springboot中word转pdf,加盖电子印章

<dependency>
<groupId>org.jodconverter</groupId>
<artifactId>jodconverter-spring-boot-starter</artifactId>
<version>4.1.0</version>
</dependency>
<dependency>
<groupId>org.libreoffice</groupId>
<artifactId>juh</artifactId>
<version>5.4.2</version>
</dependency>
<dependency>
<groupId>org.libreoffice</groupId>
<artifactId>jurt</artifactId>
<version>5.4.2</version>
</dependency>
<dependency>
<groupId>org.libreoffice</groupId>
<artifactId>ridl</artifactId>
<version>5.4.2</version>
</dependency>
<dependency>
<groupId>org.libreoffice</groupId>
<artifactId>unoil</artifactId>
<version>5.4.2</version>
</dependency>

jodconverter:
enabled: true
#office-home: /opt/libreoffice7.0
port-numbers: 8200
max-tasks-per-process: 100
working-dir:
office-home: C:\Program Files\LibreOffice

@Resource
private DocumentConverter documentConverter;//在使用处使用
documentConverter.convert(new File(sourcePath)).to(new File(targetPath)).execute();

#基于centos7版本镜像
FROM centos:7#以下设置中文语言环境与修改时区
ENV LANG=zh_CN.UTF-8 \
LANGUAGE=zh_CN:zh \
LC_ALL=zh_CN.UTF-8
RUN yum update -y && \
yum reinstall -y glibc-common && \
yum install -y telnet net-tools && \
yum clean all && \
rm -rf /tmp/* rm -rf /var/cache/yum/* && \
localedef -c -f UTF-8 -i zh_CN zh_CN.UTF-8 && \
ln -sf /usr/share/zoneinfo/Asia/Shanghai /etc/localtime#加入windows字体包
ADD chinese.tar.gz /usr/share/fonts/#将下载好的包解压到相应文件下
ADD LibreOffice_7.0.1_Linux_x86-64_rpm.tar.gz /home/#执行安装
RUN cd /home/LibreOffice_7.0.1.2_Linux_x86-64_rpm/RPMS/ \
&& yum localinstall *.rpm -y \#安装依赖
&& yum install ibus -y \#加入中文字体支持并赋权限
&& cd /usr/share/fonts/ \
&& chmod -R 755 /usr/share/fonts \
&& yum install mkfontscale -y \
&& mkfontscale \
&& yum install fontconfig -y \
&& mkfontdir \
&& fc-cache -fv \
&& mkdir /usr/local/java/ \#清理缓存,减少镜像大小
&& yum clean all#加入安装java环境
ADD jdk-8u121-linux-x64.tar.gz /usr/local/java/
RUN ln -s /usr/local/java/jdk1.8.0_121 /usr/local/java/jdk#配置环境变量
ENV JAVA_HOME /usr/local/java/jdk
ENV JRE_HOME ${JAVA_HOME}/jre
ENV CLASSPATH .:${JAVA_HOME}/lib:${JRE_HOME}/lib
ENV PATH ${JAVA_HOME}/bin:$PATH
CMD ["bash"]

docker build -t libreoffice:v1 .

FROM libreoffice:v1
VOLUME /tmp
ADD xxx.jar/ app.jar
RUN bash -c 'touch /app.jar'
ENV TZ=Asia/Shanghai
RUN ln -snf /usr/share/zoneinfo/$TZ /etc/localtime && echo $TZ > /etc/timezone
EXPOSE 9501
ENTRYPOINT ["java","-Xmx640M","-Xms640M","-Xmn240M","-XX:MaxMetaspaceSize=192M","-XX:MetaspaceSize=192M","-Djava.security.egd=file:/dev/./urandom","-jar","/app.jar"]

docker build -t xxx .

<dependency>
<groupId>com.itextpdf</groupId>
<artifactId>itext-asian</artifactId>
<version>5.2.0</version>
</dependency>

