java实现PDF模板替换

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		<dependency>
			<groupId>com.itextpdf</groupId>
			<artifactId>itextpdf</artifactId>
			<version>5.5.10</version>
		</dependency>

		<dependency>
			<groupId>com.itextpdf</groupId>
			<artifactId>font-asian</artifactId>
			<version>7.1.2</version>
			<scope>test</scope>
		</dependency>

		<dependency>
			<groupId>com.itextpdf</groupId>
			<artifactId>itext-asian</artifactId>
			<version>5.2.0</version>
		</dependency>

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    public void createPdf(){
        String templatePath = "G:\car.pdf";
        // 生成的新文件路径
        String newPDFPath = "G:\carNew.pdf";
        PdfReader reader;
        FileOutputStream out;
        ByteArrayOutputStream bos;
        PdfStamper stamper;
        try {
            out = new FileOutputStream(newPDFPath);// 输出流
            reader = new PdfReader(templatePath);// 读取pdf模板
            bos = new ByteArrayOutputStream();
            stamper = new PdfStamper(reader, bos);
            AcroFields form = stamper.getAcroFields();

            form.setField("username","牵引江");
            form.setField("address","阿猫阿狗");
            form.setField("Year","2020");
            form.setField("month","07");
            form.setField("day","16");

            stamper.setFormFlattening(true);// 如果为false那么生成的PDF文件还能编辑，一定要设为true
            stamper.close();

            Document doc = new Document();
            PdfCopy copy = new PdfCopy(doc, out);
            doc.open();
            PdfImportedPage importPage = copy.getImportedPage(new PdfReader(bos.toByteArray()), 1);
            copy.addPage(importPage);
            doc.close();

        } catch (IOException e) {
            System.out.println(1);
        } catch (DocumentException e) {
            System.out.println(2);
        }