通过pdf模板，填充内容，生成pdf文件---JAVA
1 概述
我们通常会遇到需要生成某些固定格式，但是内容不同的文件，那么我们就可以使用⽤Adobe Acrobat DC来创建pdf模块，然后通过代码对模板进行填充，生成pdf文件
2 创建一个pdf模板文件
3 使⽤Adobe Acrobat DC打开PDF⽂件，来创建模板
还可以双击这个框框打开设置，设置其他属性
4 编码
package com.ruoyi.weixin.user.MyTest.Itext;
import net.coobird.thumbnailator.Thumbnails;
import net.coobird.thumbnailator.geometry.Positions;
import javax.imageio.ImageIO;
import java.io.*;
/**
* @Classname ImageThumbUtil
* @Description TODO
* @Date 2022/5/6 0006 下午 4:34
* @Created by jcc
*/
public class ImageThumbUtils {
/**
* 缩略图⽚，图⽚质量为源图的80%
*
* @param originalImgPath 源图⽚存储路径
* @param w 图⽚压缩后的宽度
* @param h 图⽚压缩后的⾼度
* @param targetImgPath 缩略图的存放路径
*/
public static void thumbImage(String originalImgPath, int w, int h, String targetImgPath) throws Exception {
thumbImage(new FileInputStream(originalImgPath), w, h, targetImgPath, 0.8);
}
/\*\*
\* 缩略图⽚，图⽚质量为源图的80%
\*
\* @param originalImgData 源图⽚字节数
\* @param w 图⽚压缩后的宽度
\* @param h 图⽚压缩后的⾼度
\* @param targetImgPath 缩略图的存放路径
\*/
public static void thumbImage(byte\[\] originalImgData, int w, int h, String targetImgPath) throws Exception {
thumbImage(new ByteArrayInputStream(originalImgData), w, h, targetImgPath, 0.8);
}
/\*\*
\* 按⽐例压缩⽂件
\*
\* @param originalImgData 源⽂件
\* @param compressQalitiy 压缩⽐例
\* @param targetImgPath ⽬标路径
\*/
public static void thumbImage(byte\[\] originalImgData, double compressQalitiy, String targetImgPath) throws Exception {
Thumbnails.of(new ByteArrayInputStream(originalImgData)).scale(1f).outputQuality(compressQalitiy).toFile(targetImgPath);
}
/\*\*
\* 按⽐例压缩⽂件
\*
\* @param originalImgData 源⽂件
\* @param compressQalitiy 压缩⽐例
\*/
public static OutputStream thumbImage(byte\[\] originalImgData, double compressQalitiy) throws Exception {
OutputStream os = new ByteArrayOutputStream();
Thumbnails.of(new ByteArrayInputStream(originalImgData)).scale(1f).outputQuality(compressQalitiy).toOutputStream(os);
return os;
}
/\*\*
\* 按尺⼨⽐例缩略
\*
\* @param originalInputSteam 源图输⼊流
\* @param w 缩略宽
\* @param h 缩略⾼
\* @param targetImgPath 缩略图存储路径
\* @param compressQalitiy 缩略质量⽐例，0~1之间的数
\*/
public static void thumbImage(InputStream originalInputSteam, int w, int h, String targetImgPath, double compressQalitiy) throws Exception {
thumbImage(originalInputSteam, w, h, targetImgPath, compressQalitiy, true);
}
/\*\*
\* @param originalImgInputSteam 源图⽚输⼊流
\* @param w 图⽚压缩后的宽度
\* @param h 图⽚压缩后的⾼度
\* @param targetImgPath 缩略图的存放路径
\* @param compressQalitiy 压缩⽐例，0~1之间的double数字
\* @param keepAspectRatio 是否保持等⽐例压缩，是true，不是false
\*/
public static void thumbImage(InputStream originalImgInputSteam, int w, int h, String targetImgPath, double compressQalitiy,
boolean keepAspectRatio) throws Exception {
Thumbnails.of(originalImgInputSteam).size(w, h).outputQuality(Double.valueOf(compressQalitiy)).keepAspectRatio(true).toFile(targetImgPath);
}
/\*\*
\* 图⽚裁剪
\*
\* @param originalImgPath 源图⽚路径
\* @param targetImgPath 新图⽚路径
\* @param position 位置 0正中间，1中间左边，2中间右边，3底部中间，4底部左边，5底部右边，6顶部中间，7顶部左边，8顶部右边，
\* 其他为默认正中间
\* @param w 裁剪宽度
\* @param h 裁剪⾼度
\* @throws Exception
\*/
