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springboot+itextpdf+thymeleaf+ognl根据静态模版文件实现动态生成pdf文件并导出demo

news 来源：原创 2025/5/10 22:41:17

第一步：导入maven依赖

<!-- 导出为PDF依赖包 -->
        <dependency>
            <groupId>com.itextpdf</groupId>
            <artifactId>itextpdf</artifactId>
        </dependency>
        <dependency>
            <groupId>com.itextpdf</groupId>
            <artifactId>itext-asian</artifactId>
        </dependency>
        <dependency>
            <groupId>com.itextpdf.tool</groupId>
            <artifactId>xmlworker</artifactId>
            <version>5.5.13.3</version>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-thymeleaf</artifactId>
        </dependency>
        <dependency>
            <groupId>ognl</groupId>
            <artifactId>ognl</artifactId>
            <version>3.1.12</version>
        </dependency>

第二步：制作thymeleaf静态模版文件并放置在resources目录下，可以自定义模版文件路径

如图所示

thymeleaf静态文件示例（附，在线实时制作预览html文件网址：https://www.jyshare.com/front-end/61/）：
<html lang="en" xmlns:th="http://www.w3.org/1999/xhtml">

<head>
    <meta charset="utf-8"/>
    <title>xxxx模版</title>

    <style>

        #mainTable {
            border-collapse: collapse;
            border-style: solid;
            border-width: 0.5pt;
            width: 100%;
        }

        #mainTable td{
            text-align: center;
            padding: 8px;
            border-style: solid;
            border-width: 0.5pt;
        }
    </style>
</head>

<body>
    <table id="header" boder="0" cellpadding="0" cellspacing="0" width="100%" style="margin-bottom:10px;margin-top:10px;">
        <tbody>
            <tr>
                <td id="img" rowspan="3"><img th:src="${xxxx}" style="border-radius: 50%;-webkit-border-radius: 50%;-moz-border-radius: 50%;-ms-border-radius: 50%;-o-border-radius: 50%;width: 60%;height: 60%;"/></td>
                <td id="mainTitle" colspan="5" th:text="'&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;'+${xxxx}" style="font-size: 30px;font-style: '+';font-weight: bold;padding-left:30%;padding-bottom:10px;"></td>
            </tr>
            <tr>
                <td></td>
                <td id="xxxx" colspan="5" th:text="${xxxx}+哈哈" style="font-size: 30px;font-style: '+';font-weight: bold;padding-left:45%;padding-top:10px;"></td>
            </tr>
            <tr>
                <td></td>
                <td id="xxxx" colspan="5" style="text-align:right;padding-right:0px;">xxxx: <span  th:text="${xxxx}"></span></td>
            </tr>
        </tbody>
    </table>

    <table id="mainTable">
        <tbody>
            <tr>
                <td>xxxx</td>
                <td th:text="${xxxx}"></td>
                <td>xxxx</td>
                <td th:text="${xxxx}"></td>
                <td>xxxx</td>
                <td th:text="${xxxx} + ${xxxx}"></td>
            </tr>
            <tr>
                <td>xxxx</td>
                <td colspan="2" th:text="${xxxx}"></td>
                <td>xxxx</td>
                <td colspan="2" th:text="${xxxx}"></td>
            </tr>
            <tr>
                <td>xxxx</td>
                <td colspan="2" th:text="${xxxx}"></td>
                <td>xxxx</td>
                <td colspan="2" th:text="${xxxx}"></td>
            </tr>

            <tr>
                <td>xxxx</td>
                <td colspan="2" th:text="${xxxx} + '/' + ${xxxx}"></td>
                <td>xxxx</td>
                <td colspan="2" th:text="${xxxx}"></td>
            </tr>
            <tr>
                <td>xxxx</td>
                <td colspan="5" style="text-align:left;" th:text="${xxxx}"></td>
            </tr>
            <tr>
                <td>xxxx</td>
                <td colspan="2" th:text="${xxxx}"></td>
                <td>xxxx</td>
                <td colspan="2" th:text="${xxxx}"></td>
            </tr>
            <tr>
                <td height="250">xxxx</td>
                <td colspan="5" style="text-align:left;" th:text="${xxxxx}"></td>
            </tr>
            <tr>
                <td height="250">xxxx</td>
                <td colspan="5" style="text-align:left;" th:text="${xxxx}"></td>
            </tr>
            <tr>
                <td>xxxx</td>
                <td colspan="5" style="text-align:left;"><img th:src="${xxxx}" style="width: 50%;height: 30%;"/></td>
            </tr>
        </tbody>
    </table>

