我有一个文本文件，需要将其打印到特定的网络打印机。我知道打印机的名称。

到目前为止，我已经创建了Printable类来打印文件(票证)。

public class TicketPrintPage implements Printable {

private File ticket;

public TicketPrintPage(File f) {

ticket = f;

}

public int print(Graphics g, PageFormat pf, int pageIndex) throws PrinterException {

int interline = 12;

Graphics2D g2 = (Graphics2D) g;

g2.setFont(new Font("CourierThai", Font.PLAIN, 10));

int x = (int) pf.getImageableX();

int y = (int) pf.getImageableY();

try {

FileReader fr = new FileReader(ticket);

BufferedReader br = new BufferedReader(fr);

String s;

while ((s = br.readLine()) != null) {

y += interline;

g2.drawString(s, x, y);

}

} catch (IOException e) {

throw new PrinterException("File to print does not exist (" + ticket.getAbsolutePath() +") !");

}

return Printable.PAGE_EXISTS;

}

}

我这样称呼TicketPrintPage：

public void printTicketFile(File ticket, int orientation) throws PrinterException {

if (!ticket.exists()) {

throw new PrinterException("Ticket to print does not exist (" + ticket.getAbsolutePath() + ") !");

}

PrinterJob pjob = PrinterJob.getPrinterJob();

// get printer using PrintServiceLookup.lookupPrintServices(null, null) and looking at the name

pjob.setPrintService(getPrintService());

// job title

pjob.setJobName(ticket.getName());

// page fomat

PageFormat pf = pjob.defaultPage();

// landscape or portrait

pf.setOrientation(orientation);

// Paper properties

Paper a4Paper = new Paper();

double paperWidth = 8.26;

double paperHeight = 11.69;

double margin = 16;

a4Paper.setSize(paperWidth * 72.0, paperHeight * 72.0);

a4Paper.setImageableArea(

margin,

//0,

margin,

//0,

a4Paper.getWidth()- 2 * margin,

//a4Paper.getWidth(),

a4Paper.getHeight()- 2 * margin

//a4Paper.getHeight()

); // no margin = no scaling

pf.setPaper(a4Paper);

// Custom class that defines how to layout file text

TicketPrintPage pages = new TicketPrintPage(ticket);

// adding the page to a book

Book book = new Book();

book.append(pages, pf);

// Adding the book to a printjob

pjob.setPageable(book);

PrintRequestAttributeSet pras = new HashPrintRequestAttributeSet();

// No jobsheet (banner page, the page with user name, job name, date and whatnot)

pras.add(JobSheets.NONE);

// Printing

pjob.print(pras);

}

它的工作原理还不错，但是：

-我的文本不多于一页(找到了一些算法，但是很好)

-我不知道打印机何时完成打印，如果我尝试打印两页如果打印机连续打印了多张票证，则会返回“打印机未就绪”消息。

所以问题又来了：没有简单的方法可以将文本文件打印到打印机上吗？