Html 转pdf - 技术栈

xml 复制代码

<dependency>
            <groupId>com.itextpdf</groupId>
            <artifactId>itextpdf</artifactId>
            <version>5.5.11</version>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-thymeleaf</artifactId>
        </dependency>
        <dependency>
            <groupId>com.itextpdf</groupId>
            <artifactId>html2pdf</artifactId>
            <version>4.0.3</version>
        </dependency>

xml 复制代码

<!DOCTYPE html>
<html lang="zh" xmlns:th="http://www.thymeleaf.org">
<head>
    <meta charset="UTF-8"/>
    <title>2</title>
    <style>
        /*这是将打印时的页面大小设置为A4大小，并保留好一定的边距 210×297mm*/
        /*@page {*/
        /*    size: 21cm 29.7cm;*/
        /*    font-size: 14pt;*/
        /*    color: black;*/
        /*    line-height: 1.4;*/
        /*    text-align: justify;*/
        /*    margin: 0;*/
        /*    padding: 0;*/
        /*}*/
        /*body {*/
        /*    font-family: FZLanTingHei-L-GBK;*/
        /*    width: 21cm;*/
        /*    height: 29.7cm;*/
        /*    margin: 0;*/
        /*    padding: 0;*/
        /*    overflow: hidden;*/
        /*}*/
        /*img{*/
        /*    width: 21cm;*/
        /*    height: 29.7cm;*/
        /*}*/
    </style>
</head>
<body>
<h1 th:text="${title}">Default Title</h1>
<p th:text="${content}">Default Content</p>
<div align="center">
    <img th:src="${imagePath}" alt="这是一张美丽的风景照片"/>

</div>
</body>
</html>

java 复制代码

public void generatePdf(HttpServletResponse response) throws IOException {
        // 将图片转换为Base64编码
//        byte[] imageBytes = Files.readAllBytes(Paths.get(imagePath));
//        String base64Image = Base64.getEncoder().encodeToString(imageBytes);
        // 动态数据
        Map<String, Object> data = new HashMap<>();
        data.put("title", "Hello, World!");
        data.put("content", "This is a dynamic content.");
        data.put("imagePath", imagePath); // 路径
        // 使用 Thymeleaf 渲染模板
        Context context = new Context();
        context.setVariables(data);
        String htmlContent = templateEngine.process("templates", context);

        try (FileOutputStream outputStream = new FileOutputStream(filePath)) {
            // 读取HTML模板
            HtmlConverter.convertToPdf(htmlContent, outputStream);
        } catch (Exception e) {
            e.printStackTrace();
        }
    }