Java操作PDF之iText入门

时间:2021-08-10 22:19:35
转载自:http://www.cnblogs.com/liaojie970/p/7132475.html

iText是著名的开放项目,是用于生成PDF文档的一个java类库。通过iText不仅可以生成PDF或rtf的文档,而且可以将XML、Html文件转化为PDF文件。 

http://itextpdf.com/ 
版本:itextpdf-5.2.1.jar 

1、生成一个PDF 

Java操作PDF之iText入门
//Step 1—Create a Document.  
Document document = new Document();
//Step 2—Get a PdfWriter instance.
PdfWriter.getInstance(document, new FileOutputStream(FILE_DIR + "createSamplePDF.pdf"));
//Step 3—Open the Document.
document.open();
//Step 4—Add content.
document.add(new Paragraph("Hello World"));
//Step 5—Close the Document.
document.close();
Java操作PDF之iText入门

2、页面大小,页面背景色,页边空白,Title,Author,Subject,Keywords 

Java操作PDF之iText入门
//页面大小  
Rectangle rect = new Rectangle(PageSize.B5.rotate());
//页面背景色
rect.setBackgroundColor(BaseColor.ORANGE);

Document doc
= new Document(rect);

PdfWriter writer
= PdfWriter.getInstance(doc, out);

//PDF版本(默认1.4)
writer.setPdfVersion(PdfWriter.PDF_VERSION_1_2);

//文档属性
doc.addTitle("Title@sample");
doc.addAuthor(
"Author@rensanning");
doc.addSubject(
"Subject@iText sample");
doc.addKeywords(
"Keywords@iText");
doc.addCreator(
"Creator@iText");

//页边空白
doc.setMargins(10, 20, 30, 40);

doc.open();
doc.add(
new Paragraph("Hello World"));
Java操作PDF之iText入门

 

3、设置密码 

Java操作PDF之iText入门
PdfWriter writer = PdfWriter.getInstance(doc, out);  

// 设置密码为:"World"
writer.setEncryption("Hello".getBytes(), "World".getBytes(),
PdfWriter.ALLOW_SCREENREADERS,
PdfWriter.STANDARD_ENCRYPTION_128);

doc.open();
doc.add(
new Paragraph("Hello World"));
Java操作PDF之iText入门

 

4、添加Page 

Java操作PDF之iText入门
document.open();  
document.add(
new Paragraph("First page"));
document.add(
new Paragraph(Document.getVersion()));

document.newPage();
writer.setPageEmpty(
false);

document.newPage();
document.add(
new Paragraph("New page"));
Java操作PDF之iText入门

5、添加水印(背景图) 

Java操作PDF之iText入门
//图片水印  
PdfReader reader = new PdfReader(FILE_DIR + "setWatermark.pdf");
PdfStamper stamp
= new PdfStamper(reader, new FileOutputStream(FILE_DIR
+ "setWatermark2.pdf"));

Image img
= Image.getInstance("resource/watermark.jpg");
img.setAbsolutePosition(
200, 400);
PdfContentByte under
= stamp.getUnderContent(1);
under.addImage(img);

//文字水印
PdfContentByte over = stamp.getOverContent(2);
over.beginText();
BaseFont bf
= BaseFont.createFont(BaseFont.HELVETICA, BaseFont.WINANSI,
BaseFont.EMBEDDED);
over.setFontAndSize(bf,
18);
over.setTextMatrix(
30, 30);
over.showTextAligned(Element.ALIGN_LEFT,
"DUPLICATE", 230, 430, 45);
over.endText();

//背景图
Image img2 = Image.getInstance("resource/test.jpg");
img2.setAbsolutePosition(
0, 0);
PdfContentByte under2
= stamp.getUnderContent(3);
under2.addImage(img2);

stamp.close();
reader.close();
Java操作PDF之iText入门

6、插入Chunk, Phrase, Paragraph, List 

Java操作PDF之iText入门
//Chunk对象: a String, a Font, and some attributes  
document.add(new Chunk("China"));
document.add(
new Chunk(" "));
Font font
= new Font(Font.FontFamily.HELVETICA, 6, Font.BOLD, BaseColor.WHITE);
Chunk id
= new Chunk("chinese", font);
id.setBackground(BaseColor.BLACK, 1f,
0.5f, 1f, 1.5f);
id.setTextRise(
6);
document.add(id);
document.add(Chunk.NEWLINE);

document.add(
new Chunk("Japan"));
document.add(
new Chunk(" "));
Font font2
= new Font(Font.FontFamily.HELVETICA, 6, Font.BOLD, BaseColor.WHITE);
Chunk id2
= new Chunk("japanese", font2);
id2.setBackground(BaseColor.BLACK, 1f,
0.5f, 1f, 1.5f);
id2.setTextRise(
6);
id2.setUnderline(
0.2f, -2f);
document.add(id2);
document.add(Chunk.NEWLINE);

//Phrase对象: a List of Chunks with leading
document.newPage();
document.add(
new Phrase("Phrase page"));

