iText，itextpdf

iText，itextpdf

iText是著名的開放項目，是用於生成PDF文檔的一個java類庫。通過iText不僅可以生成PDF或rtf的文檔，而且可以將XML、Html文件轉化為PDF文件。 

官方網站：http://itextpdf.com/

示例版本：itextpdf-5.2.1.jar

示例代碼

Rectangle rect = new Rectangle(PageSize.B5.rotate()); //頁面大小
rect.setBackgroundColor(BaseColor.ORANGE); //頁面背景色
Document doc = new Document(rect);  
PdfWriter writer = PdfWriter.getInstance(doc, out); 
writer.setPdfVersion(PdfWriter.PDF_VERSION_1_2); //PDF版本(默認1.4)
/* 設置密碼 */
writer.setEncryption("Hello".getBytes(), "World".getBytes(),  
        PdfWriter.ALLOW_SCREENREADERS,  
        PdfWriter.STANDARD_ENCRYPTION_128);  

/* PDF屬性 */
doc.addTitle("Title@sample");  
doc.addAuthor("Author@rensanning");  
doc.addSubject("Subject@iText sample");  
doc.addKeywords("Keywords@iText");  
doc.addCreator("Creator@iText");

doc.setMargins(10, 20, 30, 40);
doc.open();  
doc.add(new Paragraph("Hello World")); //在此處追加內容

document.close(); 

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"));

添加多個Page

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

/* 刪除Page */
reader.selectPages("1,3");
PdfStamper stamp = new PdfStamper(reader, new FileOutputStream(FILE_DIR + "deletePage2.pdf"));

/* 插入Page */
stamp.insertPage(2, reader.getPageSize(1));  

stamp.close();
reader.close();

/* 排序Page */
PdfWriter writer = PdfWriter.getInstance(doc, out);  
writer.setLinearPageMode(); 
writer.reorderPages({4,3,2,1});  

Page刪除、插入、排序

/* Chunk對象: 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對象: 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對象: 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對象: 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);

/* Anchor對象: internal and external links */
document.newPage();
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對象 */
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);//旋轉
document.add(img);

/* Chapter, Section對象（目錄） */
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);

添加內容

Paragraph p = new Paragraph("段落內容");

/* 對齊方式 */
p.setAlignment(Element.ALIGN_JUSTIFIED);

/* 縮進 */
p.setIndentationLeft(1 * 15f);
p.setIndentationRight((5 - 1) * 15f);

/* 間距 */
p.setSpacingAfter(15f);
p.setSpacingBefore(15f);

段落設置

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);

表格

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");

/* 將表格插入到指定位置 */
table.addCell(nested1);
table.addCell(nested2);

document.add(table);

表格嵌套

PdfPTable table = new PdfPTable(widths);

/* 百分比寬度 */
table.setWidthPercentage(50);
table.setHorizontalAlignment(Element.ALIGN_RIGHT); //對齊方式

/* 固定寬度 */
table.setTotalWidth(300);
table.setLockedWidth(true);

/* 上下間距 */
table.setSpacingBefore(15f);
table.setSpacingAfter(15f);

/* 百分比列寬 */
float[] widths = {40f, 40f, 20f, 80f};
table.setWidths(widths);

/* 固定列寬 */
Rectangle r = new Rectangle(PageSize.A4.getRight(72), PageSize.A4.getTop(72));
table.setWidthPercentage(widths, r);

表格設置

PdfPTable datatable = new PdfPTable(5);
datatable.setWidths({ 9, 4, 8, 10, 8 });// percentage

datatable.addCell("Clock #");
datatable.addCell("Trans Type");
datatable.addCell("Cusip");
datatable.addCell("Long Name");
datatable.addCell("Quantity");

datatable.setHeaderRows(1);

表格標題行

PdfPCell cell = new PdfPCell(new Paragraph("blah blah"));
cell.setNoWrap(false); //自動換行
cell.setFixedHeight(50f); //固定高度
cell.setMinimumHeight(50f); //最小高度
cell.setUseBorderPadding(true); //內填充
cell.setPadding(10f); // 內填充統一
cell.setPaddingTop(0f); //內填充上
cell.setPaddingLeft(20f);//內填充左
cell.setBorder(Rectangle.BOTTOM); //邊框
cell.setBorderColorBottom(BaseColor.MAGENTA); //邊框顏色
cell.setBorderWidthBottom(5f); //邊框寬度
cell.setBackgroundColor(BaseColor.RED); //背景
cell.setGrayFill(0.25f);//背景灰色度

table.setExtendLastRow(true); //最後一行拉長到page底部
cell = new PdfPCell(new Paragraph("page footer",fontZH));

cell = table1.getDefaultCell(); // 默認單元格,提供默認設置

單元格設置 水印背景

/* 左右箭頭 */
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) {}
        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();
    }
});

/* 直線 */
Paragraph p1 = new Paragraph("LEFT");
p1.add(new Chunk(new LineSeparator()));
p1.add("R");
document.add(p1);

/* 點線 */
Paragraph p2 = new Paragraph("LEFT");
p2.add(new Chunk(new DottedLineSeparator()));
p2.add("R");
document.add(p2);

/* 下滑線 */
LineSeparator UNDERLINE = new LineSeparator(1, 100, null, Element.ALIGN_CENTER, -2);
Paragraph p3 = new Paragraph("NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN");
p3.add(UNDERLINE);

畫圖

/* 添加一些Page */
document.newPage();
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"));

/* 生成大綱 */
PdfContentByte cb = writer.getDirectContent();
PdfOutline root = cb.getRootOutline();

PdfOutline oline1 = new PdfOutline(root, PdfAction.gotoLocalPage("1", false), "Chapter 1");
PdfOutline oline2 = new PdfOutline(root, PdfAction.gotoLocalPage("2", false), "Chapter 2");
PdfOutline oline2_1 = new PdfOutline(oline2, PdfAction.gotoLocalPage("2.1", false), "Sub 2.1");
PdfOutline oline2_2 = new PdfOutline(oline2, PdfAction.gotoLocalPage("2.2", false), "Sub 2.2");
PdfOutline oline3 = new PdfOutline(root, PdfAction.gotoLocalPage("3", false), "Chapter 3");

目錄大綱

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) {}
        cb.setFontAndSize(bf, 10);
        
        /* Header,分左中右 */
        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,分左中右 */
        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();
    }
});

頁眉頁腳

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);//間隔時間
    }
});

幻燈片放映 條形碼

/* 實現FontProvider接口比如叫MyFontProvider，在getFont()方法裡設置你的字體庫 */
HashMap providers = new HashMap();
providers.put(HTMLWorker.FONT_PROVIDER, new MyFontProvider());
List<Element> list = HTMLWorker.parseToList(new StringReader(html),new StyleSheet(),providers);
for (Element e : list) {
    document.add(e);
}

自定義字體

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

/* 拆分一 */
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();

/* 拆分二 */
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();

拆分PDF 合並PDF

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();

HTML轉換為PDF

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();

壓縮為ZIP