    <div style="margin-top:40px;">
        <p>注:xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
        </p>
    </div>


</body>

</html>

第三步：实现编写生成pdf与下载工具，注意区分项目格式是war包还是jar包，目前我这边是两套实现方案。

jar包的方案是否同样适用于war包，我这边没有尝试，有兴趣的可以自己尝试，然后在评论区分享一下。

1）在jar包环境下加载静态模版文件时的代码示例：

静态模版无需加载包含base64格式的图片内容时，可用以下代码处理：

import com.itextpdf.text.Document;
import com.itextpdf.text.DocumentException;
import com.itextpdf.text.Font;
import com.itextpdf.text.PageSize;
import com.itextpdf.text.pdf.BaseFont;
import com.itextpdf.text.pdf.PdfWriter;
import com.itextpdf.tool.xml.XMLWorkerFontProvider;
import com.itextpdf.tool.xml.XMLWorkerHelper;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.io.IOUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.ApplicationContext;
import org.springframework.stereotype.Component;
import org.springframework.util.CollectionUtils;
import org.thymeleaf.TemplateEngine;
import org.thymeleaf.context.Context;
import org.thymeleaf.spring5.templateresolver.SpringResourceTemplateResolver;
import org.thymeleaf.templatemode.TemplateMode;

import javax.servlet.http.HttpServletResponse;
import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.nio.charset.Charset;
import java.nio.charset.StandardCharsets;
import java.util.List;
import java.util.Map;

/**
 * @author leon
 * @date 2023/8/15
 * @description pdf 模版下载工具
 *
 */
@Component
@Slf4j
public class PdfTemplateDownload {

    @Autowired
    private ApplicationContext applicationContext;

    /**
     * 下载pdf模版
     * @param response
     * @param paramMap
     * @param templateFileName
     * @param outputFileName
     */
    public void downloadPdfTemplate(HttpServletResponse response,
                                    Map<String, Object> paramMap,
                                    String templateFileName,
                                    String outputFileName) {
        try {
            // 创建基于类路径资源的模板解析器
            SpringResourceTemplateResolver resolver = new SpringResourceTemplateResolver();
            resolver.setApplicationContext(applicationContext); // 你需要注入Spring的应用上下文
            resolver.setTemplateMode(TemplateMode.HTML);
            resolver.setCharacterEncoding(StandardCharsets.UTF_8.name());
            resolver.setCacheable(true); // 在开发阶段设置为false，生产环境可改为true
            resolver.setPrefix("classpath:/file/");
            resolver.setSuffix(".html");

            // 创建模版引擎
            TemplateEngine engine = new TemplateEngine();
            engine.setTemplateResolver(resolver);

            // 填充变量参数
            Context context = new Context();
            paramMap.forEach((k,v) -> context.setVariable(k, v));
            // 替换变量值
            String output = engine.process(templateFileName, context);

            // 设置导出文件名
            String exportName = "attachment;filename="+outputFileName;
            response.setHeader("Content-Disposition",new String(exportName.getBytes(StandardCharsets.UTF_8),"ISO8859-1"));
            response.setContentType("application/mspdf");
            response.setCharacterEncoding("utf-8");

