Right now i use iText to generate a pdf automatically.
And my problem is that when the content is really very large, i need to calculate the content's height and width, and then add new page...
this is really very inconvinent.
so I wonder whether or not there is a method like:
Document.add("a very very large article");
and after this , it will auto generate a pdf file ????
Thanks in advance !
The following creates a 9 page pdf without having to calculate height and width.
import java.io.FileOutputStream;
import java.io.IOException;
import com.lowagie.text.Document;
import com.lowagie.text.DocumentException;
import com.lowagie.text.Paragraph;
import com.lowagie.text.pdf.PdfWriter;
public class HelloWorld {
public static void main(String[] args) {
Document document = new Document();
try {
PdfWriter.getInstance(document,
new FileOutputStream("HelloWorld.pdf"));
document.open();
String text = "";
for (int i = 0; i < 10000; i++) {
text += "test";
}
document.add(new Paragraph(text));
} catch (DocumentException e) {
System.err.println(e.getMessage());
} catch (IOException ex) {
System.err.println(ex.getMessage());
}
document.close();
}
}
a new page will be generated automaticly, when the content of the current page is full.
Related
I am trying to export an HTML page into a PDF using Flying Saucer. For some reason, the pages have a large white space after the header (id = "divTemplateHeaderPage1") divisions.
The jsFiddle link to my HTML code that is being used by PDF renderer: https://jsfiddle.net/Sparks245/uhxqdta6/.
Below is the Java code used for rendering the PDF (Test.html is the same HTML code in the fiddle) and rendering only one page.
import java.io.IOException;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.json.HTTP;
import org.json.JSONException;
import org.json.*;
import org.json.simple.JSONArray;
import org.json.JSONObject;
import org.json.simple.parser.JSONParser;
import org.json.simple.parser.ParseException;
import org.json.simple.parser.*;
import org.xhtmlrenderer.pdf.ITextRenderer;
import com.lowagie.text.DocumentException;
import com.lowagie.text.List;
import com.sun.xml.internal.bind.v2.runtime.unmarshaller.XsiNilLoader.Array;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileOutputStream;
import java.io.FileReader;
import java.io.IOException;
import java.io.OutputStream;
#WebServlet("/PLPDFExport")
public class PLPDFExport extends HttpServlet
{
//Option for Serialization
private static final long serialVersionUID = 1L;
public PLPDFExport()
{
super();
}
//Get method
protected void doGet(HttpServletRequest request,
HttpServletResponse response)
throws ServletException,
IOException
{
}
//Post method
protected void doPost(HttpServletRequest request,
HttpServletResponse response)
throws ServletException,
IOException
{
StringBuffer jb = new StringBuffer();
String line = null;
int Pages;
String[] newArray = null;
try
{
BufferedReader reader = request.getReader();
while ((line = reader.readLine()) != null)
{ jb.append(line);
}
} catch (Exception e) { /*report an error*/ }
try
{
JSONObject obj = new JSONObject(jb.toString());
Pages = obj.getInt("Pages");
newArray = new String[1];
for(int cnt = 1; cnt <= 1; cnt++)
{
StringBuffer buf = new StringBuffer();
String base = "C:/Users/Sparks/Desktop/";
buf.append(readFile(base + "Test.html"));
newArray[0] = buf.toString();
}
}
catch (JSONException e)
{
// crash and burn
throw new IOException("Error parsing JSON request string");
}
//Get the parameters
OutputStream os = null;
try {
final File outputFile = File.createTempFile("FlyingSacuer.PDFRenderToMultiplePages", ".pdf");
os = new FileOutputStream(outputFile);
ITextRenderer renderer = new ITextRenderer();
// we need to create the target PDF
// we'll create one page per input string, but we call layout for the first
renderer.setScaleToFit(true);
renderer.isScaleToFit();
renderer.setDocumentFromString(newArray[0]);
renderer.layout();
try {
renderer.createPDF(os, false);
} catch (DocumentException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
// each page after the first we add using layout() followed by writeNextDocument()
for (int i = 1; i < newArray.length; i++) {
renderer.setScaleToFit(true);
renderer.isScaleToFit();
renderer.setDocumentFromString(newArray[i]);
renderer.layout();
try {
renderer.writeNextDocument();
} catch (DocumentException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
// complete the PDF
renderer.finishPDF();
System.out.println("PDF Downloaded to " + outputFile );
System.out.println(newArray[0]);
}
finally {
if (os != null) {
try {
os.close();
} catch (IOException e) { /*ignore*/ }
}
}
//Return
response.setContentType("application/json");
response.setCharacterEncoding("UTF-8");
response.getWriter().write("File Uploaded");
}
String readFile(String fileName) throws IOException {
BufferedReader br = new BufferedReader(new FileReader(fileName));
try {
StringBuilder sb = new StringBuilder();
String line = br.readLine();
while (line != null) {
sb.append(line);
sb.append("\n");
line = br.readLine();
}
return sb.toString();
} finally {
br.close();
}
}
}
The link for exported PDF: https://drive.google.com/file/d/13CmlJK0ZDLolt7C3yLN2k4uJqV3TX-4B/view?usp=sharing
I tried adding css properties like page-break-inside: avoid to the header divisions but it didn't work. Also I tried adding absolute positions and top margins to the body division (id = "divTemplateBodyPage1") just below the header div, but the white space continues to exist.