public static void crop(String originalImgPath, int position, int w, int h, String targetImgPath) throws Exception {
Thumbnails.of(originalImgPath).sourceRegion(getPositions(position), w, h).size(w, h).outputQuality(1).toFile(targetImgPath);
}
/\*\*
\* 给图⽚添加⽔印
\*
\* @param originalImgPath 将被添加⽔印图⽚ 路径
\* @param targetImgPath 含有⽔印的新图⽚路径
\* @param watermarkImgPath ⽔印图⽚
\* @param position 位置 0正中间，1中间左边，2中间右边，3底部中间，4底部左边，5底部右边，6顶部中间，7顶部左边，8顶部右边，
\* 其他为默认正中间
\* @param opacity 不透明度,取0~1之间的float数字，0完全透明，1完全不透明
\* @throws Exception
\*/
public static void watermark(String originalImgPath, String watermarkImgPath, int position, float opacity, String targetImgPath)
throws Exception {
Thumbnails.of(originalImgPath).watermark(getPositions(position), ImageIO.read(new File(watermarkImgPath)), opacity).scale(1.0)
.outputQuality(1).toFile(targetImgPath);
}
private static Positions getPositions(int position) {
Positions p = Positions.CENTER;
switch (position) {
case 0: {
p = Positions.CENTER;
break;
}
case 1: {
p = Positions.CENTER\_LEFT;
break;
}
case 2: {
p = Positions.CENTER\_RIGHT;
break;
}
case 3: {
p = Positions.BOTTOM\_CENTER;
break;
}
case 4: {
p = Positions.BOTTOM\_LEFT;
break;
}
case 5: {
p = Positions.BOTTOM\_RIGHT;
break;
}
case 6: {
p = Positions.TOP\_CENTER;
break;
}
case 7: {
p = Positions.TOP\_LEFT;
break;
}
case 8: {
p = Positions.TOP\_RIGHT;
break;
}
default: {
p = Positions.CENTER;
break;
}
}
return p;
}
public static void main(String\[\] args) throws Exception {
thumbImage("d:/pdf/1.jpg", 600, 600, "d:/pdf/2.jpg");
crop("d:/pdf/1.jpg", 7, 200, 300, "d:/pdf/2.jpg");
watermark("d:/pdf/1.jpg", "d:/pdf/2.jpg", 7, 1, "d:/pdf/3.jpg");
} }
/**
* @Classname PdfUtils
* @Description TODO
* @Date 2022/5/6 0006 下午 4:40
* @Created by jcc
*/
import com.itextpdf.text.Document;
import com.itextpdf.text.pdf.*;
import org.apache.commons.io.FileUtils;
import org.apache.commons.io.IOUtils;
import org.apache.pdfbox.pdmodel.PDDocument;
import org.apache.pdfbox.rendering.PDFRenderer;
import javax.imageio.ImageIO;
import java.awt.*;
import java.awt.image.BufferedImage;
import java.io.*;
import java.util.*;
import java.util.List;
/**
* Description: PdfUtils
* 依赖的包：itextpdf itext-asian
* commons-io,commons-codec
* @author mk
* @Date 2018-11-2 14:32
* @Param
* @return
*/
public class PdfUtils {
public static void main(String\[\] args) throws IOException { //注意，这里构建map，key和value都要是String
HashMap map = new HashMap
//姓名
map.put("customerAsex", "陈晓");
// 年龄
map.put("customerAage", "13");
// String path = PdfUtils.class.getResource("/template").getPath();
// System.out.println("path:"+path);
// String sourceFile = path + File.separator + "test.pdf";
//模板文件
String sourceFile = "C:\\Users\\Administrator\\Desktop\\muban.pdf";
//生成的pdf文件(自己随便定义)
String targetFile = "C:\\Users\\Administrator\\Desktop\\test_fill.pdf";
genPdf(map,sourceFile,targetFile);
// System.out.println("获取pdf表单中的fieldNames:"+getTemplateFileFieldNames(sourceFile));
// System.out.println("读取⽂件数组:"+fileBuff(sourceFile));
// System.out.println("pdf转图⽚:"+pdf2Img(new File(targetFile),imageFilePath));
