Java绘出pdf实现方法

  public InputStream generateLabel(List<Map<String, Object>> ordersList) throws Exception {

        Document document = getDocument();
        ByteArrayOutputStream out = new ByteArrayOutputStream();
        PdfWriter writer = PdfWriter.getInstance(document, out);
        document.open();
        createPdfBody(document, writer, ordersList);
        document.close();
        return new ByteArrayInputStream(out.toByteArray());
    }

    protected void createPdfBody(Document document, PdfWriter writer, List<Map<String, Object>> ordersList) throws Exception {
        PdfPTable table = new PdfPTable(1);
        table.setWidthPercentage(100);
        oneRow(table, ordersList);
        twoRow(table, ordersList);
        threeRow(table, ordersList);
        fourRow(table, ordersList);
        fiveRow(table, ordersList);
        sixRow(table, ordersList);
        sevenRow(table, ordersList);
        eightRow(table, ordersList);
        document.add(table);
    }

    private void oneRow(PdfPTable table, List<Map<String, Object>> ordersList) throws Exception {
        PdfPTable nestedTable = new PdfPTable(2);
        nestedTable.setWidths(new float[] { 0.4f, 0.6f });

        PdfPCell nestedCell1 = new PdfPCell(new Phrase("订单号:", smallFont));
        nestedCell1.setFixedHeight(25);
        nestedCell1.setVerticalAlignment(Element.ALIGN_MIDDLE);
        nestedCell1.setHorizontalAlignment(Element.ALIGN_CENTER);
        nestedTable.addCell(nestedCell1);

        PdfPCell nestedCell2 = new PdfPCell();
        nestedCell2.setFixedHeight(25);
        nestedCell2.setVerticalAlignment(Element.ALIGN_MIDDLE);
        String orderNum = null;
        for (Map map : ordersList) {
            orderNum = (String) map.get("orderNum");
        }
        nestedCell2.addElement(new Phrase(orderNum, smallFont));
        nestedTable.addCell(nestedCell2);

        PdfPCell cell = new PdfPCell(nestedTable);
        cell.setFixedHeight(25);
        table.addCell(cell);
    }

    private void twoRow(PdfPTable table, List<Map<String, Object>> ordersList) throws Exception {
        PdfPTable nestedTable = new PdfPTable(2);
        nestedTable.setWidths(new float[] { 0.4f, 0.6f });

        PdfPCell nestedCell1 = new PdfPCell(new Phrase("寄件人:", smallFont));
        nestedCell1.setFixedHeight(25);
        nestedCell1.setVerticalAlignment(Element.ALIGN_MIDDLE);
        nestedCell1.setHorizontalAlignment(Element.ALIGN_CENTER);
        nestedTable.addCell(nestedCell1);

        PdfPCell nestedCell2 = new PdfPCell();
        nestedCell2.setFixedHeight(25);
        nestedCell2.setVerticalAlignment(Element.ALIGN_MIDDLE);
        String senderName = null;
        for (Map map : ordersList) {
            senderName = (String) map.get("senderName");
        }
        nestedCell2.addElement(new Phrase(senderName, smallFont));
        nestedTable.addCell(nestedCell2);

        PdfPCell cell = new PdfPCell(nestedTable);
        cell.setFixedHeight(25);
        table.addCell(cell);
    }

    private void threeRow(PdfPTable table, List<Map<String, Object>> ordersList) throws Exception {
        PdfPTable nestedTable = new PdfPTable(2);
        nestedTable.setWidths(new float[] { 0.4f, 0.6f });

        PdfPCell nestedCell1 = new PdfPCell(new Phrase("收件人:", smallFont));
        nestedCell1.setFixedHeight(25);
        nestedCell1.setVerticalAlignment(Element.ALIGN_MIDDLE);
        nestedCell1.setHorizontalAlignment(Element.ALIGN_CENTER);
        nestedTable.addCell(nestedCell1);

        PdfPCell nestedCell2 = new PdfPCell();
        nestedCell2.setFixedHeight(25);
        nestedCell2.setVerticalAlignment(Element.ALIGN_MIDDLE);
        String receiverName = null;
        for (Map map : ordersList) {
            receiverName = (String) map.get("receiverName");
        }
        nestedCell2.addElement(new Phrase(receiverName, smallFont));
        nestedTable.addCell(nestedCell2);

        PdfPCell cell = new PdfPCell(nestedTable);
        cell.setFixedHeight(25);
        table.addCell(cell);
    }

    private void fourRow(PdfPTable table, List<Map<String, Object>> ordersList) throws Exception {
        PdfPTable nestedTable = new PdfPTable(2);
        nestedTable.setWidths(new float[] { 0.4f, 0.6f });

        PdfPCell nestedCell1 = new PdfPCell(new Phrase("行李件数:", smallFont));
        nestedCell1.setFixedHeight(25);
        nestedCell1.setVerticalAlignment(Element.ALIGN_MIDDLE);
        nestedCell1.setHorizontalAlignment(Element.ALIGN_CENTER);
        nestedTable.addCell(nestedCell1);

