使用Java在双工模式下打印横向文档

Question

我有一个JasperReports报告要在双面打印机上以横向模式打印。在这方面，我必须支持PCL5和PCL6打印驱动程序。

在互联网上搜索，我发现了以下代码片段来完成这项工作：

import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.print.Book;
import java.awt.print.PageFormat;
import java.awt.print.Printable;
import java.awt.print.PrinterException;
import java.awt.print.PrinterJob;
import javax.print.PrintService;
import javax.print.attribute.HashPrintRequestAttributeSet;
import javax.print.attribute.PrintRequestAttributeSet;
import javax.print.attribute.standard.OrientationRequested;
import javax.print.attribute.standard.Sides;
public class PrintingTest {
public static void main(String[] args) {
try {
//This are for configuration purpose
String orientation = "LANDSCAPE";
String duplexMode = "LONG_EDGE";
int pageOrientation = 0;
PrintRequestAttributeSet atr = new HashPrintRequestAttributeSet();
if ("Landscape".equals(orientation)) {
atr.add(OrientationRequested.LANDSCAPE);
pageOrientation = PageFormat.LANDSCAPE;
} else if ("Reverse_Landscape".equals(orientation)) {
atr.add(OrientationRequested.REVERSE_LANDSCAPE);
pageOrientation = PageFormat.REVERSE_LANDSCAPE;
} else {
atr.add(OrientationRequested.PORTRAIT);
pageOrientation = PageFormat.PORTRAIT;
}
if ("LONG_EDGE".equals(duplexMode)) {
atr.add(Sides.TWO_SIDED_LONG_EDGE);
} else {
atr.add(Sides.TWO_SIDED_SHORT_EDGE);
}
//Printing to the default printer
PrintService printer = javax.print.PrintServiceLookup
.lookupDefaultPrintService();
//Creating the printing job
PrinterJob printJob = PrinterJob.getPrinterJob();
printJob.setPrintService(printer);
Book book = new Book();
PageFormat pageFormat = printJob.defaultPage();
pageFormat.setOrientation(pageOrientation);
// Appending a exampledocument to the book
book.append(new ExampleDocument(), pageFormat);
// Appending another exampledocument to the book
book.append(new ExampleDocument(), pageFormat);
// Setting the Pageable to the printjob
printJob.setPageable(book);
try {
// Here a could show the print dialog
// printJob.printDialog(atr);
// Here I pass the previous defined attributes
printJob.print(atr);
} catch (Exception PrintException) {
PrintException.printStackTrace();
}
} catch (PrinterException ex) {
ex.printStackTrace();
}
}
public static final int MARGIN_SIZE = 72;
private static class ExampleDocument implements Printable {
public int print(Graphics g, PageFormat pageFormat, int page) {
Graphics2D g2d = (Graphics2D) g;
g2d.translate(pageFormat.getImageableX(),
pageFormat.getImageableY());
// Only on the first two documents...
if (page <= 1) {
// Prints using one inch margin
g2d.drawString("Printing page " + page + " - duplex...",
MARGIN_SIZE, MARGIN_SIZE);
return (PAGE_EXISTS);
}
return (NO_SUCH_PAGE);
}
}
}

这在PCL6上运行良好，但在PCL5测试时，我注意到LONG_EDGE和SHORT_EDGE规则被简单地忽略了。并且在这两种情况下，作业都被发送为LONG_EDGE。这不会是一个问题，除了Java AWT打印API通过将所有页面逆时针旋转90º来解决横向打印问题，从而给人留下在SHORT_EDGE模式下打印的印象。

Obs：通过使用SWT API，我能够使用SHORT_EDGE和LONG_EDGEWT兼容的打印请求中转换jasper打印请求。

我的问题是：有人遇到过这种情况吗？给了它什么解决方案？

根据我的观察，我找到了以下可能的解决方案：

1. 与其让AWT翻页并发送纵向打印请求，不如强制其将其作为横向打印请求发送；

2. 找到一种方法，当页面处于横向模式时，反转LONG_EDGE和SHORT_EDGEONG_EDGE请求的问题。

3. 转换JasperReports以使用SWT打印API。

Answer 1

不确定它是否有帮助，但我在6年前遇到了这个问题，唯一的解决方案是使用打印机(Xerox)的功能通过.xpf文件接收打印指令。示例：

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE xpif SYSTEM "xpif-v02012.dtd">
<xpif cpss-version="2.01" version="1.0" xml:lang="en">
<xpif-operation-attributes>
<job-name syntax="name" xml:lang="en" xml:space="preserve">job name</job-name>
<requesting-user-name syntax="name" xml:space="preserve">domain user</requesting-user-name>
</xpif-operation-attributes>
<job-template-attributes>
<copies syntax="integer">1</copies>
<finishings syntax="1setOf">
<value syntax="enum">3</value>
</finishings>
<job-recipient-name syntax="name" xml:lang="en-US" xml:space="preserve">domain user</job-recipient-name>
<job-save-disposition syntax="collection">
<save-disposition syntax="keyword">none</save-disposition>
</job-save-disposition>
<media-col syntax="collection">
<media-type syntax="keyword">stationery</media-type>
<media-hole-count syntax="integer">0</media-hole-count>
<media-color syntax="keyword">blue</media-color>
<media-size syntax="collection">
<x-dimension syntax="integer">21000</x-dimension>
<y-dimension syntax="integer">29700</y-dimension>
</media-size>
</media-col>
<orientation-requested syntax="enum">3</orientation-requested>
<sheet-collate syntax="keyword">collated</sheet-collate>
<sides syntax="keyword">one-sided</sides>
<x-side1-image-shift syntax="integer">0</x-side1-image-shift>
<y-side1-image-shift syntax="integer">0</y-side1-image-shift>
</job-template-attributes>
</xpif>

其与需要打印的文件一起被发送到打印机。