import com.itextpdf.awt.geom.Rectangle2D;
import com.itextpdf.text.pdf.PdfDictionary;
import com.itextpdf.text.pdf.PdfName;
import com.itextpdf.text.pdf.PdfReader;
import com.itextpdf.text.pdf.parser.*;public class GetKeyWordPosition {
public static void main(String[] args) throws IOException {
//1.给定文件
File pdfFile = new File("C:\\Users\\xxx\\Desktop\\结题报告.pdf");
//2.定义一个byte数组，长度为文件的长度
byte[] pdfData = new byte[(int) pdfFile.length()]; //3.IO流读取文件内容到byte数组
FileInputStream inputStream = null;
try {
inputStream = new FileInputStream(pdfFile);
inputStream.read(pdfData);
} catch (IOException e) {
throw e;
} finally {
if (inputStream != null) {
try {
inputStream.close();
} catch (IOException e) {
}
}
} //4.指定关键字
String keyword = "公章"; //5.调用方法，给定关键字和文件
List<float[]> positions = findKeywordPostions(pdfData, keyword); //6.返回值类型是 List<float[]> 每个list元素代表一个匹配的位置，分别为 float[0]所在页码 float[1]所在x轴 float[2]所在y轴
System.out.println("total:" + positions.size());
if (positions != null && positions.size() > 0) {
for (float[] position : positions) {
System.out.print("pageNum: " + (int) position[0]);
System.out.print("\tx: " + position[1]);
System.out.println("\ty: " + position[2]);
}
}
} /**
* findKeywordPostions
* @param pdfData 通过IO流 PDF文件转化的byte数组
* @param keyword 关键字
* @return List<float [ ]> : float[0]:pageNum float[1]:x float[2]:y
* @throws IOException
*/
public static List<float[]> findKeywordPostions(byte[] pdfData, String keyword) throws IOException {
List<float[]> result = new ArrayList<>();
List<PdfPageContentPositions> pdfPageContentPositions = getPdfContentPostionsList(pdfData); for (PdfPageContentPositions pdfPageContentPosition : pdfPageContentPositions) {
List<float[]> charPositions = findPositions(keyword, pdfPageContentPosition);
if (charPositions == null || charPositions.size() < 1) {
continue;
}
result.addAll(charPositions);
}
return result;
} private static List<PdfPageContentPositions> getPdfContentPostionsList(byte[] pdfData) throws IOException {
PdfReader reader = new PdfReader(pdfData); List<PdfPageContentPositions> result = new ArrayList<>(); int pages = reader.getNumberOfPages();
for (int pageNum = 1; pageNum <= pages; pageNum++) {
float width = reader.getPageSize(pageNum).getWidth();
float height = reader.getPageSize(pageNum).getHeight(); PdfRenderListener pdfRenderListener = new PdfRenderListener(pageNum, width, height); //解析pdf，定位位置
PdfContentStreamProcessor processor = new PdfContentStreamProcessor(pdfRenderListener);
PdfDictionary pageDic = reader.getPageN(pageNum);
PdfDictionary resourcesDic = pageDic.getAsDict(PdfName.RESOURCES);
try {
processor.processContent(ContentByteUtils.getContentBytesForPage(reader, pageNum), resourcesDic);
} catch (IOException e) {
reader.close();
throw e;
} String content = pdfRenderListener.getContent();
List<CharPosition> charPositions = pdfRenderListener.getcharPositions(); List<float[]> positionsList = new ArrayList<>();
for (CharPosition charPosition : charPositions) {
float[] positions = new float[]{charPosition.getPageNum(), charPosition.getX(), charPosition.getY()};
positionsList.add(positions);
} PdfPageContentPositions pdfPageContentPositions = new PdfPageContentPositions();
pdfPageContentPositions.setContent(content);
pdfPageContentPositions.setPostions(positionsList); result.add(pdfPageContentPositions);
}
reader.close();
return result;
} private static List<float[]> findPositions(String keyword, PdfPageContentPositions pdfPageContentPositions) { List<float[]> result = new ArrayList<>(); String content = pdfPageContentPositions.getContent();
List<float[]> charPositions = pdfPageContentPositions.getPositions(); for (int pos = 0; pos < content.length(); ) {
int positionIndex = content.indexOf(keyword, pos);
if (positionIndex == -1) {
break;
}
float[] postions = charPositions.get(positionIndex);
result.add(postions);
pos = positionIndex + 1;
}
return result;
} private static class PdfPageContentPositions {
private String content;
private List<float[]> positions; public String getContent() {
return content;
} public void setContent(String content) {
this.content = content;
} public List<float[]> getPositions() {
return positions;
} public void setPostions(List<float[]> positions) {
this.positions = positions;
}
} private static class PdfRenderListener implements RenderListener {
private int pageNum;
private float pageWidth;
private float pageHeight;
private StringBuilder contentBuilder = new StringBuilder();
private List<CharPosition> charPositions = new ArrayList<>(); public PdfRenderListener(int pageNum, float pageWidth, float pageHeight) {
this.pageNum = pageNum;
this.pageWidth = pageWidth;
this.pageHeight = pageHeight;
} public void beginTextBlock() {
} public void renderText(TextRenderInfo renderInfo) {
List<TextRenderInfo> characterRenderInfos = renderInfo.getCharacterRenderInfos();
for (TextRenderInfo textRenderInfo : characterRenderInfos) {
String word = textRenderInfo.getText();
if (word.length() > 1) {
word = word.substring(word.length() - 1, word.length());
}
Rectangle2D.Float rectangle = textRenderInfo.getAscentLine().getBoundingRectange(); float x = (float)rectangle.getX();
float y = (float)rectangle.getY();
// float x = (float)rectangle.getCenterX();
// float y = (float)rectangle.getCenterY();
// double x = rectangle.getMinX();
// double y = rectangle.getMaxY(); //这两个是关键字在所在页面的XY轴的百分比
float xPercent = Math.round(x / pageWidth * 10000) / 10000f;
float yPercent = Math.round((1 - y / pageHeight) * 10000) / 10000f;// CharPosition charPosition = new CharPosition(pageNum, xPercent, yPercent);
CharPosition charPosition = new CharPosition(pageNum, (float)x, (float)y);
charPositions.add(charPosition);
contentBuilder.append(word);
}
} public void endTextBlock() {
} public void renderImage(ImageRenderInfo renderInfo) {
} public String getContent() {
return contentBuilder.toString();
} public List<CharPosition> getcharPositions() {
return charPositions;
}
} private static class CharPosition {
private int pageNum = 0;
private float x = 0;
private float y = 0; public CharPosition(int pageNum, float x, float y) {
this.pageNum = pageNum;
this.x = x;
this.y = y;
} public int getPageNum() {
return pageNum;
} public float getX() {
return x;
} public float getY() {
return y;
} @Override
public String toString() {
return "[pageNum=" + this.pageNum + ",x=" + this.x + ",y=" + this.y + "]";
}
}
}