Phrase director
= new Phrase();
Chunk name
= new Chunk("China");
name.setUnderline(
0.2f, -2f);
director.add(name);
director.add(
new Chunk(","));
director.add(
new Chunk(" "));
director.add(
new Chunk("chinese"));
director.setLeading(
24);
document.add(director);

Phrase director2
= new Phrase();
Chunk name2
= new Chunk("Japan");
name2.setUnderline(
0.2f, -2f);
director2.add(name2);
director2.add(
new Chunk(","));
director2.add(
new Chunk(" "));
director2.add(
new Chunk("japanese"));
director2.setLeading(
24);
document.add(director2);

//Paragraph对象: a Phrase with extra properties and a newline
document.newPage();
document.add(
new Paragraph("Paragraph page"));

Paragraph info
= new Paragraph();
info.add(
new Chunk("China "));
info.add(
new Chunk("chinese"));
info.add(Chunk.NEWLINE);
info.add(
new Phrase("Japan "));
info.add(
new Phrase("japanese"));
document.add(info);

//List对象: a sequence of Paragraphs called ListItem
document.newPage();
List list
= new List(List.ORDERED);
for (int i = 0; i < 10; i++) {
ListItem item
= new ListItem(String.format("%s: %d movies",
"country" + (i + 1), (i + 1) * 100), new Font(
Font.FontFamily.HELVETICA,
6, Font.BOLD, BaseColor.WHITE));
List movielist
= new List(List.ORDERED, List.ALPHABETICAL);
movielist.setLowercase(List.LOWERCASE);
for (int j = 0; j < 5; j++) {
ListItem movieitem
= new ListItem("Title" + (j + 1));
List directorlist
= new List(List.UNORDERED);
for (int k = 0; k < 3; k++) {
directorlist.add(String.format(
"%s, %s", "Name1" + (k + 1),
"Name2" + (k + 1)));
}
movieitem.add(directorlist);
movielist.add(movieitem);
}
item.add(movielist);
list.add(item);
}
document.add(list);
Java操作PDF之iText入门

7、插入Anchor, Image, Chapter, Section 

Java操作PDF之iText入门
//Anchor对象: internal and external links  
Paragraph country = new Paragraph();
Anchor dest
= new Anchor("china", new Font(Font.FontFamily.HELVETICA, 14, Font.BOLD, BaseColor.BLUE));
dest.setName(
"CN");
dest.setReference(
"http://www.china.com");//external
country.add(dest);
country.add(String.format(
": %d sites", 10000));
document.add(country);

document.newPage();
Anchor toUS
= new Anchor("Go to first page.", new Font(Font.FontFamily.HELVETICA, 14, Font.BOLD, BaseColor.BLUE));
toUS.setReference(
"#CN");//internal
document.add(toUS);

//Image对象
document.newPage();
Image img
= Image.getInstance("resource/test.jpg");
img.setAlignment(Image.LEFT
| Image.TEXTWRAP);
img.setBorder(Image.BOX);
img.setBorderWidth(
10);
img.setBorderColor(BaseColor.WHITE);
img.scaleToFit(
1000, 72);//大小
img.setRotationDegrees(-30);//旋转
document.add(img);

//Chapter, Section对象(目录)
document.newPage();
Paragraph title
= new Paragraph("Title");
Chapter chapter
= new Chapter(title, 1);

title
= new Paragraph("Section A");
Section section
= chapter.addSection(title);
section.setBookmarkTitle(
"bmk");
section.setIndentation(
30);
section.setBookmarkOpen(
false);
section.setNumberStyle(
Section.NUMBERSTYLE_DOTTED_WITHOUT_FINAL_DOT);

Section subsection
= section.addSection(new Paragraph("Sub Section A"));
subsection.setIndentationLeft(
20);
subsection.setNumberDepth(
1);

document.add(chapter);
Java操作PDF之iText入门

8、画图 

Java操作PDF之iText入门
//左右箭头  
document.add(new VerticalPositionMark() {

public void draw(PdfContentByte canvas, float llx, float lly,
float urx, float ury, float y) {
canvas.beginText();
BaseFont bf
= null;
try {
bf
= BaseFont.createFont(BaseFont.ZAPFDINGBATS, "", BaseFont.EMBEDDED);
}
catch (Exception e) {
e.printStackTrace();
}
canvas.setFontAndSize(bf,
12);

// LEFT
canvas.showTextAligned(Element.ALIGN_CENTER, String.valueOf((char) 220), llx - 10, y, 0);
// RIGHT
canvas.showTextAligned(Element.ALIGN_CENTER, String.valueOf((char) 220), urx + 10, y + 8, 180);

canvas.endText();
}
});

//直线
Paragraph p1 = new Paragraph("LEFT");
p1.add(
new Chunk(new LineSeparator()));
p1.add(
"R");
document.add(p1);
//点线
Paragraph p2 = new Paragraph("LEFT");
p2.add(
new Chunk(new DottedLineSeparator()));
p2.add(
"R");
document.add(p2);
//下滑线
LineSeparator UNDERLINE = new LineSeparator(1, 100, null, Element.ALIGN_CENTER, -2);
Paragraph p3
= new Paragraph("NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN");
p3.add(UNDERLINE);
document.add(p3);
Java操作PDF之iText入门

