将图片和文字写到pdf文件中

这里主要用到了iText包，jar包在附件里面

由于iText目前不支持bmp格式的图片，所以在往pdf里面插入的时候要进行转换。

转换代码

 

package com.taiji.lbs.register.util;

import java.awt.Image;
import java.awt.Toolkit;
import java.awt.image.BufferedImage;
import java.awt.image.MemoryImageSource;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import com.sun.image.codec.jpeg.JPEGCodec;
import com.sun.image.codec.jpeg.JPEGImageEncoder;

public class BmpToJpg {

    /**
     * 图片格式转换 BMP -> JPG
     * @param file
     * @param dstFile
     */
    public static void bmpTojpg(String file, String dstFile) {
        try {
            FileInputStream in = new FileInputStream(file);
            Image TheImage = read(in);
            int wideth = TheImage.getWidth(null);
            int height = TheImage.getHeight(null);
            BufferedImage tag = new BufferedImage(wideth, height,BufferedImage.TYPE_INT_RGB);
            tag.getGraphics().drawImage(TheImage, 0, 0, wideth, height, null);
            FileOutputStream out = new FileOutputStream(dstFile);
            JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder(out);
            encoder.encode(tag);
            out.close();
        } catch (Exception e) {
            System.out.println(e);
        }
    }

    public static int constructInt(byte[] in, int offset) {
        int ret = ((int) in[offset + 3] & 0xff);
        ret = (ret << 8) | ((int) in[offset + 2] & 0xff);
        ret = (ret << 8) | ((int) in[offset + 1] & 0xff);
        ret = (ret << 8) | ((int) in[offset + 0] & 0xff);
        return (ret);
    }

    public static int constructInt3(byte[] in, int offset) {
        int ret = 0xff;
        ret = (ret << 8) | ((int) in[offset + 2] & 0xff);
        ret = (ret << 8) | ((int) in[offset + 1] & 0xff);
        ret = (ret << 8) | ((int) in[offset + 0] & 0xff);
        return (ret);
    }

    public static long constructLong(byte[] in, int offset) {
        long ret = ((long) in[offset + 7] & 0xff);
        ret |= (ret << 8) | ((long) in[offset + 6] & 0xff);
        ret |= (ret << 8) | ((long) in[offset + 5] & 0xff);
        ret |= (ret << 8) | ((long) in[offset + 4] & 0xff);
        ret |= (ret << 8) | ((long) in[offset + 3] & 0xff);
        ret |= (ret << 8) | ((long) in[offset + 2] & 0xff);
        ret |= (ret << 8) | ((long) in[offset + 1] & 0xff);
        ret |= (ret << 8) | ((long) in[offset + 0] & 0xff);
        return (ret);
    }

    public static double constructDouble(byte[] in, int offset) {
        long ret = constructLong(in, offset);
        return (Double.longBitsToDouble(ret));
    }

    public static short constructShort(byte[] in, int offset) {
        short ret = (short) ((short) in[offset + 1] & 0xff);
        ret = (short) ((ret << 8) | (short) ((short) in[offset + 0] & 0xff));
        return (ret);
    }

    static class BitmapHeader {
        public int iSize, ibiSize, iWidth, iHeight, iPlanes, iBitcount,
                iCompression, iSizeimage, iXpm, iYpm, iClrused, iClrimp;

