Error opening PDF using webdynpro

[Former Member]

Hello All,

I created a webdynpro application that opens a pdf document using the code described in the following link.

I am getting the following error:

"There was an error opening this document. The file is damaged and could not be repaired"

But I am able to open the same file using another ASP application.

Am I missing anything?

Thanks in advance.

[Former Member]

Nikhil,

I tried increasing the byte size but I am still getting the same error.

May be the code where I am reading the bytes from blob :

Blob pdfBlob = resultSet.getBlob(COLUMNNAME)

byte[] pdf = new byte[pdfBlob.length];

pdf = pdfBlob.getBytes(1,(int)pdfblob.length());

is not working. Should I read the bytes on by one using a while loop? If so how? (I am reading this from the database)

Naga - Thanks for the response. I am reading this pdf data from a database ( stored as a blob).

Thanks.

[Former Member]

Nikhil,

I tried and I am getting the following error while opening the PDF document:

"The file is damaged and could not be repaired"

Thanks.

[nikhil_bose]

seems problem with byte[] size only. Can you try small sized file or still increase array size?

ex.

new byte[6500000]

lets try and reply status

nikhil

[Former Member]

Hi,

Use this

FileInputStream in = new FileInputStream(new File(resourcePath));
ByteArrayOutputStream out = new ByteArrayOutputStream();
int i;
byte[] bytes = new byte[in.available()];
while ((i= in.read( bytes)) != -1){
 out.write(bytes, 0, i);
}
in.close();

Regards,

Naga

[nikhil_bose]

did you try what i suggested? I think in dynpro whole binary is not cached.

Please try changing the byte[] size to blob size and reply me what error you are getting.

nikhil

[Former Member]

Nikhil and Vinod,

Thanks for your help. There is nothing wrong with the PDF, I can open the same file using an ASP application without any problems. The only difference I observed between the ASP application and the webdynpro application is that, in the ASP application, the pdf file is opening directly in the browser while in the webdynpro application it is opening in Adobe. Would this make any difference?

Thanks again for your help.

[Former Member]

Nikhil and Vinod,

Thanks for your response. I used this code but it is not working. I am still getting the same error.

In my application, I am not reading the pdf from a file. Instead, it is stored in the database as a blob. I am reading the data using the following code:

Blob pdfBlob = resultSet.getBlob(COLUMNNAME)

byte[] pdf = new byte[1024]

pdf = pdfBlob.getBytes(1,(int)blob.length());

I am storing this value in a context and then displaying it as a pdf. I am using the following code to get bytes

byte[] pdfBytes = wdContext.currentElement().getBLOB(); (BLOB - name of the context attribute where bytes are stored)

and using the following code to open the pdf document (as suggested)

IWDResource pdfResource = WDResourceFactory.createResource(pdfBytes,"test.pdf",WDWebResourceType.PDF);

* *

* wdComponentAPI.getWindowManager().createNonModalExternalWindow(pdfResource.getUrl(0),"test.pdf").show();*

Am I missing anything here?

How can I force the pdf document to open in a browser window instead of Adobe?

Thanks in advance.

[Former Member]

Please verify that the PDF file is not corrupted while storing to Database. The Error that is displaying is due to teh missing part in PDF file. I don't see any error in code.

Please go through the first sentence and check the part.

Regards

Vinod V

[nikhil_bose]

try this code

Blob pdfBlob = resultSet.getBlob(COLUMNNAME)

byte[] pdf = new byte[pdfBlob.length];
pdf = pdfBlob.getBytes(1,(int)blob.length());

once you get byte[] you can pretty well go for constructing a cached web resource from it thus opening in browser.

refer the code below

resource = WDResourceFactory.createCachedResource(pdf,"Name",WDWebResourceType.PDF);
IWDWindow window = wdComponentAPI.getWindowManager().createNonModalExternalWindow(resource.getUrl(0),
"Name");
window.show();

nikhil

[Former Member]

Shilaja,

This will open the PDF file in server in to your browser application.

Specify the location of the file in Path.

try{
InputStream stream = new FileInputStream(Path);
IWDResource resource = resource = WDResourceFactory.createResource( stream, "test.pdf", WDWebResourceType.pdf, true);
stream.close();
wdComponentAPI.getWindowManager().createNonModalExternalWindow( resource.getUrl( 0), "test.pdf").show();
}catch( Exception e){ e.printStackTrace();}

Modify the code as follows to read file

 FileInputStream in = new FileInputStream(new File(resourcePath));
 ByteArrayOutputStream out = new ByteArrayOutputStream();
   int len;
byte[] bytes = new byte[1024];
	while ((len = in.read( bytes)) != -1)
	{
	   out.write(bytes, 0, len);
	}
    in.close();
   

regards

Vinod

Edited by: Vinod V on Jul 5, 2008 10:50 AM

[nikhil_bose]

try giving more length to byte array like

byte[] part = new byte[30 * 1024];

nikhil

Edited by: Nikhil ßos on Jul 5, 2008 11:09 AM