How to download Excel file in JSP Page

Actually I have a page
Where I am uploading the files to server and it is listing the files which are all uploaded to the server.
If I try to click the file which is uploaded it has to download to the local system.
DOC, TXT, PDF, PPT. These file formats are try to download to local. But Excel file, opening the file content only not downloading to local.
Any solution

Hi Bangalore:
As my experience,there may be some symbol such as "\r\n" was added in the content of the Excel file you want to download. this is no porblems to text format file, but to binary format file, such file can not be open. So I suggest you check-up the content of the file befor it was writed to the client, remove unwanted symbol, it should be word!
I'm a newer to the here , and my english is poor. I thirst for intercommunion, I'm sorry for the syntax error in my reply.

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