本章的例子，请参考我翻译的博文：iText7高级教程之构建基础块——1.引入字体,里面有详细的解释,有什么不懂得也可以评论或者私信我！
例子1：创建不嵌入的三种字体的文档
三种不同的字体来创建带有标题和作者的PDF文档，三种字体是：Helvetica、Times-Bold和Times-Roman。代码如下
import com.itextpdf.io.font.FontConstants;import com.itextpdf.kernel.font.PdfFont;import com.itextpdf.kernel.font.PdfFontFactory;import com.itextpdf.kernel.pdf.PdfDocument;import com.itextpdf.kernel.pdf.PdfWriter;import com.itextpdf.layout.Document;import com.itextpdf.layout.element.Paragraph;import com.itextpdf.layout.element.Text;import java.io.File;import java.io.IOException;public class C01E01_Text_Paragraph {public static final String DEST = "results/chapter01/text_paragraph.pdf";public static void main(String args[]) throws IOException {File file = new File(DEST);file.getParentFile().mkdirs();new C01E01_Text_Paragraph().createPdf(DEST);}public void createPdf(String dest) throws IOException {// Initialize PDF documentPdfDocument pdf = new PdfDocument(new PdfWriter(dest));// Initialize documentDocument document = new Document(pdf);// Add contentPdfFont font = PdfFontFactory.createFont(FontConstants.TIMES_ROMAN);PdfFont bold = PdfFontFactory.createFont(FontConstants.TIMES_BOLD);Text title = new Text("The Strange Case of Dr. Jekyll and Mr. Hyde").setFont(bold);Text author = new Text("Robert Louis Stevenson").setFont(font);Paragraph p = new Paragraph().add(title).add(" by ").add(author);document.add(p);//Close documentdocument.close();}}
例子2：创建嵌入字体的三种字体文档
使用ttf文件，创建Cardo-Regular，Cardo-Bold和Cardo-Italic字体，代码如下：
import com.itextpdf.io.font.FontProgram;import com.itextpdf.io.font.FontProgramFactory;import com.itextpdf.io.font.PdfEncodings;import com.itextpdf.kernel.font.PdfFont;import com.itextpdf.kernel.font.PdfFontFactory;import com.itextpdf.kernel.pdf.PdfDocument;import com.itextpdf.kernel.pdf.PdfWriter;import com.itextpdf.layout.Document;import com.itextpdf.layout.element.Paragraph;import com.itextpdf.layout.element.Text;import java.io.File;import java.io.IOException;public class C01E02_Text_Paragraph_Cardo {public static final String DEST = "results/chapter01/text_paragraph_cardo.pdf";public static final String REGULAR = "src/main/resources/fonts/Cardo-Regular.ttf";public static final String BOLD = "src/main/resources/fonts/Cardo-Bold.ttf";public static final String ITALIC = "src/main/resources/fonts/Cardo-Italic.ttf";public static void main(String args[]) throws IOException {File file = new File(DEST);file.getParentFile().mkdirs();new C01E02_Text_Paragraph_Cardo().createPdf(DEST);}public void createPdf(String dest) throws IOException {// Initialize PDF documentPdfDocument pdf = new PdfDocument(new PdfWriter(dest));// Initialize documentDocument document = new Document(pdf);// Add contentFontProgram fontProgram = FontProgramFactory.createFont(REGULAR);PdfFont font = PdfFontFactory.createFont(fontProgram, PdfEncodings.WINANSI, true);PdfFont bold = PdfFontFactory.createFont(BOLD, true);PdfFont italic = PdfFontFactory.createFont(ITALIC, true);Text title = new Text("The Strange Case of Dr. Jekyll and Mr. Hyde").setFont(bold);Text author = new Text("Robert Louis Stevenson").setFont(font);Paragraph p = new Paragraph().setFont(italic).add(title).add(" by ").add(author);document.add(p);//Close documentdocument.close();}}
一个PdfFont对象只能被用于一个PdfDocument，所以我们创建三个PdfFont来创建三个文档，代码如下：