Any suggestions would be helpful.
Please take a look at the metadata of your PDF:
You are using an old third party tool that is not endorsed by iText Group, and that uses iText 2.1.7, a version of iText dating from 2009 that should no longer be used.
It would probably have been OK to complain and to write "My code isn't working" about 7 years ago, but if you would use the most recent version of iText, the result of converting your HTML to PDF would look like this:
I only needed a single line of code to get this result:
HtmlConverter.convertToPdf(new File(src), new File(dest));
In this line src is the path the the source HTML and dest is the path to the resulting PDF.
I only had to apply one minor change to your HTML. I change the #page properties like this:
#page {
size: 27cm 38cm;
margin: 0.2cm;
}
If I hadn't changed this part of the CSS, the page size would have been A4, and in that case, not all the content would have fitted the page. I also added a small margin because I didn't like the fact that the border was sticking to close to the sides of the page.
Morale: don't use old versions of libraries! Download the latest version of iText and the pdfHTML add-on. You need iText 7 core and the pdfHTML add-on. You might also want to read the HTML to PDF tutorial.
I am using zxing api for creating barcode. But while creating i am not able to write barcode content as label below the barcode.
output --
output required --
The code to generate these barcode are as such -
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import com.google.zxing.BarcodeFormat;
import com.google.zxing.MultiFormatWriter;
import com.google.zxing.WriterException;
import com.google.zxing.client.j2se.MatrixToImageWriter;
import com.google.zxing.common.BitMatrix;
public class BarcodeTesting {
private static void wrtieToStream(BitMatrix bitMatrix) {
try {
MatrixToImageWriter.writeToStream(bitMatrix, "png", new FileOutputStream(new File("hello" + ".png")));
System.out.println( " Barcode Generated.");
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
private BitMatrix generateBitMatrix(String content, BarcodeFormat format, int width, int height) {
MultiFormatWriter writer = new MultiFormatWriter();
BitMatrix bitMatrix = null;
try {
bitMatrix = writer.encode(content, format, width, height);
} catch (WriterException e) {
e.printStackTrace();
}
return bitMatrix;
}
public static void main(String[] args) {
BarcodeTesting obj = new BarcodeTesting();
BarcodeFormat barcodeFormat = BarcodeFormat.QR_CODE;
BitMatrix bitMatrix = obj.generateBitMatrix("MY QR Code 123", barcodeFormat, 24, 24);
// String formatString = format.toString();
wrtieToStream(bitMatrix);
}
}
As the QRCode specifiaction does not provide an option to include the content into the image I do not think zxing or any other barcode generator does offer this functionality. You will have to add the text to the image on your own. Be aware that you have to leave enough white space around the QRCode. Your above image doesn't have enough whitespace at the bottom.
#tobltobs. I search a lot but didn't find any way in zxing api to do as i am expecting . So as per your suggestion i created a image in which i pasted my barcode after generating & reading it.Then i write barcode content as String below that image .
Barcode4j can be used to embed text along with the bar code.
This link has working java code.
I am triing to make an automatization program in JAVA.
I have a sample doc file. I need to fill the blank parts or the <> "signed" parts from database,
than create pdf files.