 

9、设置段落 

Java操作PDF之iText入门
Paragraph p = new Paragraph("In the previous example, you added a header and footer with the showTextAligned() method. This example demonstrates 
that it’s sometimes more interesting to use PdfPTable and writeSelectedRows(). You can define a bottom border for each cell so that the header is
underlined. This is the most elegant way to add headers and footers, because the table mechanism allows you to position and align lines, images,
and text.");

//默认
p.setAlignment(Element.ALIGN_JUSTIFIED);
document.add(p);

document.newPage();
p.setAlignment(Element.ALIGN_JUSTIFIED);
p.setIndentationLeft(
1 * 15f);
p.setIndentationRight((
5 - 1) * 15f);
document.add(p);

//居右
document.newPage();
p.setAlignment(Element.ALIGN_RIGHT);
p.setSpacingAfter(15f);
document.add(p);

//居左
document.newPage();
p.setAlignment(Element.ALIGN_LEFT);
p.setSpacingBefore(15f);
document.add(p);

//居中
document.newPage();
p.setAlignment(Element.ALIGN_CENTER);
p.setSpacingAfter(15f);
p.setSpacingBefore(15f);
document.add(p);
Java操作PDF之iText入门

10、删除Page 

Java操作PDF之iText入门
FileOutputStream out = new FileOutputStream(FILE_DIR + "deletePage.pdf");  

Document document
= new Document();

PdfWriter writer
= PdfWriter.getInstance(document, out);

document.open();
document.add(
new Paragraph("First page"));
document.add(
new Paragraph(Document.getVersion()));

document.newPage();
writer.setPageEmpty(
false);

document.newPage();
document.add(
new Paragraph("New page"));

document.close();

PdfReader reader
= new PdfReader(FILE_DIR + "deletePage.pdf");
reader.selectPages(
"1,3");
PdfStamper stamp
= new PdfStamper(reader, new FileOutputStream(FILE_DIR
+ "deletePage2.pdf"));
stamp.close();
reader.close();
Java操作PDF之iText入门

11、插入Page 

Java操作PDF之iText入门
FileOutputStream out = new FileOutputStream(FILE_DIR + "insertPage.pdf");  

Document document
= new Document();

PdfWriter.getInstance(document, out);

document.open();
document.add(
new Paragraph("1 page"));

document.newPage();
document.add(
new Paragraph("2 page"));

document.newPage();
document.add(
new Paragraph("3 page"));

document.close();

PdfReader reader
= new PdfReader(FILE_DIR + "insertPage.pdf");
PdfStamper stamp
= new PdfStamper(reader, new FileOutputStream(FILE_DIR
+ "insertPage2.pdf"));

stamp.insertPage(
2, reader.getPageSize(1));

ColumnText ct
= new ColumnText(null);
ct.addElement(
new Paragraph(24, new Chunk("INSERT PAGE")));
ct.setCanvas(stamp.getOverContent(
2));
ct.setSimpleColumn(
36, 36, 559, 770);

stamp.close();
reader.close();
Java操作PDF之iText入门

12、排序page 

Java操作PDF之iText入门
PdfWriter writer = PdfWriter.getInstance(doc, out);  
writer.setLinearPageMode();

doc.open();
doc.add(
new Paragraph("1 page"));
doc.newPage();
doc.add(
new Paragraph("2 page"));
doc.newPage();
doc.add(
new Paragraph("3 page"));
doc.newPage();
doc.add(
new Paragraph("4 page"));
doc.newPage();
doc.add(
new Paragraph("5 page"));

int[] order = {4,3,2,1};
writer.reorderPages(order);
Java操作PDF之iText入门

13、目录 

Java操作PDF之iText入门
// Code 1  
document.add(new Chunk("Chapter 1").setLocalDestination("1"));

document.newPage();
document.add(
new Chunk("Chapter 2").setLocalDestination("2"));
document.add(
new Paragraph(new Chunk("Sub 2.1").setLocalDestination("2.1")));
document.add(
new Paragraph(new Chunk("Sub 2.2").setLocalDestination("2.2")));

document.newPage();
document.add(
new Chunk("Chapter 3").setLocalDestination("3"));

// Code 2
PdfContentByte cb = writer.getDirectContent();
PdfOutline root
= cb.getRootOutline();

// Code 3
@SuppressWarnings("unused")
PdfOutline oline1
= new PdfOutline(root, PdfAction.gotoLocalPage("1", false), "Chapter 1");

PdfOutline oline2
= new PdfOutline(root, PdfAction.gotoLocalPage("2", false), "Chapter 2");
oline2.setOpen(
false);

