基于PDF模板·下载pdf文件

jar包

<!--PDF工具-->
            <dependency>
                <groupId>com.itextpdf</groupId>
                <artifactId>itextpdf</artifactId>
                <version>${itextpdf.version}</version>
            </dependency>

pdf工具类

package com.ruoyi.common.utils.pdf;

import java.io.ByteArrayOutputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.HashMap;
import java.util.Map;
import java.util.UUID;

import com.itextpdf.text.*;
import com.itextpdf.text.pdf.*;
import com.ruoyi.common.config.RuoYiConfig;
import com.sun.deploy.net.HttpDownload;
import com.sun.deploy.net.HttpResponse;
import org.apache.commons.io.IOUtils;

import javax.servlet.http.HttpServletResponse;

public class PdfUtils {
    // 利用模板生成pdf
    public static void pdfout(Map<String,Object> o,String filePath) {
        // 模板路径
        String templatePath = "pdf/xfpdfdemo.pdf";
        // 生成的新文件路径

        String newPDFPath = filePath;

        PdfReader reader;
        FileOutputStream out;
        ByteArrayOutputStream bos;
        PdfStamper stamper;
        try {
            BaseFont bf = BaseFont.createFont("c://windows//fonts//simsun.ttc,1" , BaseFont.IDENTITY_H, BaseFont.EMBEDDED);
            Font FontChinese = new Font(bf, 5, Font.NORMAL);
            out = new FileOutputStream(newPDFPath);// 输出流
            reader = new PdfReader(templatePath);// 读取pdf模板
            bos = new ByteArrayOutputStream();
            stamper = new PdfStamper(reader, bos);
            AcroFields form = stamper.getAcroFields();
            //文字类的内容处理
            Map<String,String> datemap = (Map<String,String>)o.get("datemap");
            form.addSubstitutionFont(bf);
            for(String key : datemap.keySet()){
                String value = datemap.get(key);
                form.setField(key,value);
            }
            //图片类的内容处理
            try {
                Map<String,String> imgmap = (Map<String,String>)o.get("imgmap");
                for(String key : imgmap.keySet()) {
                    String value = imgmap.get(key);
                    String imgpath = value;
                    int pageNo = form.getFieldPositions(key).get(0).page;
                    Rectangle signRect = form.getFieldPositions(key).get(0).position;
                    float x = signRect.getLeft();
                    float y = signRect.getBottom();
                    //根据路径读取图片
                    Image image = Image.getInstance(imgpath);
                    //获取图片页面
                    PdfContentByte under = stamper.getOverContent(pageNo);
                    //图片大小自适应
                    image.scaleToFit(signRect.getWidth(), signRect.getHeight());
                    //添加图片
                    image.setAbsolutePosition(x, y);
                    under.addImage(image);
                }
            } catch (IOException e) {
                e.printStackTrace();
            } catch (DocumentException e) {
                e.printStackTrace();
            }
            stamper.setFormFlattening(true);// 如果为false，生成的PDF文件可以编辑，如果为true，生成的PDF文件不可以编辑
            stamper.close();
            Document doc = new Document();
            PdfCopy copy = new PdfCopy(doc, out);
            doc.open();
            PdfImportedPage importPage = copy.getImportedPage(new PdfReader(bos.toByteArray()), 1);
            copy.addPage(importPage);
            doc.close();


//            IOUtils.write(bos.toByteArray(), response.getOutputStream());
        } catch (IOException e) {
            System.out.println(e);
        } catch (DocumentException e) {
            System.out.println(e);
        }

    }

}

serviceImpl（把一一对应的map格式，传给PdfUtils）

public void xzpdf(String uqprojectid, String filePath) throws NullPointerException {
        Map<String, String> map = new HashMap();
        Map<String, String> map2 = new HashMap();
        Map strafftypemap = new HashMap();
        TxfProject txfProject = txfProjectMapper.selectTxfProjectById(uqprojectid);
        if (txfProject.getUqorgid() != null && !txfProject.getUqorgid().equals("")) {
            TxfOrg txfOrg = txfOrgMapper.selectTxfOrgById(txfProject.getUqorgid());
            //        处理从业人员
            String cyrys = txfProject.getCyry();
            if (cyrys != null && !cyrys.equals("")) {
                String[] cyryList = cyrys.split(",");
                Integer a = 2;
                for (String cyry : cyryList) {
                    TxfUser txfUser = txfUserMapper.selectTxfUserById(cyry);//cyry  保存的多个id
//                    txfUser.getStafftype();//从业人员类别
                    List<SysDictData> sysDictDatalist = sysDictTypeService.selectDictDataByType("4");
                    //变量
                    if (txfUser.getStafftype() != null && !txfUser.getStafftype().equals("")) {
                        String[] types = txfUser.getStafftype().split(",");
                        for (String type : types) {

