Java开源工具iText生成PDF简单实例

iText下载页面： http://sourceforge.net/projects/itext/files/
1.创建简单的PDF文件

package console.pdf;

import java.io.FileNotFoundException;
import java.io.FileOutputStream;

import com.itextpdf.text.Document;
import com.itextpdf.text.DocumentException;
import com.itextpdf.text.PageSize;
import com.itextpdf.text.Paragraph;
import com.itextpdf.text.pdf.PdfWriter;

/**
* 使用iText生成PDF文件
*/
public class CreatePDF {

public static void main(String[] args) {
   CreatePDF p001 = new CreatePDF();

String filename = "P001.pdf";
   p001.createPDF(filename);
 }

public void createPDF(String filename) {
   // step 1
   Document document = new Document(PageSize.A4);
   // step 2
   try {
     PdfWriter.getInstance(document, new FileOutputStream(filename));

document.addTitle("ID.NET");
     document.addAuthor("dotuian");
     document.addSubject("This is the subject of the PDF file.");
     document.addKeywords("This is the keyword of the PDF file.");

// step 3
     document.open();
     // step 4
     document.add(new Paragraph("Hello World!"));

} catch (FileNotFoundException e) {
     e.printStackTrace();
   } catch (DocumentException e) {
     e.printStackTrace();
   } finally {
     // step 5
     document.close();
   }
 }

}

2.在PDF文件中添加Table

package console.pdf;

import java.io.FileNotFoundException;
import java.io.FileOutputStream;

import com.itextpdf.text.BaseColor;
import com.itextpdf.text.Document;
import com.itextpdf.text.DocumentException;
import com.itextpdf.text.PageSize;
import com.itextpdf.text.Phrase;
import com.itextpdf.text.Rectangle;
import com.itextpdf.text.pdf.PdfPCell;
import com.itextpdf.text.pdf.PdfPTable;
import com.itextpdf.text.pdf.PdfWriter;

/**
* 使用iText生成PDF文件
* 在PDF文件中创建表格
*/
public class TableOfPDF {

public static void main(String[] args) {
   TableOfPDF p001 = new TableOfPDF();

String filename = "P002.pdf";
   p001.createPDF(filename);
 }

public void createPDF(String filename) {
   // step 1
   Document document = new Document(PageSize.A4);
   // step 2
   try {
     PdfWriter.getInstance(document, new FileOutputStream(filename));

document.addTitle("ID.NET");
     document.addAuthor("dotuian");
     document.addSubject("This is the subject of the PDF file.");
     document.addKeywords("This is the keyword of the PDF file.");

// step 3
     document.open();
     // step 4
     PdfPTable table = createTable1();
     document.add(table);

table = createTable2();
     table.setSpacingBefore(5);
     table.setSpacingAfter(5);
     document.add(table);

table = createTable3();
     document.add(table);

table = createTable4();
     table.setSpacingBefore(5);
     table.setSpacingAfter(5);
     document.add(table);

table = createTable5();
     document.add(table);

table = createTable6();
     document.add(table);

} catch (FileNotFoundException e) {
     e.printStackTrace();
   } catch (DocumentException e) {
     e.printStackTrace();
   } finally {
     // step 5
     document.close();
   }
 }

/**
  * Creates a table; widths are set with setWidths().
  *
  * @return a PdfPTable
  * @throws DocumentException
  */
 public static PdfPTable createTable1() throws DocumentException {
   PdfPTable table = new PdfPTable(3);
   table.setWidthPercentage(288 / 5.23f);
   table.setWidths(new int[] { 2, 1, 1 });

PdfPCell cell;
   cell = new PdfPCell(new Phrase("Table 1"));
   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");
   return table;
 }

/**
  * Creates a table; widths are set with setWidths().
  *
  * @return a PdfPTable
  * @throws DocumentException
  */
 public static PdfPTable createTable2() throws DocumentException {
   PdfPTable table = new PdfPTable(3);
   table.setTotalWidth(288);
   table.setLockedWidth(true);
   table.setWidths(new float[] { 2, 1, 1 });
   PdfPCell cell;
   cell = new PdfPCell(new Phrase("Table 2"));
   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");
   return table;
 }

