Java Tutorial/PDF/Text

Материал из Java эксперт
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Add text to an existing Pdf document

   <source lang="java">

import java.io.FileOutputStream; import com.lowagie.text.Image; import com.lowagie.text.pdf.BaseFont; import com.lowagie.text.pdf.PdfContentByte; import com.lowagie.text.pdf.PdfReader; import com.lowagie.text.pdf.PdfStamper; public class MainClass { 

 public static void main(String[] args) throws Exception {
   PdfReader reader = new PdfReader("HelloWorldRead.pdf");
   PdfStamper stamper = new PdfStamper(reader, new FileOutputStream("HelloWorldStamper2.pdf"));
   Image img = Image.getInstance("watermark.jpg");
   img.setAbsolutePosition(200, 400);
   BaseFont bf = BaseFont.createFont(BaseFont.HELVETICA, BaseFont.WINANSI, BaseFont.NOT_EMBEDDED);
   PdfContentByte under, over;
   int total = reader.getNumberOfPages() + 1;
   for (int i = 1; i < total; i++) {
     stamper.setRotateContents(false);
     under = stamper.getUnderContent(i);
     under.addImage(img);
     over = stamper.getOverContent(i);
     over.beginText();
     over.setFontAndSize(bf, 18);
     over.setTextMatrix(30, 30);
     over.showText("page " + i);
     over.endText();
   }
   stamper.close();
 }

}</source>





Begin text and end text

   <source lang="java">

import java.io.FileOutputStream; import com.lowagie.text.Document; import com.lowagie.text.pdf.BaseFont; import com.lowagie.text.pdf.PdfContentByte; import com.lowagie.text.pdf.PdfWriter; public class MainClass { 

 public static void main(String[] args) throws Exception {
   Document document = new Document();
   PdfWriter writer = PdfWriter.getInstance(document, new FileOutputStream("2.pdf"));
   document.open();
   PdfContentByte cb = writer.getDirectContent();
   String text = "this is a test";
   BaseFont bf = BaseFont.createFont(BaseFont.HELVETICA, BaseFont.WINANSI, BaseFont.NOT_EMBEDDED);
   cb.setFontAndSize(bf, 12);
   cb.beginText();
   

   cb.showTextAligned(PdfContentByte.ALIGN_CENTER, text + " Center", 250, 650, 0);
   cb.endText();
   document.close();
 }

}</source>





Chunk text with underline

   <source lang="java">

import java.awt.Color; import java.io.FileOutputStream; import com.lowagie.text.Chunk; import com.lowagie.text.Document; import com.lowagie.text.Font; import com.lowagie.text.Paragraph; import com.lowagie.text.pdf.PdfContentByte; import com.lowagie.text.pdf.PdfWriter; public class MainClass { 

 public static void main(String[] args) throws Exception {
   Document document = new Document();
   PdfWriter.getInstance(document, new FileOutputStream("2.pdf"));
   document.open();
   Chunk foxLineUnder = new Chunk("this is a test");
   foxLineUnder.setUnderline(0.2f, -2f);
   Paragraph p = new Paragraph ();
   p.add(foxLineUnder);
   document.add(p);
   document.add(Chunk.NEWLINE);
   document.close();
 }

}</source>





Create and use PdfTextArray

   <source lang="java">

import java.awt.Color; import java.io.FileOutputStream; import java.io.IOException; import com.lowagie.text.Document; import com.lowagie.text.DocumentException; import com.lowagie.text.pdf.BaseFont; import com.lowagie.text.pdf.PdfContentByte; import com.lowagie.text.pdf.PdfTemplate; import com.lowagie.text.pdf.PdfTextArray; import com.lowagie.text.pdf.PdfWriter; public class MainClass { 

 public static void main(String[] args) throws Exception {
   Document document = new Document();
     PdfWriter writer = PdfWriter.getInstance(
         document,
         new FileOutputStream("2.pdf"));
     document.open();
     String text = "jexp";
     PdfContentByte cb = writer.getDirectContent();
     BaseFont bf = BaseFont.createFont(BaseFont.HELVETICA,
         BaseFont.WINANSI, BaseFont.NOT_EMBEDDED);
     cb.beginText();
     cb.moveText(36, 806);
     cb.setFontAndSize(bf, 24);
     cb.moveTextWithLeading(0, -36);
     cb.showText(text);
     cb.newlineText();
     
