itextpdf导出pdf表格

先看效果：

 

 两个依赖

<!-- itext依赖 https://mvnrepository.com/artifact/com.itextpdf/itextpdf -->
<dependency>
    <groupId>com.itextpdf</groupId>
    <artifactId>itextpdf</artifactId>
    <version>5.5.13</version>
</dependency>
<!-- 中文依赖 https://mvnrepository.com/artifact/com.itextpdf/itext-asian -->
<dependency>
    <groupId>com.itextpdf</groupId>
    <artifactId>itext-asian</artifactId>
    <version>5.2.0</version>
</dependency>

public void exportSubmitPdf(Mapx condition, HttpServletResponse response) throws IOException, DocumentException {
        String registrationCode = condition.getString("registrationCode");
        String offlineDisposal = condition.getString("offlineDisposal", "");
        String onlineDisposal = condition.getString("onlineDisposal", "");
        String classifyName = condition.getString("classifyName", "");
        List<Submits> submitsList = workSubmitsRepository.queryWorkSubmitsByRegistrationCode(registrationCode);
        Submits submits = submitsList.get(0); //下载最后一个阶段
        String fileName = submits.getTitle() + new SimpleDateFormat("yyyyMMdd").format(new Date()) + ".pdf";
        response.setContentType("application/octet-stream;charset=utf-8");
        response.setHeader("Content-Disposition", "attachment;filename="+new String(fileName.getBytes("gb2312"), "ISO8859-1"));
        // 1-创建文本对象 Document
        Document document = new Document(PageSize.A4);
        // 2-初始化 pdf输出对象 PdfWriter
        PdfWriter.getInstance(document, response.getOutputStream());
        // 3-打开 Document
        document.open();
        // 4-往 Document 添加内容
        // 中文字体（不加的话 中文会变为空白）
        BaseFont bfChinese = BaseFont.createFont("STSongStd-Light", "UniGB-UCS2-H", BaseFont.NOT_EMBEDDED);
        Font fontChinese = new Font(bfChinese, 12, Font.NORMAL);// 中文、12、正常

        int colNumber = 6;
        // 跨行跨列表格
        PdfPTable table = new PdfPTable(colNumber); // 6列表格
        PdfPCell cell; // 单元格
        table.addCell(new PdfPCell(new Phrase("上报单位", fontChinese)));
        cell = new PdfPCell(new Phrase(submits.getSendOrgName(), fontChinese));
        cell.setColspan(2); //2列
        table.addCell(cell);

        table.addCell(new PdfPCell(new Phrase("登记编号", fontChinese)));
        cell = new PdfPCell(new Phrase(submits.getRegistrationCode(), fontChinese));
        cell.setColspan(2); //2列
        table.addCell(cell);

        table.addCell(new PdfPCell(new Phrase("标题", fontChinese)));
        cell = new PdfPCell(new Phrase(submits.getTitle(), fontChinese));
        cell.setColspan(5);
        table.addCell(cell);

        table.addCell(new PdfPCell(new Phrase("链接", fontChinese)));
        cell = new PdfPCell(new Phrase(submits.getUrl(), fontChinese));
        cell.setColspan(5);
        table.addCell(cell);

        table.addCell(new Phrase("发布时间", fontChinese));
        table.addCell(submits.getPublishtimeStr());

        table.addCell(new Phrase("网站", fontChinese));
        table.addCell(new PdfPCell(new Phrase(submits.getSiteName(), fontChinese)));

        table.addCell(new Phrase("相似数", fontChinese));
        table.addCell(String.valueOf(submits.getSimilar()));

        table.addCell(new PdfPCell(new Phrase("摘要", fontChinese)));
        cell = new PdfPCell(new Phrase(submits.getText(), fontChinese));
        cell.setColspan(5);
        table.addCell(cell);

        String submitsType = String.valueOf(submits.getSubmitsType());
        String level = "潜在";
        switch (submitsType){
            case "1":
                level = "一般";
                break;
            case "2":
                level = "较大";
                break;
            case "3":
                level = "重大";
                break;
            default:
        }
        table.addCell(new Phrase("舆情/事件分级", fontChinese));
        cell = new PdfPCell(new Phrase(level, fontChinese));
        cell.setColspan(2);
        table.addCell(cell);

        table.addCell(new Phrase("舆情/事件分类", fontChinese));
        cell = new PdfPCell(new Phrase(classifyName, fontChinese));
        cell.setColspan(2);
        table.addCell(cell);

        table.addCell(new PdfPCell(new Phrase("情况介绍", fontChinese)));
        cell = new PdfPCell(new Phrase(submits.getIntroducingThe(), fontChinese));
        cell.setColspan(5);
        table.addCell(cell);

        table.addCell(new PdfPCell(new Phrase("处置情况介绍", fontChinese)));
        cell = new PdfPCell(new Phrase(submits.getDisposalSituation(), fontChinese));
        cell.setColspan(5);
        table.addCell(cell);

        table.addCell(new PdfPCell(new Phrase("线下处置", fontChinese)));
        cell = new PdfPCell(new Phrase(offlineDisposal, fontChinese));
        cell.setColspan(5);
        table.addCell(cell);

        table.addCell(new PdfPCell(new Phrase("线上处置", fontChinese)));
        cell = new PdfPCell(new Phrase(onlineDisposal, fontChinese));
        cell.setColspan(5);
        table.addCell(cell);

        table.addCell(new PdfPCell(new Phrase("问题整改", fontChinese)));
        cell = new PdfPCell(new Phrase(submits.getRectification(), fontChinese));
        cell.setColspan(5);
        table.addCell(cell);
        table.addCell(new PdfPCell(new Phrase("责任追究", fontChinese)));
        cell = new PdfPCell(new Phrase(submits.getDuty(), fontChinese));
        cell.setColspan(5);
        table.addCell(cell);

        document.add(table);
        // 5-关闭 Document
        document.close();
    }