java导出pdf（纯代码实现）

Xiao5xiao1222023-07-20 21:37

java导出pdf

在项目开发中，产品的需求越来越奇葩啦，开始文件下载都是下载为excel的，做着做着需求竟然变了，要求能导出pdf。导出pdf倒也不是特别大的问题关键就是麻烦。

导出pdf我知道的一共有3中方法：

方法一：利用模板导出，但是首先编辑模板的工具不好找，现有的国外的工具要收费，所以放弃了这个。

方法二：利用HTML页面导出，奈何自己不会写HTML，前端忙没时间帮忙写。本着求人不如靠己的想法就选择了第三种比较麻烦的方法，自己用table画。

方法三：自己用纯代码画格式（可调字体大小，颜色，对复杂没有规则的数据都可以）

首先必须导入的依赖有

java 复制代码 
<!--导出pdf所需包-->
        <dependency>
            <groupId>com.itextpdf</groupId>
            <artifactId>itextpdf</artifactId>
            <version>5.5.10</version>
        </dependency>
        <dependency>
            <groupId>com.itextpdf</groupId>
            <artifactId>itext-asian</artifactId>
            <version>5.2.0</version>
        </dependency>

然后就是一顿代码输出

先把效果贴上

然后是代码部分

java 复制代码 
@ApiOperation(value = "导出")
    @PostMapping("/download")
    @SneakyThrows(Exception.class)
    public void download(@RequestBody @Valid FumigationDTO fumigationDTO, HttpServletResponse response, HttpServletRequest request) {
        // 防止日志记录获取session异常
        request.getSession();
        // 设置编码格式
        response.setContentType("application/pdf;charset=UTF-8");
        response.setCharacterEncoding("utf-8");
        String fileName = URLEncoder.encode("下载的PDF名称", "UTF-8");
        response.setHeader("Content-disposition", "attachment;filename*=utf-8''" + fileName + ".pdf");
        fumigationService.download(fumigationDTO, response);
    }

业务层

java 复制代码 
@Override
    public void download(FumigationDTO fumigationDTO, HttpServletResponse response) throws IOException {
    	//要下载的数据查询数据部分我去掉了有需要自己根据业务取
        FumigationDowloadVO fumigationDowloadVO = new FumigationDowloadVO();
        

        // 定义全局的字体静态变量
        Font titlefont;
        Font headfont;
        Font keyfont = null;
        Font textfont = null;
        Font content = null;
        // 最大宽度
        try {
            // 不同字体（这里定义为同一种字体：包含不同字号、不同style）
            BaseFont bfChinese = BaseFont.createFont("STSong-Light", "UniGB-UCS2-H", BaseFont.NOT_EMBEDDED);
            titlefont = new Font(bfChinese, 16, Font.BOLD);
            headfont = new Font(bfChinese, 14, Font.BOLD);
            keyfont = new Font(bfChinese, 10, Font.BOLD);
            textfont = new Font(bfChinese, 15, Font.NORMAL);
            content = new Font(bfChinese, 10, Font.NORMAL);

        } catch (Exception e) {
            e.printStackTrace();
        }
        BaseFont bf;
        Font font = null;
        try {
            //创建字体
            bf = BaseFont.createFont( "STSong-Light", "UniGB-UCS2-H",
                    BaseFont.NOT_EMBEDDED);
            //使用字体并给出颜色
            font = new Font(bf,20,Font.BOLD,BaseColor.BLACK);
        } catch (Exception e) {
            e.printStackTrace();
        }

        Document document = new Document(new RectangleReadOnly(842F, 595F));
        try {
            PdfWriter.getInstance(document,response.getOutputStream());
            //打开生成的pdf文件
            document.open();
            //设置内容
            Paragraph paragraph = new Paragraph("熏蒸备案回执",font);
            paragraph.setAlignment(1);
            //引用字体
            document.add(paragraph);