@SuppressWarnings(
"unused")
PdfOutline oline2_1
= new PdfOutline(oline2, PdfAction.gotoLocalPage("2.1", false), "Sub 2.1");
@SuppressWarnings(
"unused")
PdfOutline oline2_2
= new PdfOutline(oline2, PdfAction.gotoLocalPage("2.2", false), "Sub 2.2");

@SuppressWarnings(
"unused")
PdfOutline oline3
= new PdfOutline(root, PdfAction.gotoLocalPage("3", false), "Chapter 3");
Java操作PDF之iText入门

 

14、Header, Footer 

Java操作PDF之iText入门
PdfWriter writer = PdfWriter.getInstance(doc, new FileOutputStream(FILE_DIR + "setHeaderFooter.pdf"));  

writer.setPageEvent(
new PdfPageEventHelper() {

public void onEndPage(PdfWriter writer, Document document) {

PdfContentByte cb
= writer.getDirectContent();
cb.saveState();

cb.beginText();
BaseFont bf
= null;
try {
bf
= BaseFont.createFont(BaseFont.HELVETICA, BaseFont.WINANSI, BaseFont.EMBEDDED);
}
catch (Exception e) {
e.printStackTrace();
}
cb.setFontAndSize(bf,
10);

//Header
float x = document.top(-20);

//
cb.showTextAligned(PdfContentByte.ALIGN_LEFT,
"H-Left",
document.left(), x,
0);
//
cb.showTextAligned(PdfContentByte.ALIGN_CENTER,
writer.getPageNumber()
+ " page",
(document.right()
+ document.left())/2,
x,
0);
//
cb.showTextAligned(PdfContentByte.ALIGN_RIGHT,
"H-Right",
document.right(), x,
0);

//Footer
float y = document.bottom(-20);

//
cb.showTextAligned(PdfContentByte.ALIGN_LEFT,
"F-Left",
document.left(), y,
0);
//
cb.showTextAligned(PdfContentByte.ALIGN_CENTER,
writer.getPageNumber()
+" page",
(document.right()
+ document.left())/2,
y,
0);
//
cb.showTextAligned(PdfContentByte.ALIGN_RIGHT,
"F-Right",
document.right(), y,
0);

cb.endText();

cb.restoreState();
}
});

doc.open();
doc.add(
new Paragraph("1 page"));
doc.newPage();
doc.add(
new Paragraph("2 page"));
doc.newPage();
doc.add(
new Paragraph("3 page"));
doc.newPage();
doc.add(
new Paragraph("4 page"));
Java操作PDF之iText入门

15、左右文字 

Java操作PDF之iText入门
PdfWriter writer = PdfWriter.getInstance(document, out);  

document.open();

PdfContentByte canvas
= writer.getDirectContent();

Phrase phrase1
= new Phrase("This is a test!left");
Phrase phrase2
= new Phrase("This is a test!right");
Phrase phrase3
= new Phrase("This is a test!center");
ColumnText.showTextAligned(canvas, Element.ALIGN_LEFT, phrase1,
10, 500, 0);
ColumnText.showTextAligned(canvas, Element.ALIGN_RIGHT, phrase2,
10, 536, 0);
ColumnText.showTextAligned(canvas, Element.ALIGN_CENTER, phrase3,
10, 572, 0);
Java操作PDF之iText入门

16、幻灯片放映 

Java操作PDF之iText入门
PdfWriter writer = PdfWriter.getInstance(doc, out);  

writer.setPdfVersion(PdfWriter.VERSION_1_5);

writer.setViewerPreferences(PdfWriter.PageModeFullScreen);
//全屏
writer.setPageEvent(new PdfPageEventHelper() {
public void onStartPage(PdfWriter writer, Document document) {
writer.setTransition(
new PdfTransition(PdfTransition.DISSOLVE, 3));
writer.setDuration(
5);//间隔时间
}
});

doc.open();
doc.add(
new Paragraph("1 page"));
doc.newPage();
doc.add(
new Paragraph("2 page"));
doc.newPage();
doc.add(
new Paragraph("3 page"));
doc.newPage();
doc.add(
new Paragraph("4 page"));
doc.newPage();
doc.add(
new Paragraph("5 page"));
Java操作PDF之iText入门

17、压缩PDF到Zip 

Java操作PDF之iText入门
ZipOutputStream zip = new ZipOutputStream(new FileOutputStream(FILE_DIR + "zipPDF.zip"));  
for (int i = 1; i <= 3; i++) {
ZipEntry entry
= new ZipEntry("hello_" + i + ".pdf");
zip.putNextEntry(entry);
Document document
= new Document();
PdfWriter writer
= PdfWriter.getInstance(document, zip);
writer.setCloseStream(
false);
document.open();
document.add(
new Paragraph("Hello " + i));
document.close();
zip.closeEntry();
}
zip.close();
Java操作PDF之iText入门

 

18、分割PDF 

Java操作PDF之iText入门
FileOutputStream out = new FileOutputStream(FILE_DIR + "splitPDF.pdf");  

Document document
= new Document();

