Java中Itext生成Pdf,并给PdfCell添加图片

快来打我* 2024-03-23 12:52 75阅读 0赞

#### 文章目录 ####

*  Java中Itext生成Pdf,并给PdfCell添加图片
 *   *  1. 页眉页脚类 \_ 根据实际情况使用，如不需要可忽略此步
     *  2. Pdf生成 \[ PdfCell添加图片参考createHardwarePDF方法的第九行nineRowTalbe \]
     *  3. 实现效果如下图

## Java中Itext生成Pdf,并给PdfCell添加图片 ##

### 1. 页眉页脚类 \_ 根据实际情况使用，如不需要可忽略此步 ###

package com.mediinfo.test;
    
    import com.itextpdf.text.*;
    import com.itextpdf.text.pdf.*;
    import lombok.SneakyThrows;
    import lombok.extern.slf4j.Slf4j;
    
    import java.io.IOException;
    import java.util.Date;
    
    @Slf4j
    public class PdfHeaderFooter extends PdfPageEventHelper {
        
    
        private final static String FONT_PATH = "c:\\windows\\fonts\\SIMSUN.TTC,1";
        private final static String logoPath = "D:\\1.jpg";
    
        //总页码使用的模板对象
        public PdfTemplate totalNumTemplate = null;
    
        /**
         * 重写页面结束时间  分别添加页眉、页脚
         */
        public void onEndPage(PdfWriter writer, Document docment){
        
            try{
        
                this.addPageHeader(writer, docment);
            }catch(Exception e){
        
                log.error("添加页眉出错", e);
            }
    
            try{
        
                this.addPageFooter(writer, docment);
            }catch(Exception e){
        
                log.error("添加页脚出错", e);
            }
        }
    
        /**
         * 页眉
         */
        private void addPageHeader(PdfWriter writer, Document docment) throws IOException, DocumentException {
        
            BaseFont BASE_FONT = BaseFont.createFont("STSong-Light", "UniGB-UCS2-H", false);
    
            //创建字体
            Font textFont = new Font(BASE_FONT, 10f);
    
            //两列  一列logo  一列项目简称   有Logo时添加图片，没有时添加个空值，避免报错
            PdfPTable table = new PdfPTable(2);
            //设置表格宽度 A4纸宽度减去两个边距  比如我一边30  所以减去60
            table.setTotalWidth(PageSize.A4.getWidth()-60);
    
            //logo
            //创建图片对象
            try {
        
                Image logo = Image.getInstance(logoPath);
                //创建一个Phrase对象 再添加一个Chunk对象进去  Chunk里边是图片
                Phrase logoP = new Phrase("", textFont);
                //自己调整偏移值 主要是y轴值
                logoP.add(new Chunk(logo, 0, -5));
                PdfPCell logoCell = new PdfPCell(logoP);
                //只保留底部边框和设置高度
                logoCell.disableBorderSide(13);
                logoCell.setFixedHeight(20);
                table.addCell(logoCell);
            }catch (IOException e){
        
                Phrase nameP = new Phrase("", textFont);
                PdfPCell nameCell = new PdfPCell(nameP);
                nameCell.disableBorderSide(13);
                nameCell.setFixedHeight(20);
                table.addCell(nameCell);
            }
    
            Phrase nameP = new Phrase("页眉右上角显示的内容", textFont);
            PdfPCell nameCell = new PdfPCell(nameP);
            //只保留底部边框和设置高度 设置水平居右和垂直居中
            nameCell.disableBorderSide(13);
            nameCell.setFixedHeight(20);
            nameCell.setHorizontalAlignment(Element.ALIGN_RIGHT);
            nameCell.setVerticalAlignment(Element.ALIGN_MIDDLE);
            table.addCell(nameCell);
    
            //再把表格写到页眉处  使用绝对定位
            table.writeSelectedRows(0, -1, 30, PageSize.A4.getHeight()-5, writer.getDirectContent());
        }
    
        /**
         * 页脚
         */
        private void addPageFooter(PdfWriter writer, Document docment) throws DocumentException, IOException {
        
    
            BaseFont BASE_FONT = BaseFont.createFont("STSong-Light", "UniGB-UCS2-H", false);
            //创建字体
            Font textFont = new Font(BASE_FONT, 10f);
    
            //三列  一列导出人  一列页码   一列时间
            PdfPTable table = new PdfPTable(3);
            //设置表格宽度 A4纸宽度减去两个边距  比如我一边30  所以减去60
            table.setTotalWidth(PageSize.A4.getWidth()-60);
            //仅保留顶部边框
            table.getDefaultCell().disableBorderSide(14);
            table.getDefaultCell().setFixedHeight(40);
            table.getDefaultCell().setVerticalAlignment(Element.ALIGN_MIDDLE);
    
