g2d.drawString(text, (int)x, (int)y);
return Printable.PAGE_EXISTS;
}
}
}
更新
打印组件时,您将对其布局负责.
public class TestPrinting01 {
private static JEditorPane editor;
public static void main(String[] args) {
try {
editor = new JEditorPane();
editor.setPage(new File("C:/hold/search.htm").toURI().toURL());
PrinterJob pj = PrinterJob.getPrinterJob();
if (pj.printDialog()) {
PageFormat pf = pj.defaultPage();
Paper paper = pf.getPaper();
double width = 8d * 72d;
double height = 4d * 72d;
double margin = 1d * 72d;
paper.setSize(width, height);
paper.setImageableArea(
margin,
margin,
width - (margin * 2),
height - (margin * 2));
System.out.println("Before- " + dump(paper));
pf.setOrientation(PageFormat.LANDSCAPE);
pf.setPaper(paper);
System.out.println("After- " + dump(paper));
System.out.println("After- " + dump(pf));
dump(pf);
PageFormat validatePage = pj.validatePage(pf);
System.out.println("Valid- " + dump(validatePage));
Book pBook = new Book();
pBook.append(new Page(), pf);
pj.setPageable(pBook);
try {
pj.print();
} catch (PrinterException ex) {
ex.printStackTrace();
}
}
} catch (Exception exp) {
exp.printStackTrace();
}
}
protected static String dump(Paper paper) {
StringBuilder sb = new StringBuilder(64);
sb.append(paper.getWidth()).append("x").append(paper.getHeight())
.append("/").append(paper.getImageableX()).append("x").
append(paper.getImageableY()).append(" - ").append(paper
.getImageableWidth()).append("x").append(paper.getImageableHeight());
return sb.toString();
}
protected static String dump(PageFormat pf) {
Paper paper = pf.getPaper();
return dump(paper);
}
public static class Page implements Printable {
public int print(Graphics graphics, PageFormat pageFormat, int pageIndex) {
if (pageIndex >= 1) {
return Printable.NO_SUCH_PAGE;
}
Graphics2D g2d = (Graphics2D) graphics;
// Be careful of clips...
// g2d.setClip(0, 0, (int) pageFormat.getWidth(), (int) pageFormat.getHeight());
g2d.translate((int) pageFormat.getImageableX(), (int) pageFormat.getImageableY());
double width = pageFormat.getImageableWidth();
double height = pageFormat.getImageableHeight();
System.out.println("width = " + width);
System.out.println("height = " + height);
editor.setLocation(0, 0);
editor.setSize((int)width, (int)height);
editor.printAll(g2d);
g2d.setColor(Color.BLACK);
g2d.draw(new Rectangle2D.Double(0, 0, width, height));
return Printable.PAGE_EXISTS;
}
}
}