java使用html模板导出pdf(使用thymeleaf进行渲染)

• 依赖

    org.springframework.boot
    spring-boot-starter-thymeleaf


    
    com.openhtmltopdf
    openhtmltopdf-core
    1.0.0


    
    com.openhtmltopdf
    openhtmltopdf-pdfbox
    1.0.0

• 工具类

package com.shell.common.utils.pdf;

import com.openhtmltopdf.pdfboxout.PdfRendererBuilder;
import org.springframework.util.ResourceUtils;
import org.thymeleaf.context.Context;
import org.thymeleaf.spring5.SpringTemplateEngine;
import org.thymeleaf.templateresolver.ClassLoaderTemplateResolver;
import java.io.OutputStream;
import java.util.Map;

public class PdfUtil {
    
    public static void buildPdf(OutputStream os, String pdfFileName, String templateName, Map variables) throws Exception {
        //构造模板引擎
        ClassLoaderTemplateResolver resolver = new ClassLoaderTemplateResolver();
        resolver.setPrefix("templates/");//模板所在目录，相对于当前classloader的classpath。
        resolver.setSuffix(".html");//模板文件后缀
        SpringTemplateEngine templateEngine = new SpringTemplateEngine();
        templateEngine.setTemplateResolver(resolver);
        //构造上下文(Model)
        Context context = new Context();
        context.setVariable("templateName", templateName);
        context.setVariable("pdfFileName", pdfFileName);
        context.setVariables(variables);
        //渲染模板
        String example = templateEngine.process(templateName, context);
        PdfRendererBuilder builder = new PdfRendererBuilder();
        builder.useFont(ResourceUtils.getFile("classpath:templates/fonts/simsun.ttf"), "simsun");
        builder.useFastMode();
        builder.withHtmlContent(example, ResourceUtils.getURL("classpath:templates/img/").toString());
        builder.toStream(os);
        builder.run();

    }
}

• 测试代码

package com.step.pdf.demo.controller;
import com.step.pdf.demo.util.PdfUtil;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;
import javax.servlet.http.HttpServletResponse;
import java.util.Arrays;
import java.util.HashMap;
import java.util.Map;
@RestController
public class DemoController {
    @GetMapping("pdf")
    public void test(HttpServletResponse response) throws Exception {
        Map variables = new HashMap<>();
        variables.put("assessmentTypeName", "测试");
        variables.put("staffName", "staffName");
        variables.put("functions", "functions");
        variables.put("assessmentDate", "assessmentDate");
        variables.put("roles", "roles");
        variables.put("score", "score");
        variables.put("signature", "signature");
        PdfUtil.buildPdf(response, "用于测试的pdf", "parent", variables);
    }
}

• 模板代码

    
    
    
    



    

    

        

            

                
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