Develop Reference

Merge Pdf: Error: there was an error opening this document file cannot be opened because it has no pages

I am trying to merge pdf files but getting error while opening the file. My code is :
public void merge(){
byte[] pdf1 = tobyte("hello");
byte[] pdf2 = tobyte("world");
PDFMergerUtility merger = new PDFMergerUtility();
merger.addSource(new ByteArrayInputStream(pdf1));
merger.addSource(new ByteArrayInputStream(pdf2));
merger.setDestinationFileName("final.pdf");
merger.mergeDocuments();
}
static byte[] tobyte(String message) {
PDDocument doc = new PDDocument();
ByteArrayOutputStream baos = new ByteArrayOutputStream();
doc.save(baos);
return baos.toByteArray();
}

Here is the code that works
//Loading an existing PDF document
File file1 = new File("sample1.pdf");
PDDocument doc1 = null;
try {
doc1 = PDDocument.load(file1);
} catch (IOException e1) {
e1.printStackTrace();
}
File file2 = new File("sample2.pdf");
PDDocument doc2 = null;
try {
doc2 = PDDocument.load(file2);
} catch (IOException e1) {
e1.printStackTrace();
}
//Instantiating PDFMergerUtility class
PDFMergerUtility PDFmerger = new PDFMergerUtility();
//Setting the destination file
PDFmerger.setDestinationFileName("merged.pdf");
//adding the source files
PDFmerger.addSource(file1);
PDFmerger.addSource(file2);
//Merging the two documents
try {
PDFmerger.mergeDocuments();
} catch (COSVisitorException | IOException e) {
e.printStackTrace();
}
System.out.println("Documents merged");
//Closing the documents
try {
doc1.close();
} catch (IOException e) {
e.printStackTrace();
}
try {
doc2.close();
} catch (IOException e) {
e.printStackTrace();
}

JSF Primefaces p:fileDownload file name contains UTF-8 characters

I am working on Java 8, JSF 2, Primefaces 5.1.
Conversation to PDF or Docx works, but when I am displaying file name, it just skips UTF-8 encoded letters, in my case, Lithuanian letters like ą,č,ę,ė,į,š,ų,ū
What I have tried so farm is :
<h:form enctype="multipart/form-data;charset=UTF-8">
Charset.forName("UTF-8").encode(myString)
or
byte[] bytes = templateTitle.getBytes(Charset.forName("UTF-8"));
String title = new String(bytes, Charset.forName("UTF-8"));
or
UTF-8 text is garbled when form is posted as multipart/form-data
checked some tuttorials about encoding, still, no use,
also checked this, but I just do not understand this example...
Primefaces fileDownload non-english file names corrupt
my code:
Download file as docx
public void downloadTemplateAsDocx() throws Exception {
try {
InputStream content = null;
String objID = this.actData.getMainActs().get(0).getId();
ContentStream cmisStream = folderCatalogue.getDocumentContentStream(objID);
content = cmisStream.getStream();
WordprocessingMLPackage wordMLPackage = WordprocessingMLPackage.createPackage();
AlternativeFormatInputPart afiPart = new AlternativeFormatInputPart(new PartName("/hw.html"));
afiPart.setBinaryData(content);
afiPart.setContentType(new ContentType("text/html"));
Relationship altChunkRel = wordMLPackage.getMainDocumentPart().addTargetPart(afiPart);
CTAltChunk ac = Context.getWmlObjectFactory().createCTAltChunk();
ac.setId(altChunkRel.getId());
wordMLPackage.getMainDocumentPart().addObject(ac);
wordMLPackage.getContentTypeManager().addDefaultContentType("html", "text/html");
File fileTmp = File.createTempFile("tempDocFile", "docx");
wordMLPackage.save(fileTmp);
streamedContent = new DefaultStreamedContent(new FileInputStream(fileTmp), cmisStream.getMimeType(),
templateTitle + ".docx", "UTF-8");
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (InvalidFormatException eInv) {
eInv.printStackTrace();
} catch (IOException ioEx) {
ioEx.printStackTrace();
} catch (Docx4JException docxEx) {
docxEx.printStackTrace();
}
}
code for .Pdf file download.
public void downloadTemplateAsPdf() {
try {
InputStream content = null;
String objID = this.actData.getMainActs().get(0).getId();
ContentStream cmisStream = folderCatalogue.getDocumentContentStream(objID);
content = cmisStream.getStream();
File fileTmp = File.createTempFile("tempFile", "pdf");
OutputStream fileStream = new FileOutputStream(fileTmp);
Document document = new Document();
PdfWriter writer = PdfWriter.getInstance(document, fileStream);
document.open();
XMLWorkerHelper worker = XMLWorkerHelper.getInstance();
worker.parseXHtml(writer, document, content, Charset.forName("UTF-8"));
document.close();
fileStream.close();
streamedContent = new DefaultStreamedContent(new FileInputStream(fileTmp), cmisStream.getMimeType(),
templateTitle + ".pdf");
} catch (FileNotFoundException e) {
e.printStackTrace();
System.out.println("File was not found");
} catch (IOException ex) {
ex.printStackTrace();
} catch (Exception exeption) {
exeption.printStackTrace();
}
}
EDIT:
<p:fileDownload value="#{controller.streamedContent}" />
private StreamedContent streamedContent;