PdfWriter.getInstance(document, out);

document.open();
document.add(
new Paragraph("1 page"));

document.newPage();
document.add(
new Paragraph("2 page"));

document.newPage();
document.add(
new Paragraph("3 page"));

document.newPage();
document.add(
new Paragraph("4 page"));

document.close();

PdfReader reader
= new PdfReader(FILE_DIR + "splitPDF.pdf");

Document dd
= new Document();
PdfWriter writer
= PdfWriter.getInstance(dd, new FileOutputStream(FILE_DIR + "splitPDF1.pdf"));
dd.open();
PdfContentByte cb
= writer.getDirectContent();
dd.newPage();
cb.addTemplate(writer.getImportedPage(reader,
1), 0, 0);
dd.newPage();
cb.addTemplate(writer.getImportedPage(reader,
2), 0, 0);
dd.close();
writer.close();

Document dd2
= new Document();
PdfWriter writer2
= PdfWriter.getInstance(dd2, new FileOutputStream(FILE_DIR + "splitPDF2.pdf"));
dd2.open();
PdfContentByte cb2
= writer2.getDirectContent();
dd2.newPage();
cb2.addTemplate(writer2.getImportedPage(reader,
3), 0, 0);
dd2.newPage();
cb2.addTemplate(writer2.getImportedPage(reader,
4), 0, 0);
dd2.close();
writer2.close();
Java操作PDF之iText入门

19、合并PDF 

Java操作PDF之iText入门
PdfReader reader1 = new PdfReader(FILE_DIR + "splitPDF1.pdf");  
PdfReader reader2
= new PdfReader(FILE_DIR + "splitPDF2.pdf");

FileOutputStream out
= new FileOutputStream(FILE_DIR + "mergePDF.pdf");

Document document
= new Document();
PdfWriter writer
= PdfWriter.getInstance(document, out);

document.open();
PdfContentByte cb
= writer.getDirectContent();

int totalPages = 0;
totalPages
+= reader1.getNumberOfPages();
totalPages
+= reader2.getNumberOfPages();

java.util.List
<PdfReader> readers = new ArrayList<PdfReader>();
readers.add(reader1);
readers.add(reader2);

int pageOfCurrentReaderPDF = 0;
Iterator
<PdfReader> iteratorPDFReader = readers.iterator();

// Loop through the PDF files and add to the output.
while (iteratorPDFReader.hasNext()) {
PdfReader pdfReader
= iteratorPDFReader.next();

// Create a new page in the target for each source page.
while (pageOfCurrentReaderPDF < pdfReader.getNumberOfPages()) {
document.newPage();
pageOfCurrentReaderPDF
++;
PdfImportedPage page
= writer.getImportedPage(pdfReader, pageOfCurrentReaderPDF);
cb.addTemplate(page,
0, 0);
}
pageOfCurrentReaderPDF
= 0;
}
out.flush();
document.close();
out.close();
Java操作PDF之iText入门

20、Annotation 

Java操作PDF之iText入门
PdfWriter writer = PdfWriter.getInstance(doc, out);  
writer.setLinearPageMode();

doc.open();
doc.add(
new Paragraph("1 page"));
doc.add(
new Annotation("Title", "This is a annotation!"));

doc.newPage();
doc.add(
new Paragraph("2 page"));
Chunk chunk
= new Chunk("\u00a0");
chunk.setAnnotation(PdfAnnotation.createText(writer,
null, "Title", "This is a another annotation!", false, "Comment"));
doc.add(chunk);

//添加附件
doc.newPage();
doc.add(
new Paragraph("3 page"));
Chunk chunk2
= new Chunk("\u00a0\u00a0");
PdfAnnotation annotation
= PdfAnnotation.createFileAttachment(
writer,
null, "Title", null,
"resource/test2.jpg",
"img.jpg");
annotation.put(PdfName.NAME,
new PdfString("Paperclip"));
chunk2.setAnnotation(annotation);
doc.add(chunk2);
Java操作PDF之iText入门

 

21、插入一个Table 

Java操作PDF之iText入门
PdfPTable table = new PdfPTable(3);  
PdfPCell cell;
cell
= new PdfPCell(new Phrase("Cell with colspan 3"));
cell.setColspan(
3);
table.addCell(cell);
cell
= new PdfPCell(new Phrase("Cell with rowspan 2"));
cell.setRowspan(
2);
table.addCell(cell);
table.addCell(
"row 1; cell 1");
table.addCell(
"row 1; cell 2");
table.addCell(
"row 2; cell 1");
table.addCell(
"row 2; cell 2");

document.add(table);
Java操作PDF之iText入门

22、表格嵌套 

Java操作PDF之iText入门
PdfPTable table = new PdfPTable(4);  

//1行2列
PdfPTable nested1 = new PdfPTable(2);
nested1.addCell(
"1.1");
nested1.addCell(
"1.2");

//2行1列
PdfPTable nested2 = new PdfPTable(1);
nested2.addCell(
"2.1");
nested2.addCell(
"2.2");