            // 新建Document对象
            Document document = new Document(PageSize.A4);
            // 新建PdfWriter对象
            PdfWriter pdfWriter = PdfWriter.getInstance(document, response.getOutputStream());
            // 打开文档
            document.open();
            // 读取html文件内容
            InputStream htmlInputStream = new ByteArrayInputStream(output.getBytes(StandardCharsets.UTF_8));
            // 使用XMLWorkerHelper将html内容转为pdf
            XMLWorkerHelper xmlWorkerHelper = XMLWorkerHelper.getInstance();
            xmlWorkerHelper.parseXHtml(pdfWriter, document, htmlInputStream, Charset.forName("UTF-8"), new AsianFontProvider());
            // 关闭文档
            document.close();
            // 关闭输入流
            htmlInputStream.close();
            // 关闭文件输出流
            IOUtils.closeQuietly(response.getOutputStream());
        }
        catch (IOException e) {
            log.error("", e);
        }
        catch (DocumentException e) {
            log.error("", e);
        }
    }

    /**
     * 用于中文显示的Provider
     */
    class AsianFontProvider extends XMLWorkerFontProvider {
        @Override
        public Font getFont(final String fontname, String encoding, float size, final int style) {
            try {
                BaseFont bfChinese = BaseFont.createFont("STSongStd-Light", "UniGB-UCS2-H", BaseFont.NOT_EMBEDDED);
                return new Font(bfChinese, size, style);
            }
            catch (Exception e) {
            }
            return super.getFont(fontname, encoding, size, style);
        }
    }


    
}
若静态模版中有base64格式的图片信息，可换用下边的方法实现

import com.itextpdf.text.Document;
import com.itextpdf.text.DocumentException;
import com.itextpdf.text.Font;
import com.itextpdf.text.PageSize;
import com.itextpdf.text.pdf.BaseFont;
import com.itextpdf.text.pdf.PdfWriter;
import com.itextpdf.tool.xml.Pipeline;
import com.itextpdf.tool.xml.XMLWorker;
import com.itextpdf.tool.xml.XMLWorkerFontProvider;
import com.itextpdf.tool.xml.XMLWorkerHelper;
import com.itextpdf.tool.xml.css.CssFilesImpl;
import com.itextpdf.tool.xml.css.StyleAttrCSSResolver;
import com.itextpdf.tool.xml.html.CssAppliersImpl;
import com.itextpdf.tool.xml.html.HTML;
import com.itextpdf.tool.xml.html.TagProcessorFactory;
import com.itextpdf.tool.xml.html.Tags;
import com.itextpdf.tool.xml.parser.XMLParser;
import com.itextpdf.tool.xml.pipeline.css.CssResolverPipeline;
import com.itextpdf.tool.xml.pipeline.end.PdfWriterPipeline;
import com.itextpdf.tool.xml.pipeline.html.HtmlPipeline;
import com.itextpdf.tool.xml.pipeline.html.HtmlPipelineContext;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.io.IOUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.ApplicationContext;
import org.springframework.stereotype.Component;
import org.springframework.util.CollectionUtils;
import org.thymeleaf.TemplateEngine;
import org.thymeleaf.context.Context;
import org.thymeleaf.spring5.templateresolver.SpringResourceTemplateResolver;
import org.thymeleaf.templatemode.TemplateMode;

import javax.servlet.http.HttpServletResponse;
import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.nio.charset.Charset;
import java.nio.charset.StandardCharsets;
import java.util.List;
import java.util.Map;

/**
 * @author leon
 * @date 2023/8/15
 * @description pdf 模版下载工具
 *
 */
@Component
@Slf4j
public class PdfTemplateDownload {


    @Autowired
    private ApplicationContext applicationContext;

    

    /**
     * 下载pdf模版，用于模版中需要展示base64格式的图片信息
     * @param response
     * @param paramMap
     * @param templateFileName
     * @param outputFileName
     */
    public void downloadPdfTemplateForBase64Img(HttpServletResponse response,
                                    Map<String, Object> paramMap,
                                    String templateFileName,
                                    String outputFileName) {
        try {
            // 创建基于类路径资源的模板解析器
            SpringResourceTemplateResolver resolver = new SpringResourceTemplateResolver();
            resolver.setApplicationContext(applicationContext); // 你需要注入Spring的应用上下文
            resolver.setTemplateMode(TemplateMode.HTML);
            resolver.setCharacterEncoding(StandardCharsets.UTF_8.name());
            resolver.setCacheable(true); // 在开发阶段设置为false，生产环境可改为true
            resolver.setPrefix("classpath:/file/");
            resolver.setSuffix(".html");