I tried to read the word :
import java.io.*;
import org.apache.poi.hwpf.HWPFDocument;
import org.apache.poi.hwpf.extractor.WordExtractor;
public class ReadDocFile {
public static void main(String[] args) {
File file = null;
WordExtractor extractor = null ;
try {
file = new File("c:\\New.doc");
FileInputStream fis=new FileInputStream(file.getAbsolutePath());
HWPFDocument document=new HWPFDocument(fis);
extractor = new WordExtractor(document);
String [] fileData = extractor.getParagraphText();
for(int i=0;i<fileData.length;i++){
if(fileData[i] != null)
System.out.println(fileData[i]);
}
}
catch(Exception exep){}
}
}
but this attemption is bad in many way cause i only need to write some of the parts, and this method make a single test from the doc.
So can you advice me some api that write in a word doc eg: after Name : or in the 5 row write this:
And when it finish with the word it should generate a pdf and do it again ...
I am looking a solution wich i found xssfworkbook with some extra function ( generate pdf of the doc ).
Or read the sample pdf and fill with datas and save to a new pdf.
Thx
Use Itext (http://sourceforge.net/projects/itext/)
and Apache POI Project http://poi.apache.org/index.html
A sample code :
import java.io.BufferedInputStream;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import org.apache.poi.hwpf.extractor.WordExtractor;
import com.itextpdf.text.Document;
import com.itextpdf.text.DocumentException;
import com.itextpdf.text.Paragraph;
import com.itextpdf.text.pdf.PdfWriter;
public static void main(String[] args) {
String pdfPath = "C:/";
String pdfDocPath = null;
try {
InputStream is = new BufferedInputStream(new FileInputStream("C:/Test.doc"));
WordExtractor wd = new WordExtractor(is);
String text = wd.getText();
/* FOR DOCX
// IMPORT
import org.apache.poi.openxml4j.exceptions.InvalidFormatException;
import org.apache.poi.xwpf.extractor.XWPFWordExtractor;
import org.apache.poi.xwpf.usermodel.XWPFDocument;
// CODE
XWPFDocument hdoc = new XWPFDocument(is);
extractor = new XWPFWordExtractor(hdoc);
String text = extractor.getText();
*/
Document document = new Document();
PdfWriter.getInstance(document, new FileOutputStream(pdfPath + "viewDoc.pdf"));
document.open();
document.add(new Paragraph(text));
document.close();
pdfDocPath = pdfPath + "viewDoc.pdf";
System.out.println("Pdf document path is" + pdfDocPath);
}
catch (FileNotFoundException e1) {
System.out.println("File does not exist.");
}
catch (IOException ioe) {
System.out.println("IO Exception");
}
catch (DocumentException e) {
e.printStackTrace();
}
}
import com.itextpdf.text.Document;
import com.itextpdf.text.Image;
import com.itextpdf.text.html.simpleparser.HTMLWorker;
import com.itextpdf.text.pdf.PdfWriter;
import com.itextpdf.text.pdf.codec.Base64.OutputStream;
import java.io.FileOutputStream;
import java.io.StringReader;
import java.net.URL;
public class myclass {
public static void main(String[] args) {
String result = "<html><body><div>(i) the recognised association shall have the approval of the Forward Markets Commission established under the Forward Contracts (Regulation) Act, 1952 (74 of 1952) in respect of trading in derivatives and shall function in accordance with the guidelines or conditions laid down by the Forward Markets Commission; </div> <body> </html>";
Document document = new Document();
OutputStream file = null;
try {
PdfWriter.getInstance(document, new FileOutputStream(
"E://Image.pdf"));
document.open();
PdfWriter.getInstance(document, file);
document.open();
#SuppressWarnings("deprecation")
HTMLWorker htmlWorker = new HTMLWorker(document);
htmlWorker.parse(new StringReader(result));
String imageUrl = "http://www.taxmann.com/emailer/demo/mobileAapp/newAppDesign.jpg";
Image image2 = Image.getInstance(new URL(imageUrl));
document.add(image2);
document.close();
file.flush();
document.close();
} catch (Exception e) {
e.printStackTrace();
}
}
}
I am trying to save image and text in pdf file. When we set Either text or image then it's working fine, simultaneously am not able to save image and text Both in pdf. How will I save image and text both in Pdf? I am Using iText.