//将表格插入到指定位置
for (int k = 0; k < 24; ++k) {
if (k == 1) {
table.addCell(nested1);
}
else if (k == 20) {
table.addCell(nested2);
}
else {
table.addCell(
"cell " + k);
}
}

document.add(table);
Java操作PDF之iText入门

23、设置表格宽度 

Java操作PDF之iText入门
PdfPTable table = new PdfPTable(3);  
PdfPCell cell;
cell
= new PdfPCell(new Phrase("Cell with colspan 3"));
cell.setColspan(
3);
table.addCell(cell);
cell
= new PdfPCell(new Phrase("Cell with rowspan 2"));
cell.setRowspan(
2);
table.addCell(cell);
table.addCell(
"row 1; cell 1");
table.addCell(
"row 1; cell 2");
table.addCell(
"row 2; cell 1");
table.addCell(
"row 2; cell 2");

//100%
table.setWidthPercentage(100);
document.add(table);
document.add(
new Paragraph("\n\n"));

//宽度50% 居左
table.setHorizontalAlignment(Element.ALIGN_LEFT);
document.add(table);
document.add(
new Paragraph("\n\n"));

//宽度50% 居中
table.setHorizontalAlignment(Element.ALIGN_CENTER);
document.add(table);
document.add(
new Paragraph("\n\n"));

//宽度50% 居右
table.setWidthPercentage(50);
table.setHorizontalAlignment(Element.ALIGN_RIGHT);
document.add(table);
document.add(
new Paragraph("\n\n"));

//固定宽度
table.setTotalWidth(300);
table.setLockedWidth(
true);
document.add(table);
Java操作PDF之iText入门

24、设置表格前后间隔 

Java操作PDF之iText入门
PdfPTable table = new PdfPTable(3);  
PdfPCell cell
= new PdfPCell(new Paragraph("合并3个单元格",fontZH));
cell.setColspan(
3);
table.addCell(cell);
table.addCell(
"1.1");
table.addCell(
"2.1");
table.addCell(
"3.1");
table.addCell(
"1.2");
table.addCell(
"2.2");
table.addCell(
"3.2");

cell
= new PdfPCell(new Paragraph("红色边框",fontZH));
cell.setBorderColor(
new BaseColor(255, 0, 0));
table.addCell(cell);

cell
= new PdfPCell(new Paragraph("合并单2个元格",fontZH));
cell.setColspan(
2);
cell.setBackgroundColor(
new BaseColor(0xC0, 0xC0, 0xC0));
table.addCell(cell);

table.setWidthPercentage(
50);

document.add(
new Paragraph("追加2个表格",fontZH));
document.add(table);
document.add(table);

document.newPage();
document.add(
new Paragraph("使用'SpacingBefore'和'setSpacingAfter'",fontZH));
table.setSpacingBefore(15f);
document.add(table);
document.add(table);
document.add(
new Paragraph("这里没有间隔",fontZH));
table.setSpacingAfter(15f);
Java操作PDF之iText入门

25、设置单元格宽度 

Java操作PDF之iText入门
//按比例设置单元格宽度  
float[] widths = {0.1f, 0.1f, 0.05f, 0.75f};
PdfPTable table
= new PdfPTable(widths);
table.addCell(
"10%");
table.addCell(
"10%");
table.addCell(
"5%");
table.addCell(
"75%");
table.addCell(
"aa");
table.addCell(
"aa");
table.addCell(
"a");
table.addCell(
"aaaaaaaaaaaaaaa");
table.addCell(
"bb");
table.addCell(
"bb");
table.addCell(
"b");
table.addCell(
"bbbbbbbbbbbbbbb");
table.addCell(
"cc");
table.addCell(
"cc");
table.addCell(
"c");
table.addCell(
"ccccccccccccccc");
document.add(table);
document.add(
new Paragraph("\n\n"));

//调整比例
widths[0] = 20f;
widths[
1] = 20f;
widths[
2] = 10f;
widths[
3] = 50f;
table.setWidths(widths);
document.add(table);

//按绝对值设置单元格宽度
widths[0] = 40f;
widths[
1] = 40f;
widths[
2] = 20f;
widths[
3] = 300f;
Rectangle r
= new Rectangle(PageSize.A4.getRight(72), PageSize.A4.getTop(72));
table.setWidthPercentage(widths, r);
document.add(
new Paragraph("\n\n"));
document.add(table);
Java操作PDF之iText入门

26、设置单元格高度 

Java操作PDF之iText入门
PdfPTable table = new PdfPTable(2);  

PdfPCell cell;

//折行
table.addCell(new PdfPCell(new Paragraph("折行", fontZH)));
cell
= new PdfPCell(new Paragraph("blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah"));
cell.setNoWrap(
false);
table.addCell(cell);

//不折行
table.addCell(new PdfPCell(new Paragraph("不折行", fontZH)));
cell.setNoWrap(
true);
table.addCell(cell);

//设置高度
table.addCell(new PdfPCell(new Paragraph("任意高度",fontZH)));
cell
= new PdfPCell(new Paragraph("1. blah blah\n2. blah blah blah\n3. blah blah\n4. blah blah blah\n5. blah blah\n6. blah blah blah\n7. blah blah\n8. blah blah blah"));
table.addCell(cell);

