PDF文字填充

下载工具并安装
Adobe Acrobat DC 2018 SP

下载完成之后对一个PDF表单进行参数设置

写代码
引入jar包

    <dependency>        <groupId>com.itextpdf</groupId>        <artifactId>itext-asian</artifactId>        <version>5.2.0</version>    </dependency>

com.itextpdf itextpdf 5.5.13.1

写工具类
package jp.utils;

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.*;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;

public class PDFUtils {

/** * 根据模板填充pdf * * @param os       输出流 * @param template 模板 模板制作请参考: https://99designs.com/blog/design-tutorials/pdf-business-card-template-tutorial/ * @param params   K:文本域名称 V:填充的值 */public static boolean fillTemplate(OutputStream os, byte[] template, Map<String, String> params) {// 利用模板生成pdf    boolean result = false;    PdfStamper stamper = null;    PdfReader reader = null;    try {        //  读入pdf表单        reader = new PdfReader(template);        //  根据表单生成一个新的pdf        stamper = new PdfStamper(reader, os);        //  获取pdf表单        AcroFields form = stamper.getAcroFields();        // 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("STSong-Light", "UniGB-UCS2-H", BaseFont.NOT_EMBEDDED);        form.addSubstitutionFont(bf);        // 遍历data 给pdf表单表格赋值        for (Iterator<Map.Entry<String, String>> it = params.entrySet().iterator(); it.hasNext(); ) {            Map.Entry<String, String> entry = it.next();            form.setField(entry.getKey(), entry.getValue());        }        stamper.setFormFlattening(true);        result = true;        //-------------------------------------------------------------        System.out.println("===============PDF导出成功=============");    } catch (Exception e) {        System.out.println("===============PDF导出失败=============");        result = false;        e.printStackTrace();    } finally {        try {            stamper.close();            reader.close();        } catch (Exception e) {            result = false;        }    }    return result;}public static void main(String[] args) throws Exception {    try {        String outPath = "F:/test2.pdf";        String path = "F:/test_wrapper.pdf";        InputStream ins = new BufferedInputStream(new FileInputStream(path));        读取工程目录下的文件        //InputStream ins = Thread.currentThread().getContextClassLoader().getResourceAsStream("template/smmTemplate.pdf");        FileOutputStream os = new FileOutputStream(outPath);        byte[] byt = new byte[ins.available()];        ins.read(byt);        Map<String, String> data = new HashMap<>();        data.put("username", "罗少");        data.put("sex", "36010");        fillTemplate(os, byt, data);    } catch (Exception e) {        e.printStackTrace();    }}

}

以上是直接输入输出；

---

以下是可以直接在浏览器显示下载文件
OutputStream os = null;
InputStream ins = null;
try {

String filename = "授权委托书.pdf";response.reset();response.setContentType("application/pdf");response.setHeader("Content-Disposition", "attachment;filename=" + new String(filename.getBytes("gbk"), "iso8859-1"));        os = response.getOutputStream();        ins = new BufferedInputStream(new FileInputStream(openPath));        byte[] byt = new byte[ins.available()];        ins.read(byt);        fillTemplate(os, byt, params);        response.getOutputStream().flush();    response.getOutputStream().close();    os.close();    ins.close();} catch (Exception e) {try {os.close();    ins.close();} catch (Exception e2) {}} finally{try {os.close();    ins.close();} catch (Exception e2) {}}