为了实现关键字位置签字在网上查找了挺多资料的感觉能满足功能的代码参考地址Itext7获取关键字在文件中的坐标

二、使用JAR包

dependencygroupIdcom.itextpdf/groupIdartifactIditextpdf/artifactIdversion5.5.13.1/version

/dependency

dependencygroupIdcom.itextpdf/groupIdartifactIditext7-core/artifactIdversion7.2.0/versiontypepom/type

/dependency三、实现代码

com.itextpdf.kernel.geom.Rectangle;

import

com.itextpdf.kernel.pdf.PdfDocument;

import

com.itextpdf.kernel.pdf.PdfPage;

import

com.itextpdf.kernel.pdf.PdfReader;

import

com.itextpdf.kernel.pdf.canvas.parser.PdfCanvasProcessor;

import

com.itextpdf.kernel.pdf.canvas.parser.listener.IPdfTextLocation;

import

com.itextpdf.kernel.pdf.canvas.parser.listener.RegexBasedLocationExtractionStrategy;import

import

getKeywordLocation(ByteArrayInputStream

bytes,

HashMap();//使用这种方式无需再关闭了处理完自动关闭try

(PdfReader

pdfDocument.getNumberOfPages();

{PdfPage

pdfDocument.getPage(i);RegexBasedLocationExtractionStrategy

strategy

RegexBasedLocationExtractionStrategy(keyword);PdfCanvasProcessor

canvasProcessor

PdfCanvasProcessor(strategy);canvasProcessor.processPageContent(page);CollectionIPdfTextLocation

resultantLocations

strategy.getResultantLocations();//

自定义结果处理if

(!resultantLocations.isEmpty())

{ListMapString,

item.getRectangle();map.put(page,

item.getPageNumber());map.put(absoluteX,

rectangle.getX());map.put(absoluteY,

rectangle.getY());map.put(width,

rectangle.getWidth());map.put(height,

rectangle.getHeight());map.put(keyword,

rectangle.getTop());map.put(bottom,

rectangle.getBottom());map.put(left,

rectangle.getLeft());map.put(right,

右坐标map.put(count,

出现次数locationList.add(map);}result.put(String.valueOf(i),

result;}

本地测试用了文件转内存流方式如果需要加盖电子印章可以把签字图片替换成电子印章图片

//引入包信息

com.alibaba.fastjson.JSONArray;

import

com.alibaba.fastjson.JSONObject;

import

com.itextpdf.text.DocumentException;

import

com.itextpdf.text.pdf.PdfContentByte;

import

com.itextpdf.text.pdf.PdfStamper;import

import

readFileToMemoryStream(filePath);MapString,

Object

ByteArrayInputStream(memoryStream.toByteArray()),

keyword);com.itextpdf.text.pdf.PdfReader

pdfReader

com.itextpdf.text.pdf.PdfReader(memoryStream.toByteArray());PdfStamper

pdfStamper

Files.newOutputStream(Paths.get(E:\\文书.pdf)));com.itextpdf.text.Image

image

Image.getInstance(E:\\sign.png);//设置签字图片宽高image.scaleAbsolute(100,

50);//我直接在第一页操作也可以根据返回的数据进行操作JSONArray

jsonArray

JSONArray.parseArray(JSON.toJSONString(map.get(1)));JSONObject

jsonObject

jsonArray.getJSONObject(0);//这个位置主要是插入签名图片位置坐标也可以根据情况自行调整取值float

absoluteX

Float.parseFloat(jsonObject.getString(absoluteX))

Float.parseFloat(jsonObject.getString(width));float

absoluteY

Float.parseFloat(jsonObject.getString(absoluteY))

(Float.parseFloat(jsonObject.getString(width))

Float.parseFloat(jsonObject.getString(height)));image.setAbsolutePosition(absoluteX,

content

pdfStamper.getUnderContent(1);content.addImage(image);pdfStamper.close();

}private