通过Java组件iText生成PDF报表或合同，完成pdf上传，预览，存入数据库

因业务需要，做了一个通过Java组件iText生成PDF合同，运行成功了，做个记录，也分享给大家。

首先，我们需要准备好一个有文本域的pdf文件。
1.先用word做出你需要的模板，并保存。

2.通过Adobe Acrobat Pro DC软件打开：文件—创建—从文件创建PDF—选择你的word文件并等待一分钟左右。如果没有Adobe Acrobat Pro DC软件，可以去下载（Adobe Acrobat Pro DC**版下载）。

3.点击“准备表单”—“开始”—“保存”—“确定”


4.“添加文本域”—依次添加文本域，并修改名字—点击保存。

此时，pdf文件就已经准备好了。

然后，我们就开始准备代码了。
代码参考来源：https://blog.csdn.net/u012377333/article/details/51264122
前提：在pom文件里添加项目需要的依赖：

<dependency>
      <groupId>com.itextpdf</groupId>
      <artifactId>itextpdf</artifactId>
      <version>5.5.10</version>
</dependency>
// 设置字体，防止中文乱码
<dependency>
      <groupId>com.itextpdf</groupId>
      <artifactId>itext-asian</artifactId>
      <version>5.2.0</version>
</dependency>

1.根据你的pdf中需要填的字段创建实体类-Ticket

package com.ymy.model;/*
 @author ymy
 @DESCRIPTION ${DESCRIPTION}
 @create 2019/4/12
*/

public class Ticket {

    Integer fileId;
    String productName;
    String name;
    String idCard;
    String tel;
    String address;
    
    public Ticket() {
    }

    public Ticket(Integer fileId, String productName, String name, String idCard, String tel, String address) {
        this.fileId = fileId;
        this.productName = productName;
        this.name = name;
        this.idCard = idCard;
        this.tel = tel;
        this.address = address;
    }

    public Integer getFileId() {
        return fileId;
    }

    public void setFileId(Integer fileId) {
        this.fileId = fileId;
    }

    public String getProductName() {
        return productName;
    }

    public void setProductName(String productName) {
        this.productName = productName;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public String getIdCard() {
        return idCard;
    }

    public void setIdCard(String idCard) {
        this.idCard = idCard;
    }

    public String getTel() {
        return tel;
    }

    public void setTel(String tel) {
        this.tel = tel;
    }

    public String getAddress() {
        return address;
    }

    public void setAddress(String address) {
        this.address = address;
    }
}

2.创建功能类-PDFTempletTicket

package com.ymy.util;/*
 @author ymy
 @DESCRIPTION ${DESCRIPTION}
 @create 2019/4/12
*/

import com.ymy.model.*;

import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.FileOutputStream;
import java.util.ArrayList;

import com.itextpdf.text.pdf.AcroFields;
import com.itextpdf.text.pdf.BaseFont;
import com.itextpdf.text.pdf.PdfReader;
import com.itextpdf.text.pdf.PdfStamper;

public class PDFTempletTicket {

    private String templatePdfPath;
    private String ttcPath;
    private String targetPdfpath;
    private Ticket ticket;

    public PDFTempletTicket() {
        super();
    }

    public PDFTempletTicket(String templatePdfPath, String ttcPath,
                           String targetPdfpath, Ticket ticket) {
        this.templatePdfPath= templatePdfPath;
        this.ttcPath= ttcPath;
        this.targetPdfpath= targetPdfpath;
        this.ticket= ticket;
    }

    public void templetTicket(File file) throws Exception {

        PdfReader reader = new PdfReader(templatePdfPath);
        ByteArrayOutputStream bos = new ByteArrayOutputStream();
        PdfStamper ps = new PdfStamper(reader, bos);

        /*使用中文字体 */
        BaseFont bf = BaseFont.createFont("STSong-Light", "UniGB-UCS2-H", BaseFont.NOT_EMBEDDED);

        /*BaseFont bf = BaseFont.createFont(PDFTicket.class.getResource("/") + "org/csun/ns/util/simsun.ttc,1", BaseFont.IDENTITY_H, BaseFont.EMBEDDED);*/

        ArrayList<BaseFont> fontList = new ArrayList<BaseFont>();
        fontList.add(bf);

        AcroFields s = ps.getAcroFields();
        s.setSubstitutionFonts(fontList);

        s.setField("productName",ticket.getProductName());
        s.setField("name",ticket.getName());
        s.setField("idCard",ticket.getIdCard());
        s.setField("tel",ticket.getTel());
        s.setField("address",ticket.getAddress());

        ps.setFormFlattening(false);
        ps.close();

        FileOutputStream fos = new FileOutputStream(file);
        fos.write(bos.toByteArray());
        fos.close();
    }

    /**
     * @return the templatePdfPath
     */
    public String getTemplatePdfPath() {
        return templatePdfPath;
    }

    /**
     * @param templatePdfPath the templatePdfPathto set
     */
    public void setTemplatePdfPath(String templatePdfPath) {
        this.templatePdfPath= templatePdfPath;
    }

    /**
     * @return the ttcPath
     */
    public String getTtcPath() {
        return ttcPath;
    }

    /**
     * @param ttcPath the ttcPath to set
     */
    public void setTtcPath(String ttcPath) {
        this.ttcPath= ttcPath;
    }

    /**
     * @return the targetPdfpath
     */
    public String getTargetPdfpath() {
        return targetPdfpath;
    }

    /**
     * @param targetPdfpath the targetPdfpath toset
     */
    public void setTargetPdfpath(String targetPdfpath) {
        this.targetPdfpath= targetPdfpath;
    }

    /**
     * @return the ticket
     */
    public Ticket getTicket() {
        return ticket;
    }

    /**
     * @param ticket the ticket to set
     */
    public void setTicket(Ticket ticket) {
        this.ticket= ticket;
    }
}

3.测试类-TestTempletTicket

package com.ymy.util;/*
 @author ymy
 @DESCRIPTION ${DESCRIPTION}
 @create 2019/4/12
*/

import com.ymy.model.Ticket;

import java.io.File;

public class TestTempletTicket {

    public static void main(String[] args) throws Exception {

        Ticket ticket = new Ticket();

        ticket.setProductName("产品一");
        ticket.setName("张三");
        ticket.setIdCard("411323166517786546");
        ticket.setTel("15723546678");
        ticket.setAddress("上海市浦东新区");

        PDFTempletTicket pdfTT = new PDFTempletTicket();

        pdfTT.setTemplatePdfPath("D:\\file.pdf");//你的pdf模板的位置
        pdfTT.setTargetPdfpath("D:\\successFile.pdf");
        pdfTT.setTicket(ticket);

        File file = new File("D:\\successFile.pdf");
        file.createNewFile();
        pdfTT.templetTicket(file);
    }
}

最后，运行成功出来：