Blob to pdf

[dragon2733]

I need to read a blob from the oracle database and display it as a PDF. I have included the code I am using, however, I am getting a nullpointer exception when trying to write the blob. What am I missing? Is there a better way to do this? Thanks!

InputStream inStrm = null;
OutputStream outStrm = null;

Blob custBlob = pdfBlob.getBlob(); // get blob from db
inStrm = custBlob.getBinaryStream();
byte[] bytes = new byte[(int)custBlob.length()];

inStrm.read(bytes);

outStrm.write(bytes);

outStrm.flush();
outStrm.close();
inStrm.close();

 

[sedj]

Is the blob actually a PDF ?

Which line causes the NPE ?

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Free Java/J2EE Database Connection Pooling Software

http://www.primrose.org.uk

 

[dragon2733]

The blob is a PDFStream.
The npe occurs on outStrm.write(bytes);

 

[sedj]

So is 'outStrm' null or is 'bytes' null ?

--------------------------------------------------
Free Java/J2EE Database Connection Pooling Software

http://www.primrose.org.uk

 

[dragon2733]

bytes has a length of 40166.
outStrm is null....

 

[sedj]

so you need to create your outStrm object then ...

--------------------------------------------------
Free Java/J2EE Database Connection Pooling Software

http://www.primrose.org.uk

 

[Diancecht]

Just reading through the code you will see that you declare the OutputStream object without initializing it.

Cheers,
Dian

 

[dragon2733]

Thanks! I have been looking at it so long I don't see things that I should.