Java实现PDF导出功能

一、添加依赖

 <dependency>            <groupId>com.lowagiegroupId>            <artifactId>itextartifactId>            <version>2.1.5version>        dependency>

二、实现示例代码

• 如下代码中使用了 【SIMYOU.TTF】幼圆字体，根据需要可以自行下载

package com.lyp;import com.lowagie.text.*;import com.lowagie.text.Font;import com.lowagie.text.pdf.BaseFont;import com.lowagie.text.pdf.PdfPCell;import com.lowagie.text.pdf.PdfPTable;import com.lowagie.text.pdf.PdfWriter;import java.io.File;import java.io.FileNotFoundException;import java.io.FileOutputStream;import java.io.IOException;import java.text.SimpleDateFORMat;import java.util.*;import java.util.List;public class downLoadPDF {    public static void main(String[] args) {        String fileName = "test.pdf";        String path = "D:pdf/";        try {            //创建文档，设置页面大小、左右上下边距            Document document = new Document();            //处理中文显示问题，使用资源字体            BaseFont bfChinese = BaseFont.createFont("/font/SIMYOU.TTF",BaseFont.IDENTITY_H, BaseFont.NOT_EMBEDDED);            Font dateTitle = new Font(bfChinese,7,Font.NORMAL);            Font title = new Font(bfChinese,12,Font.BOLD);//文字加粗            Font textFont = new Font(bfChinese,7,Font.NORMAL);//文字正常            //给出输出路径            PdfWriter.getInstance(document, new FileOutputStream(path+fileName));            //打开文档            document.open();            //标题            PdfPTable tableTitle = new PdfPTable(3);            PdfPTable codeTitle = new PdfPTable(1);            //生成一个7列的表格            PdfPTable table = new PdfPTable(7);            //定义每个单元格的宽度            float[] widthsHeaderTitle = {1f,1f,1f};            float[] widthsCodeTitle = {1f};            float[] widthsHeader = {1f,1f,1f,1f,1f,1f,2f};            float lineHeight = (float)20.0;            //设置表格每一格的宽度            tableTitle.setWidths(widthsHeaderTitle);            codeTitle.setWidths(widthsCodeTitle);            table.setWidths(widthsHeader);            //设置表格总体宽度            tableTitle.setWidthPercentage(100);            codeTitle.setWidthPercentage(100);            table.setWidthPercentage(100);            int colSpan = 1;            SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");            Date date = new Date(System.currentTimeMillis());            //添加标题            createTableCellLeft("导出人：行如火", textFont, tableTitle, lineHeight, colSpan);            createTableCellCenter("确认出差记录表", title, tableTitle, lineHeight, colSpan);            createTableCellRight(formatter.format(date), dateTitle, tableTitle, lineHeight, colSpan);            document.add(tableTitle);            createTableCellRight("功能码： XXXXXXXXX",textFont, codeTitle, lineHeight, colSpan);            document.add(codeTitle);            document.add(new Paragraph("\n"));            String[] array = {"报表生成日期 ","状态 ", "经办人员 ", "提交时间 ","复核人员 ", "复核时间 ", "情况补充 "};            for (String s : array) {                createTableCell(s, textFont, table, lineHeight, colSpan);            }            List<Map<String, Object>> dataResult = getResult();            for (Map<String, Object> map : dataResult) {                String dataTime = map.get("dateTime") != null?map.get("dateTime").toString():"0";                String status = "0";                if (null != map.get("status")) {                    if ("0".equals(map.get("status"))) {                        status = "待确认";                    }                    if ("1".equals(map.get("status"))) {                        status = "待复核";                    }                    if ("2".equals(map.get("status"))) {                        status = "已复核";                    }                }                String creator = map.get("creator") != null?map.get("creator").toString():"0";                String createTime = map.get("createTime") != null?map.get("createTime").toString():"0";                String updator = map.get("updator") != null?map.get("updator").toString():"0";                String updateTime = map.get("updateTime") != null?map.get("updateTime").toString():"0";                String description = map.get("description") != null?map.get("description").toString():"0";                createTableCell(dataTime, textFont, table, lineHeight, colSpan);                