Display PDF in different window by reading Binary file in MIME folder.

[Former Member]

Hi all,

I've kept binary file in MIME folder and I'm trying to read the contents of it. and I'm trying to display contents in pdf format in separate window.

For this I was able to read the file by using FileInputStream

byte[] bytes = new byte[1000];
	try
    	{
	    	//File file = new File(WDURLGenerator.getResourcePath(wdComponentAPI.getDeployableObjectPart(),"data.bin"));
			File file = new File(WDURLGenerator.getResourcePath("test.bin"));
			FileInputStream is = new FileInputStream(file);
	    	long length = file.length();
			//Create the byte array to hold the data
			byte[] bytesA = new byte[(int)length];
			//Read in the bytes
			 
			 int offset = 0;
			 int numRead = 0;
			 while (offset < bytesA.length&& (numRead=is.read(bytesA, offset, bytesA.length-offset)) >= 0)
			 {
				 offset += numRead;
			 }
				
				is.close();
		    	
			bytes = bytesA;
			wdContext.currentContextElement().setPdfSource(bytes);
    	}
   		catch(Exception e)
   		{
			wdComponentAPI.getMessageManager().reportException("Error Reading File:"+e.getCause(),true);
			wdComponentAPI.getMessageManager().reportException("Error Reading File To String:"+e.toString(),true);
   		}

I've to show this in external window. I created attribute "pdfResource" of type binary

and declared in the source

private ISimpleType myPdfDoc;

After that I added this bit of code in Init Method

myPdfDoc = wdContext.getNodeInfo().getAttribute("pdfResource").getModifiableSimpleType();
((IWDModifiableBinaryType)myPdfDoc).setMimeType(WDWebResourceType.PDF);
((IWDModifiableBinaryType)myPdfDoc).setFileName("PDF");

After this I made an action handler which has following code.

final byte[] documentContent = bytes
final String docUrl = myPdfDoc.format( bytes );
String docUrl = myPdfDoc.format(bytes);

IWDWindow window = wdComponentAPI.getWindowManager().createExternalWindow(docURL,"Resource", true);
window.open();

But it is throwing Null Pointer exception for Init Method and also while displaying.

Where is that I'm faltering. Any Pointers will be help ful

Thanks

Srikant

[Udo_Ahle]

Hello,

is it possible to use the solution from

[Former Member]

Check if the attribute name is "pdfResource"...Your setter (copied from your code & highlighted below) says that it is "pdfSource".

wdContext.currentContextElement().setPdfSource(bytes);

[Former Member]

Hi Bala

I've tried that yet I get null pointer exception

Thanks

Srikant

[Former Member]

First of all why do you need those three lines of code in your wdDoInit() ?

Simply, you may use this:

IWDCachedWebResource cachedResource = null;
 String url = null;
 byte[] pdf = wdContext.currentContextElement().getPdfSource();
 if (pdf != null) {
   cachedResource = WDWebResource.getWebResource(pdf, WDWebResourceType.PDF);
   url = cachedResource.getURL(); 
   }

Refer <a href="http://help.sap.com/saphelp_nw04s/helpdata/en/4a/fb8342a7d30d53e10000000a155106/content.htm">Utilizing the IWDCachedWebResource-API</a> for further assistance.

/* Changed the code */

Message was edited by: Bala Krishnan

[Former Member]

Hi Bala

Sorry for getting back to you after long time. Well your piece of code has helped me finishing my requirement (95%),

Even i have tried getting the url information using InputStream (by passing the FileInputStream info into InputStream)

And in both these cases, a separate window opens but the adobe document doesn't open. do i need to install anything in my machine to view them.

Thanks

Srikant