Java开源工具iText生成PDF简单实例

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();    }  }      }

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;  }    }

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();    }  }}