        // 读取bmp文件头信息
        public void read(FileInputStream fs) throws IOException {
            final int bflen = 14;
            byte bf[] = new byte[bflen];
            fs.read(bf, 0, bflen);
            final int bilen = 40;
            byte bi[] = new byte[bilen];
            fs.read(bi, 0, bilen);
            iSize = constructInt(bf, 2);
            ibiSize = constructInt(bi, 2);
            iWidth = constructInt(bi, 4);
            iHeight = constructInt(bi, 8);
            iPlanes = constructShort(bi, 12);
            iBitcount = constructShort(bi, 14);
            iCompression = constructInt(bi, 16);
            iSizeimage = constructInt(bi, 20);
            iXpm = constructInt(bi, 24);
            iYpm = constructInt(bi, 28);
            iClrused = constructInt(bi, 32);
            iClrimp = constructInt(bi, 36);
        }
    }

    public static Image read(FileInputStream fs) {
        try {
            BitmapHeader bh = new BitmapHeader();
            bh.read(fs);
            if (bh.iBitcount == 24) {
                return (readImage24(fs, bh));
            }
            if (bh.iBitcount == 32) {
                return (readImage32(fs, bh));
            }
            fs.close();
        } catch (IOException e) {
            System.out.println(e);
        }
        return (null);
    }

    // 24位
    protected static Image readImage24(FileInputStream fs, BitmapHeader bh)
            throws IOException {
        Image image;
        if (bh.iSizeimage == 0) {
            bh.iSizeimage = ((((bh.iWidth * bh.iBitcount) + 31) & ~31) >> 3);
            bh.iSizeimage *= bh.iHeight;
        }
        int npad = (bh.iSizeimage / bh.iHeight) - bh.iWidth * 3;
        int ndata[] = new int[bh.iHeight * bh.iWidth];
        byte brgb[] = new byte[(bh.iWidth + npad) * 3 * bh.iHeight];
        fs.read(brgb, 0, (bh.iWidth + npad) * 3 * bh.iHeight);
        int nindex = 0;
        for (int j = 0; j < bh.iHeight; j++) {
            for (int i = 0; i < bh.iWidth; i++) {
                ndata[bh.iWidth * (bh.iHeight - j - 1) + i] = constructInt3(
                        brgb, nindex);
                nindex += 3;
            }
            nindex += npad;
        }
        image = Toolkit.getDefaultToolkit().createImage(
                new MemoryImageSource(bh.iWidth, bh.iHeight, ndata, 0,
                        bh.iWidth));
        fs.close();
        return (image);
    }

    // 32位
    protected static Image readImage32(FileInputStream fs, BitmapHeader bh)
            throws IOException {
        Image image;
        int ndata[] = new int[bh.iHeight * bh.iWidth];
        byte brgb[] = new byte[bh.iWidth * 4 * bh.iHeight];
        fs.read(brgb, 0, bh.iWidth * 4 * bh.iHeight);
        int nindex = 0;
        for (int j = 0; j < bh.iHeight; j++) {
            for (int i = 0; i < bh.iWidth; i++) {
                ndata[bh.iWidth * (bh.iHeight - j - 1) + i] = constructInt3(
                        brgb, nindex);
                nindex += 4;
            }
        }
        image = Toolkit.getDefaultToolkit().createImage(
                new MemoryImageSource(bh.iWidth, bh.iHeight, ndata, 0,
                        bh.iWidth));
        fs.close();
        return (image);
    }

    public static void main(String[] args) {
        String srcfile = "c:\\726.bmp";
        String dstFile = "c:\\726.jpg";
        bmpTojpg(srcfile, dstFile);
    }

}

来看看插入代码

 

package com.taiji.lbs.register.util;

import java.io.ByteArrayInputStream;
import java.io.File;
import java.io.FileOutputStream;
import java.io.InputStream;
import java.util.List;

import com.lowagie.text.Document;
import com.lowagie.text.DocumentException;
import com.lowagie.text.Image;
import com.lowagie.text.Paragraph;
import com.lowagie.text.pdf.BaseFont;
import com.lowagie.text.pdf.PdfWriter;
import com.taiji.core.util.ApplicationPath;
import com.taiji.core.util.PaginationSupport;
import com.taiji.lbs.register.hibernate.model.Picture;
import com.taiji.lbs.register.hibernate.model.RegisterInfo;