//固定高度
table.addCell(new PdfPCell(new Paragraph("固定高度",fontZH)));
cell.setFixedHeight(50f);
table.addCell(cell);

//最小高度
table.addCell(new PdfPCell(new Paragraph("最小高度",fontZH)));
cell
= new PdfPCell(new Paragraph("最小高度:50",fontZH));
cell.setMinimumHeight(50f);
table.addCell(cell);

//最后一行拉长到page底部
table.setExtendLastRow(true);
table.addCell(
new PdfPCell(new Paragraph("拉长最后一行",fontZH)));
cell
= new PdfPCell(new Paragraph("最后一行拉长到page底部",fontZH));
table.addCell(cell);

document.add(table);
Java操作PDF之iText入门

27、设置单元格颜色 

Java操作PDF之iText入门
PdfPTable table = new PdfPTable(4);  
PdfPCell cell;
cell
= new PdfPCell(new Paragraph("颜色测试",fontZH));
table.addCell(cell);

//红色背景,无边框
cell = new PdfPCell(new Paragraph("红色背景,无边框",fontZH));
cell.setBorder(Rectangle.NO_BORDER);
cell.setBackgroundColor(BaseColor.RED);
table.addCell(cell);

//绿色背景,下边框
cell = new PdfPCell(new Paragraph("绿色背景,下边框",fontZH));
cell.setBorder(Rectangle.BOTTOM);
cell.setBorderColorBottom(BaseColor.MAGENTA);
cell.setBorderWidthBottom(5f);
cell.setBackgroundColor(BaseColor.GREEN);
table.addCell(cell);

//蓝色背景,上边框
cell = new PdfPCell(new Paragraph("蓝色背景,上边框",fontZH));
cell.setBorder(Rectangle.TOP);
cell.setUseBorderPadding(
true);
cell.setBorderWidthTop(5f);
cell.setBorderColorTop(BaseColor.CYAN);
cell.setBackgroundColor(BaseColor.BLUE);
table.addCell(cell);

cell
= new PdfPCell(new Paragraph("背景灰色度",fontZH));
table.addCell(cell);
cell
= new PdfPCell(new Paragraph("0.25"));
cell.setBorder(Rectangle.NO_BORDER);
cell.setGrayFill(
0.25f);
table.addCell(cell);
cell
= new PdfPCell(new Paragraph("0.5"));
cell.setBorder(Rectangle.NO_BORDER);
cell.setGrayFill(
0.5f);
table.addCell(cell);
cell
= new PdfPCell(new Paragraph("0.75"));
cell.setBorder(Rectangle.NO_BORDER);
cell.setGrayFill(
0.75f);
table.addCell(cell);

document.add(table);
Java操作PDF之iText入门

28、插入图像 

Java操作PDF之iText入门
Image image = Image.getInstance("resource/test2.jpg");  
float[] widths = { 1f, 4f };

PdfPTable table
= new PdfPTable(widths);

//插入图片
table.addCell(new PdfPCell(new Paragraph("图片测试", fontZH)));
table.addCell(image);

//调整图片大小
table.addCell("This two");
table.addCell(
new PdfPCell(image, true));

//不调整
table.addCell("This three");
table.addCell(
new PdfPCell(image, false));
document.add(table);
Java操作PDF之iText入门

29、设置表头 

Java操作PDF之iText入门
String[] bogusData = { "M0065920", "SL", "FR86000P", "PCGOLD",  
"119000", "96 06", "2001-08-13", "4350", "6011648299",
"FLFLMTGP", "153", "119000.00" };
int NumColumns = 12;
// 12
PdfPTable datatable = new PdfPTable(NumColumns);
int headerwidths[] = { 9, 4, 8, 10, 8, 11, 9, 7, 9, 10, 4, 10 }; // percentage
datatable.setWidths(headerwidths);
datatable.setWidthPercentage(
100);
datatable.getDefaultCell().setPadding(
3);
datatable.getDefaultCell().setBorderWidth(
2);
datatable.getDefaultCell().setHorizontalAlignment(Element.ALIGN_CENTER);

datatable.addCell(
"Clock #");
datatable.addCell(
"Trans Type");
datatable.addCell(
"Cusip");
datatable.addCell(
"Long Name");
datatable.addCell(
"Quantity");
datatable.addCell(
"Fraction Price");
datatable.addCell(
"Settle Date");
datatable.addCell(
"Portfolio");
datatable.addCell(
"ADP Number");
datatable.addCell(
"Account ID");
datatable.addCell(
"Reg Rep ID");
datatable.addCell(
"Amt To Go ");

datatable.setHeaderRows(
1);

//边框
datatable.getDefaultCell().setBorderWidth(1);