            // 设置表格的列宽和列数
            float[] widths = {25f,25f,25f,25f,25f,25f};
            PdfPTable table = new PdfPTable(widths);
            table.setSpacingBefore(20f);
            // 设置表格宽度为100%
            table.setWidthPercentage(100.0F);
            table.setHeaderRows(1);
            table.getDefaultCell().setHorizontalAlignment(1);
            PdfPCell cell = null;
            //第一行
            cell = new PdfPCell(new Paragraph("熏蒸备案编码",content));
            cell.setVerticalAlignment(Element.ALIGN_MIDDLE);
            cell.setHorizontalAlignment(Element.ALIGN_CENTER);
            cell.setFixedHeight(30);
            table.addCell(cell);

            cell = new PdfPCell(new Paragraph(fumigationDowloadVO.getXzbm()));
            cell.setVerticalAlignment(Element.ALIGN_MIDDLE);
            cell.setHorizontalAlignment(Element.ALIGN_CENTER);
            table.addCell(cell);

            cell = new PdfPCell(new Paragraph("熏蒸备案时间",content));
            cell.setVerticalAlignment(Element.ALIGN_MIDDLE);
            cell.setHorizontalAlignment(Element.ALIGN_CENTER);
            table.addCell(cell);

            cell = new PdfPCell(new Paragraph(CheckVerifyUtil.dateToString4(fumigationDowloadVO.getSqxzrq())));
            cell.setVerticalAlignment(Element.ALIGN_MIDDLE);
            cell.setHorizontalAlignment(Element.ALIGN_CENTER);
            table.addCell(cell);

            cell = new PdfPCell(new Paragraph("申请备案单位",content));
            cell.setVerticalAlignment(Element.ALIGN_MIDDLE);
            cell.setHorizontalAlignment(Element.ALIGN_CENTER);
            table.addCell(cell);

            cell = new PdfPCell(new Paragraph(fumigationDowloadVO.getDwmc(),content));
            cell.setVerticalAlignment(Element.ALIGN_MIDDLE);
            cell.setHorizontalAlignment(Element.ALIGN_CENTER);
            table.addCell(cell);
            //第二行
            cell = new PdfPCell(new Paragraph("熏蒸作业库点",content));
            cell.setVerticalAlignment(Element.ALIGN_MIDDLE);
            cell.setHorizontalAlignment(Element.ALIGN_CENTER);
            cell.setFixedHeight(30);
            table.addCell(cell);

            cell = new PdfPCell(new Paragraph(fumigationDowloadVO.getKdmc(),content));
            cell.setVerticalAlignment(Element.ALIGN_MIDDLE);
            cell.setHorizontalAlignment(Element.ALIGN_CENTER);
            table.addCell(cell);

            cell = new PdfPCell(new Paragraph("负责人",content));
            cell.setVerticalAlignment(Element.ALIGN_MIDDLE);
            cell.setHorizontalAlignment(Element.ALIGN_CENTER);
            table.addCell(cell);

            cell = new PdfPCell(new Paragraph(fumigationDowloadVO.getFzr(),content));
            cell.setVerticalAlignment(Element.ALIGN_MIDDLE);
            cell.setHorizontalAlignment(Element.ALIGN_CENTER);
            table.addCell(cell);

            cell = new PdfPCell(new Paragraph("联系电话",content));
            cell.setVerticalAlignment(Element.ALIGN_MIDDLE);
            cell.setHorizontalAlignment(Element.ALIGN_CENTER);
            table.addCell(cell);

            cell = new PdfPCell(new Paragraph(fumigationDowloadVO.getFzrdh(),content));
            cell.setVerticalAlignment(Element.ALIGN_MIDDLE);
            cell.setHorizontalAlignment(Element.ALIGN_CENTER);
            table.addCell(cell);
            //第三行
            cell = new PdfPCell(new Paragraph("单据状态",content));
            cell.setVerticalAlignment(Element.ALIGN_MIDDLE);
            cell.setHorizontalAlignment(Element.ALIGN_CENTER);
            cell.setFixedHeight(30);
            table.addCell(cell);