            // 创建模版引擎
            TemplateEngine engine = new TemplateEngine();
            engine.setTemplateResolver(resolver);

            // 填充变量参数
            Context context = new Context();
            paramMap.forEach((k,v) -> context.setVariable(k, v));
            // 替换变量值
            String output = engine.process(templateFileName, context);

            // 设置导出文件名
            String exportName = "attachment;filename="+outputFileName;
            response.setHeader("Content-Disposition",new String(exportName.getBytes(StandardCharsets.UTF_8),"ISO8859-1"));
            response.setContentType("application/pdf");
            response.setCharacterEncoding("utf-8");

            // 新建Document对象
            Document document = new Document(PageSize.A4);
            // 新建PdfWriter对象
            PdfWriter pdfWriter = PdfWriter.getInstance(document, response.getOutputStream());
            // 打开文档
            document.open();
            // 自定义处理base64图片
            final TagProcessorFactory htmlTagProcessorFactory = Tags.getHtmlTagProcessorFactory();
            htmlTagProcessorFactory.removeProcessor(HTML.Tag.IMG);
            htmlTagProcessorFactory.addProcessor(new ImageTagProcessor(),HTML.Tag.IMG);

            final Charset charset = StandardCharsets.UTF_8;
            final CssFilesImpl cssFiles = new CssFilesImpl();
            cssFiles.add(XMLWorkerHelper.getInstance().getDefaultCSS());
            final StyleAttrCSSResolver cssResolver = new StyleAttrCSSResolver(cssFiles);
            final HtmlPipelineContext hpc = new HtmlPipelineContext(new CssAppliersImpl(new AsianFontProvider()));
            hpc.setAcceptUnknown(true).autoBookmark(true).setTagFactory(htmlTagProcessorFactory);
            final HtmlPipeline htmlPipeline = new HtmlPipeline(hpc, new PdfWriterPipeline(document, pdfWriter));
            final Pipeline<?> pipeline = new CssResolverPipeline(cssResolver, htmlPipeline);
            final XMLWorker worker = new XMLWorker(pipeline, true);
            final XMLParser p = new XMLParser(true, worker, charset);
            // 读取html文件内容
            InputStream htmlInputStream = new ByteArrayInputStream(output.getBytes(charset));
            p.parse(htmlInputStream, charset);

            // 关闭文档
            document.close();
            // 关闭输入流
            htmlInputStream.close();
            // 关闭文件输出流
            IOUtils.closeQuietly(response.getOutputStream());
        }
        catch (IOException e) {
            log.error("", e);
        }
        catch (DocumentException e) {
            log.error("", e);
        }
    }

    /**
     * 用于中文显示的Provider
     */
    class AsianFontProvider extends XMLWorkerFontProvider {
        @Override
        public Font getFont(final String fontname, String encoding, float size, final int style) {
            try {
                BaseFont bfChinese = BaseFont.createFont("STSongStd-Light", "UniGB-UCS2-H", BaseFont.NOT_EMBEDDED);
                return new Font(bfChinese, size, style);
            }
            catch (Exception e) {
            }
            return super.getFont(fontname, encoding, size, style);
        }
    }


   

