在 Java 中打印到标签打印机
我在打印到标签打印机时遇到问题。下面的代码在一个上打印4个“标签”（标签附上的图片）。
下面的代码打印到兄弟QL-500标签打印机。它可以打印到 3.5 英寸 x 1.1 英寸的标签上。
如果有人能帮助我更好地理解代码，那就太好了。
import java.awt.Font;
import java.awt.Graphics;
import java.awt.Graphics2D;
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 java.text.DateFormat;
import java.util.Date;
import java.util.Locale;
import javax.print.PrintService;
public class DYMOLabelPrintConnector implements Printable {
public static final String PRINTERNAME = "DYMO LabelWriter 400";
public static final boolean PRINTMENU = false;
public static void main(String[] args) {
PrinterJob printerJob = PrinterJob.getPrinterJob();
PageFormat pageFormat = printerJob.defaultPage();
Paper paper = new Paper();
final double widthPaper = (1.2 * 72);
final double heightPaper = (1.5 * 72);
paper.setSize(widthPaper, heightPaper);
paper.setImageableArea(0, 0, widthPaper, heightPaper);
pageFormat.setPaper(paper);
pageFormat.setOrientation(PageFormat.LANDSCAPE);
if (PRINTMENU) {
if (printerJob.printDialog()) {
printerJob.setPrintable(new DYMOLabelPrintConnector(), pageFormat);
try {
printerJob.print();
} catch (PrinterException e) {
e.printStackTrace();
}
}
} else {
PrintService[] printService = PrinterJob.lookupPrintServices();
for (int i = 0; i < printService.length; i++) {
System.out.println(printService[i].getName());
if (printService[i].getName().compareTo(PRINTERNAME) == 0) {
try {
printerJob.setPrintService(printService[i]);
printerJob.setPrintable(new DYMOLabelPrintConnector(), pageFormat);
printerJob.print();
} catch (PrinterException e) {
e.printStackTrace();
}
}
}
}
System.exit(0);
}
public String getValue(final int elementOnLabel, final int labelCounter) {
String value = "";
switch (elementOnLabel) {
case 0:
// what ever you want to have in this line
value = "SetupX";
break;
case 1:
// what ever you want to have in this line
value = "fiehnlab.ucd";
break;
case 2:
// what ever you want to have in this line
value = "id: " + labelCounter;
break;
case 3:
// what ever you want to have in this line
// TODO - add DB connection
value = "label:" + elementOnLabel;
break;
case 4:
// what ever you want to have in this line
value = DateFormat.getDateInstance(DateFormat.SHORT, Locale.US).format(new Date());
break;
default:
break;
}
return value;
}
public int print(Graphics graphics, PageFormat pageFormat, int pageIndex)
throws PrinterException {
System.out.println("printing page: " + pageIndex);
if (pageIndex < getPageNumbers()) {
Graphics2D g = (Graphics2D) graphics;
// g.translate(pageFormat.getImageableX(), pageFormat.getImageableY());
g.translate(20, 10);
String value = "";
pageIndex = pageIndex + 1;
// specific for four circular labels per page
for (int x = 0; x < 80; x = x + 50) {
for (int y = 0; y < 80; y = y + 36) {
int posOnPage = 4; // BottomRight, TopRight, BottomLeft, TopLeft
if (x > 0) {
posOnPage = posOnPage - 2;
}
if (y > 0) {
posOnPage = posOnPage - 1;
}
// current counter for the label.
int id = (posOnPage - 1) + ((pageIndex - 1) * 4);
// setupx
g.setFont(new Font(g.getFont().getFontName(), g.getFont().getStyle(), 3));
value = this.getValue(0, id);
g.drawString(" " + value, x, y);
// fiehnlab
g.setFont(new Font(g.getFont().getFontName(), g.getFont().getStyle(), 3));
value = this.getValue(1, id);
g.drawString(" " + value, x, y + 4);
// ID
g.setFont(new Font(g.getFont().getFontName(), Font.BOLD, 7));
value = this.getValue(2, id);
g.drawString("" + value, x, y + 10);
// label
g.setFont(new Font(g.getFont().getFontName(), g.getFont().getStyle(), 5));
value = this.getValue(3, id);
g.drawString(" " + value, x, y + 16);
// date
g.setFont(new Font(g.getFont().getFontName(), Font.PLAIN, 3));
value = this.getValue(4, id);
g.drawString(" " + value, x, y + 20);
}
}
return PAGE_EXISTS;
} else {
return NO_SUCH_PAGE;
}
}
public int getPageNumbers() {
return 5;
}
}
enter code here
以下是它打印的内容：
