thymeleaf导出pdf文件

  • Z时代
  • 2024-01-10
  • 分类：综合

编程

<dependency>
<groupId>org.xhtmlrenderer</groupId>
<artifactId>flying-saucer-pdf</artifactId>
<version>9.0.7</version>
</dependency>
<dependency>
<groupId>org.thymeleaf</groupId>
<artifactId>thymeleaf</artifactId>
<version>2.1.4.RELEASE</version>
</dependency>

2.创建相关的pdf模板，网上不同的创建pdf模板方式，这里用的是html方式，方便后续进行模板调整，

<h1 class="h1_style">标题</h1>
<div >
<div class="row " style="font-size: 1.75rem;padding-left: 25%;">
<div class="div-inline" >班级</div>
<div style="display: inline-block;padding-left: 3.125rem;">人数：<span>55</span></div>
</div>
</div>

通过thymeleaf语法替换后：

<h1 class="h1_style" th:text="${title}"></h1>
<div th:each="contentObj:${contentList}">
<div class="row " style="font-size: 1.75rem;padding-left: 25%;">
<div class="div-inline" th:text="${contentObj.className}"></div>
<div style="display: inline-block;padding-left: 3.125rem;">人数：<span th:text="${contentObj.totalNum}"></span></div>
</div>
</div>

注：html页面需要引用thymeleaf语法组件：<html xmlns:th="http://www.thymeleaf.org">

3.pdf生成工具类

import com.lowagie.text.DocumentException;
import com.lowagie.text.pdf.BaseFont;
import org.springframework.util.ResourceUtils;
import org.thymeleaf.TemplateEngine;
import org.thymeleaf.context.Context;
import org.thymeleaf.templateresolver.ClassLoaderTemplateResolver;
import org.thymeleaf.templateresolver.TemplateResolver;
import org.xhtmlrenderer.pdf.ITextFontResolver;
import org.xhtmlrenderer.pdf.ITextRenderer;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.Map;
public class PDFGenerator {
	private TemplateResolver templateResolver;
	private TemplateEngine templateEngine;
	public PDFGenerator(
			final String templatePrefix,
			final String templateSuffix){
		this(templatePrefix, templateSuffix, "HTML5", "UTF-8");
	}
	public PDFGenerator(
			final String templatePrefix,
			final String templateSuffix,
			final String templateMode,
			final String templateEncoding){
		this(new ClassLoaderTemplateResolver());
		this.templateResolver.setPrefix(templatePrefix);
		this.templateResolver.setSuffix(templateSuffix);
		this.templateResolver.setTemplateMode(templateMode);
		this.templateResolver.setCharacterEncoding(templateEncoding);
	}
	public PDFGenerator(TemplateResolver templateResolver){
		this.templateResolver = templateResolver;
	}
	public PDFGenerator(TemplateEngine templateEngine){
		this.templateEngine = templateEngine;
	}
	private TemplateEngine getTemplateEngine() {
		if(templateEngine == null){
			templateEngine = new TemplateEngine();
			templateEngine.setTemplateResolver(templateResolver);
		}
		return templateEngine;
	}
	/**
	 * Process the template and generate a PDF of this rendered template.
	 *
	 * @param ouputPDF Target pdf file.
	 * @param template Source template.
	 * @param model The data for the template.
	 * @throws FileNotFoundException
	 * @throws DocumentException
	 */
	public void generate(File ouputPDF, String template, Map<String, ?> model) throws FileNotFoundException, DocumentException {
		final Context ctx = new Context();
	    ctx.setVariables(model);
	    final TemplateEngine templateEngine = getTemplateEngine();
	    String htmlContent = templateEngine.process(template, ctx);
	    ITextRenderer renderer = new ITextRenderer();
	    ITextFontResolver fontResolver = renderer.getFontResolver();
	    try {
		//解决中文支持
		   String path = ResourceUtils.getFile("classpath:templates/simsun.ttf").getPath();
		   fontResolver.addFont(path, BaseFont.IDENTITY_H, BaseFont.NOT_EMBEDDED);
		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
	    // 解决图片的相对路径问题
        //renderer.getSharedContext().setBaseURL("file:/C:/Users/Administrator.WIN7-1610080938/Desktop/word2pdf/");
	    renderer.setDocumentFromString(htmlContent);
	    renderer.layout();
	    renderer.createPDF(new FileOutputStream(ouputPDF));
	}
}

引用对应字体文件：simsun.ttf【宋体】，注：linux系统中需要设置其他字体，需要自己动手找资料设置，pdf文件中需要展示中文，需要在html页面中加入样式

 html{ font-family: SimSun;}

4.构建展示数据，数据格式最好是Map类型

  map.put("title","欢迎来到");
  map.put("contentList",contentList);
//设置模板路径
PDFGenerator pdfGenerator = new PDFGenerator("templates/",".html");
   File file = new File(fileBasePath+filePdfName);
//模板名称
   pdfGenerator.generate(file,"temp",map);

 

 

 

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