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如何用java创建pdf文件,并在顶部显示交替的彩色行和图片_Java_Itext - Fatal编程技术网

如何用java创建pdf文件,并在顶部显示交替的彩色行和图片

如何用java创建pdf文件,并在顶部显示交替的彩色行和图片,java,itext,Java,Itext,我正在使用com.itextpdf.text.*生成pdf文件。下面是我创建pdf文件的代码,该文件的标题、标题和行都高亮显示,我想做的是,创建一个pdf文件,顶部有图像,行有其他颜色,如何使用com.itextpdf.text.* response.setHeader("Content-disposition", "attachment; filename=\"" + reportName + ".pdf\""); response.setContentType("applic

我正在使用
com.itextpdf.text.*
生成pdf文件。下面是我创建pdf文件的代码,该文件的标题、标题和行都高亮显示,我想做的是,创建一个pdf文件,顶部有图像,行有其他颜色,如何使用
com.itextpdf.text.*

response.setHeader("Content-disposition", "attachment; filename=\"" + reportName + ".pdf\"");
        response.setContentType("application/pdf");
        PdfWriter.getInstance(document,response.getOutputStream());

        try {
            document.open();
            addTitlePage(document, reportName);

            //float[] colsWidth = {1.5f,3f,4f,4f,2f};

            List<Float> colsWidth = new ArrayList<Float>();
            int iterator = 1;
           while (iterator <= headerMap.size()) {
               if(iterator==1){
                   colsWidth.add(1.5f); 
               }else{
                colsWidth.add(3f); 
               }
                iterator++;
            }
           float[] floatArray = ArrayUtils.toPrimitive(colsWidth.toArray(new Float[0]), 0.0F);

           PdfPTable table = new PdfPTable(floatArray);
            table.setWidthPercentage(98);
            table.setHorizontalAlignment(Element.ALIGN_CENTER);

            PdfPCell c1 = new PdfPCell();
            for (Iterator it = headerMap.keySet().iterator(); it.hasNext();) {
                String headerName = (String) headerMap.get(it.next());
                c1 = new PdfPCell(new Phrase(headerName, headerFont));
                c1.setBackgroundColor(BaseColor.LIGHT_GRAY);
                table.addCell(c1);
            }
            table.setHeaderRows(1);
            table = custDAO.creadPDFTable(query, table);
            document.add(table);
            document.addAuthor(userViewModel.getUsername());
            document.addCreationDate();
            document.addCreator("POC");
            document.close();
            response.flushBuffer();

public PdfPTable creadPDFTable(String query,PdfPTable table){
        int numberOfColumns=0,sno=1;
        Connection connection = getConnection();
        if (connection != null) {
            try {
                PreparedStatement reportTablePS = connection.prepareStatement(query);
                ResultSet reportTable_rst = reportTablePS.executeQuery();
                ResultSetMetaData reportTable_rsmd = reportTable_rst.getMetaData();
                numberOfColumns = reportTable_rsmd.getColumnCount();
                while (reportTable_rst.next()) {
                    table.addCell(new PdfPCell(new Paragraph(String.valueOf(sno), textFont)));
                            for (int columnIterator = 1; columnIterator <= numberOfColumns; columnIterator++) {
                                 String column = reportTable_rst.getString(columnIterator);
                                 table.addCell(new PdfPCell(new Paragraph(column, textFont)));
                            }
                            sno++;
            }
            } catch (Exception ex) {
                ex.printStackTrace();
            }finally {
                try {
                    closeConnection(connection, null, null);
                } catch (Exception ex) {
                    ex.printStackTrace();
                }
            }
        }
        return table;
    }

private static void addTitlePage(Document document, String reportName) throws DocumentException {
        Paragraph preface = new Paragraph();
        addEmptyLine(preface, 1);
        /**
         * Lets write a big header
         */
        Paragraph paragraph = new Paragraph(reportName, titleFont);
        paragraph.setAlignment(Element.ALIGN_CENTER);
        document.add(paragraph);

        /**
         * Add one empty line
         */
        addEmptyLine(preface, 1);
        document.add(preface);
    }
    private static void addEmptyLine(Paragraph paragraph, int number) {
        for (int i = 0; i < number; i++) {
            paragraph.add(new Paragraph(" "));
        }
    }
那么,如何着手这样做呢

更新:

我想创建一个pdf文件,就像我只想在顶部添加图像一样,并在行中添加类似这样的替换颜色。


(来源:)



(来源:)

您可以使用XSLFO和Apache FOP。这对我有用。为了添加图像,我在XSL中做了一些更改

参考访问

@learner要在顶部添加图像,请在xsl正文部分的第一部分添加图像。我最近为我的代码和它的工作做了这件事。如果您希望在标题上显示该图像,请将其添加到标题部分。+1以获得非常详细的说明。所有示例都可在iText网站上获得:
            Image image = Image.getInstance(path+"images/abi.png");
            image.setAbsolutePosition(40f, 770f);
            image.scaleAbsolute(70f, 50f);
            document.add(image);