在java中将文本文件打印到特定打印机
声明：本页面是StackOverFlow热门问题的中英对照翻译，遵循CC BY-SA 4.0协议，如果您需要使用它，必须同样遵循CC BY-SA许可，注明原文地址和作者信息，同时你必须将它归于原作者（不是我）：StackOverFlow
原文地址: http://stackoverflow.com/questions/1097346/
Warning: these are provided under cc-by-sa 4.0 license. You are free to use/share it, But you must attribute it to the original authors (not me):
StackOverFlow
Print text File to specific printer in java
提问by Icegras
I have a text file, and I need to print it to a specific network printer. I know the name of the printer.
我有一个文本文件，我需要将它打印到特定的网络打印机。我知道打印机的名称。
Until now I have made a Printable class to print my file (ticket).
到目前为止，我已经制作了一个 Printable 类来打印我的文件（票）。
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;
}
}
I call this TicketPrintPage this way :
我这样称呼这个 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);
}
It works not so bad but :
- I doesn't work for more than one page of text (found some algorithms for that but well)
- I can't get to know when the printer is done printing, and if I try printing two or more tickets in a row the printer will return a Printer not ready message.
它的效果还不错，但是：
- 我不能处理超过一页的文本（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或连续多张票，打印机将返回打印机未就绪消息。
So the question again is : Isn't there a simple way to print a text file to a printer ?
那么问题又来了：难道没有一种简单的方法可以将文本文件打印到打印机吗？
采纳答案by Allan
I'm not sure if this solves your problem but I use the following to print a text file
我不确定这是否能解决您的问题，但我使用以下内容打印文本文件
FileInputStream textStream;
textStream = new FileInputStream(FILE_NAME);
DocFlavor flavor = DocFlavor.INPUT_STREAM.AUTOSENSE;
Doc mydoc = new SimpleDoc(textStream, flavor, null);
PrintService[] services = PrintServiceLookup.lookupPrintServices(
flavor, aset);
PrintService defaultService = PrintServiceLookup.lookupDefaultPrintService();
if(services.length == 0) {
if(defaultService == null) {
//no printer found
} else {
//print using default
DocPrintJob job = defaultService.createPrintJob();
job.print(mydoc, aset);
}
} else {
//built in UI for printing you may not use this
PrintService service = ServiceUI.printDialog(null, 200, 200, services, defaultService, flavor, aset);
if (service != null)
{
DocPrintJob job = service.createPrintJob();
job.print(mydoc, aset);
}
}
You may not need the ServiceUI, but I think you could use PrintService[] services to get a list of printers available for printing. And using an input stream and the Doc class you can print a file to a printer.
您可能不需要 ServiceUI，但我认为您可以使用 PrintService[] 服务来获取可用于打印的打印机列表。使用输入流和 Doc 类，您可以将文件打印到打印机。
回答by linski
JTextComponent#printshould do the trick:
JTextComponent#print应该可以解决问题：
JTextPane jtp = new JTextPane();
jtp.setBackground(Color.white);
jtp.setText("text to print");
boolean show = true;
try {
jtp.print(null, null, show, null, null, show);
} catch (java.awt.print.PrinterException ex) {
ex.printStackTrace();
}
in this manner you can quickly print out even nice formatted text - just create a StyledDocument and attach it to JTextPane before printing.
通过这种方式，您甚至可以快速打印出漂亮的格式化文本 - 只需在打印前创建一个 StyledDocument 并将其附加到 JTextPane。