            //导出人
            table.addCell(new Phrase("admin", textFont));
    
            //页码
            //初始化总页码模板
            if(null == totalNumTemplate){
        
                totalNumTemplate = writer.getDirectContent().createTemplate(30, 16);
            }
            //再嵌套一个表格 一左一右  左边当前页码 右边总页码 
            PdfPTable pageNumTable = new PdfPTable(2);
            pageNumTable.setTotalWidth(new float[]{
        80f, 80f});
            pageNumTable.setLockedWidth(true);
            pageNumTable.setPaddingTop(-5f);
            //第一列居右
            pageNumTable.getDefaultCell().disableBorderSide(15);
            pageNumTable.getDefaultCell().setFixedHeight(16);
            pageNumTable.getDefaultCell().setHorizontalAlignment(Element.ALIGN_RIGHT);
            pageNumTable.getDefaultCell().setVerticalAlignment(Element.ALIGN_BOTTOM);
            pageNumTable.addCell(new Phrase(writer.getPageNumber()+" / ", textFont));
            //第二列居左
            Image totalNumImg = Image.getInstance(totalNumTemplate);
            totalNumImg.setPaddingTop(-5f);
            pageNumTable.getDefaultCell().setPaddingTop(-18f);
            pageNumTable.getDefaultCell().setHorizontalAlignment(Element.ALIGN_LEFT);
            pageNumTable.getDefaultCell().setVerticalAlignment(Element.ALIGN_TOP);
            pageNumTable.addCell(totalNumImg);
            //把页码表格添加到页脚表格
            table.addCell(pageNumTable);
    
            //日期
            table.addCell(new Phrase(String.valueOf(new Date()), textFont));
    
            //再把表格写到页脚处  使用绝对定位
            table.writeSelectedRows(0, -1, 30, 40, writer.getDirectContent());
        }
    
        /**
         * 文档关闭事件
         */
        @SneakyThrows
        @Override
        public void onCloseDocument(PdfWriter writer, Document docment){
        
            BaseFont BASE_FONT = BaseFont.createFont("STSong-Light", "UniGB-UCS2-H", false);
            //创建字体
            Font textFont = new Font(BASE_FONT, 10f);
            //将最后的页码写入到总页码模板
            String totalNum = writer.getPageNumber() + "页";
            totalNumTemplate.beginText();
            totalNumTemplate.setFontAndSize(BASE_FONT, 5f);
            totalNumTemplate.showText(totalNum);
            totalNumTemplate.setHeight(16f);
            totalNumTemplate.endText();
            totalNumTemplate.closePath();
        }
    }

### 2. Pdf生成 \[ PdfCell添加图片参考createHardwarePDF方法的第九行nineRowTalbe \] ###

package com.mediinfo.test;
    
    import com.itextpdf.text.*;
    import com.itextpdf.text.pdf.BaseFont;
    import com.itextpdf.text.pdf.PdfPCell;
    import com.itextpdf.text.pdf.PdfPTable;
    import com.itextpdf.text.pdf.PdfWriter;
    
    import java.io.*;
    
    public class PdfUtils {
        
    
        //使用例子
        public static void main(String[] args) throws Exception {
        
            createHardwarePDF("d:/test.pdf");
        }
    
        /**
         * 新建以下两个方法,创建表格内的字体和样式的方法
         *
         * @param str  内容
         * @param font 字体对象
         * @param high 表格高度
         * @return
         * @Param alignCenter 是否水平居中
         * @Param alignMidde  是否垂直居中
         */
        private static PdfPCell mircoSoftFont(String str, Font font, int high, boolean alignCenter, boolean alignMidde) {
        
            PdfPCell pdfPCell = new PdfPCell(new Phrase(str, font));
            pdfPCell.setMinimumHeight(high);
            pdfPCell.setUseAscender(true); // 设置可以居中
            if (alignCenter) {
        
                pdfPCell.setHorizontalAlignment(PdfPCell.ALIGN_CENTER); // 设置水平居中
            }
            if (alignMidde) {
        
                pdfPCell.setVerticalAlignment(PdfPCell.ALIGN_MIDDLE); // 设置垂直居中
            }
            return pdfPCell;
        }
    