May the problem is Wrong import for Outputstream and file is Always null . You never assigned any O/P strream.
Try this
import java.io.FileOutputStream;
import java.io.OutputStream;
import java.io.StringReader;
import java.net.URL;
import com.itextpdf.text.Document;
import com.itextpdf.text.Image;
import com.itextpdf.text.html.simpleparser.HTMLWorker;
import com.itextpdf.text.pdf.PdfWriter;
public class ItextExample {
#SuppressWarnings("deprecation")
public static void main(String[] args) {
String result = "<html><body><div>(i) the recognised association shall have the approval of the Forward Markets Commission established under the Forward Contracts (Regulation) Act, 1952 (74 of 1952) in respect of trading in derivatives and shall function in accordance with the guidelines or conditions laid down by the Forward Markets Commission; </div> <body> </html>";
Document document = new Document();
OutputStream file = null;
try {
file = new FileOutputStream("E://Image1.pdf");
PdfWriter.getInstance(document,file);
document.open();
HTMLWorker htmlWorker = new HTMLWorker(document);
htmlWorker.parse(new StringReader(result));
String imageUrl = "http://www.taxmann.com/emailer/demo/mobileAapp/newAppDesign.jpg";
Image image2 = Image.getInstance(new URL(imageUrl));
document.add(image2);
} catch (Exception e) {
e.printStackTrace();
}finally {
try {
document.close();
file.flush();
}catch(Exception e) {
e.printStackTrace();
}
}
}
}
I am currently using PDFBox and reading from within a.pdf which is found in folder 1
I first list all the Pdf files found within the folder.
Then I check the number of pages that each file has.
Now i want to go to the very end of the file below the footer to add an image that can be recognised by the printer to staple the pages since it will realise it has reached end of file.
I have arrived till getting list of files and the number of pages.
What command do i use to go to the end of the last page and write there.
Should i transform the .pdf file into text or
Should i be able to use PDPageContentStream
This is the code I am currently using I am trying to test and see if a AAA string will be insterted into my last page of the pdf file. the project is executing with no errors but for some reason it is not being inserted into the pdf.
package pdfviewer;
import java.io.*;
import java.util.*;
import java.util.List;
import java.io.IOException;
import org.apache.pdfbox.PDFReader;
import org.apache.pdfbox.pdmodel.PDDocument;
import org.apache.pdfbox.pdmodel.edit.PDPageContentStream;
import org.apache.pdfbox.pdmodel.PDPage;
import org.apache.pdfbox.pdmodel.common.PDRectangle;
import org.apache.pdfbox.pdmodel.font.PDFont;
import org.apache.pdfbox.pdmodel.font.PDType1Font;
public class Main {
/**
* #param args the command line arguments
*/
public static List flist()
{
List listfile = new ArrayList();
String path = "C:/1";
String files;
File folder = new File(path);
File[] listOfFiles = folder.listFiles();
for (int i = 0; i < listOfFiles.length; i++)
{
if (listOfFiles[i].isFile())
{
files = listOfFiles[i].getName();
if (files.endsWith(".pdf") || files.endsWith(".PDF"))
{
listfile.add(listOfFiles[i]);
}
}
}
System.out.println(listfile);
return listfile;
}
public static void CheckPages(List a)
{
String dir = null;
Object[] arraydir = a.toArray(new Object[0]);
for (int i=0; i< arraydir.length; i++)
{
int pages = 0;
PDFont font = PDType1Font.HELVETICA_BOLD;
float fontSize = 12.0f;
dir = arraydir[i].toString();
System.out.println(dir);
try {
PDDocument pdoc = PDDocument.load(dir);
List allPages = pdoc.getDocumentCatalog().getAllPages();
pages = pdoc.getNumberOfPages();
System.out.println(allPages);
int f = pages;
System.out.println(pages);
PDPage page = (PDPage) allPages.get(i);
//System.out.println(page);
PDRectangle pageSize = page.findMediaBox();
float stringWidth = font.getStringWidth( "AAA" );
float centeredPosition = (pageSize.getWidth() - (stringWidth*fontSize)/1000f)/2f;
PDPageContentStream contentStream = new PDPageContentStream(pdoc,page,true,true);
//System.out.println(contentStream);
contentStream.beginText();
contentStream.setFont( font, fontSize );
contentStream.moveTextPositionByAmount( centeredPosition, 30 );
contentStream.drawString( "AAA" );
contentStream.endText();
contentStream.close();
pdoc.close();
}
catch (Exception e)
{
System.err.println("An exception occured in parsing the PDF Document."+ e.getMessage());
}
}
}
public static void main(String[] args)
{
List l = new ArrayList();
l = pdfviewer.Main.flist();
pdfviewer.Main.CheckPages(l);
}
}
Thanks for your attention
The code I was using above is correct.