}

2）在war包环境下加载静态模版文件时的代码示例：

包含了静态模版中需要加载与不需要加载base64格式的图片内容时的两个方法实现示例：

import com.itextpdf.text.Document;
import com.itextpdf.text.DocumentException;
import com.itextpdf.text.Font;
import com.itextpdf.text.PageSize;
import com.itextpdf.text.pdf.BaseFont;
import com.itextpdf.text.pdf.PdfWriter;
import com.itextpdf.tool.xml.Pipeline;
import com.itextpdf.tool.xml.XMLWorker;
import com.itextpdf.tool.xml.XMLWorkerFontProvider;
import com.itextpdf.tool.xml.XMLWorkerHelper;
import com.itextpdf.tool.xml.css.CssFilesImpl;
import com.itextpdf.tool.xml.css.StyleAttrCSSResolver;
import com.itextpdf.tool.xml.html.CssAppliersImpl;
import com.itextpdf.tool.xml.html.HTML;
import com.itextpdf.tool.xml.html.TagProcessorFactory;
import com.itextpdf.tool.xml.html.Tags;
import com.itextpdf.tool.xml.parser.XMLParser;
import com.itextpdf.tool.xml.pipeline.css.CssResolverPipeline;
import com.itextpdf.tool.xml.pipeline.end.PdfWriterPipeline;
import com.itextpdf.tool.xml.pipeline.html.HtmlPipeline;
import com.itextpdf.tool.xml.pipeline.html.HtmlPipelineContext;
import com.wondersgroup.healthcloud.exception.CommonException;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.io.IOUtils;
import org.springframework.stereotype.Component;
import org.springframework.util.CollectionUtils;
import org.springframework.util.ObjectUtils;
import org.thymeleaf.TemplateEngine;
import org.thymeleaf.context.Context;
import org.thymeleaf.templatemode.TemplateMode;
import org.thymeleaf.templateresolver.FileTemplateResolver;

import javax.servlet.http.HttpServletResponse;
import java.io.ByteArrayInputStream;
import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.net.URL;
import java.nio.charset.Charset;
import java.nio.charset.StandardCharsets;
import java.util.List;
import java.util.Map;

/**
 * @author leon
 * @date 2023/8/15
 * @description pdf 模版下载工具
 *
 */
@Component
@Slf4j
public class PdfTemplateDownload {


    /**
     * 下载pdf模版
     * @param response
     * @param paramMap
     * @param templateFileName
     * @param outputFileName
     */
    public void downloadPdfTemplate(HttpServletResponse response,
                                    Map<String, Object> paramMap,
                                    String templateFileName,
                                    String outputFileName) {
        try {
            URL url = PdfTemplateDownload.class.getClassLoader().getResource("file/"+templateFileName);
            if (ObjectUtils.isEmpty(url)) {
                throw new CommonException("下载模版文件缺失");
            }
            File htmlFile = new File(url.getPath());

            // 创建html文件解析器
            FileTemplateResolver resolver = new FileTemplateResolver();
            resolver.setTemplateMode(TemplateMode.HTML);
            resolver.setSuffix(".html");

            // 创建模版引擎
            TemplateEngine engine = new TemplateEngine();
            engine.setTemplateResolver(resolver);

            // 填充变量参数
            Context context = new Context();
            paramMap.forEach((k,v) -> context.setVariable(k, v));
            // 替换变量值
            String output = engine.process(htmlFile.getAbsolutePath(), context);

            // 设置导出文件名
            String exportName = "attachment;filename="+outputFileName;
            response.setHeader("Content-Disposition",new String(exportName.getBytes(StandardCharsets.UTF_8),"ISO8859-1"));
            response.setContentType("application/pdf");
            response.setCharacterEncoding("utf-8");

            // 新建Document对象
            Document document = new Document(PageSize.A4);
            // 新建PdfWriter对象
            PdfWriter pdfWriter = PdfWriter.getInstance(document, response.getOutputStream());
            // 打开文档
            document.open();
            // 读取html文件内容
            InputStream htmlInputStream = new ByteArrayInputStream(output.getBytes(StandardCharsets.UTF_8));
            // 使用XMLWorkerHelper将html内容转为pdf
            XMLWorkerHelper xmlWorkerHelper = XMLWorkerHelper.getInstance();
            xmlWorkerHelper.parseXHtml(pdfWriter, document, htmlInputStream, Charset.forName("UTF-8"), new AsianFontProvider());
            // 关闭文档
            document.close();
            // 关闭输入流
            htmlInputStream.close();
            // 关闭文件输出流
            IOUtils.closeQuietly(response.getOutputStream());
        }
        catch (IOException e) {
            log.error("", e);
        }
        catch (DocumentException e) {
            log.error("", e);
        }
    }