/**
  * Creates a table; widths are set in the constructor.
  *
  * @return a PdfPTable
  * @throws DocumentException
  */
 public static PdfPTable createTable3() throws DocumentException {
   PdfPTable table = new PdfPTable(new float[] { 2, 1, 1 });
   table.setWidthPercentage(55.067f);
   PdfPCell cell;
   cell = new PdfPCell(new Phrase("Table 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");
   return table;
 }

/**
  * Creates a table; widths are set with special setWidthPercentage() method.
  *
  * @return a PdfPTable
  * @throws DocumentException
  */
 public static PdfPTable createTable4() throws DocumentException {
   PdfPTable table = new PdfPTable(3);
   Rectangle rect = new Rectangle(523, 770);
   table.setWidthPercentage(new float[] { 144, 72, 72 }, rect);
   PdfPCell cell;
   cell = new PdfPCell(new Phrase("Table 4"));
   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");
   return table;
 }

/**
  * Creates a table; widths are set with setTotalWidth().
  *
  * @return a PdfPTable
  * @throws DocumentException
  */
 public static PdfPTable createTable5() throws DocumentException {
   PdfPTable table = new PdfPTable(3);
   table.setTotalWidth(new float[] { 144, 72, 72 });
   table.setLockedWidth(true);
   PdfPCell cell;
   cell = new PdfPCell(new Phrase("Table 5"));
   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");
   return table;
 }

public static PdfPTable createTable6() throws DocumentException{
   PdfPTable table = new PdfPTable(10);
   table.setTotalWidth(595);
   //table.setLockedWidth(true);

PdfPCell cell;
   cell = new PdfPCell(new Phrase("Table 6"));
   cell.setColspan(10);
   table.addCell(cell);

for (int i = 1; i < 100; i++) {
     cell = new PdfPCell(new Phrase(String.valueOf(i)));
     cell.setBackgroundColor(BaseColor.LIGHT_GRAY);
     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");
   return table;
 }

}

3.在PDF文件中添加图片，并且指定文本位置

package console.pdf;

import java.io.FileNotFoundException;
import java.io.FileOutputStream;

import com.itextpdf.text.Document;
import com.itextpdf.text.DocumentException;
import com.itextpdf.text.Image;
import com.itextpdf.text.PageSize;
import com.itextpdf.text.pdf.BaseFont;
import com.itextpdf.text.pdf.PdfContentByte;
import com.itextpdf.text.pdf.PdfWriter;

/**
* 使用iText生成PDF文件
* 在PDF文件中添加背景图片，并指定文本在PDF文件中的位置
*/
public class BackgroundImageOfPDF {

public static void main(String[] args) {
   BackgroundImageOfPDF p001 = new BackgroundImageOfPDF();

String filename = "P003.pdf";
   p001.createPDF(filename);
 }

public void createPDF(String filename) {
   // step 1
   Document document = new Document(PageSize.A4.rotate(),0,0,0,0);
   // step 2
   try {
     PdfWriter pdfwriter = PdfWriter.getInstance(document, new FileOutputStream(filename));

document.addTitle("ID.NET");
     document.addAuthor("dotuian");
     document.addSubject("This is the subject of the PDF file.");
     document.addKeywords("This is the keyword of the PDF file.");

// step 3
     document.open();
     // step 4
     Image image = Image.getInstance("bg.jpg");
     document.add(image);

PdfContentByte pdfContentByte = pdfwriter.getDirectContent();
     pdfContentByte.beginText();
     BaseFont bf = BaseFont.createFont(BaseFont.TIMES_ROMAN,BaseFont.WINANSI,BaseFont.EMBEDDED);
     pdfContentByte.setFontAndSize(bf, 12);

for (int i = 0; i <= 842; i = i + 50) {
       for (int j = 0; j <= 595; j = j + 20) {
         pdfContentByte.setTextMatrix(i, j);
         pdfContentByte.showText("(" + i + ":" + j + ")");
       }
     }

pdfContentByte.endText();

} catch (FileNotFoundException e) {
     e.printStackTrace();
   } catch (DocumentException e) {
     e.printStackTrace();
   } catch (Exception e) {
     e.printStackTrace();
   } finally {
     // step 5
     document.close();
   }
 }
}