import com.itextpdf.io.font.FontProgram;import com.itextpdf.io.font.FontProgramFactory;import com.itextpdf.io.font.PdfEncodings;import com.itextpdf.kernel.font.PdfFont;import com.itextpdf.kernel.font.PdfFontFactory;import com.itextpdf.kernel.pdf.PdfDocument;import com.itextpdf.kernel.pdf.PdfWriter;import com.itextpdf.layout.Document;import com.itextpdf.layout.element.Paragraph;import com.itextpdf.layout.element.Text;import java.io.File;import java.io.IOException;public class C01E02_Text_Paragraph_Cardo2 {public static final String DEST = "results/chapter01/text_paragraph_cardo%s.pdf";public static final String REGULAR = "src/main/resources/fonts/Cardo-Regular.ttf";public static final String BOLD = "src/main/resources/fonts/Cardo-Bold.ttf";public static final String ITALIC = "src/main/resources/fonts/Cardo-Italic.ttf";protected PdfFont font;protected PdfFont bold;protected PdfFont italic;public static void main(String args[]) throws IOException {File file = new File(DEST);file.getParentFile().mkdirs();C01E02_Text_Paragraph_Cardo2 app = new C01E02_Text_Paragraph_Cardo2();FontProgram fontProgram = FontProgramFactory.createFont(REGULAR);FontProgram boldProgram = FontProgramFactory.createFont(BOLD);FontProgram italicProgram = FontProgramFactory.createFont(ITALIC);for (int i = 0; i < 3; ) {app.font = PdfFontFactory.createFont(fontProgram, PdfEncodings.WINANSI, true);app.bold = PdfFontFactory.createFont(boldProgram, PdfEncodings.WINANSI, true);app.italic = PdfFontFactory.createFont(italicProgram, PdfEncodings.WINANSI, true);app.createPdf(String.format(DEST, ++i));}}public void createPdf(String dest) throws IOException {// Initialize PDF documentPdfDocument pdf = new PdfDocument(new PdfWriter(dest));// Initialize documentDocument document = new Document(pdf);// Add contentText title = new Text("The Strange Case of Dr. Jekyll and Mr. Hyde").setFont(bold);Text author = new Text("Robert Louis Stevenson").setFont(font);Paragraph p = new Paragraph().setFont(italic).add(title).add(" by ").add(author);document.add(p);//Close documentdocument.close();}}
例子3：不嵌入字体
如果我们不把字体嵌入到文档中，那结果就会显示不正确，代码如下：
import com.itextpdf.kernel.font.PdfFont;import com.itextpdf.kernel.font.PdfFontFactory;import com.itextpdf.kernel.pdf.PdfDocument;import com.itextpdf.kernel.pdf.PdfWriter;import com.itextpdf.layout.Document;import com.itextpdf.layout.element.Paragraph;import com.itextpdf.layout.element.Text;import java.io.File;import java.io.IOException;public class C01E03_Text_Paragraph_NoCardo {public static final String DEST = "results/chapter01/text_paragraph_no_cardo.pdf";public static final String REGULAR = "src/main/resources/fonts/Cardo-Regular.ttf";public static final String BOLD = "src/main/resources/fonts/Cardo-Bold.ttf";public static final String ITALIC = "src/main/resources/fonts/Cardo-Italic.ttf";public static void main(String args[]) throws IOException {File file = new File(DEST);file.getParentFile().mkdirs();new C01E03_Text_Paragraph_NoCardo().createPdf(DEST);}public void createPdf(String dest) throws IOException {// Initialize PDF documentPdfDocument pdf = new PdfDocument(new PdfWriter(dest));// Initialize documentDocument document = new Document(pdf);// Add content: the fonts aren't embedded! Don't do this!PdfFont font = PdfFontFactory.createFont(REGULAR);PdfFont bold = PdfFontFactory.createFont(BOLD);PdfFont italic = PdfFontFactory.createFont(ITALIC);Text title = new Text("The Strange Case of Dr. Jekyll and Mr. Hyde").setFont(bold);Text author = new Text("Robert Louis Stevenson").setFont(font);Paragraph p = new Paragraph().setFont(italic).add(title).add(" by ").add(author);document.add(p);//Close documentdocument.close();}}
例子4：错误地创建捷克文、俄文和韩文
我们尝试创建带有捷克文、俄文和韩文的文档，但是没有字体程序，就会显示错误，代码如下：
