java之数据填充PDF模板
1、既然要使用PDF模板填充，那么就需要制作PDF模板，可以使用Adobe Acrobat DC，下载地址：https://carrot.ctfile.com/dir/11269771-27158812-194d66/29433907/ （使用特别破解版），安装步骤就省略了。
2、开始制作模板
a)使用wps制作一个表格,并转为PDF文件保存
b）使用Adobe Acrobat DC打开保存的PDF文件，然后搜索 "准备表单" ,点击 ”准备表单“，然后出来表单域
3、程序部分
a）依赖
commons-io
commons-io
2.4
commons-codec
commons-codec
1.10
com.itextpdf
itextpdf
5.5.10
com.itextpdf
itext-asian
5.2.0
org.apache.pdfbox
pdfbox
2.0.11
net.coobird
thumbnailator
0.4.2
b）工具类 ImageThumbUtils，该类主要是用于将pdf转为图片，如果不需要可以不添加
/**
* 图片缩略、裁剪、添加水印。
*/
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");
}
}c）实现数据填充PDF模板
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 {
HashMap map = new HashMap();
map.put("name","杨杰");
map.put("sex","男");
map.put("age","");
map.put("phone","");
map.put("email","[email protected]");
map.put("idCard","");
map.put("hobby","跑步");
map.put("time","2019年5月22日");
// String path = PdfUtils.class.getResource("/template").getPath();
// System.out.println("path:"+path);
// String sourceFile = path + File.separator + "test.pdf";
String sourceFile = "C:\\Users\\yangwj\\Desktop\\test.pdf";
String targetFile = "C:\\Users\\yangwj\\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));
}
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
* @author mk
* @Date 2018-11-2 15:21
* @Param
* @return
*/
public static void fillParam(Map 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 getTemplateFileFieldNames(String pdfFileName) {
Set fieldNames = new TreeSet();
PdfReader reader = null;
try {
reader = new PdfReader(pdfFileName);
Set keys = reader.getAcroFields().getFields().keySet();
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
* @author mk
* @Date 2018-11-2 15:21
* @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
*/
private static byte[] pdfToPic(PDDocument pdDocument) {
ByteArrayOutputStream baos = new ByteArrayOutputStream();
List piclist = new ArrayList();
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 imgRGB = new ArrayList();
// 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();
}
} 4、针对复选框的填充
