基于itextpdf的java读取和更新pdf表单域字段值功能

执行结果为：

Hello World!
key=topmostSubform[0].Page1[0].qhjc[0]
key=topmostSubform[0].Page1[0].qhmc[0]
key=topmostSubform[0].Page1[0].cqzh[0]
key=topmostSubform[0].Page1[0].fm_year[0]
key=topmostSubform[0].Page1[0].nd[0]
key=topmostSubform[0].Page1[0].fm_day[0]
key=topmostSubform[0].Page1[0].fj[0]
key=topmostSubform[0].Page1[0].qt[0]
key=topmostSubform[0].Page1[0].bdcdyh[0]
key=topmostSubform[0].Page1[0].ywr[0]
key=topmostSubform[0].Page1[0].qlr[0]
key=topmostSubform[0].Page1[0].zmqlhsx[0]
key=topmostSubform[0].Page1[0].fm_month[0]
key=topmostSubform[0].Page1[0].zl[0]
key=topmostSubform[0].Page1[0].qrcode[0]
OK!
gitee.com

pom.xml中添加引用

<!-- pdf reader/writer--><dependency><groupId>com.itextpdf</groupId><artifactId>itextpdf</artifactId><version>5.5.13</version></dependency><!--pdf supert chinese text --><dependency><groupId>com.itextpdf</groupId><artifactId>itext-asian</artifactId><version>5.2.0</version></dependency>

java代码：

package com.cwgis;import com.itextpdf.text.pdf.AcroFields;
import com.itextpdf.text.pdf.BaseFont;
import com.itextpdf.text.pdf.PdfReader;
import com.itextpdf.text.pdf.PdfStamper;import java.io.File;
import java.io.FileOutputStream;
import java.io.OutputStream;
import java.util.HashMap;
import java.util.Map;//此类读取pdf文件中表单域，读取出字段列表  OK
public class test_pdf {public void updatePdf(String inputFileName, String outputFileName,Map<String, Object> data){OutputStream os = null;PdfStamper ps = null;PdfReader reader = null;try{os = new FileOutputStream(new File(outputFileName));// 2 读入pdf表单reader = new PdfReader(inputFileName);// 3 根据表单生成一个新的pdfps = new PdfStamper(reader, os);// 4 获取pdf表单AcroFields form = ps.getAcroFields();//显示表单中所有字段名称for(String key : form.getFields().keySet()){System.out.println("key="+key);}// 5给表单添加中文字体 这里采用系统字体。不设置的话，中文可能无法显示// BaseFont bf = BaseFont.createFont("C:/Windows/Fonts/SIMYOU.TTF",// BaseFont.IDENTITY_H, BaseFont.EMBEDDED);// 方法二：使用iTextAsian.jar中的字体// BaseFont baseFont =// BaseFont.createFont("STSong-Light",BaseFont.IDENTITY_H,BaseFont.NOT_EMBEDDED);//BaseFont bf = BaseFont.createFont("d:/user/80004194/desktop/test/SIMYOU.TTF", BaseFont.IDENTITY_H, BaseFont.NOT_EMBEDDED);//form.addSubstitutionFont(bf);// 7遍历data 给pdf表单表格赋值for (String key : data.keySet()) {form.setField(key, data.get(key).toString());}ps.setFormFlattening(true);//System.out.println("===============PDF导出成功=============");} catch(Exception e){//System.out.println("===============PDF导出失败=============");e.printStackTrace();} finally{try {ps.close();reader.close();os.close();} catch (Exception e) {e.printStackTrace();}}}public void updatePdf_test(String inputFileName, String outputFileName){// 6查询数据================================================Map<String, Object> data = new HashMap<String, Object>();/*data.put("empName", "金星");data.put("empNumber", "束带结发看电视");           data.put("empDateOfIssue", "2019-12-3");data.put("empCertificateNo", "20190100833257");data.put("empApprovalNo_2019", "ZN-TP-CSS-20180002");data.put("empTrainingDate_2019", "2019-11-3");data.put("empCategory_2019", "初训");data.put("empResult_2019", "合格");data.put("empSignature_2019", "露西");data.put("answer", "张三");*/data.put("zmqlhsx","zmqlhsx");data.put("ywr","ywr张三");//this.updatePdf(inputFileName,outputFileName,data);}}

main代码：

test_pdf pdf=new test_pdf();
pdf.updatePdf_test("D:\\data\\pdf\\zszm_td.pdf","D:\\data\\pdf\\zszm_td_out.pdf");