        PdfPCell nestedCell2 = new PdfPCell();
        nestedCell2.setFixedHeight(25);
        nestedCell2.setVerticalAlignment(Element.ALIGN_MIDDLE);
        String packagesNum = null;
        for (Map map : ordersList) {
            packagesNum = String.valueOf(map.get("packagesNum"));
        }
        nestedCell2.addElement(new Phrase(packagesNum, smallFont));
        nestedTable.addCell(nestedCell2);

        PdfPCell cell = new PdfPCell(nestedTable);
        cell.setFixedHeight(25);
        table.addCell(cell);
    }

    private void fiveRow(PdfPTable table, List<Map<String, Object>> ordersList) throws Exception {
        PdfPTable nestedTable = new PdfPTable(2);
        nestedTable.setWidths(new float[] { 0.4f, 0.6f });

        PdfPCell nestedCell1 = new PdfPCell(new Phrase("行李位置:", smallFont));
        nestedCell1.setFixedHeight(25);
        nestedCell1.setVerticalAlignment(Element.ALIGN_MIDDLE);
        nestedCell1.setHorizontalAlignment(Element.ALIGN_CENTER);
        nestedTable.addCell(nestedCell1);

        PdfPCell nestedCell2 = new PdfPCell();
        nestedCell2.setFixedHeight(25);
        nestedCell2.setVerticalAlignment(Element.ALIGN_MIDDLE);
        String shelvesnum = null;
        for (Map map : ordersList) {
            shelvesnum = (String) map.get("shelvesnum");
        }
        nestedCell2.addElement(new Phrase(shelvesnum, smallFont));
        nestedTable.addCell(nestedCell2);

        PdfPCell cell = new PdfPCell(nestedTable);
        cell.setFixedHeight(25);
        table.addCell(cell);
    }

    private void sixRow(PdfPTable table, List<Map<String, Object>> ordersList) throws Exception {
        PdfPTable nestedTable = new PdfPTable(1);
        nestedTable.setWidths(new float[] { 1f });
        PdfPCell nestedCell1 = new PdfPCell(new Phrase("境内运单号与国际运单号对应关系：", smallFont));
        nestedCell1.setFixedHeight(25);
        nestedCell1.setVerticalAlignment(Element.ALIGN_MIDDLE);
        nestedCell1.setHorizontalAlignment(Element.ALIGN_CENTER);
        nestedTable.addCell(nestedCell1);

        PdfPCell cell = new PdfPCell(nestedTable);
        cell.setFixedHeight(25);
        table.addCell(cell);
    }

    private void sevenRow(PdfPTable table, List<Map<String, Object>> ordersList) throws Exception {
        PdfPTable nestedTable = new PdfPTable(1);
        nestedTable.setWidths(new float[] { 1f });

        PdfPCell nestedCell1 = new PdfPCell(new Phrase("境内运单号   - - - - - - 国际运单号", smallFont));
        nestedCell1.setFixedHeight(25);
        nestedCell1.setVerticalAlignment(Element.ALIGN_MIDDLE);
        nestedCell1.setHorizontalAlignment(Element.ALIGN_CENTER);
        nestedTable.addCell(nestedCell1);

        PdfPCell cell = new PdfPCell(nestedTable);
        cell.setFixedHeight(25);
        table.addCell(cell);
    }

    private void eightRow(PdfPTable table, List<Map<String, Object>> ordersList) throws Exception {
        PdfPTable nestedTable = new PdfPTable(1);
        nestedTable.setWidths(new float[] { 1f });

        List<Map<String, String>> uscnList = null;
        String trackNumUsCnStr = "";
        for (int n = 0; n < ordersList.size(); n++) {
            uscnList = (List<Map<String, String>>) ordersList.get(n).get("trackNumUsCnList");
            if (uscnList.size() > 0) {
                for (Map uscnMap : uscnList) {
                    if (uscnMap.get("trackNumUs") == null) {
                        trackNumUsCnStr = trackNumUsCnStr + uscnMap.get("trackNumUs") + " - - - - - - " + " " + "
";
                    } else {
                        trackNumUsCnStr = trackNumUsCnStr + uscnMap.get("trackNumUs") + " - - - - - - " + uscnMap.get("trackNumCn") + "
";
                    }
                }
            }

        }

        PdfPCell nestedCell1 = new PdfPCell(new Phrase(trackNumUsCnStr, smallFont));
        nestedCell1.setFixedHeight(10);
        nestedCell1.setHorizontalAlignment(Element.ALIGN_CENTER);
        nestedTable.addCell(nestedCell1);

        PdfPCell cell = new PdfPCell(nestedTable);
        cell.setFixedHeight(245);
        table.addCell(cell);
    }