Export unicode data to Excel from Servlet

Question

Hi,
In my application we are export some unicode data to Microsoft Excel 2003 from servlet .
For that i am using the following code.
response.setHeader( "Content-Disposition", "attachment; filename=results.xls" );
response.setContentType( "text/xls" );
theHeader.append("\u30ec\u30dd\u30fc\u30c8 \u30bf\u30a4\u30c8\u30eb");
The above unicode data (japanese character) not displaying properly in Excel (display as "?"). other non unicode things are display properly.
can anyone advise me.

Answer 1

I was having problems writing a unicode (utf-8 or utf-16) csv excel file, found a solution in the end ill post it here in case anyone else is looking.
You need to use the funky encoding x-UTF-16LE-BOM
an example of how to do this is
Writer writer = new BufferedWriter(new OutputStreamWriter(new FileOutputStream(outputFile, true), "x-UTF-16LE-BOM"));
then instead of using commas (,) use tabs (\t)
then in my web.xml i have
<mime-mapping>
<extension>csv</extension>
<mime-type>application/msexcel</mime-type>
</mime-mapping>
this site is a good reference
http://members.chello.at/robert.graf/CSV/
Hope this helps someone ! =]. I am using excel 2007may or may not work with earlier versions.