Solution,
String title = URLEncoder.encode(templateTitle, "UTF-8");
StringBuilder fileName = new StringBuilder(title);
if (title.contains("+")) {
for (int i = 0; i < title.length(); i++) {
if (title.charAt(i) == '+') {
fileName.setCharAt(i, ' ');
}
}
}
This Encoding works fine, just it replaces all spaces to + that's why I loop over it.

JTidy java API toConvert HTML to XHTML

I am using JTidy to convert from HTML to XHTML but I found in my XHTML file this tag .
Can i prevent it ?
this is my code
//from html to xhtml
try
{
fis = new FileInputStream(htmlFileName);
}
catch (java.io.FileNotFoundException e)
{
System.out.println("File not found: " + htmlFileName);
}
Tidy tidy = new Tidy();
tidy.setShowWarnings(false);
tidy.setXmlTags(false);
tidy.setInputEncoding("UTF-8");
tidy.setOutputEncoding("UTF-8");
tidy.setXHTML(true);//
tidy.setMakeClean(true);
Document xmlDoc = tidy.parseDOM(fis, null);
try
{
tidy.pprint(xmlDoc,new FileOutputStream("c.xhtml"));
}
catch(Exception e)
{
}

I had only success, when the input is treated as XML as well. So either set xmltags to true
tidy.setXmlTags(true);
and live with the errors and warnings or do the conversion twice.
First conversion to sanitize the html (html to xhtml) and a second conversion from xhtml to xhtml with set xmltags, thus no errors and warnings occur.
String htmlFileName = "test.html";
try( InputStream in = Thread.currentThread().getContextClassLoader().getResourceAsStream(htmlFileName);
FileOutputStream fos = new FileOutputStream("tmp.xhtml");) {
Tidy tidy = new Tidy();
tidy.setShowWarnings(true);
tidy.setInputEncoding("UTF-8");
tidy.setOutputEncoding("UTF-8");
tidy.setXHTML(true);
tidy.setMakeClean(true);
Document xmlDoc = tidy.parseDOM(in, fos);
} catch (Exception e) {
e.printStackTrace();
}
try( InputStream in = new FileInputStream("tmp.xhtml");
FileOutputStream fos = new FileOutputStream("c.xhtml");) {
Tidy tidy = new Tidy();
tidy.setShowWarnings(true);
tidy.setXmlTags(true);
tidy.setInputEncoding("UTF-8");
tidy.setOutputEncoding("UTF-8");
tidy.setXHTML(true);
tidy.setMakeClean(true);
Document xmlDoc = tidy.parseDOM(in, null);
tidy.pprint(xmlDoc, fos);
} catch (Exception e) {
e.printStackTrace();
}
I used the latest jtidy version 938.