import com.itextpdf.text.DocumentException;
import com.itextpdf.text.Image;
import com.itextpdf.text.pdf.*;public class StampUtil {
public static void main(String[] args) throws Exception {
//pt3.pdf你在resource目录下找得到，放到绝对路径下就好了
findKeyWordAndAddImage("C:\\Users\\wanggang\\Desktop\\2020年 湖南省卫健委科研项目合同书.pdf", "C:\\Users\\wanggang\\Desktop\\2020年 湖南省卫健委科研项目合同书seal.pdf", "湖南省卫生健康委（甲方）科技主管部门：（公章）",
"C:\\Users\\wanggang\\Desktop\\timg.png", 0, -130);
} /**
* 寻找指定的关键字后给其所在位置盖章
* @param source 源pdf文件
* @param target 目标pdf文件
* @param keyword 关键字
* @param image 印章路径
* @param xOffset x轴偏移量(没有则指定为0)
* @param yOffset y轴偏移量(没有则指定为0)
* @return 返回结果
* @throws IOException
* @throws DocumentException
*/
public static boolean findKeyWordAndAddImage(String source, String target, String keyword, String image, float xOffset, float yOffset) throws IOException, DocumentException {
boolean result = false; File pdfFile = new File(source);
byte[] pdfData = new byte[(int) pdfFile.length()];
FileInputStream fis = null;
try {
fis = new FileInputStream(pdfFile);
fis.read(pdfData); } catch (IOException e) {
e.printStackTrace();
System.out.println("文件不存在");
return result;
}finally {
fis.close();
}
System.out.println("keyword:"+keyword);
//查到关键字返回位置
List<float[]> positions = findKeywordPostions(pdfData, keyword);
if(positions.size() == 0){
System.out.println("关键字不存在");
return result;
} //添加水印 //会查询到多个关键字定位，固定取最后一个
result = addImage(source, target, image, positions.get(positions.size()-1), xOffset, yOffset);
return true;
} //添加水印(签章)
private static boolean addImage(String source, String target, String imagePath, float[] positions, float xOffset, float yOffset) throws IOException, DocumentException {
// 读取模板文件
InputStream input = new FileInputStream(new File(source));
PdfReader reader = new PdfReader(input);
FileOutputStream fileOutputStream = new FileOutputStream(target);
PdfStamper stamper = new PdfStamper(reader, fileOutputStream); // 提取pdf中的表单
AcroFields form = stamper.getAcroFields();
form.addSubstitutionFont(BaseFont.createFont("STSong-Light","UniGB-UCS2-H", BaseFont.NOT_EMBEDDED)); // 读图片
Image image = Image.getInstance(imagePath); // 获取操作的页面
PdfContentByte under = stamper.getOverContent((int)positions[0]); //设置图片的定位
image.setAbsolutePosition(positions[1]+xOffset, positions[2]+yOffset); //image.scalePercent(75); //缩放图片为指定百分比 // 设置透明度为0.8
PdfGState gs = new PdfGState(); gs.setFillOpacity(0.8f);
under.setGState(gs);
// 添加图片
under.addImage(image); stamper.close();
fileOutputStream.close();
reader.close();
input.close(); return true;
}
}