Hi !
I have the following scenario:
Servet A : performs a synchronous call to another servlet B, located at
some other server.
Servlet B produces binary output, that may be further
processed or directly
routed back to the browser (as shown in the code
example).
URL url = new URL("<url to servlet B with arguments>");
URLConnection connection = url.openConnection();
BufferedReader in = new BufferedReader(new
InputStreamReader(connection.getInputStream()));
OutputStream f = response.getOutputStream();
int a=0;
while ( (a=in.read()) != -1 )
{
f.write(a);
}
in.close();
f.close();
Servlet B: performs some businesslogic, using server B's local
ressources.
In this exaple an MS-Excel Document is generated and returned as
binary data.
response.setContentType("application/x-msexcel");
... some action that produces File excel;
File excel= new File(....)
OutputStream f = response.getOutputStream();
BufferedInputStream bis = new BufferedInputStream (new
FileInputStream(excel));
int a=0;
while ( (a=bis.read()) != -1 )
{
f.write(a);
}
bis.close();
f.close();
problem/question:
If I use the URL of B directly, the generated excel-doc is displayed
correcty
If I modify Servlet B to return standard HTML/Text Output and call Servlet
A, everything works fine all well.
But: if i use the combination as shown in the code, after calling servlet
A, excel pop's up but immediately
crashes. So i suppose there is something going wrong with the binary output
of servlet B ?
Any help appreceated,
Regards,
Dirk
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