Re: Problem reading in a file

[Andrew C. Oliver]

This means that for what ever reason the InputStream.read is returning 
-1 (for I can't read anything).  I suspect you either don't have 
permission, are pointing at a 0 length file, or something.  Just open an 
input stream to it and try and read from it.. . Debug from there.

DRINKARD, JAMES E (SBCSI) wrote:

Yes, I used the correct escape characters. I even tried hardcoding the
path/filename string as an argument and it still fails.
-----Original Message-----
From: Read, David [mailto:[EMAIL PROTECTED]
Sent: Tuesday, March 11, 2003 8:35 AM
To: 'POI Users List'
Subject: RE: Problem reading in a file
James,

Did you output the value of fileName to prove it isn't mangled in some way?
Did you escape the backslashes?  i.e.
String fileName = "c:\\temp\\test.xls";

-Dave

-----Original Message-----
From: DRINKARD, JAMES E (SBCSI) [mailto:[EMAIL PROTECTED]
Sent: Tuesday, March 11, 2003 9:23 AM
To: [EMAIL PROTECTED]
Subject: Problem reading in a file
Hello All,
I'm trying to read in an excel file and I keep getting an error due to it
not being able to read the header? I made the file using POI and then
populated it with data. That part works fine. Then I try to read that file
in order to change it using the following code:
try
   {
     POIFSFileSystem fs = new POIFSFileSystem(new
FileInputStream(fileName));  
 	  HSSFWorkbook wrkBk = new HSSFWorkbook(fs);

fileName is a string variable with the filename and path: ie
"c:\temp\test.xls".
The error is:
java.io.IOException: Unable to read entire header; -1 bytes read; expected
512 bytes
java.io.IOException: Unable to read entire header; -1 bytes read; expected
512 bytes
        at
org.apache.poi.poifs.storage.HeaderBlockReader.<init>(HeaderBlockReader.java
:114)
        at
org.apache.poi.poifs.filesystem.POIFSFileSystem.<init>(POIFSFileSystem.java:
120)
        at
com.sbc.ecom.iris.batch.reports.totals.Totals.main(Totals.java:303)
I know from other documentation I read that the header gets read first, so
if it can't find it or interpret it, I assume this is the error one would
get.
Any ideas as to what I'm doing wrong?

Thanks,
James
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