            cell = new PdfPCell(new Paragraph(shzt(fumigationDowloadVO.getShzt()),content));
            cell.setVerticalAlignment(Element.ALIGN_MIDDLE);
            cell.setHorizontalAlignment(Element.ALIGN_CENTER);
            table.addCell(cell);

            cell = new PdfPCell(new Paragraph("审核时间",content));
            cell.setVerticalAlignment(Element.ALIGN_MIDDLE);
            cell.setHorizontalAlignment(Element.ALIGN_CENTER);
            table.addCell(cell);

            cell = new PdfPCell(new Paragraph(CheckVerifyUtil.dateToString5(fumigationDowloadVO.getShsj()),content));
            cell.setVerticalAlignment(Element.ALIGN_MIDDLE);
            cell.setHorizontalAlignment(Element.ALIGN_CENTER);
            table.addCell(cell);

            cell = new PdfPCell(new Paragraph(" ",content));
            cell.setVerticalAlignment(Element.ALIGN_MIDDLE);
            cell.setHorizontalAlignment(Element.ALIGN_CENTER);
            table.addCell(cell);

            cell = new PdfPCell(new Paragraph(" ",content));
            cell.setVerticalAlignment(Element.ALIGN_MIDDLE);
            cell.setHorizontalAlignment(Element.ALIGN_CENTER);
            table.addCell(cell);

            // 设置表格的列宽和列数
            float[] widths2 = {25f,25f,25f,25f,25f,25f};
            PdfPTable table2 = new PdfPTable(widths2);
            table2.setSpacingBefore(20f);
            // 设置表格宽度为100%
            table2.setWidthPercentage(100.0F);
            table2.setHeaderRows(1);
            table2.getDefaultCell().setHorizontalAlignment(1);

            //人员列表-第四行
            cell = new PdfPCell(new Paragraph("姓名",content));
            cell.setVerticalAlignment(Element.ALIGN_MIDDLE);
            cell.setHorizontalAlignment(Element.ALIGN_CENTER);
            cell.setFixedHeight(20);
            table2.addCell(cell);

            cell = new PdfPCell(new Paragraph("职务",content));
            cell.setVerticalAlignment(Element.ALIGN_MIDDLE);
            cell.setHorizontalAlignment(Element.ALIGN_CENTER);
            table2.addCell(cell);

            cell = new PdfPCell(new Paragraph("职业资格",content));
            cell.setVerticalAlignment(Element.ALIGN_MIDDLE);
            cell.setHorizontalAlignment(Element.ALIGN_CENTER);
            table2.addCell(cell);

            cell = new PdfPCell(new Paragraph("身体状况",content));
            cell.setVerticalAlignment(Element.ALIGN_MIDDLE);
            cell.setHorizontalAlignment(Element.ALIGN_CENTER);
            table2.addCell(cell);

            cell = new PdfPCell(new Paragraph("熏蒸任务分工",content));
            cell.setVerticalAlignment(Element.ALIGN_MIDDLE);
            cell.setHorizontalAlignment(Element.ALIGN_CENTER);
            table2.addCell(cell);

            cell = new PdfPCell(new Paragraph("是否外包",content));
            cell.setVerticalAlignment(Element.ALIGN_MIDDLE);
            cell.setHorizontalAlignment(Element.ALIGN_CENTER);
            table2.addCell(cell);
            //人员列表数据-第五行
            if(fumigationDowloadVO.getProples().size() > 0){
                for (RecordFumigationPeople prople : fumigationDowloadVO.getProples()) {
                    PdfPCell cell1 = new PdfPCell(new Paragraph(prople.getXm(), content));
                    PdfPCell cell2 = new PdfPCell(new Paragraph(prople.getZw(), content));
                    PdfPCell cell3 = new PdfPCell(new Paragraph(prople.getZyzg(), content));
                    PdfPCell cell4 = new PdfPCell(new Paragraph(prople.getStzk(), content));
                    PdfPCell cell5 = new PdfPCell(new Paragraph(prople.getXzrwfg(), content));
                    PdfPCell cell6 = new PdfPCell(new Paragraph(prople.getSfwb(), content));