i created a function that parse the the xhtml code and remove the unwelcome tags
and to add a link to the css File "tableStyle.css"
public static String xhtmlparser(){
String Cleanline="";
try {
// the file url
FileInputStream fstream = new FileInputStream("c.xhtml");
// Use DataInputStream to read binary NOT text.
BufferedReader br = new BufferedReader(new InputStreamReader(fstream));
String strLine = null;
int linescounter=0;
while ((strLine = br.readLine()) != null) {// read every line in the file
String m=strLine.replaceAll(" ", "");
linescounter++;
if(linescounter==5)
m=m+"\n"+ "<link rel="+ "\"stylesheet\" "+"type="+ "\"text/css\" "+"href= " +"\"tableStyle.css\""+ "/>";
Cleanline+=m+"\n";
}
}
catch(IOException e){}
return Cleanline;
}
but as a performance issue is it good?
by the way it works will

You can use the following method to get xhtml from html
public static String getXHTMLFromHTML(String inputFile,
String outputFile) throws Exception {
File file = new File(inputFile);
FileOutputStream fos = null;
InputStream is = null;
try {
fos = new FileOutputStream(outputFile);
is = new FileInputStream(file);
Tidy tidy = new Tidy();
tidy.setXHTML(true);
tidy.parse(is, fos);
} catch (FileNotFoundException e) {
e.printStackTrace();
}finally{
if(fos != null){
try {
fos.close();
} catch (IOException e) {
fos = null;
}
fos = null;
}
if(is != null){
try {
is.close();
} catch (IOException e) {
is = null;
}
is = null;
}
}
return outputFile;
}

Can duplicating a pdf with PDFBox be small like with iText?

I am reading in a PDF and outputting a PDF with multiple copies of the original PDF in it. I test by doing the same thing for both PDFBox and iText. iText creates a much smaller output if I duplicate each page individually.
The question: Is there another way to do this in PDFBox that results in smaller output PDFs.
For one example input file, generating two copies to the output with both tools:
Original PDF size: 30K
PDFBox (v 1.7.1) generated PDF: 84K
iText (v 5.3.4) generated PDF: 35K
Java code for PDFBox (sorry to inflict error handling on you). Notice how it reads the input over and over and duplicates it as a whole:
PDFMergerUtility merger = new PDFMergerUtility();
PDDocument workplace = null;
try {
for (int cnt = 0; cnt < COPIES; ++cnt) {
PDDocument document = null;
InputStream stream = null;
try {
stream = new FileInputStream(new File(sourceFileName));
document = PDDocument.load(stream);
if (workplace == null) {
workplace = document;
} else {
merger.appendDocument(workplace, document);
}
} finally {
if (document != null && document != workplace) {
document.close();
}
if (stream != null) {
stream.close();
}
}
}
OutputStream out = null;
try {
out = new FileOutputStream(new File(destinationFileName));
workplace.save(out);
} finally {
if (out != null) {
out.close();
}
}
} catch (COSVisitorException e1) {
e1.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
} finally {
if (workplace != null) {
try {
workplace.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
Code to do it with iText. Notice how it loads the input file page by page and transfers each page to the output:
Document document = null;
PdfReader reader = null;
InputStream inputStream = null;
FileOutputStream outputStream = null;
try {
inputStream = new FileInputStream(new File(sourceFileName));
outputStream = new FileOutputStream(new File(destinationFileName));
document = new Document();
PdfCopy copy = new PdfSmartCopy(document, outputStream);
document.open();
reader = new PdfReader(inputStream);
// loop over the pages in that document
int pdfPageNo = reader.getNumberOfPages();
for (int page = 0; page < pdfPageNo;) {
PdfImportedPage onePage = copy.getImportedPage(reader, ++page);
// duplicate each page N times
for (int i = 0; i < COPIES; ++i) {
copy.addPage(onePage);
}
}
copy.freeReader(reader);
} catch (DocumentException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
} finally {
if (reader != null) {
reader.close();
}
if (document != null) {
document.close();
}
try {
if (inputStream != null) {
inputStream.close();
}
if (outputStream != null) {
outputStream.close();
}
} catch (IOException e) {
// do nothing
}
}
Both are surrounded by this:
public class Duplicate {
/** The original PDF file */
private static final String sourceFileName = "PDF_CI_US2CA.pdf";
/** The resulting PDF file. */
private static final String destinationFileName = "itext_output.pdf";
private static final int COPIES = 2;
public static void main(String[] args) {
...
}
}