import com.itextpdf.io.font.FontConstants;import com.itextpdf.kernel.font.PdfFont;import com.itextpdf.kernel.font.PdfFontFactory;import com.itextpdf.kernel.pdf.PdfDocument;import com.itextpdf.kernel.pdf.PdfWriter;import com.itextpdf.layout.Document;import com.itextpdf.layout.element.Paragraph;import java.io.File;import java.io.IOException;public class C01E04_Czech_Russian_Korean_Wrong {public static final String DEST = "results/chapter01/czech_russian_korean_wrong.pdf";public static final String CZECH ="Podivn\u00fd p\u0159\u00edpad Dr. Jekylla a pana Hyda";public static final String RUSSIAN ="\u0421\u0442\u0440\u0430\u043d\u043d\u0430\u044f "+ "\u0438\u0441\u0442\u043e\u0440\u0438\u044f "+ "\u0434\u043e\u043a\u0442\u043e\u0440\u0430 "+ "\u0414\u0436\u0435\u043a\u0438\u043b\u0430 \u0438 "+ "\u043c\u0438\u0441\u0442\u0435\u0440\u0430 "+ "\u0425\u0430\u0439\u0434\u0430";public static final String KOREAN ="\ud558\uc774\ub4dc, \uc9c0\ud0ac, \ub098";public static void main(String args[]) throws IOException {File file = new File(DEST);file.getParentFile().mkdirs();new C01E04_Czech_Russian_Korean_Wrong().createPdf(DEST);}public void createPdf(String dest) throws IOException {// Initialize PDF documentPdfDocument pdf = new PdfDocument(new PdfWriter(dest));// Initialize documentDocument document = new Document(pdf);// Add contentPdfFont font = PdfFontFactory.createFont(FontConstants.TIMES_ROMAN);document.add(new Paragraph().setFont(font).add(CZECH).add(" by Robert Louis Stevenson"));document.add(new Paragraph().setFont(font).add(RUSSIAN).add(" by Robert Louis Stevenson"));document.add(new Paragraph().setFont(font).add(KOREAN).add(" by Robert Louis Stevenson"));//Close documentdocument.close();}}
例子5：正确地创建捷克文、俄文和韩文
我们尝试创建带有捷克文、俄文和韩文的文档，同时使用兼容的字体程序，就会正确了,编码使用的是代码页，代码如下：
import com.itextpdf.io.font.PdfEncodings;import com.itextpdf.kernel.font.PdfFont;import com.itextpdf.kernel.font.PdfFontFactory;import com.itextpdf.kernel.pdf.PdfDocument;import com.itextpdf.kernel.pdf.PdfWriter;import com.itextpdf.layout.Document;import com.itextpdf.layout.element.Paragraph;import java.io.File;import java.io.IOException;public class C01E05_Czech_Russian_Korean_Right {public static final String DEST = "results/chapter01/czech_russian_korean.pdf";public static final String FONT = "src/main/resources/fonts/FreeSans.ttf";public static final String HCRBATANG = "src/main/resources/fonts/HANBatang.ttf";public static final String CZECH ="Podivn\u00fd p\u0159\u00edpad Dr. Jekylla a pana Hyda";public static final String RUSSIAN ="\u0421\u0442\u0440\u0430\u043d\u043d\u0430\u044f "+ "\u0438\u0441\u0442\u043e\u0440\u0438\u044f "+ "\u0434\u043e\u043a\u0442\u043e\u0440\u0430 "+ "\u0414\u0436\u0435\u043a\u0438\u043b\u0430 \u0438 "+ "\u043c\u0438\u0441\u0442\u0435\u0440\u0430 "+ "\u0425\u0430\u0439\u0434\u0430";public static final String KOREAN ="\ud558\uc774\ub4dc, \uc9c0\ud0ac, \ub098";public static void main(String args[]) throws IOException {File file = new File(DEST);file.getParentFile().mkdirs();new C01E05_Czech_Russian_Korean_Right().createPdf(DEST);}public void createPdf(String dest) throws IOException {// Initialize PDF documentPdfDocument pdf = new PdfDocument(new PdfWriter(dest));// Initialize documentDocument document = new Document(pdf);// Add contentPdfFont font1250 = PdfFontFactory.createFont(FONT, PdfEncodings.CP1250, true);document.add(new Paragraph().setFont(font1250).add(CZECH).add(" by Robert Louis Stevenson"));PdfFont font1251 = PdfFontFactory.createFont(FONT, "Cp1251", true);document.add(new Paragraph().setFont(font1251).add(RUSSIAN).add(" by Robert Louis Stevenson"));PdfFont fontUnicode = PdfFontFactory.createFont(HCRBATANG, PdfEncodings.IDENTITY_H, true);document.add(new Paragraph().setFont(fontUnicode).add(KOREAN).add(" by Robert Louis Stevenson"));//Close documentdocument.close();}}
例子6：使用Unicode创建捷克文、俄文和韩文的文档