     PdfTextArray array = new PdfTextArray("J");
     array.add(120);
     array.add("a");
     array.add(120);
     array.add("v");
     array.add(95);
     array.add("a2s");
     cb.showText(array);
     
     cb.endText();
   document.close();
 }

}</source>





Draw Unicode string

   <source lang="java">

import java.awt.Graphics2D; import java.io.FileOutputStream; import com.lowagie.text.Document; import com.lowagie.text.pdf.PdfContentByte; import com.lowagie.text.pdf.PdfTemplate; import com.lowagie.text.pdf.PdfWriter; public class MainClass { 

 public static void main(String[] args) throws Exception {
   Document document = new Document();
   PdfWriter writer = PdfWriter.getInstance(document, new FileOutputStream("2.pdf"));
   document.open();
   String text = "\u5e73\u548C";
   PdfContentByte cb = writer.getDirectContent();
   PdfTemplate tp = cb.createTemplate(100, 50);
   Graphics2D g2 = tp.createGraphicsShapes(100, 50);
   java.awt.Font font = new java.awt.Font("Arial Unicode MS", java.awt.Font.PLAIN, 12);
   g2.setFont(font);
   g2.drawString(text, 0, 40);
   g2.dispose();
   cb.addTemplate(tp, 36, 780);
   document.close();
 }

}</source>





PdfContentByte.TEXT_RENDER_MODE_STROKE

   <source lang="java">

import java.awt.Color; import java.io.FileOutputStream; import java.io.IOException; import com.lowagie.text.Document; import com.lowagie.text.DocumentException; import com.lowagie.text.pdf.BaseFont; import com.lowagie.text.pdf.PdfContentByte; import com.lowagie.text.pdf.PdfTemplate; import com.lowagie.text.pdf.PdfTextArray; import com.lowagie.text.pdf.PdfWriter; public class MainClass { 

 public static void main(String[] args) throws Exception {
   Document document = new Document();
     PdfWriter writer = PdfWriter.getInstance(
         document,
         new FileOutputStream("2.pdf"));
     document.open();
     String text = "jexp";
     PdfContentByte cb = writer.getDirectContent();
     BaseFont bf = BaseFont.createFont(BaseFont.HELVETICA,
         BaseFont.WINANSI, BaseFont.NOT_EMBEDDED);
     cb.beginText();
     PdfTemplate tp2 = cb.createTemplate(200, 36);
     tp2.beginText();
     tp2.setTextRenderingMode(PdfContentByte.TEXT_RENDER_MODE_STROKE);
     tp2.setFontAndSize(bf, 24);
     tp2.moveText(1, -1);
     tp2.showText(text);
     tp2.endText();
     cb.addTemplate(tp2, 36, 10);
     
     cb.endText();
   document.close();
 }

}</source>





Set Text Rendering Mode

   <source lang="java">

import java.awt.Color; import java.io.FileOutputStream; import java.io.IOException; import com.lowagie.text.Document; import com.lowagie.text.DocumentException; import com.lowagie.text.pdf.BaseFont; import com.lowagie.text.pdf.PdfContentByte; import com.lowagie.text.pdf.PdfTemplate; import com.lowagie.text.pdf.PdfTextArray; import com.lowagie.text.pdf.PdfWriter; public class MainClass { 

 public static void main(String[] args) throws Exception {
   Document document = new Document();
     PdfWriter writer = PdfWriter.getInstance(
         document,
         new FileOutputStream("2.pdf"));
     document.open();
     String text = "jexp";
     PdfContentByte cb = writer.getDirectContent();
     BaseFont bf = BaseFont.createFont(BaseFont.HELVETICA,
         BaseFont.WINANSI, BaseFont.NOT_EMBEDDED);
     cb.beginText();
     PdfTemplate tp1 = cb.createTemplate(160, 36);
     tp1.beginText();
     tp1.setTextRenderingMode(PdfContentByte.TEXT_RENDER_MODE_FILL);
     tp1.setFontAndSize(bf, 24);
     tp1.moveText(6, -6);
     tp1.showText(text);
     tp1.endText();
     cb.addTemplate(tp1, 36, 240);
     
     cb.endText();
   document.close();
 }

}</source>





Set Word Spacing

   <source lang="java">

import java.awt.Color; import java.io.FileOutputStream; import java.io.IOException; import com.lowagie.text.Document; import com.lowagie.text.DocumentException; import com.lowagie.text.pdf.BaseFont; import com.lowagie.text.pdf.PdfContentByte; import com.lowagie.text.pdf.PdfTemplate; import com.lowagie.text.pdf.PdfTextArray; import com.lowagie.text.pdf.PdfWriter; public class MainClass { 

 public static void main(String[] args) throws Exception {
   Document document = new Document();
     PdfWriter writer = PdfWriter.getInstance(
         document,
         new FileOutputStream("2.pdf"));
     document.open();
     String text = "jexp";
     PdfContentByte cb = writer.getDirectContent();
     BaseFont bf = BaseFont.createFont(BaseFont.HELVETICA,
         BaseFont.WINANSI, BaseFont.NOT_EMBEDDED);
     cb.beginText();
     cb.moveText(36, 806);
     cb.setFontAndSize(bf, 24);
     cb.moveTextWithLeading(0, -36);
     cb.showText(text);
     cb.newlineText();
     
