1.导包
java
<dependency>
<groupId>com.itextpdf</groupId>
<artifactId>itextpdf</artifactId>
<version>5.5.10</version>
</dependency>
<dependency>
<groupId>com.itextpdf</groupId>
<artifactId>itext-asian</artifactId>
<version>5.2.0</version>
</dependency>
<dependency>
<groupId>commons-io</groupId>
<artifactId>commons-io</artifactId>
<version>2.11.0</version>
</dependency>2.绘制pdf模板
3.示例代码
java
/**
* 读取pdf模板填充生成pdf文件并转为字节数组
* @return
*/
public byte[] createPdf() {
//获取源数据(一般从数据库查询，此处通过构造数据简化处理)
List<Plan> plans = this.getPlans();
final int size = plans.size();
//临时文件
final String outputFilePath = "D:/" + System.currentTimeMillis() + ".pdf";
OutputStream os = null;
PdfStamper ps = null;
PdfReader reader = null;
PdfReader reader2 = null;
Document document = null;
ByteArrayOutputStream byteArrayOutputStream = null;
PdfCopy pdfNew = null;
try {
//读入pdf表单
reader = new PdfReader(this.getClass().getResourceAsStream("/template/test.pdf"));
//根据表单生成一个新的pdf
os = Files.newOutputStream(new File(outputFilePath).toPath());
ps = new PdfStamper(reader, os);
//获取pdf表
AcroFields form = ps.getAcroFields();
form.setField("contractNo", "HT2024042501");//合同号
form.setField("paymentDate", "2022-12-01");//放款日期
form.setField("expiredDate", "2023-12-01");//到期日期
ps.setFormFlattening(true);
List<AcroFields.FieldPosition> table = form.getFieldPositions("table");
Rectangle rect = table.get(0).position;
PdfPTable pTable = new PdfPTable(8);
BaseFont bfChinese = BaseFont.createFont("STSong-Light", "UniGB-UCS2-H", false);
Font fontZH = new Font(bfChinese, 10f, 0);
pTable.getDefaultCell().setHorizontalAlignment(1);
pTable.setWidthPercentage(100.0f);
float totalWidth = rect.getRight() - rect.getLeft() - 1;
//计算表格宽度
float[] columnWidth = {(float) (totalWidth * 0.05), (float) (totalWidth * 0.15), (float) (totalWidth * 0.15), (float) (totalWidth * 0.15), (float) (totalWidth * 0.15), (float) (totalWidth * 0.13), (float) (totalWidth * 0.13), (float) (totalWidth * 0.09)};
pTable.setTotalWidth(columnWidth);
pTable.setLockedWidth(true);
for (Plan plan : plans) {
Integer periodNo = plan.getPeriodNo();
int border = (periodNo % 12 == 0 || periodNo == size) ? Rectangle.BOTTOM : Rectangle.NO_BORDER;
pTable.addCell(generateCell(String.valueOf(periodNo), border, fontZH));
pTable.addCell(generateCell(plan.getMatchDate(), border, fontZH));
pTable.addCell(generateCell(plan.getRepayOriginal(), border, fontZH));
pTable.addCell(generateCell(plan.getPenalty(), border, fontZH));
pTable.addCell(generateCell(plan.getRepayAmount(), border, fontZH));
pTable.addCell(generateCell(plan.getRestOriginal(), border, fontZH));
pTable.addCell(generateCell(plan.getRepayDate(), border, fontZH));
pTable.addCell(generateCell(plan.getRepayStatus(), border, fontZH));
}
pTable.setKeepTogether(true);
pTable.setSplitLate(false);
pTable.setSplitRows(true);
//计算需要分页的总页数
int totalpage = size % 12 == 0 ? size / 12 : size / 12 + 1;
if (totalpage == 1) {
//获table页面
PdfContentByte under = ps.getOverContent(1);
//添加table
pTable.writeSelectedRows(0, -1, rect.getLeft(), rect.getTop(), under);
} else {
for (int i = 1; i <= totalpage; i++) {
PdfContentByte under = ps.getOverContent(i);
if (i == 1) {
pTable.writeSelectedRows(0, 12, rect.getLeft(), rect.getTop(), under);
} else {
pTable.writeSelectedRows((i - 1) * 12, i * 12, rect.getLeft(), rect.getTop(), under);
}
}
}
ps.close();
reader2 = new PdfReader(outputFilePath);
document = new Document(reader2.getPageSizeWithRotation(1));
byteArrayOutputStream = new ByteArrayOutputStream();
pdfNew = new PdfCopy(document, byteArrayOutputStream);
document.open();
PdfImportedPage page;
for (int i = 1; i <= totalpage; i++) {
page = pdfNew.getImportedPage(reader2, i);
pdfNew.addPage(page);
}
document.close();
os.close();
pdfNew.close();
reader.close();
reader2.close();
FileUtils.delete(new File(outputFilePath));
return byteArrayOutputStream.toByteArray();
} catch (Exception e) {
e.printStackTrace();
} finally {
try {
if (ps != null) {
ps.close();
}
if (reader != null) {
reader.close();
}
if (os != null) {
os.close();
}
if (document != null) {
document.close();
}
if (pdfNew != null) {
pdfNew.close();
}
if (reader2 != null) {
reader2.close();
}
if (byteArrayOutputStream != null) {
byteArrayOutputStream.close();
}
} catch (Exception e) {
e.printStackTrace();
}
}
return null;
}
private List<Plan> getPlans() {
List<Plan> plans = new ArrayList<Plan>();
for(int i=1;i<=12;i++) {
plans.add(new Plan(i,"2023-"+String.format("%02d", i)+"-01","999","-", "999","0","2023-"+String.format("%02d", i)+"-01", "已结清"));
}
return plans;
}
private PdfPCell generateCell(String value, int border, Font fontZH) {
PdfPCell cell = new PdfPCell(new Phrase(value, fontZH));
cell.setBorder(border);
cell.setHorizontalAlignment(Element.ALIGN_CENTER);
return cell;
}
public static void main(String [] args) throws FileNotFoundException, IOException {
//将字节流转为pdf文件放于D盘
OutputStream fileOut = new FileOutputStream("D:/a.pdf");
fileOut.write(new TestPdf().createPdf());
}4.执行结果
5.所用到jar包下载地址 ：
itextpdf-5.5.10.jar
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