SpringBoot使用模板动态导出PDF使用itextpdf

1.引包

----- dependencies部分-------------------------------------------------------------------------------

<dependency>
  <groupId>com.itextpdf</groupId>
    <artifactId>itextpdf</artifactId>
    <version>5.5.13</version>
</dependency>
<!--字体集-->
<dependency>
    <groupId>com.itextpdf</groupId>
    <artifactId>itext-asian</artifactId>
    <version>5.2.0</version>
</dependency>

----- build部分-------------------------------------------------------------------------------
配置所需字体包，将包放在resources路径下，我使用的是宋体，可以在本地C:\Windows\Fonts中拷贝需要使用的字体包
请添加图片描述

<resources>
   <resource>
        <directory>src/main/resources</directory>
        <filtering>true</filtering>
        <excludes>
            <exclude>fonts/*</exclude>
        </excludes>
    </resource>
    <resource>
        <directory>src/main/resources</directory>
        <filtering>false</filtering>
        <includes>
            <include>fonts/*</include>
        </includes>
    </resource>
</resources>

2.controller层代码段

@GetMapping(value = "/export", produces = "application/json")
@ResponseBody
 public void export(HttpServletResponse response, SinCardTempFeeQueryVO sinCardTempFeeQueryVO) {
     log.info("收据打印开始startPrint()");
     response.setHeader("content-disposition","attachment;fileName="+"ReceiptPrinter.pdf");
     try {
         reportPrint.generateTempPDF(response,sinCardTempFeeQueryVO);
         log.info("收据打印结束Print()");
     } catch (Exception e) {
         e.printStackTrace();
     }
 }

3.service层代码段

package com.lotso.web.module.KDFinfeeSure.service.impl;


import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONObject;
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 com.lotso.web.common.utils.ConvertUpMoneyUtil;
import com.lotso.web.common.utils.HttpClientHelper;
import com.lotso.web.module.KDFinfeeSure.service.ReportPrintService;
import com.lotso.web.module.KDFinfeeSure.vo.JGSinCardQueryVO;
import com.lotso.web.module.KDFinfeeSure.vo.SinCardTempFeeQueryVO;
import com.lotso.web.module.system.entity.Dict;
import com.lotso.web.module.system.mapper.IDictMapper;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServletResponse;
import java.io.*;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Date;
import java.util.HashMap;
import java.util.Map;

@Service
@Slf4j
public class ReportPrintImpl implements ReportPrintService {

    @Autowired
    IDictMapper dictMapper;

    @Autowired
    private HttpClientHelper httpClient;

    @Override
    public  void generateTempPDF(HttpServletResponse response, SinCardTempFeeQueryVO sinCardTempFeeQueryVO) throws Exception {
        PdfReader reader = null;
        PdfStamper ps = null;
        OutputStream fos = null;
        ByteArrayOutputStream bos = null;
        InputStream fin = null;
        ServletOutputStream out = null;
        try {
//            String fileName = "E:\\Work\\unifiedpaymentpayplatformxyd\\src\\main\\resources\\templates\\pdf\\KDDLR_Receipt_Template.pdf";
            //模板绝对路径--服务器
            String fileName = "/app/file/pdf/KDDLR_Receipt_Template.pdf";
            reader = new PdfReader(fileName);
            bos = new ByteArrayOutputStream();
            ps = new PdfStamper(reader, bos);

            // 使用中文字体
            BaseFont bf = BaseFont.createFont("/fonts/STSONG.TTF", BaseFont.IDENTITY_H, BaseFont.NOT_EMBEDDED);
            ArrayList<BaseFont> fontList = new ArrayList<BaseFont>();
            fontList.add(bf);

            AcroFields fields = ps.getAcroFields();
            fields.setSubstitutionFonts(fontList);
            fillData(fields, data(sinCardTempFeeQueryVO));//渲染

            //必须要调用这个，否则文档不会生成的
            ps.setFormFlattening(true);
            if(ps != null){
                ps.close();
            }
            //生成pdf路径存放的路径
            fos = response.getOutputStream();
            fos.write(bos.toByteArray());

        }catch (Exception e){
            e.printStackTrace();
            log.error("异常：{",e.getMessage()+e.getCause()+"}");
        }finally {
            if(fos!=null){
                fos.flush();
                fos.close();
            }
            if (bos != null){
                bos.close();
            }
            if(reader != null){
                reader.close();
            }
        }
    }

    /**
     * 填充模板中的数据
     */
    public void fillData(AcroFields fields, Map<String, String> data) {
        try {
            for (String key : data.keySet()) {
                String value = data.get(key);
                // 为字段赋值,注意字段名称是区分大小写的
                fields.setField(key, value);
            }
        } catch (Exception e) {
            e.printStackTrace();
            log.error("异常：{",e.getMessage()+e.getCause()+"}");
        }
    }

    /**
     * 填充数据源
     * 其中data存放的key值与pdf模板中的文本域值相对应
     */
    public Map<String, String> data( SinCardTempFeeQueryVO asinCardTempFeeQueryVO){
        // 构造数据 , key要与模板中的别名一一对应
        Map<String, String> paramters = new HashMap<String, String>();
        paramters.put("prtseq",sinCardTempFeeQueryVO.getPrtseq());
        paramters.put("agentcode",sinCardTempFeeQueryVO.getAgentcode());
        paramters.put("agentname",sinCardTempFeeQueryVO.getAgentname());
        paramters.put("oldprtseq",sinCardTempFeeQueryVO.getOldprtseq());
        paramters.put("reqcom",sinCardTempFeeQueryVO.getReqcom());
        return paramters;
    }
}

4.前端处理

 var confirmPay = function (obj) {
            var link = document.createElement('a');
            link.href = 'sincardtempfee/query/export?prtseq='+obj.prtseq+'&agentcode='+obj.agentcode+'&code='+obj.code;
            link.click();
        };