CSDN

Java-模板生成PDF方式3-HtmlToPDF

2023-06-06 15:05 由 西可 发表于 #后端开发

使用thymeleaf做html模板,由xhtmlrenderer/flying-saucer-pdf-openpdf将html转为PDF

LGPL 和 MPL 许可

pom.xml引入依赖

<!--thymeleaf模板引擎 -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-thymeleaf</artifactId>
            <version>2.5.5</version>
        </dependency>

        <dependency>
            <groupId>org.xhtmlrenderer</groupId>
            <artifactId>flying-saucer-pdf-openpdf</artifactId>
            <version>9.1.20</version>
        </dependency>

yml增加配置

spring:
  thymeleaf:
    cache: false
    prefix: classpath:/templates/
    suffix: .html
    mode: HTML
    encoding: UTF-8

工具类转换

    public void htmlToPDF(OutputStream outputStream, Message message, List<String> pickVolunteers, Map<String, List<DictData>> allVolunteers, List<DictData> volunteerTypes) throws IOException {

        Context context = new Context();
        context.setVariable("requestMessage", message);
        buildApplicationType(message.getVolunteerType(),volunteerTypes);
        context.setVariable("volunteerTypes",  volunteerTypes);
        buildAllAvailableApp(pickVolunteers,allVolunteers);
        context.setVariable("allVolunteers",  allVolunteers);
        context.setVariable("yesConfirm",  true);
        context.setVariable("noConfirm",  false);

        // 模板数据转换
        String htmlStr = templateEngine.process(TEMPLATE, context);

        ITextRenderer renderer = new ITextRenderer();
        SharedContext sharedContext = renderer.getSharedContext();
        // 打印
        sharedContext.setPrint(true);
        // 互动
        sharedContext.setInteractive(false);
        // 设置中文字体
        ITextFontResolver fontResolver = renderer.getFontResolver();
        fontResolver.addFont(FONT_SIMHEI, BaseFont.IDENTITY_H, BaseFont.NOT_EMBEDDED);

        renderer.setDocumentFromString(htmlStr);
        renderer.layout();
        renderer.createPDF(outputStream);
        renderer.finishPDF();
    }

HTML模板

applying_for_volunteer_service_form_html.html

资源

字体

src/main/resources/fonts/simhei.ttf

源码地址

https://gitee.com/cocoxike/pdfdemo.git

效果图

问题

1.中文显示

方法中加入字体

        // 设置中文字体
        ITextFontResolver fontResolver = renderer.getFontResolver();
        fontResolver.addFont(FONT_SIMHEI, BaseFont.IDENTITY_H, BaseFont.NOT_EMBEDDED);

在html模板中需要中文的位置style增加字体设置

        td {
            font-family: SimHei;
            height: 30px;
            padding-left: 5px;
            border: 1px solid #000;
            border-collapse: collapse;
        }
        .table_style {
            font-family: SimHei;
            border: 1px solid #000;
            border-collapse: collapse;
            width: 650px;
        }

2.复选框checkbox显示并只读

<input type="checkbox" readonly="readonly" style="margin: auto" th:name="${yesConfirm}"th:checked="${yesConfirm}"/>是

3.页脚

       @page {
            @bottom-center {
                margin-top: 1.5in;
                content: element(bottom-center);
                color:black;
            };
        }
        .bottom-center {
            margin-top: 0.1cm;
            display: block;
            width: 650px;
            margin-left: 33px;
            position: running(bottom-center);
            border-top: 1px solid black;
        }


<footer class="bottom-center">
   <div style="float:left;font-size: 13px" th:text="${requestMessage.school}">学校名</div>
   <div style="float:right;font-size: 13px">xxx学校xx专业xxx志愿服务申请书 2023v1.0</div>
</footer>

4.水平线

<hr class="other_line" align="center"/>

5.图片使用base64格式（网上很多可以在线转换的）

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