        /**
         * @param str  字符串
         * @param font 字体
         * @param high 表格高度
         * @return
         * @Param alignCenter 是否水平居中
         * @Param alignMidde  是否垂直居中
         * @Param haveColor 是否有背景色(灰色)
         */
        private static PdfPCell mircoSoftFont(String str, Font font, int high, boolean alignCenter, boolean alignMidde, boolean haveColor) {
        
            PdfPCell pdfPCell = new PdfPCell(new Phrase(str, font));
            pdfPCell.setMinimumHeight(high);
            pdfPCell.setUseAscender(true); // 设置可以居中
            if (alignCenter) {
        
                pdfPCell.setHorizontalAlignment(PdfPCell.ALIGN_CENTER); // 设置水平居中
            }
            if (alignMidde) {
        
                pdfPCell.setVerticalAlignment(PdfPCell.ALIGN_MIDDLE); // 设置垂直居中
            }
            if (haveColor) {
        
                //颜色代码 RGB
                pdfPCell.setBackgroundColor(new BaseColor(217, 217, 217));
            }
            return pdfPCell;
        }
    
        /*
        将图片插入到PdfCell
         */
    //    private static PdfPCell mircoSoftFont(byte[] iamgeBytes, int high) throws Exception {
        
        private static PdfPCell ImageSet(int high) throws Exception {
        
            byte[] fileByte = toByteArray("D:\\2.jpg");
            Jpeg jpeg = new Jpeg(fileByte);
            jpeg.scaleAbsolute(70, 50);
    
            PdfPCell pdfPCell = new PdfPCell(jpeg);
            pdfPCell.setMinimumHeight(high);
            pdfPCell.setUseAscender(true); // 设置可以居中
            pdfPCell.setHorizontalAlignment(PdfPCell.ALIGN_CENTER); // 设置水平居中
            pdfPCell.setVerticalAlignment(PdfPCell.ALIGN_MIDDLE); // 设置垂直居中
            return pdfPCell;
        }
    
    
        /*
        生成Pdf文档
         */
        public static void createHardwarePDF(String outputPath) throws Exception {
        
            //新建文档对象，页大小为A4纸，然后设置4个边距
            Document document = new Document(PageSize.A4, 20, 20, 30, 30);
            PdfWriter writer = PdfWriter.getInstance(document, new FileOutputStream(outputPath));
    
            //创建字体
            BaseFont baseFont = BaseFont.createFont("STSong-Light", "UniGB-UCS2-H", BaseFont.NOT_EMBEDDED);
            //字体对象
            Font size14font = new Font(baseFont, 14, Font.NORMAL);  //大小为14的正常字体
            Font size10font = new Font(baseFont, 10, Font.BOLD); //大小为10的粗体
            document.open();
    
            // 添加页眉和页码  Add By Zhaof 2022-11-16 实测可用
            // 要修改页眉页脚显示的内容，直接修改PdfHeaderFooterEvent对象的页眉页脚内容即可；
            PdfHeaderFooter event = new PdfHeaderFooter();
            writer.setPageEvent(event);
    
            //添加标题
            PdfPTable tableName = new PdfPTable(1);
            tableName.setWidthPercentage(90);  //设置标题长度占纸张比例
    