    /**
     * 下载pdf模版，用于模版中需要展示base64格式的图片信息
     * @param response
     * @param paramMap
     * @param templateFileName
     * @param outputFileName
     */
    public void downloadPdfTemplateForBase64Img(HttpServletResponse response,
                                    Map<String, Object> paramMap,
                                    String templateFileName,
                                    String outputFileName) {
        try {
            URL url = PdfTemplateDownload.class.getClassLoader().getResource("file/"+templateFileName);
            if (ObjectUtils.isEmpty(url)) {
                throw new CommonException("下载模版文件缺失");
            }
            File htmlFile = new File(url.getPath());

            // 创建html文件解析器
            FileTemplateResolver resolver = new FileTemplateResolver();
            resolver.setTemplateMode(TemplateMode.HTML);
            resolver.setSuffix(".html");

            // 创建模版引擎
            TemplateEngine engine = new TemplateEngine();
            engine.setTemplateResolver(resolver);

            // 填充变量参数
            Context context = new Context();
            paramMap.forEach((k,v) -> context.setVariable(k, v));
            // 替换变量值
            String output = engine.process(htmlFile.getAbsolutePath(), context);

            // 设置导出文件名
            String exportName = "attachment;filename="+outputFileName;
            response.setHeader("Content-Disposition",new String(exportName.getBytes(StandardCharsets.UTF_8),"ISO8859-1"));
            response.setContentType("application/pdf");
            response.setCharacterEncoding("utf-8");

            // 新建Document对象
            Document document = new Document(PageSize.A4);
            // 新建PdfWriter对象
            PdfWriter pdfWriter = PdfWriter.getInstance(document, response.getOutputStream());
            // 打开文档
            document.open();
            // 自定义处理base64图片
            final TagProcessorFactory htmlTagProcessorFactory = Tags.getHtmlTagProcessorFactory();
            htmlTagProcessorFactory.removeProcessor(HTML.Tag.IMG);
            htmlTagProcessorFactory.addProcessor(new ImageTagProcessor(),HTML.Tag.IMG);

            final Charset charset = StandardCharsets.UTF_8;
            final CssFilesImpl cssFiles = new CssFilesImpl();
            cssFiles.add(XMLWorkerHelper.getInstance().getDefaultCSS());
            final StyleAttrCSSResolver cssResolver = new StyleAttrCSSResolver(cssFiles);
            final HtmlPipelineContext hpc = new HtmlPipelineContext(new CssAppliersImpl(new AsianFontProvider()));
            hpc.setAcceptUnknown(true).autoBookmark(true).setTagFactory(htmlTagProcessorFactory);
            final HtmlPipeline htmlPipeline = new HtmlPipeline(hpc, new PdfWriterPipeline(document, pdfWriter));
            final Pipeline<?> pipeline = new CssResolverPipeline(cssResolver, htmlPipeline);
            final XMLWorker worker = new XMLWorker(pipeline, true);
            final XMLParser p = new XMLParser(true, worker, charset);
            // 读取html文件内容
            InputStream htmlInputStream = new ByteArrayInputStream(output.getBytes(charset));
            p.parse(htmlInputStream, charset);

            // 关闭文档
            document.close();
            // 关闭输入流
            htmlInputStream.close();
            // 关闭文件输出流
            IOUtils.closeQuietly(response.getOutputStream());
        }
        catch (IOException e) {
            log.error("", e);
        }
        catch (DocumentException e) {
            log.error("", e);
        }
    }

    /**
     * 用于中文显示的Provider
     */
    class AsianFontProvider extends XMLWorkerFontProvider {
        @Override
        public Font getFont(final String fontname, String encoding, float size, final int style) {
            try {
                BaseFont bfChinese = BaseFont.createFont("STSongStd-Light", "UniGB-UCS2-H", BaseFont.NOT_EMBEDDED);
                return new Font(bfChinese, size, style);
            }
            catch (Exception e) {
            }
            return super.getFont(fontname, encoding, size, style);
        }
    }



}

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