                    //单元格对齐方式
                    cell1.setHorizontalAlignment(Element.ALIGN_CENTER);
                    cell1.setVerticalAlignment(Element.ALIGN_MIDDLE);
                    cell1.setFixedHeight(20);
                    //单元格垂直对齐方式
                    cell2.setHorizontalAlignment(Element.ALIGN_CENTER);
                    cell2.setVerticalAlignment(Element.ALIGN_MIDDLE);

                    cell3.setHorizontalAlignment(Element.ALIGN_CENTER);
                    cell3.setVerticalAlignment(Element.ALIGN_MIDDLE);

                    cell4.setHorizontalAlignment(Element.ALIGN_CENTER);
                    cell4.setVerticalAlignment(Element.ALIGN_MIDDLE);

                    cell5.setHorizontalAlignment(Element.ALIGN_CENTER);
                    cell5.setVerticalAlignment(Element.ALIGN_MIDDLE);

                    cell6.setHorizontalAlignment(Element.ALIGN_CENTER);
                    cell6.setVerticalAlignment(Element.ALIGN_MIDDLE);

                    table2.addCell(cell1);
                    table2.addCell(cell2);
                    table2.addCell(cell3);
                    table2.addCell(cell4);
                    table2.addCell(cell5);
                    table2.addCell(cell6);
                }
            }

            // 设置表格的列宽和列数
            float[] widths3 = {25f,25f,25f,25f,25f};
            PdfPTable table3 = new PdfPTable(widths3);
            table3.setSpacingBefore(20f);
            // 设置表格宽度为100%
            table3.setWidthPercentage(100.0F);
            table3.setHeaderRows(1);
            table3.getDefaultCell().setHorizontalAlignment(1);

            //实施储粮信息
            cell = new PdfPCell(new Paragraph("仓房",content));
            cell.setVerticalAlignment(Element.ALIGN_MIDDLE);
            cell.setHorizontalAlignment(Element.ALIGN_CENTER);
            cell.setFixedHeight(20);
            table3.addCell(cell);

            cell = new PdfPCell(new Paragraph("货位",content));
            cell.setVerticalAlignment(Element.ALIGN_MIDDLE);
            cell.setHorizontalAlignment(Element.ALIGN_CENTER);
            table3.addCell(cell);

            cell = new PdfPCell(new Paragraph("粮食品种",content));
            cell.setVerticalAlignment(Element.ALIGN_MIDDLE);
            cell.setHorizontalAlignment(Element.ALIGN_CENTER);
            table3.addCell(cell);

            cell = new PdfPCell(new Paragraph("计划熏蒸开始时间",content));
            cell.setVerticalAlignment(Element.ALIGN_MIDDLE);
            cell.setHorizontalAlignment(Element.ALIGN_CENTER);
            table3.addCell(cell);

            cell = new PdfPCell(new Paragraph("计划熏蒸结束时间",content));
            cell.setVerticalAlignment(Element.ALIGN_MIDDLE);
            cell.setHorizontalAlignment(Element.ALIGN_CENTER);
            table3.addCell(cell);

