Java实现PDF模板动态赋值与文档生成的多种方式

<dependency>
    <groupId>org.apache.pdfbox</groupId>
    <artifactId>pdfbox</artifactId>
    <version>3.0.0</version>
</dependency>

import org.apache.pdfbox.pdmodel.PDDocument;
import org.apache.pdfbox.pdmodel.PDPage;
import org.apache.pdfbox.pdmodel.interactive.form.PDAcroForm;
import org.apache.pdfbox.pdmodel.interactive.form.PDField;

import java.io.File;
import java.io.IOException;
import java.util.HashMap;
import java.util.Map;

public class PdfBoxTemplateGenerator {

    public static void main(String[] args) {
        String templatePath = "template.pdf";
        String outputPath = "output.pdf";
        Map<String, String> values = new HashMap<>();
        values.put("name", "李四");
        values.put("age", "30");

        try {
            generatePdfFromTemplate(templatePath, outputPath, values);
            System.out.println("PDF 文档生成成功，路径为: " + outputPath);
        } catch (IOException e) {
            System.err.println("生成 PDF 文档时出现错误: " + e.getMessage());
            e.printStackTrace();
        }
    }

    public static void generatePdfFromTemplate(String templatePath, String outputPath, Map<String, String> values) throws IOException {
        // 加载 PDF 模板文档
        try (PDDocument document = PDDocument.load(new File(templatePath))) {
            // 获取文档中的表单
            PDAcroForm acroForm = document.getDocumentCatalog().getAcroForm();
            if (acroForm != null) {
                // 遍历动态赋值的键值对
                for (Map.Entry<String, String> entry : values.entrySet()) {
                    // 获取表单字段
                    PDField field = acroForm.getField(entry.getKey());
                    if (field != null) {
                        // 设置字段的值
                        field.setValue(entry.getValue());
                    }
                }
            }

            // 保存修改后的文档
            document.save(outputPath);
        }
    }
}

<dependency>
    <groupId>org.xhtmlrenderer</groupId>
    <artifactId>flying-saucer-pdf-itext5</artifactId>
    <version>9.1.22</version>
</dependency>

import org.xhtmlrenderer.pdf.ITextRenderer;

import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.nio.file.Files;
import java.nio.file.Paths;
import java.util.HashMap;
import java.util.Map;

public class FlyingSaucerTemplateGenerator {

    public static void main(String[] args) {
        String templatePath = "template.html";
        String outputPath = "output.pdf";
        Map<String, String> values = new HashMap<>();
        values.put("${name}", "王五");
        values.put("${age}", "35");

        try {
            generatePdfFromTemplate(templatePath, outputPath, values);
            System.out.println("PDF 文档生成成功，路径为: " + outputPath);
        } catch (Exception e) {
            System.err.println("生成 PDF 文档时出现错误: " + e.getMessage());
            e.printStackTrace();
        }
    }

    public static void generatePdfFromTemplate(String templatePath, String outputPath, Map<String, String> values) throws Exception {
        // 读取 HTML 模板文件内容
        String htmlContent = new String(Files.readAllBytes(Paths.get(templatePath)));

        // 替换 HTML 中的占位符
        for (Map.Entry<String, String> entry : values.entrySet()) {
            htmlContent = htmlContent.replace(entry.getKey(), entry.getValue());
        }

        // 创建输出流
        try (OutputStream outputStream = new FileOutputStream(new File(outputPath))) {
            // 创建 ITextRenderer 对象
            ITextRenderer renderer = new ITextRenderer();
            // 设置 HTML 内容
            renderer.setDocumentFromString(htmlContent);
            // 布局渲染
            renderer.layout();
            // 生成 PDF
            renderer.createPDF(outputStream);
        }
    }
}