}
/\*
\*
\* @Description TOOD
\* @param map 我们要填充的内容，key是pdf模板文本域的名称，value是要填充内容
\* @param sourceFile 模板文件路径
\* @param targetFile 生成的pdf文件路径
\* @return void
\* @date 2022/5/6 0006 下午 5:39
\* @author jcc
\*/
private static void genPdf(HashMap map, String sourceFile, String targetFile) throws IOException {
File templateFile = new File(sourceFile);
fillParam(map, FileUtils.readFileToByteArray(templateFile), targetFile);
}
/\*\*
\* Description: 使⽤map中的参数填充pdf，map中的key和pdf表单中的field对应 <br>
\* @author mk
\* @Date 2018-11-2 15:21 <br>
\* @Param
\* @return
\*/
public static void fillParam(Map<String, String> fieldValueMap, byte\[\] file, String contractFileName) {
FileOutputStream fos = null;
try {
fos = new FileOutputStream(contractFileName);
PdfReader reader = null;
PdfStamper stamper = null;
BaseFont base = null;
try {
reader = new PdfReader(file);
stamper = new PdfStamper(reader, fos);
stamper.setFormFlattening(true);
base = BaseFont.createFont("STSong-Light", "UniGB-UCS2-H", BaseFont.NOT\_EMBEDDED);
AcroFields acroFields = stamper.getAcroFields();
for (String key : acroFields.getFields().keySet()) {
acroFields.setFieldProperty(key, "textfont", base, null);
acroFields.setFieldProperty(key, "textsize", new Float(9), null);
}
if (fieldValueMap != null) {
for (String fieldName : fieldValueMap.keySet()) {
acroFields.setField(fieldName, fieldValueMap.get(fieldName));
}
}
} catch (Exception e) {
e.printStackTrace();
} finally {
if (stamper != null) {
try {
stamper.close();
} catch (Exception e) {
e.printStackTrace();
}
}
if (reader != null) {
reader.close();
}
}
} catch (Exception e) {
System.out.println("填充参数异常");
e.printStackTrace();
} finally {
IOUtils.closeQuietly(fos);
} }
/**
* Description: 获取pdf表单中的fieldNames
* @author mk
* @Date 2018-11-2 15:21
* @Param
* @return
*/
public static Set
Set
PdfReader reader = null;
try {
reader = new PdfReader(pdfFileName);
Set
for (String key : keys) {
int lastIndexOf = key.lastIndexOf(".");
int lastIndexOf2 = key.lastIndexOf("[");
fieldNames.add(key.substring(lastIndexOf != -1 ? lastIndexOf + 1 : 0, lastIndexOf2 != -1 ? lastIndexOf2 : key.length()));
}
} catch (IOException e) {
e.printStackTrace();
} finally {
if (reader != null) {
reader.close();
}
}
return fieldNames;
}
/**
* Description: 读取⽂件数组
* @author mk
* @Date 2018-11-2 15:21
* @Param
* @return
*/
public static byte[] fileBuff(String filePath) throws IOException {
File file = new File(filePath);
long fileSize = file.length();
if (fileSize > Integer.MAX_VALUE) {
//System.out.println("file too big…");
return null;
}
FileInputStream fi = new FileInputStream(file);
byte[] file_buff = new byte[(int) fileSize];
int offset = 0;
int numRead = 0;
while (offset < file_buff.length && (numRead = fi.read(file_buff, offset, file_buff.length - offset)) >= 0) {
offset += numRead;
}
// 确保所有数据均被读取
if (offset != file_buff.length) {
throw new IOException("Could not completely read file " + file.getName());
}
fi.close();
return file_buff;
}
/\*\*
\* Description: 合并pdf <br>
\* @author mk
\* @Date 2018-11-2 15:21 <br>
