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Posted to user@poi.apache.org by Nandan Kidambi <nk...@gmail.com> on 2004/10/15 11:45:27 UTC
Pls HELP!! getting java.io.IOException: Invalid header signature;
Scenario:
Iam trying to read and write an excel sheet from a server to a client. I have
to read the excel from a DBserver & workflow server (which is not the same from
tomcat server and has a firewall between them.) So making a http conn from
servlet engine server.
I know that in the url Iam getting a valid excel file ( coz from the server
where it was written to by another process I can open it).
Reading a stream from Http (via a httpurlconnection.getinputstream()).
This iam writing to the response : like below..
response.setContentType("application/vnd.ms-excel");
InputStream in= httpurlconnection.getInputStream();
POIFSFileSystem fs= new POIFSFileSystem(in);
HSSFWorkbook wb = new HSSFWorkbook();
OutputStream out = response.getOutputStream();
wb.write(out);
out.close();
When I execute, Iam getting the below error.. Could someone please help ?? This
is stopping our dev for the customer. What am I doing wrong or should do
differently?
java.io.IOException: Invalid header signature; read 8387989908914269500,
expected -2226271756974174256
at org.apache.poi.poifs.storage.HeaderBlockReader(HeaderBlockReader.java :124)
at org.apache.poi.poifs.filesystem.POIFSFileSystem(POIFSFileSystem.java:120)
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Re: Pls HELP!! getting java.io.IOException: Invalid header signature;
Posted by Danny Mui <da...@muibros.com>.
what version of hssf are you using?
Nandan Kidambi wrote:
> Scenario:
> Iam trying to read and write an excel sheet from a server to a client. I have
> to read the excel from a DBserver & workflow server (which is not the same from
> tomcat server and has a firewall between them.) So making a http conn from
> servlet engine server.
> I know that in the url Iam getting a valid excel file ( coz from the server
> where it was written to by another process I can open it).
>
> Reading a stream from Http (via a httpurlconnection.getinputstream()).
> This iam writing to the response : like below..
>
> response.setContentType("application/vnd.ms-excel");
> InputStream in= httpurlconnection.getInputStream();
> POIFSFileSystem fs= new POIFSFileSystem(in);
> HSSFWorkbook wb = new HSSFWorkbook();
> OutputStream out = response.getOutputStream();
> wb.write(out);
> out.close();
>
> When I execute, Iam getting the below error.. Could someone please help ?? This
> is stopping our dev for the customer. What am I doing wrong or should do
> differently?
>
> java.io.IOException: Invalid header signature; read 8387989908914269500,
> expected -2226271756974174256
> at org.apache.poi.poifs.storage.HeaderBlockReader(HeaderBlockReader.java :124)
> at org.apache.poi.poifs.filesystem.POIFSFileSystem(POIFSFileSystem.java:120)
>
>
>
>
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