     PdfTextArray array = new PdfTextArray("J");
     array.add(120);
     array.add("a");
     array.add(120);
     array.add("v");
     array.add(95);
     array.add("a2s");
     cb.showText(array);
     cb.setWordSpacing(50);
     cb.endText();
   document.close();
 }

}</source>





Text alignment

   <source lang="java">

import java.io.FileOutputStream; import com.lowagie.text.Document; import com.lowagie.text.pdf.BaseFont; import com.lowagie.text.pdf.PdfContentByte; import com.lowagie.text.pdf.PdfWriter; public class MainClass { 

 public static void main(String[] args) throws Exception {
   Document document = new Document();
   PdfWriter writer = PdfWriter.getInstance(document, new FileOutputStream("2.pdf"));
   document.open();
   PdfContentByte cb = writer.getDirectContent();
   String text = "this is a test";
   BaseFont bf = BaseFont.createFont(BaseFont.HELVETICA, BaseFont.WINANSI, BaseFont.NOT_EMBEDDED);
   cb.setFontAndSize(bf, 12);
   cb.beginText();

   for (int i = 0; i < 360; i += 30) {
     cb.showTextAligned(PdfContentByte.ALIGN_LEFT, text, 200, 300, i);
   }
   cb.endText();
   document.close();
 }

}</source>





Text is added at an absolute position and the stream with the content of a page is not compressed

   <source lang="java">

import java.io.FileOutputStream; import java.io.IOException; import com.lowagie.text.*; import com.lowagie.text.pdf.BaseFont; import com.lowagie.text.pdf.PdfContentByte; import com.lowagie.text.pdf.PdfWriter; public class HelloWorldAbsolute { 

 public static void main(String[] args) throws Exception {
   Document.rupress = false;
   Document document = new Document(PageSize.A4);
   PdfWriter writer = PdfWriter.getInstance(document, new FileOutputStream(
       "HelloWorldAbsolute.pdf"));
   document.open();
   PdfContentByte cb = writer.getDirectContent();
   BaseFont bf = BaseFont.createFont(BaseFont.HELVETICA, BaseFont.CP1252,
       BaseFont.NOT_EMBEDDED);
   cb.saveState(); 
   cb.beginText();
   cb.moveText(36, 806); 
   cb.moveText(0, -18); 
   cb.setFontAndSize(bf, 12); 
   cb.showText("Hello World"); 
   cb.endText(); 
   cb.restoreState(); 
   document.close();
 }

}</source>





Text Matrix

   <source lang="java">

import java.io.FileOutputStream; import com.lowagie.text.Document; import com.lowagie.text.pdf.BaseFont; import com.lowagie.text.pdf.PdfContentByte; import com.lowagie.text.pdf.PdfWriter; public class MainClass { 

 public static void main(String[] args) throws Exception {
   Document document = new Document();
   PdfWriter writer = PdfWriter.getInstance(document, new FileOutputStream("2.pdf"));
   document.open();
   PdfContentByte cb = writer.getDirectContent();
   String text = "this is a test";
   BaseFont bf = BaseFont.createFont(BaseFont.HELVETICA, BaseFont.WINANSI, BaseFont.NOT_EMBEDDED);
   cb.setFontAndSize(bf, 12);
   cb.beginText();
   
   cb.setTextMatrix(50, 700);
   cb.showText(text);
   cb.endText();
   document.close();
 }

}</source>





Text with line above

   <source lang="java">

import java.awt.Color; import java.io.FileOutputStream; import com.lowagie.text.Chunk; import com.lowagie.text.Document; import com.lowagie.text.Font; import com.lowagie.text.Paragraph; import com.lowagie.text.pdf.PdfContentByte; import com.lowagie.text.pdf.PdfWriter; public class MainClass { 

 public static void main(String[] args) throws Exception {
   Document document = new Document();
   PdfWriter.getInstance(document, new FileOutputStream("2.pdf"));
   document.open();
   Chunk line = new Chunk("this is a test");
   line.setUnderline(0.2f, 14f);
   Paragraph p = new Paragraph ();
   p.add(line);
   document.add(p);
   document.add(Chunk.NEWLINE);
   document.close();
 }

}</source>


Источник — «http://jexp.ru/index.php?title=Java_Tutorial/PDF/Text&oldid=5526»