pom坐标
xml
<!-- https://mvnrepository.com/artifact/com.itextpdf/itextpdf -->
<dependency>
<groupId>com.itextpdf</groupId>
<artifactId>itextpdf</artifactId>
<version>5.5.13.3</version>
</dependency>字体文件可以再电脑系统中复制
java
public class CreatePdfWithIText {
public static void main(String[] args) {
String dest = "example.pdf";
// 创建 File 对象
File file = new File(dest);
try {
// 注册字体
BaseFont baseFont = BaseFont.createFont("src/main/resources/static/STFANGSO.TTF", BaseFont.IDENTITY_H, BaseFont.NOT_EMBEDDED);
Font font = new Font(baseFont, 12, Font.NORMAL);
// 创建输出流
FileOutputStream fileOutputStream = new FileOutputStream(file);
// 创建 Document 对象
Document pdf = new Document();
// 创建 PdfWriter 对象
PdfWriter writer = PdfWriter.getInstance(pdf, fileOutputStream);
// 添加页面事件监听器（例如，添加页眉和页脚）
writer.setPageEvent(new HeaderFooterPageEvent());
// 打开文档
pdf.open();
// 添加标题
pdf.add(new Paragraph(" 测试1111",font));
// 添加段落
pdf.add(new Paragraph("This is an example of a PDF document created using iText."));
pdf.add(new Paragraph(" "));
// 添加表格
PdfPTable table = new PdfPTable(3);
PdfPCell cell = new PdfPCell(new Paragraph("Header 1",font));
table.addCell(cell);
table.addCell("Header 2");
table.addCell("Header 3");
table.addCell("Row 1, Cell 1");
table.addCell("Row 1, Cell 2");
table.addCell("Row 1, Cell 3");
// 合并单元格
PdfPCell mergedCell = new PdfPCell(new Paragraph("Merged Cell"));
mergedCell.setCellEvent(new GradientBackgroundEvent(mergedCell,BaseColor.BLUE, BaseColor.WHITE,writer));
mergedCell.setColspan(2); // 合并两列
mergedCell.setHorizontalAlignment(Element.ALIGN_CENTER);//内容居中
table.addCell(mergedCell);
table.addCell(new PdfPCell(new Paragraph("测试数据23车上",font)));
table.completeRow();
pdf.add(table);
// 添加带下划线的文字
Chunk underlinedChunk = new Chunk("测试数据.",font);
underlinedChunk.setUnderline(0.1f, -2f); // 设置下划线的粗细和位置
Phrase underlinedPhrase = new Phrase(underlinedChunk);
pdf.add(new Paragraph(underlinedPhrase));
// 添加书签
PdfOutline root = writer.getRootOutline();
PdfOutline bookmark1 = new PdfOutline(root, new PdfDestination(PdfDestination.FITH, pdf.getPageSize().getTop(pdf.getPageSize().getHeight() - 72)), "Title 1");
PdfOutline bookmark2 = new PdfOutline(bookmark1, new PdfDestination(PdfDestination.FITH, pdf.getPageSize().getTop(pdf.getPageSize().getHeight() - 144)), "Sub-title 1.1");
// 插入图片
Image image = Image.getInstance("src/main/resources/static/lQLPJx8kenVARDfNBfrNC0CwMrMiu82UNQUG_l2o6frWAA_2880_1530.png");
image.scaleToFit(100, 100); // 设置图片大小
image.setAbsolutePosition(50, 750); // 设置图片位置 (x, y)
// 设置透明度
PdfContentByte canvas = writer.getDirectContent();
PdfGState gState = new PdfGState();
gState.setFillOpacity(0.5f); // 设置透明度，0.0f 完全透明，1.0f 完全不透明
canvas.setGState(gState);
canvas.addImage(image);
pdf.add(image);
// 关闭文档
pdf.close();
System.out.println("PDF created successfully.");
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (DocumentException e) {
throw new RuntimeException(e);
} catch (IOException e) {
throw new RuntimeException(e);
}
}
// 自定义页面事件监听器
static class HeaderFooterPageEvent extends PdfPageEventHelper {
@Override
public void onEndPage(PdfWriter writer, Document document) {
PdfContentByte cb = writer.getDirectContent();
cb.beginText();
try {
cb.setFontAndSize(BaseFont.createFont(BaseFont.HELVETICA, BaseFont.WINANSI, BaseFont.NOT_EMBEDDED), 12);
} catch (DocumentException e) {
throw new RuntimeException(e);
} catch (IOException e) {
throw new RuntimeException(e);
}
cb.showTextAligned(PdfContentByte.ALIGN_CENTER, "Header", document.right()/2 , document.top() + 10, 0);
cb.showTextAligned(PdfContentByte.ALIGN_CENTER, "Footer", document.right()/2, document.bottom() - 10, 0);
cb.endText();
}
}
// 自定义渐变色背景事件
static class GradientBackgroundEvent implements PdfPCellEvent {
private BaseColor startColor;
private BaseColor endColor;
private PdfWriter writer;
private PdfPCell rectangleItem;
public GradientBackgroundEvent(PdfPCell rectangleItem,BaseColor startColor, BaseColor endColor, PdfWriter writer) {
this.startColor = startColor;
this.endColor = endColor;
this.writer = writer;
this.rectangleItem = rectangleItem;
}
@Override
public void cellLayout(PdfPCell cell, Rectangle position, PdfContentByte[] canvases) {
PdfShading shading = PdfShading.simpleAxial(
this.writer,
position.getLeft(), position.getBottom(),
position.getRight(), position.getTop(),
startColor, endColor
);
PdfShadingPattern pattern = new PdfShadingPattern(shading);
PdfGState gstate = new PdfGState();
gstate.setFillOpacity(0.5f);//不透明度
canvases[PdfPTable.BACKGROUNDCANVAS].saveState();
canvases[PdfPTable.BACKGROUNDCANVAS].setGState(gstate);
canvases[PdfPTable.BACKGROUNDCANVAS].setShadingFill(pattern);//命中单元格，仅填充单元格填充
// canvases[PdfPTable.BACKGROUNDCANVAS].paintShading(pattern);//整个文档的填充
// canvases[PdfPTable.BACKGROUNDCANVAS].setShadingStroke(pattern);// 颜色灰色，仅单元格填充
canvases[PdfPTable.BACKGROUNDCANVAS].rectangle(position.getLeft(), position.getBottom(), position.getWidth(), position.getHeight());
canvases[PdfPTable.BACKGROUNDCANVAS].fill();
canvases[PdfPTable.BACKGROUNDCANVAS].restoreState();
}
}
}