itext "Exception in thread "main" java.io.FileNotFoundException: value"

[Branko Kranjcevic]

Hello. I'm new to java and itext and I'm trying to make pdf with digital signature. The code below makes new pdf (ORIGINAL) but then i get error for file not found. Any idea? thanks a lot and sorry for the long post.

/*
 * This class is part of the book "iText in Action - 2nd Edition"
 * written by Bruno Lowagie (ISBN: 9781935182610)
 * For more info, go to: http://itextpdf.com/examples/
 * This example only works with the AGPL version of iText.
 */

package signatures;

import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.security.GeneralSecurityException;
import java.security.KeyStore;
import java.security.PrivateKey;
import java.security.Security;
import java.security.cert.Certificate;
import java.util.Properties;

import org.bouncycastle.jce.provider.BouncyCastleProvider;

import com.itextpdf.text.BaseColor;
import com.itextpdf.text.Document;
import com.itextpdf.text.DocumentException;
import com.itextpdf.text.Image;
import com.itextpdf.text.Paragraph;
import com.itextpdf.text.Rectangle;
import com.itextpdf.text.pdf.PdfAnnotation;
import com.itextpdf.text.pdf.PdfAppearance;
import com.itextpdf.text.pdf.PdfFormField;
import com.itextpdf.text.pdf.PdfReader;
import com.itextpdf.text.pdf.PdfSignatureAppearance;
import com.itextpdf.text.pdf.PdfStamper;
import com.itextpdf.text.pdf.PdfWriter;

public class Signatures {

    /** The resulting PDF */
    public static String ORIGINAL = "C:/Program files/iText/book/results/part3/chapter12/unsigned1.pdf";
    /** The resulting PDF */
    public static String SIGNED1 = "C:/Program files/iText/book/results/part3/chapter12/signed_1.pdf";
    /** The resulting PDF */
    public static String SIGNED2 = "C:/Program files/iText/book/results/part3/chapter12/signed_2.pdf";

    /** One of the resources. */
    public static final String RESOURCE
        = "C:/Program files/iText/book/resources/img/1t3xt.gif";

    /**
     * A properties file that is PRIVATE.
     * You should make your own properties file and adapt this line.
     */
    public static String PATH = "C:/Program files/iText/book/results/part3/chapter12/key.properties";
    /** Some properties used when signing. */
    public static Properties properties = new Properties();
    
    /**
     * Creates a PDF document.
     * @param filename the path to the new PDF document
     * @throws DocumentException 
     * @throws IOException 
     */
    public void createPdf(String filename) throws IOException, DocumentException {
    	// step 1
        Document document = new Document();
        // step 2
        PdfWriter writer = PdfWriter.getInstance(document, new FileOutputStream(filename));
        // step 3
        document.open();
        // step 4
        document.add(new Paragraph("Hello World!"));
        PdfFormField field = PdfFormField.createSignature(writer);
        field.setWidget(new Rectangle(72, 732, 144, 780), PdfAnnotation.HIGHLIGHT_INVERT);
        field.setFieldName("mySig");
        field.setFlags(PdfAnnotation.FLAGS_PRINT);
        field.setPage();
        field.setMKBorderColor(BaseColor.BLACK);
        field.setMKBackgroundColor(BaseColor.WHITE);
        PdfAppearance tp = PdfAppearance.createAppearance(writer, 72, 48);
        tp.rectangle(0.5f, 0.5f, 71.5f, 47.5f);
        tp.stroke();
        field.setAppearance(PdfAnnotation.APPEARANCE_NORMAL, tp);
        writer.addAnnotation(field);
        // step 5
        document.close();
    }

    /**
     * Manipulates a PDF file src with the file dest as result
     * @param src the original PDF
     * @param dest the resulting PDF
     * @throws IOException
     * @throws DocumentException
     * @throws GeneralSecurityException 
     */
    public void signPdf(String src, String dest, boolean certified, boolean graphic)
        throws IOException, DocumentException, GeneralSecurityException {
        // private key and certificate
    	String path = properties.getProperty("PRIVATE");
        String keystore_password = properties.getProperty("PASSWORD");
        String key_password = properties.getProperty("PASSWORD");
        KeyStore ks = KeyStore.getInstance("pkcs12", "BC");
        ks.load(new FileInputStream(path), keystore_password.toCharArray());
        String alias = (String)ks.aliases().nextElement();
        PrivateKey pk = (PrivateKey)ks.getKey(alias, key_password.toCharArray());
        Certificate[] chain = ks.getCertificateChain(alias);
        // reader and stamper
        PdfReader reader = new PdfReader(ORIGINAL);
        PdfStamper stamper = PdfStamper.createSignature(reader, new FileOutputStream(dest), '\0');
        PdfSignatureAppearance appearance = stamper.getSignatureAppearance();
        appearance.setVisibleSignature("mySig");
        appearance.setReason("It's personal.");
        appearance.setLocation("Foobar");
        appearance.setCrypto(pk, chain, null, PdfSignatureAppearance.WINCER_SIGNED);
        if (certified) {
                appearance.setCertificationLevel(PdfSignatureAppearance.CERTIFIED_NO_CHANGES_ALLOWED);
            }
        if (graphic) {
            appearance.setAcro6Layers(true);
            appearance.setSignatureGraphic(Image.getInstance(RESOURCE));
            appearance.setRenderingMode(PdfSignatureAppearance.RenderingMode.GRAPHIC);
        }
        stamper.close();
    }
    