\* @Param
\* @return
\*/
public static void mergePdfFiles(String\[\] files, String savepath) {
Document document = null;
try {
document = new Document(); //默认A4⼤⼩
PdfCopy copy = new PdfCopy(document, new FileOutputStream(savepath));
document.open();
for (int i = 0; i < files.length; i++) {
PdfReader reader = null;
try {
reader = new PdfReader(files\[i\]);
int n = reader.getNumberOfPages();
for (int j = 1; j <= n; j++) {
document.newPage();
PdfImportedPage page = copy.getImportedPage(reader, j);
copy.addPage(page);
}
} finally {
if (reader != null) {
reader.close();
}
}
}
} catch (Exception e) {
e.printStackTrace();
} finally { //关闭PDF⽂档流，OutputStream⽂件输出流也将在PDF⽂档流关闭⽅法内部关闭
if (document != null) {
document.close();
}
}
}
/**
* pdf转图⽚
* @param file pdf
* @return
*/
public static boolean pdf2Img(File file,String imageFilePath) {
try {
//⽣成图⽚保存
byte[] data = pdfToPic(PDDocument.load(file));
File imageFile = new File(imageFilePath);
ImageThumbUtils.thumbImage(data, 1, imageFilePath); //按⽐例压缩图⽚
System.out.println("pdf转图⽚⽂件地址:" + imageFilePath);
return true;
} catch (Exception e) {
System.out.println("pdf转图⽚异常：");
e.printStackTrace();
}
return false;
}
/**
* pdf转图⽚
* pdf转图⽚
*/
private static byte[] pdfToPic(PDDocument pdDocument) {
ByteArrayOutputStream baos = new ByteArrayOutputStream();
List
try {
PDFRenderer renderer = new PDFRenderer(pdDocument);
for (int i = 0; i < pdDocument.getNumberOfPages(); i++) {//
// 0 表⽰第⼀页，300 表⽰转换 dpi，越⼤转换后越清晰，相对转换速度越慢
BufferedImage image = renderer.renderImageWithDPI(i, 108);
piclist.add(image);
}
// 总⾼度 总宽度 临时的⾼度 , 或保存偏移⾼度 临时的⾼度，主要保存每个⾼度
int height = 0, width = 0, _height = 0, __height = 0,
// 图⽚的数量
picNum = piclist.size();
// 保存每个⽂件的⾼度
int[] heightArray = new int[picNum];
// 保存图⽚流
BufferedImage buffer = null;
// 保存所有的图⽚的RGB
List
// 保存⼀张图⽚中的RGB数据
int[] _imgRGB;
for (int i = 0; i < picNum; i++) {
buffer = piclist.get(i);
heightArray[i] = _height = buffer.getHeight();// 图⽚⾼度
if (i == 0) {
// 图⽚宽度
width = buffer.getWidth();
}
// 获取总⾼度
height += _height;
// 从图⽚中读取RGB
_imgRGB = new int[width * _height];
_imgRGB = buffer.getRGB(0, 0, width, _height, _imgRGB, 0, width);
imgRGB.add(_imgRGB);
}
// 设置偏移⾼度为0
_height = 0;
// ⽣成新图⽚
BufferedImage imageResult = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);
int[] lineRGB = new int[8 * width];
int c = new Color(128, 128, 128).getRGB();
for (int i = 0; i < lineRGB.length; i++) {
lineRGB[i] = c;
}
for (int i = 0; i < picNum; i++) {
__height = heightArray[i];
// 计算偏移⾼度
if (i != 0)
_height += __height;
imageResult.setRGB(0, _height, width, __height, imgRGB.get(i), 0, width); // 写⼊流中
// 模拟页分隔
if (i > 0) {
imageResult.setRGB(0, _height + 2, width, 8, lineRGB, 0, width);
}
}
// 写流
ImageIO.write(imageResult, "jpg", baos);
} catch (Exception e) {
System.out.println("pdf转图⽚异常：");
e.printStackTrace();
} finally {
IOUtils.closeQuietly(baos);
try {
pdDocument.close();
} catch (Exception ignore) {
}
}
return baos.toByteArray();
}
}
测试代码中，只填了customerAname和customerAage到map中，所以这里只填入了左边的姓名和年龄
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