Re: Convert a pdf file to an objectinpustream

From:

C-man <c00ldiabl0@gmail.com>

Newsgroups:

comp.lang.java.programmer

Date:

Thu, 2 Oct 2008 08:05:12 -0700 (PDT)

Message-ID:

<940806c6-3135-44b5-bd60-ba088fce1ea0@d45g2000hsc.googlegroups.com>

On Oct 2, 10:42 am, "Matt Humphrey" <ma...@iviz.com> wrote:

"C-man" <c00ldia...@gmail.com> wrote in message

news:71143162-7b66-4816-9433-6e1a0747d6a7@k37g2000hsf.googlegroups.com...

Hi all,

I have a pdf file on disk and I would like to print it using java. I
am using jasper print manager.
Here is the piece of code where it fails.

Object obj = null;

InputStream fis = null;
ObjectInputStream ois = null;
File file = new File( pdf.getpath() );
try {
fis = new FileInputStream( file);
ois = new ObjectInputStream( fis );
obj = ois.readObject();
} catch ( IOException e ) {
throw new DBException( "Error loading object from file : "
+ file, e );
}

pdf.getpath() will return something like d:\documents\report
\20080930.pdf.
readObject is failing and giving me a
"java.io.StreamCorruptedException: invalid stream header" error.

ObjectInputStream is specifically for deserializing Java objects--it won'=

work for PDF. What kind of object would you expect to get from it? I d=

on't

know what jasper does, but you can read the raw PDF bytes directly from t=

file input stream.

Matt Humphreyhttp://www.iviz.com/

I am using the printReport method from jasperPrintmeanager to print
the file.

    public static boolean printReport(
        String sourceFileName,
        boolean withPrintDialog
        ) throws JRException
    {
        JasperPrint jasperPrint =
(JasperPrint)JRLoader.loadObject(sourceFileName);

        return printReport(jasperPrint, withPrintDialog);
    }

And printReport calls loadObject from JRLoader.

public static Object loadObject(File file) throws JRException
    {
        if (!file.exists() || !file.isFile())
        {
            throw new JRException( new
FileNotFoundException(String.valueOf(file)) );
        }

        Object obj = null;

        FileInputStream fis = null;
        ObjectInputStream ois = null;

        try
        {
            fis = new FileInputStream(file);
            ois = new ObjectInputStream(fis);
            obj = ois.readObject();
        }
        catch (IOException e)
        {
            throw new JRException("Error loading object from file : " + file,
e);
        }
        catch (ClassNotFoundException e)
        {
            throw new JRException("Class not found when loading object from
file : " + file, e);
        }
        finally
        {
            if (ois != null)
            {
                try
                {
                    ois.close();
                }
                catch(IOException e)
                {
                }
            }

            if (fis != null)
            {
                try
                {
                    fis.close();
                }
                catch(IOException e)
                {
                }
            }
        }

        return obj;
    }

So basically, I need to convert the pdf file to jasper print. Any
idea?

ref:
http://www.koders.com/java/fidDFAEB8B8A668E411E6C5FB4D54472CABDD2A9B23.aspx=
?s=JasperPrintManager#L86
http://www.koders.com/java/fid0D0A33093791495A95D8F75069016E7ED72824C2.aspx=
?s=jrloader#L89