            PdfPCell titleCell = mircoSoftFont("个人信息", size14font, 80, true, true);
            titleCell.disableBorderSide(15);
            tableName.addCell(titleCell);
            document.add(tableName);
            //添加第二行的数据
            PdfPTable secondRowTable = new PdfPTable(3); //三列的意思
            secondRowTable.setWidthPercentage(90);
            //这里的数组长度是上面创建的列数,数组的总和为1,就是按比例划分的意思
            secondRowTable.setTotalWidth(new float[]{
        0.18f, 0.32f, 0.5f});
            secondRowTable.addCell(mircoSoftFont(" 姓名: ", size10font, 50, false, true));
            secondRowTable.addCell(mircoSoftFont("李晓明", size10font, 50, false, true));
            secondRowTable.addCell(mircoSoftFont(" 出生日期: 1994年3月14日", size10font, 50, false, true));
            document.add(secondRowTable);
            //第三行数据
            PdfPTable thirdRowTable = new PdfPTable(3);
            thirdRowTable.setWidthPercentage(90);
            thirdRowTable.setTotalWidth(new float[]{
        0.18f, 0.32f, 0.5f});
            thirdRowTable.addCell(mircoSoftFont(" 名族:", size10font, 50, false, true));
            thirdRowTable.addCell(mircoSoftFont("汉族", size10font, 50, false, true));
            thirdRowTable.addCell(mircoSoftFont(" 联系电话: 13888880000", size10font, 50, false, true));
            document.add(thirdRowTable);
            //第四行数据
            PdfPTable fourthRowTable = new PdfPTable(2);
            fourthRowTable.setWidthPercentage(90);
            fourthRowTable.setTotalWidth(new float[]{
        0.66f, 0.34f});
            fourthRowTable.addCell(mircoSoftFont(" 个人描述 :", size10font, 175, false, false));
            fourthRowTable.addCell(mircoSoftFont("个人特长 :", size10font, 175, false, false));
            document.add(fourthRowTable);
            //第五行
            PdfPTable fifthDetailName = new PdfPTable(1);
            fifthDetailName.setWidthPercentage(90);
            fifthDetailName.addCell(mircoSoftFont("获奖记录 :", size14font, 50, true, true));
            document.add(fifthDetailName);
            //第六行
            PdfPTable sisthRowTalbe = new PdfPTable(1);
            sisthRowTalbe.setWidthPercentage(90);
            sisthRowTalbe.addCell(mircoSoftFont(" 联系地址: " + "广东省广州市天河区XXXXXXXXXXXXXXXXXX", size10font, 50, false, true));
            document.add(sisthRowTalbe);
            PdfPTable seventhRowTalbe = new PdfPTable(1);
            seventhRowTalbe.setWidthPercentage(90);
            seventhRowTalbe.addCell(mircoSoftFont(" 毕业院校 ", size14font, 60, true, true));
            document.add(seventhRowTalbe);
            //第八行
            PdfPTable eiththRowTalbe = new PdfPTable(3);
            eiththRowTalbe.setWidthPercentage(90);
            eiththRowTalbe.setTotalWidth(new float[]{
        0.3f, 0.5f, 0.2f});
            eiththRowTalbe.addCell(mircoSoftFont(" 毕业学校", size10font, 50, true, true, true));
            eiththRowTalbe.addCell(mircoSoftFont(" 就读日期", size10font, 50, true, true, true));
            eiththRowTalbe.addCell(mircoSoftFont(" 联系人", size10font, 50, true, true, true));
            document.add(eiththRowTalbe);
            //接下来加List
            String school = "XXX学校";
            String time = "201909  -  2022-06";
            String name = "陈某";
            for (int i = 0; i < 2; i++) {
        
                PdfPTable tempTable = new PdfPTable(3);
                tempTable.setWidthPercentage(90);
                tempTable.setTotalWidth(new float[]{
        0.3f, 0.5f, 0.2f});
                tempTable.addCell(mircoSoftFont(school, size10font, 50, true, true));
                tempTable.addCell(mircoSoftFont(time, size10font, 50, true, true));
                tempTable.addCell(mircoSoftFont(name, size10font, 50, true, true));
                document.add(tempTable);
            }
    
            // 第九行，添加图片
            PdfPTable nineRowTalbe = new PdfPTable(3);
            nineRowTalbe.setWidthPercentage(90);
            nineRowTalbe.setTotalWidth(new float[]{
        0.3f, 0.5f, 0.2f});
            nineRowTalbe.addCell(mircoSoftFont(" test1", size10font, 50, true, true));
            nineRowTalbe.addCell(mircoSoftFont(" test222", size10font, 50, true, true));
            nineRowTalbe.addCell(ImageSet(50));   // 给PdfCell添加图片
            document.add(nineRowTalbe);
    
            document.close();
            writer.close();
        }
    
    
    
        public static byte[] toByteArray(String filename) throws IOException {
        
    
            File f = new File(filename);
            if (!f.exists()) {
        
                throw new FileNotFoundException(filename);
            }
    
            ByteArrayOutputStream bos = new ByteArrayOutputStream((int) f.length());
            BufferedInputStream in = null;
            try {
        
                in = new BufferedInputStream(new FileInputStream(f));
                int buf_size = 1024;
                byte[] buffer = new byte[buf_size];
                int len = 0;
                while (-1 != (len = in.read(buffer, 0, buf_size))) {
        
                    bos.write(buffer, 0, len);
                }
                return bos.toByteArray();
            } catch (IOException e) {
        
                e.printStackTrace();
                throw e;
            } finally {
        
                try {
        
                    in.close();
                } catch (IOException e) {
        
                    e.printStackTrace();
                }
                bos.close();
            }
        }
    
    
    
    
    }

### 3. 实现效果如下图 ###

![在这里插入图片描述][73959b4d90bc403c8df67be2d6bfc9ef.png_pic_center]

[73959b4d90bc403c8df67be2d6bfc9ef.png_pic_center]: https://image.dandelioncloud.cn/pgy_files/images/2024/03/23/f3cb98575a724d079ebb6e4272e06c95.png