//                        strafftypemap.put(sysDictData.getDictValue(), sysDictData.getDictLabel());
//                        if (sysDictData.getDictValue().equals("4_1") || sysDictData.getDictValue().equals("4_2")) {

                            if (type.equals("4_1") || type.equals("4_2")) {
                                map.put("username1", txfUser.getUsername());
                                map.put("mobile1", txfUser.getMobile());
                                map.put("certificatenoorg", txfUser.getCertificatenoorg());
                                map2.put("imgCertificatenoorg", txfUser.getImgCertificatenoorg());
                            }
                            if (type.equals("4_5") || type.equals("4_6") || type.equals("4_7")) {
                                map.put("username" + a, txfUser.getUsername());
                                map.put("mobile" + a, txfUser.getMobile());
                                map.put("cto" + a, txfUser.getCto());
                                if (txfUser.getImgSelf() != null && !txfUser.getImgSelf().equals("")) {
                                    TxfFilemap txfFilemap = txfFilemapMapper.selectTxfFilemapById(txfUser.getImgSelf());
                                    map2.put("img" + a, txfFilemap.getFilepath());
                                }
                                a++;
                            }
                        }

                    }
                }

//                保存所有的服务类型内容
                HashMap<String, String> typeHashMap = new HashMap<>();
                String[] types = {"9", "7", "6"};
                for (String type : types) {
//                    查询所有的服务类型内容，便利保存
                    List<SysDictData> sysDictDatas = sysDictTypeService.selectDictDataByType(type);
                    for (SysDictData sysDictData : sysDictDatas) {
                        typeHashMap.put(sysDictData.getDictValue(), sysDictData.getDictLabel());
                    }
                }
                if (txfProject.getServicecontent() != null && !txfProject.getServicecontent().equals("")) {
                    String[] split = txfProject.getServicecontent().split(",");
                    String servicecontent = "";
                    for (int i = 0; i < split.length; i++) {
                        typeHashMap.get(split[i]);
                        if (i == 0) {
                            servicecontent = typeHashMap.get(split[i]);
                        } else {
                            servicecontent += "," + typeHashMap.get(split[i]);
                        }
                    }
                    map.put("servicecontent", servicecontent);
                }
                map.put("jianzhuname", "");
                map.put("orgname", txfOrg.getOrgname());
                SimpleDateFormat simpleDateFormat = new SimpleDateFormat("yyyy年MM月dd日");
                if (txfProject.getContractstartdate() != null) {
                    map.put("contractstartdate", simpleDateFormat.format(txfProject.getContractstartdate()) + "至");
                }
                if (txfProject.getContractenddate() != null) {
                    map.put("contractenddate", simpleDateFormat.format(txfProject.getContractenddate()));
                }
                map.put("tousuphone", "");
                map.put("date", "");

                Map<String, Object> o = new HashMap();
                o.put("datemap", map);
                o.put("imgmap", map2);
                PdfUtils.pdfout(o,filePath);
            }
            return;
        }
    }

controller层

@GetMapping("/downloadGs")
    public void fileDownload(String uqprojectid, HttpServletResponse response, HttpServletRequest request)
    {
        try
        {

            String realFileName =UUID.randomUUID().toString()+".pdf";
            String filePath = RuoYiConfig.getDownloadPath() + realFileName;

            txfProjectService.xzpdf(uqprojectid,filePath);

            response.setCharacterEncoding("utf-8");
            response.setContentType("multipart/form-data");
            response.setHeader("Content-Disposition",
                    "attachment;fileName=" + FileUtils.setFileDownloadHeader(request, realFileName));
            FileUtils.writeBytes(filePath, response.getOutputStream());
//            删除
            FileUtils.deleteFile(filePath);
        }
        catch (Exception e)
        {
            log.error("下载文件失败", e);
        }
    }