我需要从PDF文件中编辑特定页面,我必须将该页面仅保存为单独的PDF文件。我已成功完成这项工作。输入文件是字母大小的页面。但现在我需要的是将编辑过的页面保存为A4大小。谁能帮我。我在等待回复。
以下是我的代码。
import java.awt.Color;
import java.io.FileOutputStream;
import java.io.IOException;
import com.lowagie.text.Chunk;
import com.lowagie.text.Document;
import com.lowagie.text.DocumentException;
import com.lowagie.text.Element;
import com.lowagie.text.Font;
import com.lowagie.text.Paragraph;
import com.lowagie.text.pdf.ColumnText;
import com.lowagie.text.pdf.PdfContentByte;
import com.lowagie.text.pdf.PdfReader;
import com.lowagie.text.pdf.PdfStamper;
public class pdfEdit {
private static String INPUTFILE = "./pdf/eng.pdf";
private static String OUTPUTFILE = "./pdf/output.pdf";
private static String footerRight = "Web content and services";
private static String footerLeft = "All Rigths Reserved";
private static Document document;
public static void main(String[] args) throws IOException, DocumentException {
document = new Document();
document.open();
PdfReader reader = new PdfReader(INPUTFILE);
PdfStamper stamper = new PdfStamper(reader, new FileOutputStream(OUTPUTFILE));
int editingPage = 3;
PdfContentByte cb = stamper.getOverContent(editingPage);
cb.rectangle(10, 10, 550, 30);
cb.setRGBColorFill(255, 255, 255);
cb.fill();
PdfContentByte cByte = stamper.getOverContent(editingPage);
editFooterText(cByte);
reader.selectPages(Integer.toString(editingPage));
stamper.close();
document.close();
}
private static void editFooterText(PdfContentByte cByte) throws DocumentException {
Font footerFont = new Font(Font.HELVETICA, 5f, Font.NORMAL, Color.BLACK);
ColumnText cTextLeft = new ColumnText(cByte);
Paragraph leftPara = new Paragraph();
cTextLeft.setAlignment(Element.ALIGN_LEFT);
cTextLeft.setSimpleColumn(document.left(), 10, 500, document.bottom());
Chunk strFooterLeft = new Chunk(footerLeft, footerFont);
leftPara.add(strFooterLeft);
cTextLeft.addElement(leftPara);
cTextLeft.go();
ColumnText cTextRight = new ColumnText(cByte);
cTextRight.setSimpleColumn(document.left(), 10, 430, document.bottom());
Paragraph Rightpara = new Paragraph();
Chunk strfooterRight = new Chunk(footerRight, footerFont);
Rightpara.setAlignment(Element.ALIGN_RIGHT);
Rightpara.add(strfooterRight);
cTextRight.addElement(Rightpara);
cTextRight.go();
}
}
答案 0 :(得分:1)
尝试:reader.getPageN(Integer.toString(editingPage)).put(PdfName.MEDIABOX, new PdfRectangle(612,842));
答案 1 :(得分:0)
private static void createPDFFile() throws FileNotFoundException {
OutputStream outputStream = new FileOutputStream("./A4SizePdf.pdf");
Document document = new Document(PageSize.A4, 40, 40, 40, 40);
try {
PdfWriter writer = PdfWriter.getInstance(document, outputStream);
PdfReader reader = new PdfReader(./InputPdf.pdf);
reader.setViewerPreferences(editedPageNo);
PdfImportedPage page = writer.getImportedPage(reader, 1);
document.open();
PdfContentByte cb = writer.getDirectContent();
cb.addTemplate(page, 1.4f, 0, 0, 1.19f, -13, 7);
document.close();
outputStream.close();
setFooter();
} catch (Exception e) {
e.printStackTrace();
} finally {
if (document.isOpen())
document.close();
try {
if (outputStream != null)
outputStream.close();
} catch (IOException ioe) {
ioe.printStackTrace();
}
}
}