    /**
     * Main method.
     *
     * @param    args    no arguments needed
     * @throws DocumentException 
     * @throws IOException
     * @throws GeneralSecurityException 
     */
    public static void main(String[] args)
        throws IOException, DocumentException, GeneralSecurityException {
        Security.addProvider(new BouncyCastleProvider());
        properties.load(new FileInputStream(PATH));
        Signatures signatures = new Signatures();
        signatures.createPdf(ORIGINAL);
        signatures.signPdf(ORIGINAL, SIGNED1, false, false);
        signatures.signPdf(ORIGINAL, SIGNED2, true, true);
    }
}

this is error

Exception in thread "main" java.io.FileNotFoundException: value (The system cannot find the file specified)
	at java.io.FileInputStream.open(Native Method)
	at java.io.FileInputStream.<init>(FileInputStream.java:138)
	at java.io.FileInputStream.<init>(FileInputStream.java:97)
	at signatures.Signatures.signPdf(Signatures.java:103)
	at signatures.Signatures.main(Signatures.java:140)
Java Result: 1

[Joanne Neal]

On line 103 you try to open a file that has the name stored in the path variable.
The path variable is set on line 99 and is the value set to the PRIVATE property.
The value being assigned to the path variable is 'value'. You can see this is the exception message.
Exception in thread "main" java.io.FileNotFoundException: value

So my guess would be that your properties are not set up properly. have a look in
C:/Program files/iText/book/results/part3/chapter12/key.properties
to see what the PRIVATE key's value is.

[Branko Kranjcevic]

Thanks for your time. key.properties is the file that i have to make by myself. It's made in notepad and it has this values:
#Favorite Things
#Tue Jan 22 13:50:59 CET 2013
keystorepassword=****
keypassword=****
value=PRIVATE
path=C\:/Program files/iText/book/results/part3/chapter12

i have made it from this code:

package writeproperies;

import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.Properties;

public class Writeproperies {
	public static void main(String[] args) {
		try {
			Properties properies = new Properties();
			properies.setProperty("keystorepassword", "***");
			properies.setProperty("keypassword", "****");
                        properies.setProperty("path", "C:/Program files/iText/book/results/part3/chapter12");
                        properies.setProperty("value", "PRIVATE");
			

			File file = new File("key.properties");
			FileOutputStream fileOut = new FileOutputStream(file);
			properies.store(fileOut, "Favorite Things");
			fileOut.close();
		} catch (FileNotFoundException e) {
			e.printStackTrace();
		} catch (IOException e) {
			e.printStackTrace();
		}

in itext book author wrote for key.properties file: "The path to my personal key store and certificate, along with the
corresponding passwords that are used in the examples, are stored in a properties
file on my OS. For obvious reasons, this file is not distributed with
the examples."

Any idea on this?

[Joanne Neal]

Branko Kranjcevic wrote:Thanks for your time. key.properties is the file that i have to make by myself. It's made in notepad and it has this values:
#Favorite Things
#Tue Jan 22 13:50:59 CET 2013
keystorepassword=****
keypassword=****
value=PRIVATE
path=C\:/Program files/iText/book/results/part3/chapter12

Are you sure about the line I've highlighted ? The results you showed earlier would suggest it is actually
PRIVATE=value

But that's irrelevent, because it would appear on line 99 of your code you are reading the wrong value from the properties file.
I think you should probably be reading the 'path' value.

[Branko Kranjcevic]

Yes I've changed it to PRIVATE=value but the error is still on ..

[Joanne Neal]

Branko Kranjcevic wrote:Yes I've changed it to PRIVATE=value but the error is still on ..

As I said, that is irrelevant. The problem is that you are getting the value of the wrong property at line 99.

[Branko Kranjcevic]

Joanne Neal wrote:

Branko Kranjcevic wrote:Yes I've changed it to PRIVATE=value but the error is still on ..

As I said, that is irrelevant. The problem is that you are getting the value of the wrong property at line 99.

Any suggestions how to fix it?

[Ulf Dittmer]

At present you're getting the value of property "PRIVATE". But the value of that property isn't the path (which is what you want to retrieve). What do you need to do to fix that?

[Branko Kranjcevic]

Ulf Dittmer wrote:At present you're getting the value of property "PRIVATE". But the value of that property isn't the path (which is what you want to retrieve). What do you need to do to fix that?

change "private" to path?