我们尝试创建带有捷克文、俄文和韩文的文档，同时使用兼容的字体程序，就会正确了,编码使用的是Unicode，代码如下：
import com.itextpdf.io.font.PdfEncodings;import com.itextpdf.kernel.font.PdfFont;import com.itextpdf.kernel.font.PdfFontFactory;import com.itextpdf.kernel.pdf.PdfDocument;import com.itextpdf.kernel.pdf.PdfWriter;import com.itextpdf.layout.Document;import com.itextpdf.layout.element.Paragraph;import java.io.File;import java.io.IOException;public class C01E06_Czech_Russian_Korean_Unicode {public static final String DEST = "results/chapter01/czech_russian_korean_unicode.pdf";public static final String FONT = "src/main/resources/fonts/FreeSans.ttf";public static final String HCRBATANG = "src/main/resources/fonts/HANBatang.ttf";public static final String CZECH ="Podivn\u00fd p\u0159\u00edpad Dr. Jekylla a pana Hyda";public static final String RUSSIAN ="\u0421\u0442\u0440\u0430\u043d\u043d\u0430\u044f "+ "\u0438\u0441\u0442\u043e\u0440\u0438\u044f "+ "\u0434\u043e\u043a\u0442\u043e\u0440\u0430 "+ "\u0414\u0436\u0435\u043a\u0438\u043b\u0430 \u0438 "+ "\u043c\u0438\u0441\u0442\u0435\u0440\u0430 "+ "\u0425\u0430\u0439\u0434\u0430";public static final String KOREAN ="\ud558\uc774\ub4dc, \uc9c0\ud0ac, \ub098";public static void main(String args[]) throws IOException {File file = new File(DEST);file.getParentFile().mkdirs();new C01E06_Czech_Russian_Korean_Unicode().createPdf(DEST);}public void createPdf(String dest) throws IOException {// Initialize PDF documentPdfDocument pdf = new PdfDocument(new PdfWriter(dest));// Initialize documentDocument document = new Document(pdf);// Add contentPdfFont freeUnicode = PdfFontFactory.createFont(FONT, PdfEncodings.IDENTITY_H, true);document.add(new Paragraph().setFont(freeUnicode).add(CZECH).add(" by Robert Louis Stevenson"));document.add(new Paragraph().setFont(freeUnicode).add(RUSSIAN).add(" by Robert Louis Stevenson"));PdfFont fontUnicode = PdfFontFactory.createFont(HCRBATANG, PdfEncodings.IDENTITY_H, true);document.add(new Paragraph().setFont(fontUnicode).add(KOREAN).add(" by Robert Louis Stevenson"));//Close documentdocument.close();}}
例子7：改变字体大小
我们改变创建的字体的大小，代码如下：
import com.itextpdf.kernel.pdf.PdfDocument;import com.itextpdf.kernel.pdf.PdfWriter;import com.itextpdf.layout.Document;import com.itextpdf.layout.element.Paragraph;import com.itextpdf.layout.element.Text;import java.io.File;import java.io.IOException;public class C01E07_FontSize {public static final String DEST = "results/chapter01/font_size.pdf";public static void main(String args[]) throws IOException {File file = new File(DEST);file.getParentFile().mkdirs();new C01E07_FontSize().createPdf(DEST);}public void createPdf(String dest) throws IOException {// Initialize PDF documentPdfDocument pdf = new PdfDocument(new PdfWriter(dest));// Initialize documentDocument document = new Document(pdf);// Add contentText title1 = new Text("The Strange Case of ").setFontSize(12);Text title2 = new Text("Dr. Jekyll and Mr. Hyde").setFontSize(16);Text author = new Text("Robert Louis Stevenson");Paragraph p = new Paragraph().setFontSize(8).add(title1).add(title2).add(" by ").add(author);document.add(p);//Close documentdocument.close();}}
例子8：模仿粗体和斜体
当我们没有字体相应的粗体和斜体的字体程序时，我们可以使用iText7里面的函数来模仿粗体和斜体，代码如下：