createTableCell(status, textFont, table, lineHeight, colSpan);                createTableCell(creator, textFont, table, lineHeight, colSpan);                createTableCell(createTime, textFont, table, lineHeight, colSpan);                createTableCell(updator, textFont, table, lineHeight, colSpan);                createTableCell(updateTime, textFont, table, lineHeight, colSpan);                createTableCell(description, textFont, table, lineHeight, colSpan);            }            document.add(table);            document.close();        } catch (DocumentException e) {            e.printStackTrace();        } catch (FileNotFoundException e) {            e.printStackTrace();        } catch (IOException e) {            e.printStackTrace();        }        File file = new File(fileName);        System.out.println(file);    }    private static void createTableCell(String text, Font font, PdfPTable table, float lineHeight, int colSapn) {        PdfPCell cell;        cell = new PdfPCell(new Paragraph(text,font));        //合并单元格列        cell.setColspan(colSapn);        //设置水平居中        cell.setHorizontalAlignment(Element.ALIGN_CENTER);        //设置垂直居中        cell.setVerticalAlignment(Element.ALIGN_MIDDLE);        cell.setFixedHeight(lineHeight);        //将单元格内容添加到表格中        table.addCell(cell);    }    private static void createTableCellLeft(String text, Font font, PdfPTable table, float lineHeight ,int colSapn) {        PdfPCell cell;        cell = new PdfPCell(new Paragraph(text,font));        //合并单元格列        cell.setColspan(colSapn);        //设置水平        cell.setHorizontalAlignment(Element.ALIGN_LEFT);        //设置垂直        cell.setVerticalAlignment(Element.ALIGN_BOTTOM);        cell.setFixedHeight(lineHeight);        cell.setBorderWidthRight(0);        cell.setBorderWidthBottom(0);        cell.setBorderWidthLeft(0);        cell.setBorderWidthTop(0);        //将单元格内容添加到表格中        table.addCell(cell);    }    private static void createTableCellCenter(String text, Font font, PdfPTable table, float lineHeight ,int colSapn) {        PdfPCell cell;        cell = new PdfPCell(new Paragraph(text,font));        //合并单元格列        cell.setColspan(colSapn);        //设置水平居中        cell.setHorizontalAlignment(Element.ALIGN_CENTER);        //设置垂直居中        cell.setVerticalAlignment(Element.ALIGN_MIDDLE);        cell.setFixedHeight(lineHeight);        cell.setBorderWidthLeft(0);        cell.setBorderWidthRight(0);        cell.setBorderWidthBottom(0);        cell.setBorderWidthTop(0);        //将单元格内容添加到表格中        table.addCell(cell);    }    private static void createTableCellRight(String text, Font font, PdfPTable table, float lineHeight , int colSapn) {        PdfPCell cell;        cell = new PdfPCell(new Paragraph(text,font));        //合并单元格列        cell.setColspan(colSapn);        //设置水平        cell.setHorizontalAlignment(Element.ALIGN_RIGHT);        //设置垂直        cell.setVerticalAlignment(Element.ALIGN_TOP);        cell.setFixedHeight(lineHeight);        //将单元格内容添加到表格中        //去除边框        cell.setBorderWidthLeft(0);        cell.setBorderWidthBottom(0);        cell.setBorderWidthRight(0);        cell.setBorderWidthTop(0);        table.addCell(cell);    }    private static List<Map<String, Object>> getResult() {        List<Map<String, Object>> result = new ArrayList<>();        for (int i = 0; i < 10; i++) {            Map<String, Object> map = new HashMap<>();            map.put("dateTime", "2022/10/11");            map.put("creator", "行如火");            map.put("createTime", "2022/10/10");            map.put("updator", "疾如风");            map.put("updateTime", "2022/10/11");            if(i == 0) {                map.put("status", "0");                map.put("description", "测试导出PDF");            } else if (i < 4){                map.put("status", "1");                map.put("description", "测试导出PDF"+i);            } else {                map.put("status", "2");                map.put("description", "测试导出PDF"+i);            }            result.add(map);        }        System.out.println(result);        return result;    }}

三、效果展示

• 对应目录下生成test.pdf 文件
  
• 生成效果如下所示：
  
  

来源地址：https://blog.csdn.net/weixin_46822367/article/details/127401879