            if(fumigationDowloadVO.getDtls().size() > 0){
                for (RecordFumigationDtlVO dtl : fumigationDowloadVO.getDtls()) {
                    PdfPCell cell1 = new PdfPCell(new Paragraph(dtl.getCfmc(), content));
                    PdfPCell cell2 = new PdfPCell(new Paragraph(dtl.getHwmc(), content));
                    PdfPCell cell3 = new PdfPCell(new Paragraph(dtl.getLspzmc(), content));
                    PdfPCell cell4 = new PdfPCell(new Paragraph(CheckVerifyUtil.dateToString4(dtl.getJhxzksrq()), content));
                    PdfPCell cell5 = new PdfPCell(new Paragraph(CheckVerifyUtil.dateToString4(dtl.getJhxzjsrq()), content));
                    //设置居中
                    cell1.setHorizontalAlignment(Element.ALIGN_CENTER);
                    cell1.setVerticalAlignment(Element.ALIGN_MIDDLE);
                    cell1.setFixedHeight(20);

                    cell2.setHorizontalAlignment(Element.ALIGN_CENTER);
                    cell2.setVerticalAlignment(Element.ALIGN_MIDDLE);

                    cell3.setHorizontalAlignment(Element.ALIGN_CENTER);
                    cell3.setVerticalAlignment(Element.ALIGN_MIDDLE);

                    cell4.setHorizontalAlignment(Element.ALIGN_CENTER);
                    cell4.setVerticalAlignment(Element.ALIGN_MIDDLE);

                    cell5.setHorizontalAlignment(Element.ALIGN_CENTER);
                    cell5.setVerticalAlignment(Element.ALIGN_MIDDLE);

                    table3.addCell(cell1);
                    table3.addCell(cell2);
                    table3.addCell(cell3);
                    table3.addCell(cell4);
                    table3.addCell(cell5);

                }
            }

            document.add(new Paragraph("\n"));
            document.add(new Paragraph("▋ 基本信息",content));
            document.add(new Paragraph("\n"));

            document.add(table);

            document.add(new Paragraph("\n"));
            document.add(new Paragraph("▋ 基本信息",content));
            document.add(new Paragraph("\n"));

            document.add(table2);

            document.add(new Paragraph("\n"));
            document.add(new Paragraph("▋ 熏蒸作业储粮粮情",content));
            document.add(new Paragraph("\n"));

            document.add(table3);
			//关闭文档
            document.close();


        } catch (DocumentException e) {
            e.printStackTrace();
            log.error("导出pdf失败:{}",e);
        }
    }

然后就可以了直接导出pdf。

相关推荐
Swift社区1 小时前
在 Swift 中实现字符串分割问题：以字典中的单词构造句子
开发语言·ios·swift
没头脑的ht1 小时前
Swift内存访问冲突
开发语言·ios·swift
没头脑的ht1 小时前
Swift闭包的本质
开发语言·ios·swift
wjs20241 小时前
Swift 数组
开发语言
吾日三省吾码2 小时前
JVM 性能调优
java
stm 学习ing2 小时前
FPGA 第十讲 避免latch的产生
c语言·开发语言·单片机·嵌入式硬件·fpga开发·fpga
湫ccc3 小时前
《Python基础》之字符串格式化输出
开发语言·python
弗拉唐3 小时前
springBoot，mp，ssm整合案例
java·spring boot·mybatis
CodeCraft Studio4 小时前
【实用技能】使用 TX Text Control 创建带有嵌入式附件的 PDF 文档
pdf·asp.net·.net
热门推荐
01ICLR24大模型提示(1/11) | BadChain：大型语言模型的后门思维链提示02PyTorch机器学习实现液态神经网络03【HarmonyOS】HUAWEI DevEco Studio 下载地址汇总04【音视频 | opus】opus编解码库(opus-1.4)详细介绍以及使用——附带解码示例代码05Coze扣子平台完整体验和实践（附国内和国际版对比）06(欧拉)openEuler系统添加网卡文件配置流程、(欧拉)openEuler系统手动配置ipv6地址流程、(欧拉)openEuler系统网络管理说明07IT专业入门，高考假期预习指南08玄机平台应急响应—webshell查杀09RAG 实践- Ollama+RagFlow 部署本地知识库10〔AI 绘画〕Stable Diffusion 之 解决绘制多人或面部很小的人物时面部崩坏问题 篇