import com.itextpdf.kernel.pdf.PdfDocument;import com.itextpdf.kernel.pdf.PdfWriter;import com.itextpdf.layout.Document;import com.itextpdf.layout.element.Paragraph;import com.itextpdf.layout.element.Text;import java.io.File;import java.io.IOException;public class C01E08_BoldItalic {public static final String DEST = "results/chapter01/bold_italic.pdf";public static void main(String args[]) throws IOException {File file = new File(DEST);file.getParentFile().mkdirs();new C01E08_BoldItalic().createPdf(DEST);}public void createPdf(String dest) throws IOException {// Initialize PDF documentPdfDocument pdf = new PdfDocument(new PdfWriter(dest));// Initialize documentDocument document = new Document(pdf);// Add contentText title1 = new Text("The Strange Case of ").setItalic();Text title2 = new Text("Dr. Jekyll and Mr. Hyde").setBold();Text author = new Text("Robert Louis Stevenson").setItalic().setBold();Paragraph p = new Paragraph().add(title1).add(title2).add(" by ").add(author);document.add(p);//Close documentdocument.close();}}
例子9：改变字体颜色
我们改变创建的字体的颜色，代码如下：
import com.itextpdf.kernel.color.Color;import com.itextpdf.kernel.pdf.PdfDocument;import com.itextpdf.kernel.pdf.PdfWriter;import com.itextpdf.kernel.pdf.canvas.PdfCanvasConstants;import com.itextpdf.layout.Document;import com.itextpdf.layout.element.Paragraph;import com.itextpdf.layout.element.Text;import java.io.File;import java.io.IOException;public class C01E09_ColorRendering {public static final String DEST = "results/chapter01/color_rendermode.pdf";public static void main(String args[]) throws IOException {File file = new File(DEST);file.getParentFile().mkdirs();new C01E09_ColorRendering().createPdf(DEST);}public void createPdf(String dest) throws IOException {// Initialize PDF documentPdfDocument pdf = new PdfDocument(new PdfWriter(dest));// Initialize documentDocument document = new Document(pdf);// Add contentText title1 = new Text("The Strange Case of ").setFontColor(Color.BLUE);Text title2 = new Text("Dr. Jekyll").setStrokeColor(Color.GREEN).setTextRenderingMode(PdfCanvasConstants.TextRenderingMode.FILL_STROKE);Text title3 = new Text(" and ");Text title4 = new Text("Mr. Hyde").setStrokeColor(Color.RED).setStrokeWidth(0.5f).setTextRenderingMode(PdfCanvasConstants.TextRenderingMode.STROKE);Paragraph p = new Paragraph().setFontSize(24).add(title1).add(title2).add(title3).add(title4);document.add(p);//Close documentdocument.close();}}
例子10：重用样式
我们可以定义一个样式用于多个对象，代码如下：
import com.itextpdf.io.font.FontConstants;import com.itextpdf.kernel.color.Color;import com.itextpdf.kernel.font.PdfFont;import com.itextpdf.kernel.font.PdfFontFactory;import com.itextpdf.kernel.pdf.PdfDocument;import com.itextpdf.kernel.pdf.PdfWriter;import com.itextpdf.layout.Document;import com.itextpdf.layout.Style;import com.itextpdf.layout.element.Paragraph;import com.itextpdf.layout.element.Text;import java.io.File;import java.io.IOException;public class C01E10_ReusingStyles {public static final String DEST = "results/chapter01/style_example.pdf";public static void main(String args[]) throws IOException {File file = new File(DEST);file.getParentFile().mkdirs();new C01E10_ReusingStyles().createPdf(DEST);}public void createPdf(String dest) throws IOException {PdfDocument pdf = new PdfDocument(new PdfWriter(dest));Document document = new Document(pdf);Style normal = new Style();PdfFont font = PdfFontFactory.createFont(FontConstants.TIMES_ROMAN);normal.setFont(font).setFontSize(14);Style code = new Style();PdfFont monospace = PdfFontFactory.createFont(FontConstants.COURIER);code.setFont(monospace).setFontColor(Color.RED).setBackgroundColor(Color.LIGHT_GRAY);Paragraph p = new Paragraph();p.add(new Text("The Strange Case of ").addStyle(normal));p.add(new Text("Dr. Jekyll").addStyle(code));p.add(new Text(" and ").addStyle(normal));p.add(new Text("Mr. Hyde").addStyle(code));p.add(new Text(".").addStyle(normal));document.add(p);document.close();}}
Example代码下载
本章代码可在如下地址下载（IDEA工程）：iText7高级教程之构建基础块——第一章源代码工程
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