Using the following solution, I was able to create a PDF file with many duplicate pages and have a minimal impact on storage.
PDDocument samplePdf = null;
try {
samplePdf = PDDocument.load(PDF_PATH);
PDPage page = (PDPage) samplePdf.getDocumentCatalog().getAllPages().get(0);
for(int i = 0; i < COPIES; i++) {
samplePdf.importPage(page);
}
samplePdf.save(SAVE_PATH); //$NON-NLS-1$
} catch (IOException e) {
e.printStackTrace();
} catch (COSVisitorException e) {
e.printStackTrace();
}
In my first attempt I used, samplePdf.addPage(page) but it didn't work as expected. So obviously there is a difference between the add and import functions. I'll have to check the source or documentation to see why. Anyway, this should help you devise a solution for your needs with PDFBox.

Font problems in parsing PDF to text using PDFBox,FontBox etc

I am using pdfbox api to extract text from pdf.
my program is working fine It is actually extracting text from pdf but problem font of text in pdf is in CDAC-GISTSurekh(Hindi font) and output of my program is not in same font it is in Mangla.
It is not even matching to text in pdf.
I downloaded same font i.e CDAC-GISTSurekh(Hindi font) and added it in my computer fonts but still output is formatted in Mangla.
Is there any way to change font of output while parsing.
Appreciate any help..
code i have written:
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import org.apache.pdfbox.cos.COSDocument;
import org.apache.pdfbox.pdfparser.PDFParser;
import org.apache.pdfbox.pdmodel.PDDocument;
import org.apache.pdfbox.util.PDFTextStripper;
public class PDFTextParser {
static String pdftoText(String fileName) {
PDFParser parser;
String parsedText = null;
PDFTextStripper pdfStripper = null;
PDDocument pdDoc = null;
COSDocument cosDoc = null;
File file = new File(fileName);
if (!file.isFile()) {
System.out.println("File " + fileName + " does not exist.");
return null;
}
try {
parser = new PDFParser(new FileInputStream(file));
} catch (IOException e) {
System.out.println("Unable to open PDF Parser. " + e.getMessage());
return null;
}
try {
parser.parse();
cosDoc = parser.getDocument();
pdfStripper = new PDFTextStripper();
pdDoc = new PDDocument(cosDoc);
pdfStripper.setStartPage(1);
pdfStripper.setEndPage(5);
parsedText = pdfStripper.getText(pdDoc);
} catch (Exception e) {
e.printStackTrace();
System.out.println("An exception occured in parsing the PDF Document."+ e.getMessage());
} finally {
try {
if (cosDoc != null)
cosDoc.close();
if (pdDoc != null)
pdDoc.close();
} catch (Exception e) {
e.printStackTrace();
}
}
return parsedText;
}
public static void main(String args[]){
System.out.println(pdftoText("J:\\Users\\Shantanu\\Documents\\NetBeansProjects\\Pdf\\src\\PDfman\\A0410001.pdf"));
}
}

When you create a new PdfStripper Object, user the below syntax and specify encoding for it.
PdfTextStripper pdfStripper = new PDFTextStripper(ISO-XXXX)
Where (ISO -XXX) is the character encoding used in the PDF.