我有一份要在双面打印机上以横向模式打印的JasperReports报告。在这一点上,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,但是在PCL5上进行测试时,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,作业都作为LONG_EDGE发送。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,从而造成它是在SHORT_EDGE模式下打印的印象。
Obs:通过使用SWT API ,我能够正确打印SHORT_EDGE和LONG_EDGE两种配置,纵向和横向。但我无法在兼容SWT的打印请求中转换碧玉打印请求。
我的问题是:有没有人遇到过这种情况?给出了哪种解决方案?
根据我的观察,我发现了这些可能的解决方案:
与其让AWT翻页并发送纵向打印请求,不如强制它作为横向打印请求发送;
当页面处于横向模式时,找到一种方法来反转LONG_EDGE和SHORT_EDGE命令。请注意,对于这一点,我有义务纠正两者都被视为LONG_EDGE请求的问题。
将JasperReports转换为使用SWT打印API。