[Tony Docherty]

Rather than guess think about it logically.
1. The variable 'path' is used to open a FileInputStream so it should contain the path to the file you want to open.
2. Which property in your properties file contains the path to the file to open?
3. Are you setting the 'path' variable to this properties value?

[Joanne Neal]

Branko Kranjcevic wrote:

Ulf Dittmer wrote:At present you're getting the value of property "PRIVATE". But the value of that property isn't the path (which is what you want to retrieve). What do you need to do to fix that?

change "private" to path?

Don't just guess. Experiment. What happened when you tried that ?

Edit: Or you could think about it logically Both are good ways of learning.

[Branko Kranjcevic]

Thank you for suggestions. I've changed what you think should be changed and i get error on:
Exception in thread "main" java.lang.NullPointerException

[Ulf Dittmer]

In which line? Which object is null? Post the full stack trace.

[Branko Kranjcevic]

Ulf Dittmer wrote:In which line? Which object is null? Post the full stack trace.

here it is:

Exception in thread "main" java.lang.NullPointerException
	at java.io.FileInputStream.<init>(FileInputStream.java:134)
	at java.io.FileInputStream.<init>(FileInputStream.java:97)
	at signatures.Signatures.signPdf(Signatures.java:103)
	at signatures.Signatures.main(Signatures.java:140)
Java Result: 1

[Ulf Dittmer]

Ulf Dittmer wrote:In which line? Which object is null?

If you want us to help you then you need to make it as easy as possible by giving as much information as you have.

[Tony Docherty]

Print out the value of 'path' - I think you will find is it null.

Can you show the line(s) of code you changed so we can see what you have done.

[Joanne Neal]

Branko Kranjcevic wrote:Thank you for suggestions. I've changed what you think should be changed and i get error on:
Exception in thread "main" java.lang.NullPointerException

If the only thing you have changed is which property you fetch on line 99, then you need to check that the value you are getting is now correct.
Add

System.out.println(path);

after line 99 to see if it is now getting the correct value.
If it isn't then you need to work out why. Are you getting the correct property ? Does that property exist in the properties file with the correct value ?

Edit: I was a bit slow there wasn't I

[Branko Kranjcevic]

Joanne Neal wrote:

Branko Kranjcevic wrote:Thank you for suggestions. I've changed what you think should be changed and i get error on:
Exception in thread "main" java.lang.NullPointerException

If the only thing you have changed is which property you fetch on line 99, then you need to check that the value you are getting is now correct.
Add

System.out.println(path);

after line 99 to see if it is now getting the correct value.
If it isn't then you need to work out why. Are you getting the correct property ? Does that property exist in the properties file with the correct value ?

Edit: I was a bit slow there wasn't I

I have done this and i get value: null, here is the whole message :

null
Exception in thread "main" java.lang.NullPointerException
	at java.io.FileInputStream.<init>(FileInputStream.java:134)
	at java.io.FileInputStream.<init>(FileInputStream.java:97)
	at signatures.Signatures.signPdf(Signatures.java:104)
	at signatures.Signatures.main(Signatures.java:141)
Java Result: 1

I'm a bit slow, because I'm a beginner and I'm working with two codes for signing pdf. Maybe I'll post that other code that gives me error too

Edit: and when i change this line to this:

String path = properties.getProperty("path");
        System.out.println(path);

I get this message:

C:/Users/username/Documents/itext
Exception in thread "main" java.io.FileNotFoundException: C:\Users\username\Documents\itext (Access is denied)
	at java.io.FileInputStream.open(Native Method)
	at java.io.FileInputStream.<init>(FileInputStream.java:138)
	at java.io.FileInputStream.<init>(FileInputStream.java:97)
	at signatures.Signatures.signPdf(Signatures.java:104)
	at signatures.Signatures.main(Signatures.java:141)
Java Result: 1

[Joanne Neal]

Branko Kranjcevic wrote:I get this message:

C:/Users/username/Documents/itext
Exception in thread "main" java.io.FileNotFoundException: C:\Users\username\Documents\itext (Access is denied)
	at java.io.FileInputStream.open(Native Method)
	at java.io.FileInputStream.<init>(FileInputStream.java:138)
	at java.io.FileInputStream.<init>(FileInputStream.java:97)
	at signatures.Signatures.signPdf(Signatures.java:104)
	at signatures.Signatures.main(Signatures.java:141)
Java Result: 1

And did you read the error message ? What do you think it might mean ?

[Branko Kranjcevic]

I checked my permissions for files and they are all on..

[Ulf Dittmer]

Also for all directories above it, starting at the root, i.e. C: ?

[Branko Kranjcevic]

Ulf Dittmer wrote:Also for all directories above it, starting at the root, i.e. C: ?

Yes, error is still on

[Tony Docherty]

Are you sure this is a file and not a directory?
If it is a file check to make sure no other applications have locked the file.

[Branko Kranjcevic]

Found new and better code for digital signature from the same author. It works very good. But I still want this code to work too, so I will send question to the code author about this key.properties file. It's very suspicious to me. I will notice on progress.. Thank you all very much for your time and replies.