用Java生成PDF的方法

ousyuryu 2011-10-21 11:00:35

如何用java代码生成pdf文件
求简单的方法，要求是免费的。

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轻弹浅唱 2011-11-30

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package test1;

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

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

public class HelloWorld {

public static void main(String[] args) {
// 创建一个文档对象
Document doc = new Document();
try {
// 定义输出位置并把文档对象装入输出对象中
PdfWriter.getInstance(doc, new FileOutputStream("c:/hello.pdf"));
// 打开文档对象
doc.open();
// 加入文字“Hello World”
doc.add(new Paragraph("HelloWorld"));
// 关闭文档对象，释放资源
doc.close();
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (DocumentException e) {
e.printStackTrace();
}
}
}
导入iTEXT的jar包就行了

lianjiaying 2011-10-21

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顶一个！

nanjiwubingqq 2011-10-21

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Itext插件
能生成word,PDF文件

风尘中国 2011-10-21

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你下载一下iText，http://itextpdf.com/ 将iText的jar加入到环境变量，然后下面给你一个生成PDF的具体实例





import java.awt.Color;

import java.io.FileOutputStream;



import com.itextpdf.text.*;

import com.itextpdf.text.pdf.*;



/**

 * iText5的入门学习文档，这个demo已经提供了自己想要的最为常见的实现

 * 

 * 这个文档主要学习利用itext实现创建PDF文档

 * @author http://www.coderanch.com/how-to/java/ItextExample

 *

 */



public class Demo {



    public static void main (String[] args) {



        // creation of the document with a certain size and certain margins

        // may want to use PageSize.LETTER instead

        Document document = new Document(PageSize.A4, 50, 50, 50, 50);

        try {

            // creation of the different writers

            PdfWriter writer = PdfWriter.getInstance(document, new FileOutputStream("etc/demo.pdf"));

            writer.setBoxSize("art", new Rectangle(36, 54, 559, 788));



            HeaderFooter event = new HeaderFooter();

            writer.setPageEvent(event);



            // various fonts

            BaseFont bf_helv = BaseFont.createFont(BaseFont.HELVETICA, "Cp1252", false);

            BaseFont bf_times = BaseFont.createFont(BaseFont.TIMES_ROMAN, "Cp1252", false);

            BaseFont bf_courier = BaseFont.createFont(BaseFont.COURIER, "Cp1252", false);

            BaseFont bf_symbol = BaseFont.createFont(BaseFont.SYMBOL, "Cp1252", false);



            int y_line1 = 650;

            int y_line2 = y_line1 - 50;

            int y_line3 = y_line2 - 50;



            document.open();



            PdfContentByte cb = writer.getDirectContent();

            cb.setLineWidth(0f);

            cb.moveTo(250, y_line3 - 100);

            cb.lineTo(250, y_line1 + 100);

            cb.moveTo(50, y_line1);

            cb.lineTo(400, y_line1);

            cb.moveTo(50, y_line2);

            cb.lineTo(400, y_line2);

            cb.moveTo(50, y_line3);

            cb.lineTo(400, y_line3);

            cb.stroke();

            cb.beginText();

            cb.setFontAndSize(bf_helv, 12);

            String text = "Sample text for alignment";

            cb.showTextAligned(PdfContentByte.ALIGN_CENTER, text + " Center", 250, y_line1, 0);

            cb.showTextAligned(PdfContentByte.ALIGN_RIGHT, text + " Right", 250, y_line2, 0);

            cb.showTextAligned(PdfContentByte.ALIGN_LEFT, text + " Left", 250, y_line3, 0);

            cb.endText();



            document.newPage();



            // add text in two paragraphs from top to bottom

            Paragraph par = new Paragraph("bold paragraph");

            par.getFont().setStyle(Font.BOLD);

            document.add(par);

            par = new Paragraph("italic paragraph");

            par.getFont().setStyle(Font.ITALIC);

//            par.getFont().setStyle(Font.BOLD);

            

            document.add(par);

            par = new Paragraph("underlined and strike-through paragraph");

            par.getFont().setStyle(Font.UNDERLINE | Font.STRIKETHRU);

            document.add(par);



            // demonstrate some table features

            PdfPTable table = new PdfPTable(3);

            table.setSpacingBefore(20);

            table.getDefaultCell().setPadding(5);



            PdfPCell cell = new PdfPCell(new Phrase("header"));

            cell.setPadding(5);

            cell.setColspan(3);

            table.addCell(cell);

            table.setHeaderRows(1);

            cell = new PdfPCell(new Phrase("example cell with rowspan 2 and red border"));

            cell.setPadding(5);

            cell.setRowspan(2);

            cell.setBorderColor(new BaseColor(new Color(255, 0, 0)));

            table.addCell(cell);

            table.addCell("中文");

            table.addCell("2.1");

            table.addCell("1.2");

            table.addCell("2.2");

            cell = new PdfPCell(new Phrase("align center"));

            cell.setPadding(5);

            cell.setHorizontalAlignment(Element.ALIGN_CENTER);

            table.addCell(cell);

            cell = new PdfPCell(new Phrase("rotated cell"));

            cell.setPadding(5);

            cell.setRowspan(2);

            cell.setColspan(2);

            // PdfPCell content can be rotated

            cell.setRotation(90);

            table.addCell(cell);

            cell = new PdfPCell(new Phrase("align right"));

            cell.setPadding(5);

            cell.setHorizontalAlignment(Element.ALIGN_RIGHT);

            table.addCell(cell);

            document.add(table);



            // add text at an absolute position

            cb.beginText();

            cb.setFontAndSize(bf_times, 14);

            cb.setTextMatrix(100, 300);

            cb.showText("Text at position 100, 300.");

            cb.endText();



            // rotated text at an absolute position

            PdfTemplate template = cb.createTemplate(300, 300);                

            template.beginText();

            template.setFontAndSize(bf_times, 14);

            template.showText("Rotated text at position 400, 200.");

            template.endText();



            float rotate = 90;

            float x = 400;

            float y = 200;

            float angle  = (float) (-rotate * (Math.PI / 180));

            float xScale = (float) Math.cos(angle);

            float yScale = (float) Math.cos(angle);

            float xRot   = (float) -Math.sin(angle);

            float yRot   = (float) Math.sin(angle);



            cb.addTemplate(template, xScale, xRot, yRot, yScale, x, y);



            document.close();



        } catch (Exception ex) {

            System.err.println(ex.getMessage());

        }

    }

 

    /** Inner class to add a header and a footer. */

    static class HeaderFooter extends PdfPageEventHelper {



        public void onEndPage (PdfWriter writer, Document document) {

            Rectangle rect = writer.getBoxSize("art");

            switch(writer.getPageNumber() % 2) {

            case 0:

                ColumnText.showTextAligned(writer.getDirectContent(),

                        Element.ALIGN_RIGHT, new Phrase("even header"),

                        rect.getRight(), rect.getTop(), 0);

                break;

            case 1:

                ColumnText.showTextAligned(writer.getDirectContent(),

                        Element.ALIGN_LEFT, new Phrase("odd header"),

                        rect.getLeft(), rect.getTop(), 0);

                break;

            }

            ColumnText.showTextAligned(writer.getDirectContent(),

                    Element.ALIGN_CENTER, new Phrase(String.format("page %d", writer.getPageNumber())),

                    (rect.getLeft() + rect.getRight()) / 2, rect.getBottom() - 18, 0);

        }

    }

}