个人开发学习

参考一、使用iText填充PDF模板（适用于表单式PDF）
依赖配置（pom.xml）：

XML

com.itextpdf
itextpdf
5.5.13


com.itextpdf
itext-asian
5.2.0

代码示例：

Java
public void exportPdf(HttpServletResponse response) throws Exception {
String templatePath = "template.pdf"; // 模板路径
String outputFileName = "output.pdf";

// 设置响应头
response.setContentType("application/pdf");
response.setHeader("Content-Disposition", "attachment; filename=" + URLEncoder.encode(outputFileName, "UTF-8"));

PdfReader reader = new PdfReader(templatePath);
ByteArrayOutputStream bos = new ByteArrayOutputStream();
PdfStamper stamper = new PdfStamper(reader, bos);
AcroFields form = stamper.getAcroFields();

// 设置中文字体（解决中文乱码）
BaseFont bf = BaseFont.createFont("STSong-Light", "UniGB-UCS2-H", BaseFont.EMBEDDED);
form.addSubstitutionFont(bf);

// 填充数据
form.setField("name", "张三");
form.setField("date", "2024-04-17");

stamper.setFormFlattening(true); // 锁定表单
stamper.close();
reader.close();

// 输出到浏览器
OutputStream out = response.getOutputStream();
bos.writeTo(out);
out.flush();

}
参考二、动态生成PDF内容（适用于自由排版）
代码示例：

Java
public void createPdf(HttpServletResponse response) throws Exception {
Document document = new Document(PageSize.A4);
ByteArrayOutputStream baos = new ByteArrayOutputStream();
PdfWriter.getInstance(document, baos);

document.open();

// 设置中文字体
BaseFont bf = BaseFont.createFont("STSong-Light", "UniGB-UCS2-H", BaseFont.EMBEDDED);
Font font = new Font(bf, 12);

// 添加标题
Paragraph title = new Paragraph("动态生成的PDF", new Font(bf, 18, Font.BOLD));
title.setAlignment(Element.ALIGN_CENTER);
document.add(title);

// 添加表格
PdfPTable table = new PdfPTable(3);
table.addCell(new PdfPCell(new Phrase("姓名", font)));
table.addCell(new PdfPCell(new Phrase("年龄", font)));
table.addCell(new PdfPCell(new Phrase("职业", font)));
table.addCell("张三");
table.addCell("30");
table.addCell("工程师");

document.add(table);
document.close();

// 输出到浏览器
response.setContentType("application/pdf");
response.setHeader("Content-Disposition", "attachment; filename=dynamic.pdf");
baos.writeTo(response.getOutputStream());

}主要问题还是在于中文的学习