public class CreatePDF {
    /**
     * 创建pdf将用户信息放入其中
     * 乔磊
     * @param list
     * @throws DocumentException
     * @throws Exception
     */
    public static void createPDF(PaginationSupport list) throws Exception, DocumentException{
        //导出成pdf
        List pdfList = list.getItems();
        String picName = "";
        String picNameDst = "";//将bmp图片转换成jpg格式
        String str = "";
        String rootPath = ApplicationPath.getRootPath().replaceAll("\\\\","\\\\\\\\");// 获得绝对地址 服务器的
        //建立一个文档对象
         Document doc = new Document();
         PdfWriter.getInstance(doc, new FileOutputStream("c:/hello.pdf"));
        // 打开文档对象
        doc.open();
        //根据经验，建议使用windos自带字体
        BaseFont basefont;
        com.lowagie.text.Font   FontChinese ;
        basefont = BaseFont.createFont("c:\\windows\\fonts\\simsun.ttc,1", BaseFont.IDENTITY_H, BaseFont.EMBEDDED);
        FontChinese   =   new   com.lowagie.text.Font(basefont);
        for (Object object : pdfList) {
            Picture pic = ((RegisterInfo)object).getPicture();
            if (pic != null) {
                picName = String.valueOf(pic.getId() + ".bmp");
                picNameDst = String.valueOf(pic.getId() + ".jpg");
                File filePic = new File(rootPath + "\\photo\\" + picName);
                FileOutputStream output;
                output = new FileOutputStream(filePic);
                byte buffer[] = null;
                if (pic.getPhoto() != null) {
                    buffer = pic.getPhoto();
                    InputStream in = new ByteArrayInputStream(buffer);
                    int len;
                    while ((len = in.read(buffer)) > 0) {
                        output.write(buffer, 0, len);
                    }
                    output.close();
                    in.close();
                } else {
                    picName = null;
                }
            }
            BmpToJpg.bmpTojpg(rootPath + "\\photo\\" + picName, rootPath + "\\photo\\" + picNameDst);
            //加用户头像
            Image jpg = Image.getInstance(rootPath + "\\photo\\" + picNameDst);
            jpg.setAlignment(Image.ALIGN_LEFT);
            doc.add(jpg);
            //加用户信息
            str = ((RegisterInfo)object).getId()+":"+((RegisterInfo)object).getIdNum();
            Paragraph tt = new Paragraph(str, FontChinese);
            tt.setAlignment(Paragraph.ALIGN_CENTER);
            doc.add(tt);
        }
        //释放文档对象
        doc.close();
    }
}

这样就完成了图片格式转换和插入了。

===============================================================

先前的那个例子图片和文本容易分离，为了更美观一些将图片和文本放到一个表格里面，修改部分代码如下

BmpToJpg.bmpTojpg(rootPath + "\\photo\\" + picName, rootPath + "\\photo\\" + picNameDst);
            //加用户头像
            Image jpg = Image.getInstance(rootPath + "\\photo\\" + picNameDst);
            jpg.setAlignment(Image.ALIGN_LEFT);
            //doc.add(jpg);
            //加用户信息
            str = ((RegisterInfo)object).getChineseName()+" "+((RegisterInfo)object).getEnglishName()+" "+((RegisterInfo)object).getNationality()+" "+((RegisterInfo)object).getIdNum()+" "+((RegisterInfo)object).getDiplomaticTitle();
            Paragraph tt = new Paragraph(str, FontChinese);
            tt.setAlignment(Paragraph.ALIGN_RIGHT);
            //doc.add(tt);


            //创建一个有1列的表格
            PdfPTable table = new PdfPTable(1);
            //定义一个表格单元
            PdfPCell cell = new PdfPCell(jpg);
            //把单元加到表格中
            table.addCell(cell);
            //重新定义单元格
            PdfPCell cellText = new PdfPCell(tt);
            //增加到表格上
            table.addCell(cellText);
            //增加到文档中
            doc.add(table);