//背景色
for (int i = 1; i < 1000; i++) {
for (int x = 0; x < NumColumns; x++) {
datatable.addCell(bogusData[x]);
}
}

document.add(datatable);
Java操作PDF之iText入门

30、分割表格 

Java操作PDF之iText入门
//横向分割  
PdfContentByte cb = writer.getDirectContent();
PdfPTable table
= new PdfPTable(10);
for (int k = 1; k <= 100; ++k) {
table.addCell(
"The number " + k);
}
table.setTotalWidth(
400);

table.writeSelectedRows(
0, 5, 0, -1, 5, 700, cb);
table.writeSelectedRows(
5, -1, 0, -1, 210, 700, cb);
Java操作PDF之iText入门

31、设置单元格留白 

Java操作PDF之iText入门
PdfPTable table = new PdfPTable(2);  
PdfPCell cell;
Paragraph p
= new Paragraph("Quick brown fox jumps over the lazy dog. Quick brown fox jumps over the lazy dog.");
table.addCell(
new PdfPCell(new Paragraph("默认",fontZH)));
table.addCell(p);
table.addCell(
new PdfPCell(new Paragraph("Padding:10",fontZH)));
cell
= new PdfPCell(p);
cell.setPadding(10f);
table.addCell(cell);
table.addCell(
new PdfPCell(new Paragraph("Padding:0",fontZH)));
cell
= new PdfPCell(p);
cell.setPadding(0f);
table.addCell(cell);
table.addCell(
new PdfPCell(new Paragraph("上Padding:0 左Padding:20",fontZH)));
cell
= new PdfPCell(p);
cell.setPaddingTop(0f);
cell.setPaddingLeft(20f);
table.addCell(cell);
document.add(table);

document.newPage();
table
= new PdfPTable(2);
table.addCell(
new PdfPCell(new Paragraph("没有Leading",fontZH)));
table.getDefaultCell().setLeading(0f, 0f);
table.addCell(
"blah blah\nblah blah blah\nblah blah\nblah blah blah\nblah blah\nblah blah blah\nblah blah\nblah blah blah\n");
table.getDefaultCell().setLeading(14f, 0f);
table.addCell(
new PdfPCell(new Paragraph("固定Leading:14pt",fontZH)));
table.addCell(
"blah blah\nblah blah blah\nblah blah\nblah blah blah\nblah blah\nblah blah blah\nblah blah\nblah blah blah\n");
table.addCell(
new PdfPCell(new Paragraph("相对于字体",fontZH)));
table.getDefaultCell().setLeading(0f,
1.0f);
table.addCell(
"blah blah\nblah blah blah\nblah blah\nblah blah blah\nblah blah\nblah blah blah\nblah blah\nblah blah blah\n");
document.add(table);
Java操作PDF之iText入门

32、设置单元格边框 

Java操作PDF之iText入门
//没有边框  
PdfPTable table1 = new PdfPTable(3);
table1.getDefaultCell().setBorder(PdfPCell.NO_BORDER);
table1.addCell(
new Paragraph("Cell 1"));
table1.addCell(
new Paragraph("Cell 2"));
table1.addCell(
new Paragraph("Cell 3"));
document.add(table1);

//边框粗细颜色
document.newPage();
Rectangle b1
= new Rectangle(0f, 0f);
b1.setBorderWidthLeft(6f);
b1.setBorderWidthBottom(5f);
b1.setBorderWidthRight(4f);
b1.setBorderWidthTop(2f);
b1.setBorderColorLeft(BaseColor.RED);
b1.setBorderColorBottom(BaseColor.ORANGE);
b1.setBorderColorRight(BaseColor.YELLOW);
b1.setBorderColorTop(BaseColor.GREEN);
PdfPTable table2
= new PdfPTable(1);
PdfPCell cell
= new PdfPCell(new Paragraph("Cell 1"));
cell.cloneNonPositionParameters(b1);
table2.addCell(cell);
document.add(table2);
Java操作PDF之iText入门

33、PdfPTableEvent 

34、PdfPCellEvent 

35、PdfPageEventHelper 

36、生成Barcode QRCode
 

Java操作PDF之iText入门
String myString = "http://www.google.com";  

Barcode128 code128
= new Barcode128();
code128.setCode(myString.trim());
code128.setCodeType(Barcode128.CODE128);
Image code128Image
= code128.createImageWithBarcode(cb, null, null);
code128Image.setAbsolutePosition(
10,700);
code128Image.scalePercent(
125);
doc.add(code128Image);

BarcodeQRCode qrcode
= new BarcodeQRCode(myString.trim(), 1, 1, null);
Image qrcodeImage
= qrcode.getImage();
qrcodeImage.setAbsolutePosition(
10,600);
qrcodeImage.scalePercent(
200);
doc.add(qrcodeImage);
Java操作PDF之iText入门

 

37、HTML to PDF 

Java操作PDF之iText入门
Document document = new Document(PageSize.LETTER);  
PdfWriter.getInstance(document,
new FileOutputStream("c://testpdf1.pdf"));
document.open();
HTMLWorker htmlWorker
= new HTMLWorker(document);
htmlWorker.parse(
new StringReader("<h1>This is a test!</h1>"));
document.close();
Java操作PDF之iText入门