java itext和dotmatrix打印机

Question

我有一个JSP页面，它只需获取参数、查询数据库、生成发票PDF，然后静默地发送到默认打印机。我使用itext库

发票必须用连续纸张在点阵打印机上打印

每个发票页面的大小为5英寸

如果我选择页面大小为a5，代码将生成一个PDF，如图所示

a5 portrait

打印时，它打印一页，另一页留白。用户必须手动将纸张向后滚动

如果我选择pagesize作为a5横向（a5.rotate（）），代码会生成一个PDF，如图中所示，这样更好

a5 landscape

但当它打印在纸上时，它会开始垂直打印页面，因为打印机有一个a4纸盘

在我看来，我需要将我的打印机定义为具有连续纸张的点矩阵打印机

我使用的代码是：

    Document document = new Document(PageSize.A5,0,0,0,0);
try {   
 PdfWriter writer = PdfWriter.getInstance(document, response.getOutputStream());
 writer.addViewerPreference(PdfName.PRINTSCALING, PdfName.NONE);
document.open();


StringBuffer javascript = new StringBuffer();
 javascript.append("this.print({bUI: false, bSilent: true, bShrinkToFit: true});");
 PdfAction pdfAction= PdfAction.javaScript(javascript.toString(), writer);
 writer.addJavaScript(pdfAction);
 writer.addViewerPreference(PdfName.PRINTSCALING, PdfName.NONE);
 PdfPTable table = new PdfPTable(3); // 3 columns.
 table.setWidthPercentage(100);

 PdfPCell cell1 = new PdfPCell(new Paragraph(""));
 PdfPCell cell2 = new PdfPCell(new Paragraph(""));
 PdfPCell cell3 = new PdfPCell(new Paragraph(MakbuzNo,FontFactory.getFont(FontFactory.COURIER,9)));
 cell3.setLeading(16f, 0f);
 cell1.setBorder(Rectangle.NO_BORDER);
 cell2.setBorder(Rectangle.NO_BORDER);
 cell3.setBorder(Rectangle.NO_BORDER);
 
cell3.setHorizontalAlignment(Element.ALIGN_RIGHT);
table.addCell(cell1);
table.addCell(cell2);    
table.addCell(cell3);    

cell1 = new PdfPCell(new Paragraph(""));
cell2 = new PdfPCell(new Paragraph(""));
cell3 = new PdfPCell(new Paragraph(Duzenleyen,FontFactory.getFont(FontFactory.COURIER,9)));
cell3.setLeading(16f, 0f);
cell3.setHorizontalAlignment(Element.ALIGN_RIGHT);

cell1.setBorder(Rectangle.NO_BORDER);
cell2.setBorder(Rectangle.NO_BORDER);
cell3.setBorder(Rectangle.NO_BORDER);
table.addCell(cell1);
table.addCell(cell2);    
table.addCell(cell3);    


cell1 = new PdfPCell(new Paragraph(MSISDN,FontFactory.getFont(FontFactory.COURIER,9)));
cell2 = new PdfPCell(new Paragraph(""));
cell3 = new PdfPCell(new Paragraph(DuzenlemeSaati,FontFactory.getFont(FontFactory.COURIER,9)));
cell1.setLeading(16f, 0f);
cell3.setLeading(16f, 0f);
cell1.setHorizontalAlignment(Element.ALIGN_LEFT);
cell3.setHorizontalAlignment(Element.ALIGN_RIGHT);

cell1.setBorder(Rectangle.NO_BORDER);
cell2.setBorder(Rectangle.NO_BORDER);
cell3.setBorder(Rectangle.NO_BORDER);
table.addCell(cell1);
table.addCell(cell2);    
table.addCell(cell3);   

cell1 = new PdfPCell(new Paragraph(""));
cell2 = new PdfPCell(new Paragraph(""));
cell3 = new PdfPCell(new Paragraph(DuzenlemeTarihi,FontFactory.getFont(FontFactory.COURIER,9)));
cell3.setLeading(16f, 0f);
cell3.setHorizontalAlignment(Element.ALIGN_RIGHT);

cell1.setBorder(Rectangle.NO_BORDER);
cell2.setBorder(Rectangle.NO_BORDER);
cell3.setBorder(Rectangle.NO_BORDER);
table.addCell(cell1);
table.addCell(cell2);    
table.addCell(cell3);

cell1 = new PdfPCell(new Paragraph(" "));
cell2 = new PdfPCell(new Paragraph(" "));
cell3 = new PdfPCell(new Paragraph(" "));
cell1.setLeading(45f, 0f);
cell1.setBorder(Rectangle.NO_BORDER);
cell2.setBorder(Rectangle.NO_BORDER);
cell3.setBorder(Rectangle.NO_BORDER);

table.addCell(cell1);
table.addCell(cell2);    
table.addCell(cell3);

cell1 = new PdfPCell(new Paragraph(izahat,FontFactory.getFont(FontFactory.COURIER,9)));
cell1.setHorizontalAlignment(Element.ALIGN_LEFT);
cell1.setColspan(3);
cell1.setBorder(Rectangle.NO_BORDER);  
table.addCell(cell1);

cell1 = new PdfPCell(new Paragraph(" "));
cell2 = new PdfPCell(new Paragraph(" "));
cell3 = new PdfPCell(new Paragraph(" "));
cell1.setLeading(75f, 0f);
cell1.setBorder(Rectangle.NO_BORDER);
cell2.setBorder(Rectangle.NO_BORDER);
cell3.setBorder(Rectangle.NO_BORDER);

table.addCell(cell1);
table.addCell(cell2);    
table.addCell(cell3);

cell1 = new PdfPCell(new Paragraph(kopyayazi,FontFactory.getFont(FontFactory.COURIER,9)));
cell1.setHorizontalAlignment(Element.ALIGN_CENTER);
cell1.setColspan(3);
cell1.setBorder(Rectangle.NO_BORDER);  
table.addCell(cell1);

cell1 = new PdfPCell(new Paragraph(TutarYazi,FontFactory.getFont(FontFactory.COURIER,9)));
cell1.setHorizontalAlignment(Element.ALIGN_LEFT);
cell1.setColspan(2);
cell3 = new PdfPCell(new Paragraph(ToplamTutar,FontFactory.getFont(FontFactory.COURIER,9)));
cell3.setHorizontalAlignment(Element.ALIGN_RIGHT);
cell1.setLeading(16f, 0f);
cell3.setLeading(16f, 0f);
cell1.setBorder(Rectangle.NO_BORDER);
cell3.setBorder(Rectangle.NO_BORDER);

table.addCell(cell1);
table.addCell(cell3);
document.add(table);
document.newPage();
    } catch (DocumentException de) {
        de.printStackTrace();
        System.err.println("document: " + de.getMessage());
    }
    
    document.close();

那么，当页面上的字符已经打印出来时，如何将点阵打印机与连续纸张一起使用，并停止纸张滚动