javaで改行を含む文字列を印刷する方法
私はJavaを使用して文字列を印刷する必要がありますので、グーグルでたくさんの後に次の解決策が好きです。印刷ダイアログを表示せずに文字列を印刷するためにいくつかの変更を行いました。文字列が適切に定義されているように行を分割しません。
public class PrintBill implements Printable {
private static final String mText = "SHOP MA\n"
+ "----------------------------\n"
+ "Pannampitiya\n"
+ "09-10-2012 harsha no: 001\n"
+ "No Item Qty Price Amount\n"
+ "1 Bread 1 50.00 50.00\n"
+ "____________________________\n";
private static final AttributedString mStyledText = new AttributedString(mText);
static public void main(String args[]) throws PrinterException {
PrinterService ps = new PrinterService();
PrintService pss = ps.getCheckPrintService("Samsung-ML-2850D-2");//get the printer service by printer name
PrinterJob printerJob = PrinterJob.getPrinterJob();
printerJob.setPrintService(pss);
Book book = new Book();
book.append(new PrintBill(), new PageFormat());
printerJob.setPageable(book);
try {
printerJob.print();
System.out.println(printerJob.getPrintService().getName());
System.out.println("Print compleated..");
} catch (PrinterException exception) {
System.err.println("Printing error: " + exception);
exception.printStackTrace();
}
@Override
public int print(Graphics g, PageFormat format, int pageIndex) {
Graphics2D g2d = (Graphics2D) g;
g2d.translate(format.getImageableX(), format.getImageableY());
g2d.setPaint(Color.black);
Point2D.Float pen = new Point2D.Float();
AttributedCharacterIterator charIterator = mStyledText.getIterator();
LineBreakMeasurer measurer = new LineBreakMeasurer(charIterator, g2d.getFontRenderContext());
float wrappingWidth = (float) format.getImageableWidth();
while (measurer.getPosition() < charIterator.getEndIndex()) {
TextLayout layout = measurer.nextLayout(wrappingWidth);
pen.y += layout.getAscent();
float dx = layout.isLeftToRight() ? 0 : (wrappingWidth - layout.getAdvance());
layout.draw(g2d, pen.x + dx, pen.y);
pen.y += layout.getDescent() + layout.getLeading();
}
return Printable.PAGE_EXISTS;
}
}
プリンターサービス提供クラス
public class PrinterService {
public PrintService getCheckPrintService(String printerName) {
PrintService ps = null;
DocFlavor doc_flavor = DocFlavor.STRING.TEXT_PLAIN;
PrintRequestAttributeSet attr_set =
new HashPrintRequestAttributeSet();
attr_set.add(new Copies(1));
attr_set.add(Sides.ONE_SIDED);
PrintService[] service = PrintServiceLookup.lookupPrintServices(doc_flavor, attr_set);
for (int i = 0; i < service.length; i++) {
System.out.println(service[i].getName());
if (service[i].getName().equals(printerName)) {
ps = service[i];
}
}
return ps;
}
}
OK、最後に、請求書の印刷タスクに適したソリューションを見つけましたが、私にとっては適切に機能しています。
このクラスは印刷サービスを提供します
public class PrinterService {
public PrintService getCheckPrintService(String printerName) {
PrintService ps = null;
DocFlavor doc_flavor = DocFlavor.STRING.TEXT_PLAIN;
PrintRequestAttributeSet attr_set =
new HashPrintRequestAttributeSet();
attr_set.add(new Copies(1));
attr_set.add(Sides.ONE_SIDED);
PrintService[] service = PrintServiceLookup.lookupPrintServices(doc_flavor, attr_set);
for (int i = 0; i < service.length; i++) {
System.out.println(service[i].getName());
if (service[i].getName().equals(printerName)) {
ps = service[i];
}
}
return ps;
}
}
このクラスは、請求書の印刷タスクを示します。
public class HelloWorldPrinter implements Printable {
@Override
public int print(Graphics graphics, PageFormat pageFormat, int pageIndex) throws PrinterException {
if (pageIndex > 0) { /* We have only one page, and 'page' is zero-based */
return NO_SUCH_PAGE;
}
Graphics2D g2d = (Graphics2D) graphics;
g2d.translate(pageFormat.getImageableX(), pageFormat.getImageableY());
//the String to print in multiple lines
//writing a semicolon (;) at the end of each sentence
String mText = "SHOP MA;"
+ "Pannampitiya;"
+ "----------------------------;"
+ "09-10-2012 harsha no: 001 ;"
+ "No Item Qty Price Amount ;"
+ "----------------------------;"
+ "1 Bread 1 50.00 50.00 ;"
+ "----------------------------;";
//Prepare the rendering
//split the String by the semicolon character
String[] bill = mText.split(";");
int y = 15;
Font f = new Font(Font.SANS_SERIF, Font.PLAIN, 8);
graphics.setFont(f);
//draw each String in a separate line
for (int i = 0; i < bill.length; i++) {
graphics.drawString(bill[i], 5, y);
y = y + 15;
}
/* tell the caller that this page is part of the printed document */
return PAGE_EXISTS;
}
public void pp() throws PrinterException {
PrinterService ps = new PrinterService();
//get the printer service by printer name
PrintService pss = ps.getCheckPrintService("Deskjet-1000-J110-series-2");
PrinterJob job = PrinterJob.getPrinterJob();
job.setPrintService(pss);
job.setPrintable(this);
try {
job.print();
} catch (PrinterException ex) {
ex.printStackTrace();
}
}
public static void main(String[] args) {
HelloWorldPrinter hwp = new HelloWorldPrinter();
try {
hwp.pp();
} catch (Exception e) {
e.printStackTrace();
}
}
}
このようにします：-
String newline = System.getProperty("line.separator");
private static final String mText = "SHOP MA" + newline +
+ "----------------------------" + newline +
+ "Pannampitiya" + newline +
+ "09-10-2012 harsha no: 001" + newline +
+ "No Item Qty Price Amount" + newline +
+ "1 Bread 1 50.00 50.00" + newline +
+ "____________________________" + newline;
private static final String mText = "SHOP MA" + "\n" +
+ "----------------------------" + "\n" +
+ "Pannampitiya" + newline +
+ "09-10-2012 harsha no: 001" + "\n" +
+ "No Item Qty Price Amount" + "\n" +
+ "1 Bread 1 50.00 50.00" + "\n" +
+ "____________________________" + "\n";
これは動作するはずです。
String newline = System.getProperty("line.separator");
System.out.println("First line" + newline);
System.out.println("Second line" + newline);
System.out.println("Third line");
StringBuilderを使用して試すことができます：-
final StringBuilder sb = new StringBuilder();
sb.append("SHOP MA\n");
sb.append("----------------------------\n");
sb.append("Pannampitiya\n");
sb.append("09-10-2012 harsha no: 001\n");
sb.append("No Item Qty Price Amount\n");
sb.append("1 Bread 1 50.00 50.00\n");
sb.append("____________________________\n");
// To use StringBuilder as String.. Use `toString()` method..
System.out.println(sb.toString());
複雑になりすぎていると思います。 AttributedStringは、印刷コンテキストで属性を保存するときに使用されます。しかし、あなたはその中にデータを保存しています。 AttributedString
単純に、データをDocumentオブジェクトに保存し、Fontd、Bold、ItalicなどのプロパティをすべてAttributedStringに渡します。
これが役立つことを願っています 簡単なチュートリアル そして 詳細なチュートリアル