The problem is that the PDF files being generated are version 1.2, that is the reason why I am not being allowed to Edit the pdf document.
Does anyone know what I should do if i'm using a version 1.2, since I can't really upgrade it.
you can look at the examples supplied with the library.
there are two files that are of interest to you:
1- AddImageToPDF.java AddImageToPDF.java on google code search
2- AddMessageToEachPage.java AddMessageToEachPage.java on google code search
the second one adds a message to every page but you can modify it to work with the last page only. according to the PDFBox user guide document, they should be found under the folder: src/main/java/org/apache/pdfbox/examples
I have added links on google code search in case you have trouble locating the files.
I have not worked with the library or tried the examples and I am quite sure you will need to modify the code a little to suit your needs for the location of the added line/image.
In any case, if this helps you and you get a working solution, you can add the solution so that others can benefit from it.
EDIT:
After seeing the code posted by the question author, I add a modification to make it work.
I allowed myself also to make few changes for clarity.
import java.io.File;
import java.io.FileFilter;
import java.util.List;
import org.apache.pdfbox.pdmodel.PDDocument;
import org.apache.pdfbox.pdmodel.edit.PDPageContentStream;
import org.apache.pdfbox.pdmodel.PDPage;
import org.apache.pdfbox.pdmodel.common.PDRectangle;
import org.apache.pdfbox.pdmodel.font.PDFont;
import org.apache.pdfbox.pdmodel.font.PDType1Font;
public class Main {
/**
* #param args the command line arguments
*/
public static final FileFilter pdfFileFilter = new FileFilter() {
public boolean accept(File file) {
return file.isFile() && file.getName().toLowerCase().endsWith(".pdf");
}
};
public static void closeQuietly(PDDocument doc) {
if (doc != null) {
try {
doc.close();
} catch (Exception exception) {
//do something here if you wish like logging
}
}
}
public static void CheckPages(File[] sourcePdfFiles,String textToInsert, String prefix) {
for (File sourcePdfFile : sourcePdfFiles) {
PDFont font = PDType1Font.HELVETICA_BOLD;
float fontSize = 12.0f;
PDDocument pdoc = null;
try {
pdoc = PDDocument.load(sourcePdfFile);
List allPages = pdoc.getDocumentCatalog().getAllPages();
PDPage lastPage = (PDPage) allPages.get(allPages.size() - 1);
PDRectangle pageSize = lastPage.findMediaBox();
float stringWidth = font.getStringWidth(textToInsert);
float centeredPosition = (pageSize.getWidth() - (stringWidth * fontSize) / 1000f) / 2f;
PDPageContentStream contentStream = new PDPageContentStream(pdoc, lastPage, true, true);
contentStream.beginText();
contentStream.setFont(font, fontSize);
contentStream.moveTextPositionByAmount(centeredPosition, 30);
contentStream.drawString(textToInsert);
contentStream.endText();
contentStream.close();
File resultFile = new File(sourcePdfFile.getParentFile(), prefix + sourcePdfFile.getName());
pdoc.save(resultFile.getAbsolutePath());
} catch (Exception e) {
System.err.println("An exception occured in parsing the PDF Document." + e.getMessage());
} finally {
closeQuietly(pdoc);
}
}
}
public static void main(String[] args) {
File pdfFilesFolder = new File("C:\\1");
File[] pdfFiles = pdfFilesFolder.listFiles(pdfFileFilter);
//when a file is processed, the result will be saved in a new file having the location of the source file
//and the same name of source file prefixed with this
String modifiedFilePrefix = "modified-";
CheckPages(pdfFiles,"AAA", modifiedFilePrefix);
}
}